Consultation ERKAN is pleased to provide this living document for unlocking the
evergrowing vocabulary of Abbreviations and Acronyms of the Telecommunications world,
including those of the early days before the word "Digital" was coined. We strive to include all relevant terms and update the database frequently. Our coverage
of more than 40,000 enteries is not "complete", contributions are gratefully accepted.
0TLP Zero Transmission Level Reference Point 1/e First Edition 10ARSS No. 10A Remote Switching System 10B12B 10-Bits/12-Bits 10B2 10Base2 10BT 10BaseT 10FR Ten Party Flat Rate 10FSL 10.0 File System Layout 10X 10-Speed 12X 12-Speed 16CIF 16 times CIF 1AESS No. 1A Electronic Switching System 1ANCP No. 1A Network Control Point 1ASES No. 1A Service Evaluation System 1AVSS No. 1A Voice Storage System 1BTSPS No. 1B Traffic Service Position System 1EAX No. 1 Electronic Automatic Exchange 1ESS No. 1 Electronic Switching System 1FR One-Party Flat Rate 1MM 1 Meg Modem 1MMS 1 Meg Modem Service 1MR One-Party Message Rate 1NCP No. 1 Network Control Point 1NF First Normal Form 1P 1-Party Line (Individual Line) 1PSS No. 1 Packet Switching System 1STP No. 1 Signal Transfer Point 1TSPS No. 1 Traffic Service Position System 1X Single-Speed 1XB No. 1 Crossbar 2 Dr 2 Draht (2 Wire) 2/e Second Edition 2ASTP No. 2A Signal Transfer Point 2B1Q Two Binary One Quaternary 2BESS No. 2B Electronic Switching System 2D 2-Dimensional 2Dr 2 Draht (2 Wire) 2DT Second Dial Tone 2EAX No. 2 Electronic Automatic Exchange 2ESS No. 2 Electronic Switching System 2FR Two Party Flat Rate 2FRR Two Party Flat Rate Ring 2FRT Two Party Flat Rate Tip 2MI/O 2 Mbit/s Input/Output 2MXC 2 Mbit/s Cross Connect 2NCP No. 2 Network Control Point 2NF Second Normal Form 2P 2-Party Line 2PPAPM Two-Pulse Amplitude and Phase Modulation Modem 2STP No. 2 Signal Transfer Point 2W 2-Wire 2WC Two-Way Call 2WTI 2-Wire Trunk Interface 2WW Two-Way WATS 2X Double Speed (2-Speed) 3-D 3-Dimensional 3/e Third Edition 3AU 3.1 kHz Audio 3B2T Three Binary Two Ternary 3CL Three Current Loop 3D 3-Dimensional 3D-TV Three-Dimensional Television 3DA 3-Dimensional Architecture 3DES Triple DES 3DOF Three Degrees of Freedom 3DR 3DRender 3ESS No. 3 Electronic Switching System 3GL Third Generation Language 3NF Third Normal Form 3P Three Pole 3PC Third Party Connect 3PDT Three Pole, Double Throw 3PST Three Pole, Single Throw 3PTY Three Party 3PTY Three Party Conference 3RD NUM Third Number 3WC Three-Way Calling 3WC Three-Way Call 3WC/CT Three-Way Calling/Call Transfer 3WC/CXR Three-Way Calling/Call-Transfer (Flash) 3WCPUB Three-Way Calling Public 3X Triple Speed (3-Speed) 3XB No. 3 Crossbar 4 Dr 4 Draht (4 Wire) 4/e Fourth Edition 4AETS No. 4A Electronic Translator System 4AXB No. 4A Crossbar Switching System 4B/3T Four Binary/Three Ternary 4B3T Four Binary Three Ternary 4CIF 4 times CIF 4D Four-Dimensional 4Dr 4 Draht (4 Wire) 4ESS No. 4 Electronic Switching System 4FR Four Party Flat Rate 4FRN Four-Fiber-Ring Node 4GL Fourth-Generation Language 4P Four Pole 4P 4-Party Line 4PAM Four-Level Pulse Amplitude Modulation 4PDT Four Pole, Double Throw 4PST Four Pole, Single Throw 4W 4-Wire 4WC Four-Way Call 4WTI 4-Wire Trunk Interface 4WTS Four Wire Terminating Set 4X Quadruple Speed (4-Speed) 4XB No. 4 Crossbar Switching System 5/e Fifth Edition 56C 56 kbps Circuit Mode Data 5B/4B Five Bits/Four Bits 5ESS No. 5 Electronic Switching System 5RSM 5ESS Remote Switching Module 5X Pentuple Speed (5-Speed) 5XB No. 5 Crossbar Switching System 6/e Sixth Edition 64C 64 kbps Circuit Mode Data 68K Motorola 68xxx-Series Microprocessor 6DOF Six Degrees of Freedom 6WC Six Way Calling 6X Sextuple Speed (6-Speed) 7D Seven Digit number 88K Motorola 88xxx-Series Microprocessor 8FR Eight Party Flat Rate 8P 8-Party Line 8X Octuple Speed (8-Speed) 9 Nine
A Accepted A Access (link) A Accumulator Register A Acknowledgement A Activation A Actual A Adaptation A Address A Address field A Address-Recognized A Agent A Aggregate A Amper A Ampere(s) Å Angström A Application Layer A Application Layer Service a Archive Library a Atto... (10-18) A Availability A Hypertext Anchor (HTML tag) A&D Analysis and Design A&E Arts and Entertainment Network A&M Additions and Modifications A/A Analog to Analog A/C Air Conditioner A/D Add/Drop A/D Analog-to-Digital A/D analogue-to-digital A/E Actual to Estimated A/G Air to Ground A/N Aphanumeric A/PC Auto PC A/R Alternate Route A/S Asynchronous/Synchronous A/S/C Alarm, Status, and Control A/SYS Access System A/V Audio/Visual a1 a-wire connection at the terminal equipment input port A1S All Ones a2 a-wire connection at the output port of a series-connected terminal equipment A3 Authentication Algorithm A3 A5/1 Encryption Algorithm A5 A5/2 Encryption Algorithm A5 A8 Algorithm A8 AA Absolute Address AA Access Agent AA Administrative Authority AA Alternate Addressing AA Application Assistant AA Application Association AA ATM Adaptor AA Audit Agent AA Automatic Answer A-A Analog to Analog AA1 ATM Adaptor, Type 1 AAA Authentication, Authorization and Accounting AAA Authentication, Authorization, Administration AAA Automated Acquisition Access AAAS American Association for the Advancement of Science AAB Automatic Alternative Billing AAB Automatic Answerback AABN AMA Alternate Billing Number AABS Automated Alternate Billing Service AABS+ Automated Alternate Billing Service Plus AAC Application Access Conditions AACS Air and Airways Communication System AAD Analog Alignment Disk AAE ATM Adaptation Entity AAE Auxiliary Access Equipment AAF Advanced Authoring Format AAI Alarm/Action Indicator AAK Answer Agent Key AAL ATM Adaptation Layer AAL1 ATM Adaptation Layer 1 AAL-1 ATM Adaptation Layer 1 AAL2 ATM Adaptation Layer 2 AAL-2 ATM Adaptation Layer 2 AAL3 ATM Adaptation Layer 3 AAL-3 ATM Adaptation Layer 3 AAL-3/4 ATM Adaptation Layer 3/4 AAL4 ATM Adaptation Layer 4 AAL-4 ATM Adaptation Layer 4 AAL5 ATM Adaptation Layer 5 AAL-5 ATM Adaptation Layer 5 AAL-CU AAL Composite User AALM AAL Management AALME AAL Management Entity AALP ATM Adaptation Layer Parameters AAN ATM Access Node AANS Auto Answer AAP Alternate Access Provider AAP Atomic Action Protocol AAPI Applet Application Programming Interface AAR Automatic Alternate Routing AAR Automatic Alternative Routing AARE A-Associate REsponse AARE A-ASSOCIATE response/confirm AARQ A-Associate ReQuest AARQ A-ASSOCIATE request/indication AAS Abbreviated Address Signal AAS Advanced Automation System AAS Automatic Announcement Subsystem AAT Agent Architecture Team AAT Automatic Answer Trunk AAT Automation of Analysis Tools AAT Availability Analysis Tool AAT Average Access Time AATP Away Across The Pond AAU Audio Access Unit AAU Automatic Answering Unit AAV Agile Autonomous Vehicle (Four-Legged Robot Vehicle) AAx ATM Adaptor, Type x AB Abbreviated Business Group Extension Number AB Access Burst AB Affected By AB Answer Back AB Automated Bibliography AB Postal code for Alberta ABA Additional Buffer Allocation ABATS Automatic Bit Access Test System ABB Aggregate Building Block ABB Assea Brown Boveri (S-D-CH) ABBH Average Bouncing Busy Hour ABBR Abbreviated ABBR Abbreviation ABBT Automatic Board-to-Board Testing ABC Abstract Base Class ABC Alcatel Business Communication ABC American Broadcasting Company ABC Answer-Back Code ABC ATM Bus Controller ABC Australian Broadcasting Corporation ABC Auto Billing Calling ABC Automatic Background Control (video) ABC Automatic Bass Control ABC Automatic Brightness Control ABC Automatic Business Connections ABCB AB Control Block ABCE ATM Broadband Control Element ABCE Automatic Bridged Call Exclusion ABCEACC Automatic Bridged Call Exclusion Access Codes ABCETACC Automatic Bridged Call Exclusion Toggle Access Code ABCN AMA Business Customer ID ABD Abbreviated Dialing ABD Average Business Day ABDA Automated Bilingual Directory Assistance ABDB A/B Trunk Data Block ABE Audited Build Executor ABEND Abnormal End ABET Accreditation Board for Engineering and Technology ABF Application By Form ABH ABCD Bit Handler ABH Average Busy Hour ABI Application Binary Interface ABIOS Advanced BIOS ABL Area Business Listing ABL Automatic Business Listing ABM Access Bandwidth Manager ABM Asynchronous Balanced Mode ABM ATM Buffer Manager ABNF Augmented BNF ABNN Add Bridged Night Number ABO Automatic Build-Out ABOM A-bis Operations and Maintenance ABR Answer/Bid Ratio ABR Area Border Router ABR Available Bit Rate ABRT A-ABORT request/indication ABS ABSolute abs Absolute Value ABS Acrylonitrile Butadiene Styrene copolymer (plastic) ABS Alarm Battery Supply ABS Alternate Billing Service(s) ABS Alternate Billing System ABS ATM Bearer Service ABS Authorized Bearer Services ABS Automatic Balance Selection ABS Average Busy Season ABSBH Average Busy Season Busy Hour ABSS Automated Broadband Surveillance System ABT Abort ABT ATM Block Transfer ABT/DT ATM Block Transfer with Delayed Transmission ABT/IT ATM Block Transfer with Immediate Transmission ABTT Advisory Board on Technical Trends (ISO-IEC) ABU Asia-Pacific Broadcasting Union AC ACcept AC ACceptor control AC Access Channel AC Access Charge AC Access Class (C0 to C15) AC Access Concentrator AC Access Connection AC Access Control AC Access Customer AC Account Code AC Acknowledged Connectionless AC Action AC Action Coordinator AC Agent Command AC Alerting Channel AC Alignment Check AC Alternating Current AC Announcement Controller AC Answer Complete AC Answered Calls Only AC Application Context AC Area Code AC Assignment Channel AC Attendant Console AC Authentication Center AC Authentication Code AC Authentications Centre AC Authorization Center AC Authorization Code AC Automatic Callback AC Automatic Control AC Awaiting Connection AC/ADC Automatic Callback/Any Designated Call ACA Adaptive Channel Allocation ACA Advanced Computer Application (IIASA' group) ACA Area Coverage Analysis ACA Authorization Code Assurance ACA Automated Cable Analysis ACA Automatic Circuit Assurance ACAP Application Configuration Access Protocol ACARD Advisory Council for Applied Research and Development ACAS Access Charge Analysis System ACAS Application Control Architecture Services ACATS Advisory Committee on Advanced Television Systems ACAU Automatic Calling and Answering Unit ACB Access Barred message ACB Access Barred signal ACB Account Code Billing ACB Address Control Block ACB Automatic Call Back ACB Automatic Callback ACBA Automatic Callback Activate ACBAC Automatic Callback Active/Inactive Status ACBACC Automatic Callback Access Codes ACBAR Automatic Callback/Automatic Recall ACBB Automatic Callback Billing Records ACBD Automated Component Based Development ACBD Automatic Callback Deactivate ACBG Automatic Callback Business Group ACB-I ISDN Automatic Callback ACBISW Automatic Callback Intra-Switch Only ACBMA Automatic Callback Maximum Allowed ACBT Automatic Callback Toggle ACBT1 Automatic Callback Timer 1 ACBT3 Automatic Callback Timer 3 ACBT4 Automatic Callback Timer 4 ACBT5 Automatic Callback Timer 5 ACBTACC Automatic Callback Toggle Access Code ACBTYPE Automatic Callback Type ACC ACCepted ACC Access ACC Access Code(s) ACC Access Control ACC Access Node ACC ACCmulator ACC Account Card Calling ACC Account Code ACC Accumulator ACC Adaptive Channel Control ACC Address Complete Coin ACC Analog Control Channel ACC Anonymous Credit Card aCC ANSI C++ Compiler ACC Area Control Centre ACC Augmented ClearCase ACC Australian CCITT Committee ACC Automated Calling Card ACC Automated Credit Card ACC Automatic Congestion Control ACC Automatic Congestion Control Information message ACCA All-Channel Concentric Allocation ACCAN Alternate Credit Card Account Number ACCB ANI/Coin Control Block ACCD Account Code Digits ACCD Address or Command Collection Dialog AccDi Access Delivery Information ACCFB Attendant-Extended Calls to Call Forwarding Busy ACCFNA Attendant-Extended Calls to Call Forwarding No Answer ACCH Associated Control Channel ACCM Asynchonous Control Character Map ACCMD Access Mode ACCN Alternate Credit Card Number ACCOLC Access Overload Class ACCS Automated Calling Card Service ACCS Automated Calling Card System ACCS Automatic Calling Card Service ACCT ACCes Time ACCT Account Codes ACCY ACCuracY ACD Accumulated Connection Delay ACD Active Call Dialog ACD Adobe Capture Document ACD Agent Command Dictionary ACD Alarm Control and Display ACD Automatic Call Distribution ACD Automatic Call Distributor ACD Automatic Cash Dispenser ACD Average Call Distance ACD/MIS Automatic Call Distribution Management Information System ACDB Agent Command Database ACDB Automatic Call Distribution Base ACDDN Automatic Call Distribution Directory Number ACD-ESS Automatic Call Distributor-Electronic Switching System ACDF Access Control Decision Function ACDMIS Automatic Call Distribution Management Information System ACDMR ACD Management Reports ACDNR Automatic Call Distribution Not-Ready ACDRTD ACD Real Time Display ACE Access Connection Element ACE Access Control Entry ACE Access-Control Entry ACE Adaptive Communication Environment ACE Advanced Computing Environment (Compaq) ACE Adverse Channel Enhancements ACE A-Interface Control Element ACE Application Connection Element ACE Application Creation Environment ACE Assessment and Conversion Environment ACE Asynchronous Communication Element ACE ATM Crossbar Element ACE Audio Compression/Expansion ACE Automated Cable Expertise ACE Automatic Cable Expertise (ATT) ACE Automatic Calling Equipment ACE Automatic Crossconnect Equipment ACE Auxiliary Control Element ACEC Advisory Committee on EMC (IEC) ACEES Attendant Console End-to-End Signaling ACEG Alternating Current Equipment Ground ACELP Algebraic Codebook-Excited Linear Prediction ACET Advisory Committee on Electronics and Telecommunications ACF Access Configuration File ACF Access Control Field ACF Access Control Field (IEEE 802) ACF Access Control Function ACF Admission Confirm ACF Admission Confirmation ACF Advanced Collaborative Filtering ACF Advanced Communication Function (SNA) ACF Advanced Communications Facility ACF Advanced Communications Functions ACF Attribute Configuration File ACF Authentication Control Function ACF Auto-Correlation Function ACF/NCP Advanced Communication Function for the Network Control Program (SNA) ACF/VTAM Advanced Communication Function for the VTAM (SNA) ACFC Address and Control Field Compression ACG Adjacent Charging Group ACG Agent Command Generator ACG Automatic Call Gap ACG Automatic Call Gapping ACG Automatic Code Gap ACG Automatic Code Gapping ACGP Additional Calling Party Number ACH Attempts per Circuit per Hour ACH Automated Clearing House ACHARGE AMA Chargeable End ACHI Application Channel Interface ACI Access Control Information ACI Access-interface Channel Identifier ACI Additional Call Information message ACI Adjacent Channel Interference ACI Ameritech Communications, Inc. ACI Application Context Identifier ACI AT&T Communications Customer Interface ACI AT&T Communications ISDN ACI Automatic Call Identification ACIA Access Control Inner Area ACIA Asynchronous Communication Interface Adapter ACIA Asynchronous Communications Interface Adapter ACID Access Indentifier ACID Application Context ID ACID Atomic, Consistent, Isolated, and Durable ACID Atomicity, Consistency, Isolation, and Durability ACID Atomicity, Consistency, Isolation, and Durability (X.860) ACITS Advisory Committee on Information Technology Standardization (SOG-IT) ACK (affirmative) ACKnowledgement ACK Acknowledge ACK ACKnowledged ACK Acknowledgement ACK/NACK Positive/Negative ACKnowledgement ACL Access Control List ACL Access Control List (X.800) ACL Advanced CMOS Logic ACL Agent Communication Language ACL Application Call Leg ACL Asynchronous Connection Language ACL Automatic Congestion Level ACLU American Civil Liberties Union ACM Access Control Machine ACM Access Control Manager ACM Access Control Mechanism ACM Accumulated Call Meter ACM Active Call Model ACM Address Complete Message ACM Adjunct Call Model ACM Architecture Capture Method ACM Array Class Manager ACM Association for Computing Machinery ACM Audio Compression Manager ACMA Anchored Constant Modulus Algorithm ACMA Atlantic Cable Maintenance Agreement ACMOS Automatic Customer Message Outputting System ACMS Advanced Call Management Services ACMS Application Control and Management System (DEC) ACN ACount Number ACN Actual Carrier Number ACN ATM Carrier Networks ACNA Access Carrier Name Abbreviation ACNA Automatic Customer Name and Address ACNS ATM Carrier Network Services ACNS Attendant Console Night Service ACO Accounting Control Office ACO Additional Call Offering ACO Alarm Cut Off ACO Attendant Console Camp-On ACO Audible Cutoff ACO Augmented Channel Occupancy ACOB Additional Call Offering Billing Records ACOD Access Code Digits ACOLI Advance Circuit Order and Layout Information ACOM Attendant Console Operational Measurements ACOP Additional Connected Party Number ACOR Additional Call Offering- Restricted ACO-R Additional Call Offering- Restricted ACOS Advisory Committee On Safety (IEC) ACOT Analog Central Office Terminal ACOU Additional Call Offering- Unrestricted ACOU Additional Call Offering Unconditional ACO-U Additional Call Offering- Unrestricted ACP Action Control Point ACP Action Point ACP Adjacent Channel Power ACP Adjunct Call Processing ACP Advanced Communications Protocol ACP Alarm Control Process ACP Anywhere Call Pick-Up ACP Application Change Package ACP Application Circuit Pack ACP Architecture Control Process ACP Authorization Code Prefix ACP Automatic Circuit Provisioning ACP Auxiliary Communications Processor ACPA Audio Capture and Playback Adapter ACPE Application Call Processing Engine ACPI Advanced Configuration and Power Interface ACPM Association Control Protocol Machine (ACSE) ACPN Additional Called Party Number ACQS Automated Charge Quotation Service ACR Abandon Call and Retry ACR Absolute Category Rating ACR AC Voltage On Ring ACR Access Charge Recording ACR Account Code Required ACR Adaptive Controlled Routing ACR Aggregate CND Recording ACR Allowed Cell Rate ACR Allowed Current Rate ACR Anonymous Call Rejection ACR Attenuation to Crosstalk Ratio ACR Automatic Call Recording ACR Automatic Character Recognition ACRAC Anonymous Call Rejection Active/Inactive Status ACRB Anonymous Call Rejection Billing Records ACRE Authorization and Call Routing Equipment ACRJ Anonymous Call Rejection ACRONYM Any Concise Rendering of Obfuscatory Nomenclature Yielding Mnemonics (from: Dan Caugherty) ACRRC Anonymous Call Rejection Restricted Control ACRT Administrative CRT ACRTC Advanced Cathode Ray Tube Controller ACS Access Control Store (CCA/VTS) ACS Access Control System (DAB) ACS Advanced Cellular System ACS Advanced Communication Service (Bell) ACS Advanced Communication Services ACS Assembly Control System ACS Association Connection Segment ACS Asynchronous Communications Server ACS ATM Circuit Steering ACS ATM Core Switch ACS Automatic Call Back/Recall ACS Automatic Call Setup ACSA Access Control Specific Area ACSE Association Control Service Element ACSI Automatic Calling Station Identification ACSSB Amplitude-Compounded Single-SideBand modulation ACT Abstract Conformance Test ACT AC Voltage On Tip ACT Access Code Translations ACT Activate ACT Activatible act Activation ACT Active ACT Activity ACT Applied Computerized Telephony ACT Architecture Capture Team ACT Asynchronous Communication Tree ACT Audiographic Teleconference Terminal ACTA Adaptive-Cycle Tunable-Access ACTA America's Carriers Telecommunication Association ACTAS Alliance of Computer-Based Telephony Applications Suppliers ACTE Advisory Committee for Terminal Equipment ACTE Approval Committee for Terminal Equipment ACTE Approvals Committee for Telecommunications Equipment ACTE Approvals Committee for Terminal Equipment ActID Action Identifier ActID Activity Identifier ACTLU Active Logical Unit ACTOM Advisory Committee on Technical and Operational Matters (of Inmarsat) ACTPU Active Physical Unit ACTR Automatic Call Type Recognition ACTS Advanced Communication Technology Satellite ACTS Advanced Communications Technologies and Services ACTS Automated Coin Telephone Service ACTS Automated Coin Toll Service ACTS Automated Computer Time Service ACTS Automatic Circuit Test System ACTT Advanced Communication and Timekeeping Technology Actv Active ACTV Advanced Compatible TeleVision ACU Access Control Unit ACU Acknowledgement signal unit ACU Alarm Control Unit ACU Antenna Combining Unit ACU Antenna Coupling Unit ACU Automatic Calling Unit ACUTA Association of College and University Telecommunications Administrators ACW Address Code Word AD Abbreviated Dialing AD Active Directory AD Addendum Document to an OSI standard (ISO) AD ADdress AD Adjunct AD Application Directory AD Application Dispatch AD Architecture Defined AD Architecture Design AD Architecture Designed AD Area Director AD Assembly Drawing AD Autonomous Circuit-Mode Data AD Awaiting Disconnect AD ISO country code for Principality of Andorra A-D Analog to Digital ADA Add Authcode ADA Administration Agent ADA Advanced Directory Assistance ADA Aldus Developer's Association ADA AutoDirectional Antenna (Blaupunkt) ADACC Automatic Directory Assistance Call Completion ADACC-AB Automatic Directory Assistance Call Completion with Alternate Billing ADAD Automatic Dialing-Announcing Device ADAI Advanced Digital Audio Interface ADAP Adaptive Profile ADAPt Adaptive Digital Access Protocol ADARTS Ada-Based DARTS ADAS Automated Directory Assistance Service ADAS+ Automated Directory Assistance Service Plus ADAS+ Automated Directory Assistance System Plus ADB Alarm Detector Base ADB Apple (Inc.) Desktop Bus ADB Apple Desktop Bus ADBS Access Data Base System ADC Adaptive Data Compression ADC Add with Carry (80x86 inst) AdC Address Code ADC Address Complete ADC ADdress complete, Charge ADC Address Complete, Charge signal ADC Administration Center ADC Advanced Data Connector ADC Advanced Data Controller ADC American Digital Cellular ADC Analog/Digital Converter ADC Analogue to Digital Converter ADC Applied Data Communications ADCCP Advanced Data Communication Control Procedures ADCCP Advanced Data Communications Control Protocol ADCI Automatic Display Call Indicator ADCP Automated Data Changes Process ADCU Association of Data Communications Users ADD Adapter Device Driver ADD Add line to existing hunt group Add Addendum ADD Agent Data Decoupling ADDMD ADministrative Directory Management Domain ADDPH Add/Change Packet Handler Options ADDR Address ADDS Attribute Design Database System ADDS Automatic Direct Dialing System ADE Advanced Development Environment ADE Application Development Environment ADE Automatic Design Engineering ADEPT Analysis Data Extraction and Performance Tool ADF Access Control Decision Function ADF Access Data Function ADF Adapter Description File ADF Adaptive Digital Filter ADF ADdress Field ADF Affected Destination Field ADF Agent Data Framework ADF AMA Data File ADF Application Data File ADF Authentication Data Function ADF Automatic Direction Finder ADF Automatic Document Feeder ADF Auxiliary Distribution Frame ADFD Action Data Flow Diagram ADGT Advisory Group on Data Transmissions ADH Automatic Data Handling ADI Address Incomplete message ADI Address Incomplete signal ADI Alternate Digit Inversion ADI Area of Dominant Influence ADI Automatic Deactivation Indication ADI Automatic Deactivation Indicator ADK Applications Development Kit ADL Abbreviated Dialing ADL Abbreviated Dialing List ADL Address Data Latch ADL Animation Description Language ADLC Advanced Data Link Control ADLC Advanced Data Link Controller ADM Adaptive Data Multiplexing ADM Adaptive Delta Modulation ADM Add/Drop Multiplex ADM Add/Drop Multiplexer ADM Add/Drop Multiplexing ADM Add-on Data Module ADM Administration ADM ADMinistrative department (ETSI) ADM Administrative Management Domain ADM Agent Data Model ADM Asynchronous Disconnect Mode ADM Asynchronous Disconnected Mode ADMA Amplitude Division Multiple Access ADMD Administration Management Domain ADMD ADministration Management Domain (MHS) ADMF ADSI Data Message Format ADN Abbreviated Dialling Number ADN ADdress complete, No charge ADN Address Complete, No-charge signal ADN Administration ADN Advanced Digital Network ADNIC AMA DNIC ADO ActiveX Data Object ADO Add Option(s) ADO Add Order ADO Asynchronous Data Option ADP Adaptation Sublayer ADP Additional (Overtime) Period ADP Automatic Data Processing ADPACS Automated Data Processing And Communication Service ADPC Automatic Data Processing Center ADPCM Adaptive Delta-PCM ADPCM Adaptive Differential PCM ADPCM Adaptive Differential Pulse Code Modulation ADPE Automatic Data Processing Equipment ADPS Automatic Data Processing System ADPS Automatic Data Processing System ADPT ADaPTor, ADaPTer ADQ Almost Differential Quasi-ternary ADR Abbreviated and Delayed Ringing ADR Adaptive Routing ADR Address ADR Advanced Design Research ADR Application-Dependent Route ADR Availability Data Report ADS Active Double Star ADS Address Screening ADS Administration and Data Server (HICOM) ADS Advanced Digital System ADS Announcement/Detection Subsystem ADS Any Digital Switch ADS Application Developer's Seat ADS Application Development System ADS ASIC Design System ADS ATM Distributed Switch ADS Audiogram Delivery Service ADS Austrian Digital Switch ADS Austrian DMS System ADS Automatic Data Set ADSH Audio Stream Handler ADSI Active Directory Service Interface ADSI Advanced Display Services Interface ADSI Analog Display Services Interface ADSL Asymmetric Digital Subscriber Line ADSL Asymmetrical Digital Subscriber Line ADSL Asymmetrical Digital Subscriber Loop ADSM ADSTAR Distributed Storage Manager ADSP Advanced Digital Signal Processor ADSP Apple Datastream Protocol ADSP AppleTalk Data Stream Protocol ADSR Automatic Dead System Recovery ADT Abstract Data Type ADT Access for Windows Developer's Toolkit ADT Advanced Display Technology ADT Alaska Daylight Time ADT American District Telegraph ADT Atlantic Daylight Time ADT Audit Driver Task ADT Automatic Data Transmission ADT Automatic Deactivation Threshold ADTC Austrian Digital Trunk Controller ADTE Asynchronous Data Terminal Equipment ADTE Automatic Deactivation Threshold Exceeded ADTF ACR Decrease Time Factor ADTS Automated Data and Telecommunication Service ADTS Automated Digital Terminal System ADTS Automatic Data Test System ADTS Automatic Digital Transmission System ADTV Advanced Digital Television ADU Accumulation and Distribution Unit ADU Application Data Unit ADU Automatic Dialing Unit ADU Automatic Dialling Unit ADVICE Aid in Design Verification for IC Engineering ADVM Adaptive Delta Modulation Voice Modem ADW Aerial Distribution Wire ADW Analysis and Design Workstations ADX Address Complete, Coin-Box signal ADX Automatic Exchange AE Acceptor Error AE Address Extension AE Application Entity AE Application Entity (OSI-AL) AE Applications Environment AE Automatic Electric Co. AE Automation Environment AE ISO country code for United Arab Emirates AEA American Electronics Association AEC Acoustic Echo Canceller AEC Acoustic Echo Control AEC Alternate Exchange Carrier AEC Architecture, Engineering, and Construction AECMA Association Européenne des Constructeurs de Matériel Aérospatial AECo Automatic Electric Company AEE Asociacion ElEctrotécnica AEF Access Control Enforcement Function AEF Additional Elementary Functions AEF Address Extension Field AEI Additional Equipment Interface AEI Application-Entity Invocation AEIMP Apple Event Interprocess Messaging Protocol AELE Association Européenne de Libre Echange (EFTA) AEM Analogue Extension Module AEMK Answer Emergency Key AEN Asynchronous Event Notification AENOR Asociacion Espanola de NORmalizacion (E) AENOR Asociacion Espanola de Normalizacion y Certificacion AEP Acoustic Echo Path AER Application Event Record AER Application Event Recorder AER Application Event Recording AERM Alignment Error Rate Monitor AES Aircraft Earth Station AES Application Environment Specific AES Application Environment Specification AES Asynchronous Event Scheduler AES ATM End System AES Audio Engineering Society AES Auger Electron Spectroscopy AES/EBU Audio Engineering Society/European Broadcast Union AESA ATM End Station Address AESA ATM End System Address AESC Automatic Electronic Switching Center AET Application Entity Title AET Architecture Evolution Team AETJ GTE Automatic Electric Technical Journal (periodical) AF Access Facility AF Access Fault AF Access Function AF Address Family AF Adjust Flag AF Alternative Frequencies (RDS) AF Applications Framework AF Audio Frequency AF AudioFile AF Auxiliary Carry Flag AF ISO country code for Islamic State of Afghanistan A-F Actual Operators to Final Operators AFADS Automatic Force Administration Data System AFAIK As far as I know AFC Additional Functional Call AFC Address Complete, Subscriber Free, Charge signal AFC Alternate Function Code AFC Application Foundation Classes AFC Automatic Fee Collection AFC Automatic Frequency Control AFDP Adaptive File Distribution Protocol AFE Active Feature Element AFE Analog Front End AFF Advanced Filtering Facility AFFUT Association Française des Utilisateurs du Téléphone et des Télécomunications AFG Access Feature Grouping AFI Authority and Format Identifier AFI Authority and Format Identifier (NSAP) AFIPS American Federation of Information Processing Societies AFIS Aerodrome Flight Information Service AFIT Automated Fault Insertion Testing AFL Application Framework Library AFM Adobe Font Metric AFM Atomic Force Microscope AFM Atomic Force Microscopy AFM Audio Frequency Modulation (8mm VTR Sony Inc.) AFN Access Feeder Node AFN Address Complete, Subscriber Free, No-Charge signal AFN All Figure Number AFNOR Association Francaise de Normalisation AFP Advanced Freephone AFP AppleTalk Filing Protocol AFP Automatic Floating Point AFP Automatic Frequency Planning AFPS Advanced File and Print Services AFPS Automatic Facility Protection Switching AFR AFR Trigger AFR Annualised Failure Rate AFR Automatic Field Recognition AFR Automatic Flexible Routing AFR Automatic Format Recognition AFR Awaiting Forward Release AFRDP Automatic Flexible Routing Dialing Plan AFS Advanced Freephone Service AFS Andrew File System AFS Andrew File System (TCP/IP) AFS Audit File Switch AFSK Audio Frequency Shift Keying AFT Adapter Fault Tolerance AFT Analog Facility Terminal AFT Authentication Firewall Traversal AFT Automatic File Transfer AFT Automatic Frequency Tuning AFTN Aeronautical Fixed Telecommunication Network AFUTT Association Francaise de Telephone et des Telecommunications (F) AFX Address complete, subscriber Free, coin boX AFX Address Complete, Subscriber Free, Coin-Box signal AG Address Generation AG Advisory Group (ETSI) AG Aktien Gesellschaft AG Associated Group AG ISO country code for Antigua and Barbuda AG Try Again AG/EEE Above Ground Electronic Equipment Enclosure AGA Associated Group Assignment AGA Associated Group Assignments AGC Access Group Controller AGC Advanced Graphic Controller AGC Automatic Gain Control AGC Automatic Gapping Controls AGCH Access Grant Channel AGCS AG (AT&T/GTE) Communication Systems AGDS Absolute Global Data Segment AGE Automation Generic Environment AgentX Agent Extensibility AGEX Address Generation/Execute Cycle AGGR Aggregate AGI Address Generation Interlock AGI Associated Group Indicators AGIS Apex Global Information Services AGND Analogue GrouND AGNES Aggregate Network Evolution Simulator AGP Accelerated Graphics Port AGP Advanced Graphics Port AGR Adaptive Grooming Router AGRP Associated Group AGRU Automatische Ansage gaenderter Rufnummern (Call forward to automatic announcement of changed directory numbers) AGS Assignable Grade of Service AGSR Authorized GSA Scheduler Representative AGT Active Generations Table AGT Alberta Government Telephone AGTK Application Generator Tool Kit AGV Automatic Guided Vehicle AH Acceptance Handshake AH Accumulator Register High Half AH Ad Hoc AH Application Header AH Artech House AH Authentication Header AH Average Hour AHAB Automated Headset Adapter Box AHAB Automatic Headset Adapter Box AHCA Average Hour Call Attempt AHCM Absolute Humidity Control Module AHFG ATM-attached Host Functional Group AHG Ad Hoc Group AHJ Authority Having Jurisdiction AHLF Additional High Layer Function(s) AHPL A Hardware Programming Language AHR Address Hold Register AHT Average Holding Time Ai Action indicator AI Activation Indication AI Active Indication AI Activity Interrupt AI Adapter Interface AI Address Incomplete AI Agent Information AI Air Interface Ai A-law Inverted AI Alerting Indication AI Antenna Interface AI Artificial Intelligence AI Aspect Interface AI Auto Inserted AI Automatic Identification AI Automatic Intercept AI ISO country code for Anguilla AIA Action Item Assignment AIA Application Integration Architecture (DEC) AIA Automatic Internal Administration AIAG Automative Industry Action Group aib Alarm Indication Bit AIB Automatic Intercept Bureau AIC Access Interface Card AIC Analog Interface Circuit AIC Asian ISDN Council AIC Automatic Intercept Center AIC Awaiting Incoming Continuity AID Access Identifier AID Access Point Identifier AID Agent ID AID Application Identifier AIDAF Agent Interworking Data Access Framework AIDS Automatic Inventory Directory System AIEA Agence International de l'Energie Atomique AIEE American Institute of Electrical Engineers AIF Additional Information Field AIF Application Interface AIF Audio Interchange Format AIFC AIFF With Built-In Compression AIFF Audio Interchange File Format AIFL Automatic Identification of Outward Dialing Failure AII Active Input Interface AII Additional Information Indicator AILC Asynchronous Interface Line Card AILU Asynchronous Interface Line Unit AIM Advanced Informatics in Medicine AIM Agent Interworking Mechanism AIM Apple, IBM, Motorola AIM Application Integration Module AIM Architectural Improvement of the Month AIM Asynchronous Interface Module AIM ATM Inverse Multiplexer AIM Automatic Inspect Mode AIM Awaiting Incoming Message AIMS Advanced Image Management System AIMS Auto-Indexing Mass Storage AIMUX ATM Inverse Multiplexing AIN Additional Information Number AIN Advanced Intelligent Network AIN Attribute Identification Number AINAP AIN Application Protocol AINDN Advanced Intelligent Network DN AINGR Advanced Intelligent Network Generic Requirements AINI ATM Internetwork Interface AINREL AIN Release AINS Automatic In-Service AINT Adjacent Intermediate Node Translator AINTC Automatic Intercept Service Call Completion AINTCC Automatic Intercept Call Completion AIO Additional Information Octet AIOD Automatic Identification Outward Dialing AIOD Automatic Identified Outward Dialing AIODLK Automatic Identified Outward Dialing Link AIP Additional Information Presentation (supplementary service) AIP Aditional Presentation Information AIP Agent Interworking Protocol AIP Air Interface Protocol AIR Action Item Resolution AIR Additive Increase Rate AIR Additive Increase to Rate AIR Ad-hoc Information Request AIR Allowed Information Rate AIR Attendant Console Intermediate Release AIRF Additive Increase Rate Factor AIRS Automatic Image Retrieval System AIRS Automatic Intercept Retrieval System AIS Alarm Indication Signal AIS Alarm Indication Signalling AIS Alarm Inhibit Signal AIS Atria Information Switchboard AIS Automatic Intercept Service AIS Automatic Intercept Signaling AIS Automatic Intercept System AISP Advanced ISP AISUP Australian ISUP AIT Additional Information Type AIT Advanced Intelligent Tape AIT Architecture Integration Team AIT Average Instruction Time AIU Access Interface Unit AIU Alarm Interface Unit AIU Analog Interface Unit AIV Architecture Integration and Verification AIW APPN Implementors' Workgroup AIX Advanced Interactive Executive AIX Advanced Interactive eXecutive (IBM/UNIX) AK Acknowledgement AK Attendant Key AK Data Acknowledgment AK U.S. postal code for Alaska aka Also Known As AKA Authentication and Key Agreement AKM Apogee Kick Motor AKO Add Key Option AL Access Line AL Access Link AL Accumulator Register Low Half AL Alignment AL ALphabetic AL Ambience Listening AL Analog Link AL Analog Loopback AL Application Layer (OSI) AL Application Layer-Call Control Interface AL ISO country code for People's Socialist Republic of Albania AL U.S. postal code for Alabama AL1 Adaptation Layer 1 AL2 Adaptation Layer 2 AL3 Adaptation Layer 3 ALB Association Link Block ALBO Automatic Line Build-Out ALC Airline Link Control ALC Airlines Line Control (IBM) ALC Application Life Cycle ALC Automatic Level Control ALC Automatic Load Control ALCIN Alcatel Intelligent Network ALCM Austrian Line Concentrating Module ALD Architecture Level Design ALD Asymmetric Life Dependency ALD Attribute List Display ALD Automated Logic Diagram ALDOS ACI Long Distance Operations System ALE Address Latch Enable ALE Address Lifetime Expectancy ALE Address Lifetime Expectations ALE Approval Liaison Engineer (UK) ALERT ALERT function for different types of alert ALERT Alerting message ALF Application Layer Framing ALFA Automatic Laser-Fiber Assembly ALFE Alert Logic Filter Editor (Bool and Babbage) ALGC Austrian Line Group Controller ALGM ALGorithM ALGOL Algorithmic Oriented Language ALI Application Level Interface ALI ATM Link Interconnect ALI Automatic Line Identification ALI Automatic Location Identification ALIT Automatic Line Insulation Test ALIT Automatic Line Insulation Testing ALITS Automatic Line Insulation Testing System ALIU Alarm Line Interface Unit ALLC Automatic Logical Link Connection ALLF Additional Low Layer Function(s) ALM Alarm ALM AppWare Loadable Module ALM Association Link Manager ALM ATM Layer Manager ALMSTAT Alarm Status ALMSTATGRP Alarm/Status Settings Group Identifier ALN AMA Line Number ALO Association Link Object ALP Abstract Local Primitive ALP Application Layer Program ALP Automated Language Processing ALP Automated Learning Process ALPC Adaptive Linear Predictive Coding ALR Active Line Rotation ALR Advanced Logic Research ALRM Alarm ALRS Admiralty List of Radio Signals ALS Alerting Signal ALS Application Layer Service ALS Application Layer Structure (OSI) ALS Automatic Laser Shutdown ALSC Alternate Line Screening Code ALSTTL Advanced Low-power Schottky Transistor-Transistor Logic ALT Accelerated Life Test ALT Alerting message ALT Alternate ALT Alternate Local Transport Company alt Alternative ALT ALTitude ALT Automatic Line Test ALT Automatic Line Testing ALT Automatic Link Transfer ALTANN Alternate Announcements ALTP Accelerated Life-Cycle Test Program ALTS Alternative Local Transport Supplier ALTS Association for Local Telecommunications Services ALTS Automatic Line Test Set ALU Abbreviated Line-Up ALU Arithmetic and Logic Unit ALU Arithmetic Logic Unit ALU Arithmetic/Logic Unit ALU Average Line Usage ALU Average Line Utilization AM Access Management AM Access Manager AM Access Method AM Access Module AM Accounting Management AM Activity Manager AM Address Marker AM Address Modifier AM Administrative Module AM Agency Model AM Agent Manager AM Airline Mileage AM Alignment Mask AM AlphaMosaic AM Amplitude Modulation AM Ante Meridian AM Application Model AM ASCII Mediation AM Association Manager AM Audio Monitor AM DDOC Section: AMA/Billing Changes AM ISO country code for Armenia AM/PSK Amplitude Modulation/Phase Shift Keying AMA Automatic Message Accounting AMA TSG Automatic Message Accounting Technical Support Group AMAB Automatic Message Accounting Billing AMAB Automatic Message Accounting Buffer AMACC AMA Collection Center AMACS Automatic Message Accounting Collecting System AMACS Automatic Message Accounting Collection System AMAD AMA Digits Dialed Wild Card AMADNS Automatic Message Accounting Data Networking System AMAF Atlantech Management Application Framework AMAI AMA International AMAP Adaptive Mobile Access Protocol A-MAP A-field MAP AMARC Automatic Message Accounting Recording Center AMARCS Automatic Message Accounting Recording System AMARS Automatic Message Accounting Recording System AMASE AMA Standard Entry AMASTR AMA Structure Code AMAT Automatic Message Accounting Transmitter AMATP Automatic Message Accounting Transaction Processor AMATPS Automatic Message Accounting Teleprocessing System AMBCE Activation of Manual Bridging Call Exclusion AMC Access Multiplexer for CaTV AMC American Movie Classics AMCP Adjunct Mobility Control Point AMD Advanced Micro Devices AMD Ammendment AMDS Amplitude Modulation Data System AME Access Mechanism AMEL Active-Matrix Electroluminescent AMES ATM Mobility Extension Service AMF Access Management Function AMF Alternate Master Format AMF Application Messaging Framework AMF Association Manager Framework AM-FDM Amplitude Modulated-Frequency Division Multiplexed AMH Advanced Measurement Head AMI Alternate Mark Inversion AMI Alternate Mark Inversion (digital data transmission format) AMI American Megatrends, Inc. AMI American Microsystems International AMI Application Messaging Interface AMI Automatic Modem Insertion AMI Autonomous Message Interface AMIEE Associate Member of the Institution of Electrical Engineers (GB) AMIP Access Module Interconnect Paddle card AMIPC AM Interconnect Paddle Card AMIS Agricultural Market Intelligence System AMIS Audio Messaging Interchange Specification AML Actual Measured Loss AML Applications Module Link AMLCD Active Matrix Liquid-Crystal Displays AMLCD Active-Matrix LCD AMM Advanced Memory Management Amm Ammendment AMM Answer Mode Modem AMN Acknowledgement of Mcu Number AMON ATM Monitoring AMP Acknowledge Mode Protocol AMP Active Monitor Present AMP Agent Meeting Point AMP AIN Maintenance Parameter amp Ampere AMP Amplifier AMP Auxiliary Channel Multiplexing Pattern AMPS Advanced Mobile Phone Service AMPS Advanced Mobile Phone System AMPSK Amplitude Modulation Phase Shift Keying AMR Automatic Message Recording AMR Automatic Message Routing AMR5 Automatic Message Recording 5 AMRF Automated Manufacturing Research Facility AMS Amplitude Modulation Suppression AMS AT&T Message Service AMS ATM Main Switch AMS Audiovisual and Multimedia Service AMS AudioVisual Multimedia Service AMSAT Radio AMateur SATellite corporation AMSC American Mobile Satellite Corporation AMSRID Authorized Message Service Identification AMSS Aeronautical Mobile Satellite Service AMT Address Mapping Table AMT Advanced Manufacturing Technique AMT Ameritech Amt Amount AMTA American Mobile Telecommunications Association AMTICS Advanced Mobile Traffic-Information Communications System AMTOR AMateur Telex Over Radio AMTS Automatic Mobile Telephone System AMU Antenna Matching Unit AMVFT Amplitude Modulation Voice Frequency Telegraphy AMVSB Amplitude Modulation with Vestigial SideBands AM-VSB Amplitude Modulation-Vestigial Sideband AMW Automatic Message Waiting AMWN Audible Message Waiting Notification AMX ATM Multiplexer AN Access Network AN Access Node AN America's Network (periodical) AN Announcement Machine AN Annunciator AN Application Note AN ISO country code for Netherlands Antilles an power level ANA Article Numbering Association ANA Assigned Night Answer ANA Automatic Number Announcer ANAL ANALogue ANALIT Analysis of Automatic Line Insulation Tests ANBFM Adaptive Narrow-Band FM Modem ANC Active Noise Cancelation ANC All Number Calling ANC Answer Charge message ANC Answer Complete ANC ANswer signal, Charge ANC Answer, Charge signal ANC Area Number Calling ANCM Access Node Configuration Manager AND Abbreviated Number Delivery AND Automatic Network Dialing AND Logical AND ANDF Architecture Neutral Distribution Format ANDI Anmeldedienst (Enrollment Service) ANDI Logical AND Immediate ANET Asynchronous Network ANF Access Network Function ANF Additional Network Feature ANF Additional Network Features ANF Automatic Number Identification Failure AN-FR AN Frame Relay Function ANG Advanced Networking Group ANI Animated Cursor file ANI Automatic Number Identification ANI7 Automatic Number Identification 7 ANID Active Network Interface Device ANID Adjacent Network Identifier ANIE Associazione nazionale industrie elettrotecniche ed ellettroniche (Italy) ANIEL Associación Nacional de Industria Electronica (Spain) ANIF Automatic Number Identification Fail ANIF Automatic Number Identification Failed ANIF Automatic Number Identification Failure ANIS Analoger Teilnehmeranschluss an ISDN (analog subscriber served by digital local exchange) ANIS Analog-Teilnehmer an DIVO-VSt (analogue subscriber connected to digital exchange) ANL Automatic Noise Limiter ANLG Analog ANM Advanced NM (Net/Master, IBM) ANM Answer Message ANMS ATM Network Management System ANN Announcement ANN Answer No-Charge message ANN ANswer signal, No charge ANN Answer, No-Charge signal ANNC Announcement ANNS Announcements anot Automatic Notification ANP AAL Type 2 Negotiation Procedure ANP AAL2 Negotiation Protocol ANR Abnormal ANR Automatic Network Routing ANR Awaiting Number Received ANRST Abnormal-and-Restricted ANS Advanced Network & Services, Inc. ANS Advanced Network Systems ANS Advanced Networking Services ANS Alcatel Network Systems ANS American National Standard ANS Answer ANS Answer message ANS Answer signal ANS ATM Name Server ANS Automated Notification System ANSA Advanced Network System Architecture ANSA Advanced Networked Systems Architecture ANSC American National Standards Committee ANSI American National Standards Institute (US) ANSTIM Answer Timing ANT Antenna ANT Application of New Technologies ANTU Analogue Network Termination Unit ANU Answer Unqualified message ANUI AMA Network User Identification ANX Access Node Express ANZCAN Australia-New Zealand-Canada submarine cable AO Abort Output AO Acceptor Operable AO Account Owner AO Alternate Operator AO Answer Only AO Application Object AO Authorizing Origination point in call AO Automated Office AO ISO country code for Republic of Angola AO/DI Always On/Dynamic ISDN AO/S Agents Object System AO3 Add-On Conference- 3-Party AO6 Add-On Conference- 6-Party AOA Angle of Arrival AoC Advice of Charge AOC Advice Of Charge (supplementary service) AOC Aeronautical Operational Control AOC Automatic Overload Control AOC Awaiting Outgoing Continuity AoCC Advice of Charge (Charging) (supplementary service) AoCC Advice of Charge Charging AOC-D Advice of Charge (Service)- During call AOC-D Advice of Charge During the Call AOCE Apple Open Collaboration Environment AOC-E Advice of Charge (Service)- at End of call AOC-E Advice of Charge at the End of the Call AoCI Advice of Charge (Information) (supplementary service) AoCI Advice of Charge Information AOCP Additional Original Called Party Number AOCR Automatic Out-of-Chain Routing AOCS Attitude and Orbit Control System AOC-S Advice of Charge (Service)- at call Set-up time AOC-S Advice of Charge at Call Setup Time AODI Always On Dynamic ISDN AOG Alternative Operators Group AOI Active Output Interface AOI Area Of Interest AOL America Online AOL Application Oriented Language AON Active Optical Network AON All-Optical Network AON All-Optical Networking AONALS Type "A" Off-Network Access Lines AOP Annual Operating Plan AOP Attendant Overflow Position AOP Average Occupied Positions AOPL Application-Oriented Parsing Language AOPS Automated Office Protocol Standard AOQ Average Outgoing Quality AOQL Average Outgoing Quality Level AOR Application-Owning Region AOR Atlantic Ocean Region AOR Atlantic Ocean Region (INTELSAT) AORG Auto Originate AOS Acquisition Of Signal AOS Advanced Operating System AOS Agents Object System AOS Alternative Operator Services AOS Area of Service AOS Attitude and Orbit control Subsystem AOSS Auxiliary Operator Services System AOSSVR Auxiliary Operator Services System with Voice Response AOTC Australian and Overseas Telecommunication Corporation AOTF Acoustooptic Tunable Filter AOTF Acousto-Optical Tunable Fiber AOTS Advanced Orbital Test Satellite AOTT Automatic Outgoing Trunk Test AOW Asia-Oceania OSI Workshop AOW Asia-Oceania Workshop AOZ Address Complete, Without Additional Information AP Abstract Protocol AP Access Point AP Access Priority (TETRA) AP Access Privilege AP Access Protocol AP Access Provider AP Action Point AP Actionpoint AP Active Approval AP Adjunct Processor AP Administration Processor AP Administrative Point AP Administrative Processor AP Agency Protocol AP Agent Process AP Agent Profile AP Alerting Pattern AP Alternating Projection AP Application Part AP Application Process AP Application Profile (OSI-AL) AP Application Protocol AP Application(s) Processor AP Argument Pointer AP Assemblée Plénière (CEPT, CCIR, CCITT) AP Attendant Position AP&R Automated Prompt and Response APA Active Position Addressing APA All Points Adressable APA All-point Addressable (IBM WS capability for vector graphics) APAB All-Primary/All-Backup APAS Advanced Public Access Solutions APB Adaptive Prediction Backwards APB All Paths Busy APB All Positions Busy APC Access Processor Card APC Adaptive Power Control APC Adaptive Predictive Coding APC Adaptive-Predictive Coder APC Aeronautical Public Correspondence APC Alarm and Power Control APC AMARC Protocol Converter APC American Personal Communications APC American Power Conversion APC Analog Private Circuits APC Application Processor Cabinet APC Application Program Command APC Asia Pacific & CALA DMS-100 APC Asia Pacific Committee APC Asynchronous Procedure Call APC Automated Process Control APC Automatic Phase Control (PLL) APC Automatic Power Control APC Average Power Control APC-AB Adaptive Predictive Coding with Adaptive Bit allocation APCC Asia Pacific Conference on Communications APCI Association Potocol Control Information APCM Adaptive Pulse Code Modulation APCN Asia Pacific Cable Network APCO Association of Public Safety Communications Officials International APD Automatic Phase Detector APD Automatic Power-Down (IC) APD Avalanche Photo Detector APD Avalanche Photo Diode APD Avalanche Photodiode APDA Apple Programmers' and Developers' Association APDL Algorithmic Processor Description Language APDU Application Protocol Data Unit APDU Application Protocol Data Unit (OSI-AL) APE Abgesetzte Pheriphaere Einheit (Remote Peripheral Unit) APEC Asia Pacific Economic Cooperation APF Adaptive Prediction Forward APG Application Programming Guide APH Actionpoint Handler API Abbreviated Page Index API Advanced Product Information API Application Program Interface API Application Programmer Interface API Application Programming Interface API Application Protocol Interface API Application-Process Invocation API Applications Programming Interface API Asynchronous Pollable Interface API Asynchronous Polling Interface API Attached Processor Interface API/CS API/Communication Services APIA Application Programming Interface Association APIA X.400 API Association for X.400 APIC Advanced Programmable Interrupt Controller APIC Alternate Preferred IC Indicator APIC Alternate Preferred InterLATA Carrier APICI Alternate Preferred InterLATA Carrier Indicator APII Asia/Pacific Information Exchange APK Amplitude Phase Keying APK Amplitude-Phase-Keyed APL A Programming Language APL Advanced Parts List APL Advanced Programming Language APL Advisory Processor Lock APL Analog Private Line APL APpLication APL Average Picture Level (Video) APM Additional Packet Mode bearer service (CCITT I.122) APM Advanced Power Management APM Amplitude Phase Modulation APM Antenna to Partition Mapping APM Application Processor Module APM Application Transport Mechanism APM Application Transport Message APM Audio Processing Module APM Auxiliary Processing Machine APMS Application Penetration Monitoring System APMT Alcatel PMT APN Audio Processing Node APNB All-Primary/No Backup APNG Australia-Papua New Guinea submarine cable APNSS Analogue Private Network Signalling System APOC Advanced Paging Operations Code APOC Advanced POCSAG APOCS Atlantic Provinces Optical Cable System APOK Advanced Programming Object Kit APOLT APON Line Termination APON Asynchronous Passive Optical Network APON ATM over Passive Optical Network APONT APON Network Termination APP Additional PleniPotentionary conference (ITU) APP Application APP APplication Program APP Application Transport Parameter APP Approved APP Ascend Password Protocol APP Auxiliary Power Plant APPC Advanced Program-to-Program Communications (SNA-LU 6.2) APPL Application APPL Applications milestone APPN Advanced Peer-to-Peer Network (IBM) APPS Advanced Peripheral Processing Solution (National Semiconductors Inc.) APPS Applications APPV Advanced Pay-Per-View APPX Appendix APR Additional (Overtime) Period Rate APR Alarm Processing Remote APR Alternate Path Retry APR Automatic Position Reporting APRICOT Asia Pacific Regional Internet Conference on Operational Technologies APRL Average Power Return Loss APROX APPROXimate APS Administrative Processor System APS Advanced Power System(s) APS Advanced Printing Services APS Alarm Processing Subsystem APS Alternate Path Selection APS American Protective Services APS Application Server APS Asynchronous Protocol Specification APS Attached Processor System APS Attendant Pay Station APS Attended Pay Station APS Automatic Protection Switch APS Automatic Protection Switching APS Auxiliary Power Source APS/DP Automatic Protection Switching with Diverse Protection APSB All-Primary/Some Backup APSO Audio Precision System One APSS Automated Procedures Scheduling System APT Address Partition Terminator APT Advanced Parallel Technology APT Advanced Photoscale Technology APT Application Process Title APT Application Systems (Swedish) APT AT&T/Philips APT Automatic Programmed Tool APT Automatic Progression Testing APTU African Postal and Telecommunication Union APU Application Processing Unit APU Arithmetic Processing Unit APU Arithmetic Processor Unit APU Audio Presentation Unit APUX Application Processor Running Unix APX AppExpert Source File APX Autoplex APX10 Autoplex-10 APX-10 Autoplex-10 APX100 Autoplex-100 APX-100 Autoplex-100 APX1000 Autoplex-1000 APX-1000 Autoplex-1000 APZ Control System (Swedish) AQ Autoquote AQ ISO country code for Antarctica AQC Annual Quality Congress AQF Advanced Query Feature AQL Acceptable Quality Level AQL Acceptance Quality Level AQP Association for Quality and Participation AQSE Abstract Quality System Element AQUA Adaptive Quantized Update Algorithm AQUARIUS A Query And Retrieval Intractive Utility System AR Access Rate AR Access Rule AR Action Register AR Action Request AR Activation Request AR Activity Resume AR Address Register AR Allocated Rate AR Alternate Route AR Alternate Routed AR Alternate Routing AR Analysis Report AR Archive Library AR Aspect Ratio AR Audible Ringing AR Automatic Recall AR Awaiting Reply AR ISO country code for Argentine Republic (Argentina) AR U.S. postal code for Arkansas A-R Actual Operators to Required Operators AR1 Alignment Range 1 AR2 Alignment Range 2 ARA Agents for Remote Access ARA Alerting/Registration Area ARA AppleTalk Remote Access ARA Automatic Recall Activate ARA Automatic Resource Assignment ARABSAT ARAB SATellite Communications Organization ARAC Automatic Recall Active/Inactive Status ARACC Automatic Recall Access Codes ARAM Audio RAM ARAM Automatic Recall for Analog Member of EKTS ARAN Automatic Room Authorization Number ARAP Apple Remote Access Protocol ARB All Routes Busy ARB ARBitrary (waveform generator) ARB Architecture Review Board ARB Automatic Recall Billing Records ARC Access Request Channel ARC Access Rights Class arc Action Request Command ARC Adaptive Rate Conversion ARC Administrative Radio Conference ARC Alternate Route Cancel ARC Army Reuse Center ARC Attached Resource Computer ARC Attendant Recall ARC Automatic Reception Control (mono/stereo) ARCC Austrian Remote Cluster Controller ARCH Access Response Channel ARCH Architecture ARCHID Architecture Identifier ARCHNL AMA Remote Channel ARCM Automatic Recall/Callback Currently Active Monitoring ARD Access Rights Details ARD Adaptive RAKE Diversity ARD Arbeitsgemeinschaft der Rundfunkanstalten der Bundesrepublik Deutschland ARD Automatic Recall Deactivate ARD Automatic Ring Down ARDDN Automatic Recall Dialable Directory Number ARDIS Advanced Radio Data Information Service ARDN Automatic Route Selection Directory Number ARDS AT&T Communications Reference Distribution System ARDS AT&T Reference Distribution System ARDT Automated Radio Deployment Tool ARDT Automatic Recall Date and Time ARDY Asynchronous Ready ARE All Routes Explore ARE All Routes Explorer ARF Abort, Retry, Fail ARF Alarm Reporting Function ARF Alternative Routing From ARF Analog Receiver Filter ARF AT&T Communications Reference Frequency ARF AT&T Reference Frequency ARF Automatic Rate Fallback ARFA Allied Radio Frequency Agency ARFCN Absolute Radio Frequency Channel Number ARG Additional Redirecting Number ARG Argument ARI Access Rights Identity ARI Access Rule Index ARI Airborne Radio Instrument ARI Autofahrer-Rundfunk-Information ARI Automatic Room Identification ARI/FCI Address Recognized Indicator/Frame Copied Indicator (MAC/token ring) ARIA Automatic Recall Invalid Action ARIB Association of Radio Industries and Broadcasting ARIES Agent Related Interaction Enhancements for Services ARINC Aeronautical Radio, Inc. ARIS Aggregate Route-Based IP Switching ARIS Aggregated Route-Based IP Switching ARJ Admission Reject ARL Acceptable Reliability Level ARL Acoustic Reference Level ARL Adjusted Ring Length ARL Audio Reference Level ARL Average Running Length ARLB Automatic Recovery from Low Battery ARLB Automatic Return from Low Battery ARLCN AMA Remote Logical Channel Number ARLL Advanced Run-Length-Limited (magnetic recording code) ARM Advanced RISC Machines ARM Annotated C++ Reference Manual ARM Applications Reference Model ARM Architecture Reference Manual ARM Asynchronous Response Mode ARM Availability, Reliability, Maintainability ARMA Automatic Recall Maximum Allowed ARMAP Adaptive Reservation Multiple Access Protocol ARMIS Automated Reporting of Mechanized Information Systems ARMIS Automatic Recording Management Information System ARN Additional Redirection Number ARN Advanced Remote Node ARN Alternate Route Number ARN Authentication Random Number ARO Alternate Route on Overflow ARO Audio Receive Only ARP Address Resolution Protocol (TCP/IP-DoD) ARP Autonomous Reuse Partitioning ARPA Advanced Research Projects Agency ARPAnet Advanced Research Projects Agency Network ARPL Adjust RPL Field (80x86 inst) ARPOSE Specification de l'ARchitecture et des Protocoles OSI permettant de rendre le services ARQ Admission Request ARQ Automatic Repeat Request ARQ Automatic Request for Repeat ARQ Automatic Request for Retransmission ARQ Automatic Retransmission Request arr Action Request Report ARR Attributes for Representing Relationship ARR Automatic Rerouting ARRC Advanced Radiodata Research Centre ARRE Alarm Receiving and Reporting Equipment ARRL American Radio Relay League ARS Action Request System ARS Action Response System ARS Active Root Service ARS Alarm Reporting System ARS Ameritech Reconfiguration Service ARS Automatic Route Selection ARS Automatic Route Selector ARSB Automated Repair Service Bureau ARS-D Automatic Route Selection-Deluxe ARSP Automatic Route Selection Pattern ARSQ Automatic Route Selection Queuing ART Alternative Routing To ART Amplitude Radio Transmission ART Audible Ringing Tone ART Audit Report Task ART Automated Reasoning Tool ART Automatic Recall Toggle ART Automatic Reporting Telephone ARTA Apple Real Time Architecture ARTEARTE Alpha Run Time Environment ARTEMIS Advanced Research and Technology Mission ARTHUR Automatic Radiocommunication system for Traffic emergency situations on Highways ARTIC A Real-Time Interface Coprocessor ARTO Automatic Recall Time Out ARTOB Amateur Radio Transponder On Balloon ARTS AIN Response Translation Simplification ARTS American Radio Telephone System ARTS ARSnet Router Traffic Statistics ARTYPE Automatic Recall Reactivation Type ARU Alarm Relay Unit ARU Analog Radio Unit ARU Application Resource Unit ARU Audio Response Unit ARU Automated Response Unit arv Action Request View ARW Automatic Roaming Wide AS Abstract Service AS Access Signaling AS Access Switch AS Access System AS Active Service AS Activity Start AS Address Signal AS Address Strobe AS Administrative System AS Affects AS Alignment Signal AS Analog Signal As Anschluss (Access Unit/Extension) AS Answer Supervision AS Application Selection AS Application Supervisor AS Application System (IBM) AS Area Selection (TETRA) AS Assisted Service AS Association Specification AS Authentication Server AS Autonomous System AS ISO country code for American Samoa AS Start of Answer AS/400 Application System/400 AS/LIDB LIDB Administrative System AS/SYS Access and Storage System AS/U Advanced Server for UNIX ASA Addressable Service Area ASA Adjunct Software Architecture ASA Advanced SCSI Architecture ASA American Standard Association (ANSI today) ASA II Advanced SCSI Architecture II A-SAE ASE Service Alteration Element ASAI Adjunct/Switch Application Interface ASAP Accelerated Speech Application Programming ASAP As Soon As Possible ASAP Automated Software Change Approval Passport ASAP Automatic Self-Allocating Processor (Convex Inc. Super Comp.) ASAP Automatic Service Activation Program ASB Automatic Speed Buffering ASBH Average Season Busy Hour ASBHCA Average Season Busy Hour Call Attempts ASBHCC Average Season Busy Hour Call Completions ASBR Autonomous System Boundary Router ASC Abnormal Station Code ASC Accredited Standard(s) Committee ASC Active Service Component ASC Active Signal Correction ASC Advanced Scientific Computer ASC AIN Switch Capabilities ASC American Satellite Corporation ASC Any Switch Company ASC Application Service Centres ASC Authorized Support Center ASC Automatic Sensitivity Control ASC Automatic Sequence Control ASC Available Spare Capacity ASC X3 Information Technology of Information Technology Industry Council (ITI) (formerly CBEMA) ASCC Advanced Software Construction Center ASCI Advanced Speech Call Items ASCII American Standard Code for Information Interchange ASCOT Assessment of Systems and Components for Optical Telecommunications ASCR Asymmetric Silicon Controlled Rectifier ASCS Alarm Sending and Checking System ASD Answer Signal Delay ASD Answer Supervision Delay ASD AutoSave Document File ASDA Advanced Silence Detection Algorithm ASDE Airport Surface Detection Equipment ASDP Alternative Software Delivery Program ASDS ACCUNET Spectrum of Digital Services ASDS ACCUNET Switched Digital Service ASE Active Service Element ASE Amplified Spontaneous Emission ASE Application Service Element ASE ATM Switching Element ASEAN Association of South East Asian Nations ASEANIS ASEAN Indonesia-Singapore submarine cable ASEANPS ASEAN Philippines-Singapore submarine cable ASEM Air System Element Manager ASEQ Allocation Sequence Number ASEQ Ascending Sequence ASET Adaptive Sub-band Excitation Transform ASF Active Streaming Format ASF Administrative Storage Facility (NAA-DSA-Bull) ASF Application Support Function ASF Aspect Source Flag ASF Association Framework ASF Automatic Sheet Feeder ASFB Application Specific Functional Block ASG Abstract Service Group ASG Applications Support Group ASG Ascend Signaling Gateway ASHE A Simple HTML Editor ASHRAE American Society of Heating, Refrigerating, and Air-Conditioning Engineers ASI Alternate Space Inversion ASI Ameritech Services, Inc. ASI Application Software Interface ASIC Application-Specific Integrated Circuit ASIM Application Specific Integrated Module ASIM Asynchronous/Synchronous Interface Module ASIP Ameritech Service Improvement Program ASIS Application-Specific Integrated Sensor ASK Accessing Software Knowledge ASK Amplitude Shift Keying asl above sea-level ASL Adaptive Speed Leveling ASL Agent Status Lamp ASL Analog Subscriber Line ASL Arithmetic Shift Left ASLIP Abbreviated Serial Line Internet Protocol ASLM Apple Shared Library Manager ASLT Advanced Solid Logic Technology ASM Abstract Service Module ASM Abstract Syntax Machine ASM Address Space Manager ASM Analog Station Module ASM Assembler ASM Assembly Language ASM Assembly Language File ASM Association Mode ASM ATM Service Multiplexer ASM ATM Switched Services Module ASM ATM Switching Module ASMA Asynchronous Serial Manchestercode Adapter ASMC Advanced Semiconductor Manufacturing Company ASMDR Advanced Station Message Detail Recording ASME American Society of Mechanical Engineers ASMM ATM Service Management Module ASMP Asymmetric Multiprocessing ASMS Advanced Service Management System ASMS Advanced Strategic Missile System ASN Abstract Syntax Notation ASN Access Stack Node ASN Actual Slot Number ASN Alcatel Submarine Networks ASN ATM Service Node ASN ATM Switching Network ASN Authentication Sequence Number ASN.1 Abstract Syntax Notation n° 1 (ITU/ISO) ASN-1 Abstract Syntax Notation One A-SNE ASE Service Notification Element ASO Application Service Object ASO Automatic Service Observing ASOG Access Service Order Guidelines ASOS Advanced Services Operations System ASP Abstract Service Primitive ASP Access Service Provider ASP Access Signal Processor ASP Active Server Page ASP Advanced Services Platform ASP Agent Service Participant ASP Alternate Service Provider ASP Application Service Part ASP Application Signalling Processor ASP Application Software Package ASP Application Specific Parameter ASP Asia-South Pacific ASP Assignment Source Point ASP Association of Service Providers ASP Association of Shareware Professionals ASP Auxiliary Service Position ASPA AMA Specialized Processing Application ASPEC Audio Spectrum Coding ASPI Advanced SCSI Programming Interface ASPI Advanced SCSI Protocol Interface ASPI Atlanta Signal Processors, Inc. ASPR Automated Split-Referral ASPS Accounting Statistical Processing System ASPS Accounting Statistics Processing System ASPS Advanced Space Processor Subsystem ASQ Active Service Queue ASQ Automated Status Query ASQC American Society for Quality Control ASR Abstract Test Suite Selection Rules ASR Access Service Request ASR Adaptive Sample Rate ASR Address Space Register ASR Alarm State Request ASR Always-Start-from-Root ASR Answer/Seizure Ratio ASR Answer-to-Seizure Ratio ASR Arithmetic Shift Right ASR Automatic Send/Receive (TTY) ASR Automatic Set Relocation ASR Automatic Speech Recognition ASR Automatic Standard Recognition (television) ASRAM Application-Specific Random Access Memory ASSET Advanced Switchable Signaling and Echo-Canceler Terminal ASSI Alias Short Subscriber Identity (TETRA) AST Abstract Syntax Tree AST Activity Switch Timer AST Advanced Screen Telephony AST Advanced Screen-based Telephony AST Advanced Systems & Technology AST Alaska Standard Time AST Anti-Sidetone AST Asynchronous Service Trap AST Asynchronous System Trap AST Atlantic Standard Time AST Automatic System Testing AST/SYS Access, Storage, and Transfer System ASTA Areas of Service State ASTAP Advanced STatistical Analysis Program ASTI At Some TIme ASTM American Society for Testing and Materials ASTP Advanced Systems and Technology Programme ASTRA Automated Service and Trouble Report Analysis ASTTL Advanced Schottky Transistor-Transistor Logic ASU Acknowledgement Signal Unit ASU Application Specific Unit ASU ATM Service Unit ASVD Analog Simultaneous Voice and Data ASW All Seems Well ASX ATM Switch Module ASYNC Asynchronous AT Abstract Terminal AT Access Tandem AT Access Terminal AT Access Termination AT Advanced Technology AT Alternate Time AT Answer Timing AT Attention AT Attenuation AT Austria Telecom AT Austria Telecommunication AT Automated Testing at Internet country code for Austria AT ISO country code for Republic of Austria AT&T American Telephone and Telegraph AT&T American Telephone and Telegraph Company AT/SSP Access Tandem/Service Switching Point AT/SYS Access and Transfer System ATA Adaptive Transform Audio coding ATA Address Translation Agent ATA Analog Terminal Adapter ATA Analogue Terminals and Access ATA AT Attachment Interface ATA Automatic Trouble Analysis ATA-2 AT Attachment Interface-Second Edition ATAC Adaptive Transformation Audio Coding ATACS Automated Test and Administration Control System ATAF ATM Test Access Function ATAPI AT Attachment Packet Interface ATB Address Translation Buffer ATB All Trunks Busy ATBA Automatic Test Break and Access ATBS Attendant Busy Treatment ATC Abstract Test Case ATC Access Tandem to Carrier ATC Access To Carrier ATC Adaptive Transform Coding ATC Address Translation Cache ATC Advanced Technology Center ATC Air Traffic Control ATC ATM Layer Transfer Capability ATC Auto Tune Combiner ATC Automated Test Case ATC Automatic Threshold Control ATC Automatic Time and Charges ATC Automatic Timing Control ATCC Advanced Test Control Center ATC-HS Adaptive Transform Coding Harmonic Scaling ATCP Ameritec Traffic Control Program ATCP AppleTalk Control Protocol ATCP CI ATCP Command Interpreter ATCRBS Air Traffic Control Radar Beacon System ATD Access Tandem Domestic ATD Asynchronous Time Division ATD Asynchronous Time Division (multiplex) ATD ATM Traffic Descriptor ATD Audio Tone Detection ATD Audio Tone Detector ATDB Active Terminal Data Block ATDE Adaptive Time Domain Equalization ATDE Adaptive Time Domain Equalizer ATDM Asynchronous Time Division Multiplex ATDM Asynchronous Time Division Multiplexing ATDM Asynchronous Time-Division Multiplexed ATDMA Advanced TDMA Mobile Access ATDN Advanced Technology Demonstration Network ATDNet Advanced Technology Demonstration Network ATDT Terminal Attach/Detach ATE ATM Terminating Equipment ATE Automated Test Environment ATE Automated Test Equipment ATE Automatic Telephone Exchange ATE Automatic Test Equipment ATeam Architecture Team ATEC Authorized Technical Education Center ATEL Advanced Television Evaluation Laboratory ATF Advanced Tactical Fighter (United States Air Force) ATF Analog Transmitter Filter ATG Air-to-Ground ATG Applied Technology Group ATG Automatic Test Generator ATHB Active Terminal Header Block ATI Access Tandem International ATI Alarm Trouble Indicator ATIM Ad Hoc TIM ATIS Alliance for Telecommunications Industry Solutions ATIS Automatic Terminal Information Service ATK Andrew Toolkit ATL ActiveX Template Library ATL Advanced Technology Laboratory ATL Atlanta ATLAS Abbreviated Test Language for All Systems ATLAS Abbreviated Test Language for Avionics Systems ATLS Automatic Test Load Simulator ATM Abstract Test Method ATM Adobe Type Manager ATM Advanced Testing Methods (former ETSI TC, now MTS) ATM Alternative Test Method ATM Asynchronous Time Multiplexing ATM Asynchronous Transfer Mode ATM ATM Sublayer ATM Austrian Trunk Module ATM Automatic Teller Machine (Bancomat) ATM Autovon Trunk Module ATM25 25 Mbps ATM Physical Layer ATMARP Asynchronous Transfer Mode Address Resolution Protocol ATM-ARP ATM Address Resolution Protocol ATME Automatic Transmission Measuring Equipment ATMF ATM Forum ATM-F ATM Forum ATML Advanced Telecommunications Modules Ltd. ATMM ATM Management ATM-NM ATM Network Management ATMOS ATM Optical Switching ATMP Ascend Tunnel Management Protocol ATMR Asynchronous Transfer Mode Ring ATMR ATM Ring ATMS Advanced Text Management System ATMS Automatic Transmission Measurement System ATMS Automatic Transmission Measuring System ATN Attendant ATN ATtentioN (IEEE-488 bus signal) ATO Advanced Technology Offering ATO MDII: Address Complete Timeout ATOC Automated TUSA Operator Console A-TO-D Analogue-to Digital ATOM Announcements, Tones, and Occurrences Team ATOMICS Advanced Traffic Observation and Management Information Collecting System ATP Acceptance Test Plan ATP Acceptance Test Procedure ATP Access Transport Parameter ATP Advanced Technology Program ATP Advanced Telecommunications Program (of LLNL) ATP Advanced Token Parser ATP Alarm Termination Paddle card ATP All Tests Passed ATP Automated Trunk Provisioning ATP Automatic Test Processor ATPC Adaptive Transmit Power Control ATPC Alarm Termination Paddle Card ATPC Automatic Transmit Power Control ATPG Automatic Test Pattern Generation ATPG Automatic Test Pattern Generator ATR Advanced Telecommunications Research Institute ATR Alcatel Telecommunications Review ATR Answer to Reset ATR Answering Time Recorder ATR Anti-Transmit-Receive tube ATR Audio Tape-Recorder ATR Automatic Tape Reader ATR Automatic Transmitter ATR Automatic Trunk Routining ATRC Advanced Television Research Consortium ATRC Alternate Terminating Restriction Code ATRS Automatic Trouble Reporting System ATS Abstract Test Suite(s) ATS Activity Tracking System ATS Administrative Terminal System ATS Advanced Telecom Services ATS Air Traffic Services ATS Alternate Through Stream ATS Applications Technology Satellite ATS Asynchronous Time Sharing ATS Automatic Test System ATSC Advanced Television Systems Commission ATSC Advanced Television Systems Committee ATSC Australian Telecommunication Standardization Authority ATSC Australian Telecommunications Standardization Committee ATSI Alias TETRA Subscriber Identity ATSI American Telecommunications Standards Institute ATSS Americas Telecommunications Standards Symposium ATT Active Transaction Table ATT Advanced Traffic Telematics ATT American Telephone and Telegraph Company ATT AT&T Technology (periodical) ATT Attach ATT Attendant ATT Attended Public Telephone ATT ATTenuator ATT Automatic Toll Ticketing ATT Automatic Trunk Testing ATT (flag) ATTach ATTC Advanced Television Test Center ATTC Automatic Transmission Test and Control ATTCOM AT&T Communications ATTD Avalanche Transit Time Diode ATTF Automatic Toll Ticket Facilities ATTH ATM-To-The-Home ATTI AT&T International ATTIND Attendant Access Code ATTIS AT&T Information Systems ATTIX AT&T Interexchange Carrier ATTJ AT&T Technical Journal ATTN Attention ATTN ATTenuatioN ATTR Attributes ATTRCLF Attendant Recall After Flash ATTT AT&T Technologies ATTT AT&T Technology (periodical) ATTY Administrative TTY ATU ADSL Terminal Unit ATU ADSL Transmission Unit ATU Analog Test Unit ATU Antenna Tuning Unit ATU-C ADSL Terminal Unit- Central Office ATUG Australia Telecommunications User Group ATUP Australian Telephone User Part ATUR Automatic Telephone Using Radio ATU-R ADSL Terminal Unit- Remote ATURS Automatic Traffic Usage Recording System ATV Advanced Television ATV Amateur TeleVision ATV Automated Test Vehicle ATVA American Television Alliance ATX Audiotext ATX Automatic Telex Exchange AU Access Unit AU Adaptation Unit AU Administrative Unit AU Alternate Use AU Answer Unit AU Application Unit AU Arithmetic Unit AU Autonomous au Internet country code for Australia AU ISO country code for Commonwealth of Australia AU-3 Administrative Unit-Level 3 AU-4 Administrative Unit-Level 4 AUAP Accelerated Unified Approval Procedure (ETSI) AUC Authentication Center AuC Authentication Centre AUCD Authorization Code Digits AUD AUDible AUD Audit AUD Automatic Dial AuDID Audit Data Identifier Audix Audio Information Exchange System AUDR Audible Ring AUDT Audit AUG Administrative Unit Group AUI Administration User Interface AUI ASE/USA Interface AUI Attachment Unit Interface AUI Attachment Unit Interface (IEEE 802.3) AUIS Andrew User Interface System AUL Automatic Line AUMA Autonomous-and-Management AU-n Administrative Unit-Level n AUP Acceptable Use Policy AUP Administrative Utility Programs (NAA-DSA-Bull) AUP Appropriate Use Policy AUPI Administrative Utility Programmatics Interface (NAA-DSA-Bull) AURP AppleTalk Update Routing Protocol AURST Autonomous-and-Restricted AUSPAC Australian Packet Switching Network AUSTEL Australian Telecommunications Authority AUSTEL AUStralian TELecommunications industry AUT Access Upsizing Tools AUT Authentication AUT Authorised AUT AUThority AUT(H) AUThentication AUTC Authentication AUTEL Asociación de Usuarios de TELecomunicaciones (E) AUTH Authentication AUTH Authorization and Account Codes AUTH Authorization Codes AUTH_KEY AUTHentication function identifier AUTH_NO AUTHentication function to be used AUTH_PREF PREFerred CPP AUTHentication function AUTH_REQ AUTHentication REQuest Information Element AUTH_RES AUTHentication RESponse Information Element AUTH2_REQ Alternative AUTHentication REQuest Information Element AUTH2_RES Alternative AUTHentication RESponse Information Element AUTHAMA Authorization Code AMA AUTO Automatic AUTODIN Automatic Digital Network AUTODISP Automatic Display AUTOVON Automatic Voice Network AUTZ Authorization Code AUU ATM User-to-ATM User Indication AUU ATM-User-to-ATM-User information AUUSIX Acceptance of User-to-User Signaling from an Interexchange Carrier AUVAL Authorization Code Validation AUX AUXiliary AUXP AUXiliary Pattern AV Anti-Virus AV Application Version AV Association Validator AV ATM-VME Adaptor AV Audio/Visual AV AudioVision AV Audiovisual AV Authenticity Verification AV Autovon AV Available AV1 ATM-VME Adaptor, Type 1 AVA Attribute Value Assertion AVC Audio for Video-Conferencing AVC AudioVisual Connection AVC Automatic Volume Control AVCS Advanced Vidicon Camera System AVD Alternate Voice/Data AVD Alternating Voice and Data AVD Audio/Video Driver AVDP Advanced Video Display Processor AVDS Advanced Voice Design System AVDU Audiovisual Display Unit AVEC Auxiliary Video Extension Connector AVG Average AVI Audio Video Interleave (multimedia format) AVI AudioVisual Information AVI Automatic Vehicle Identification AVIOS American Voice Input & Output Society AVIS Audio-Visual Interactive Service AVJ Adaptive Virtual Junctor AVK Audio-Video Kernel AVL Adelson-Velskii and Landis AVL Application Version List AVL Audio/Video Library AVL Available AVLSI Advanced Very Large Scale Integration AVM Audio Visual Management AVMMS Audio Visual Multimedia Services AVMMS AudioVisual/MultiMedia Services (TSAG:ITU-TS) AVO Audiovisual Object AVON AUTOVON AVP Advanced VLSI Packaging AVP Assistant Vice-President AVP Attribute Value Pair AVP Automation Verification Prime AVP AUTOVON Precedence Level AVPN ATM Virtual Private Network AVPS Audio Visual Protocol Stack AVR Audio Visual Research AVR Automatic Voltage Regulation AVR Automatic Voltage Regulator AVR Automatic Volume Recognition AVS Advanced Voice Services AVS Application View Set AVS Application Visualization System AVS Audio and Visual Services AVS Audio/Video Server AVSS Audio/Video Support System AVSS Audiovisual Subsystem AVSSCS Audio-Visual Service Specific Convergence Sublayer aVSt aufnehmende Vermittlungsstelle (Take-up exchange for foreign connection) AVT AUTOVON Termination AVX ATM-VME Adaptor AVx ATM-VME Adaptor, Type x AW Addison-Wesley AW Administrative Weight AW ISO country code for Aruba AWA A W & Associates AWACS Airborn Warning And Control System (military avionics) AWALA Advanced Wireless Architectures and Lead Applications AWC Area-Wide Centrex AWCDM Adaptively Weighted Code Division Multiplexing AWG American Wire Gauge (system for specification of wire diameter) AWG Arrayed Waveguide Grating AWGN Additive White Gaussian Noise a-wire A-wire of the two wire PSTN line awk Aho, Weinberger, and Kernighan AWL Addison-Wesley Longman AWRAP Automated WRAP AXM ATM Multiplex Module AXM ATM Multiplexing Module AXS Application Transfer Service AXU Alarm Cross-Connect Unit AXU Auxiliary Cross-Connect Unit AYT Are You There? AZ AZimuth AZ ISO country code for Azerbaijan AZ U.S. postal code for Arizona AZC All-Zeroes Code AZ-EL AZimuth-Elevation
B Bearer B Bearer channel B Bidirectional (frame) B Billion B Binary B Blue B Bold (HTML tag) b BOOL (int) B Bridge (link) B Bug b b-wire of the two wire PSTN line B Byte B Interpolative (Between) B channel Traffic channel (64 kbit/s; 32 kbit/s in CT2) B&C Billing and Collections B&W Black and White B/G Battery and Ground b/s Bits per Second B/W Black/White B/W Bothway b1 b-wire connection at the TE input line b2 b-wire connection at the output port of a series-connected TE B3ZS Bipolar with 3 Zeros Substitution B6ZS Bipolar with 6 Zeros Substitution B8RZ Bipolar violations every 8th pulse, Return to Zero B8ZS Bipolar with 8 Zeros Substitution B911 Basic 911 Emergency Service BA Asynchronous Balanced Mode BA Basic Access BA Basic Algorithm BA BCCH Allocation BA Bell Atlantic BA Bridger Amplifier BA Broadcast Control CHannel Allocation BA Buffer Allocation BA Bus Arbitration BA Bus Available BA ISO country code for Bosnia and Herzegovina BaAs Basisanschluss (Basic Access) BAB Basic Automation Board BABS Blind Approach Beacon System BABT British Approval Board for Telecommunications BAC Balanced Asynchronous Class (HDLC) BAC Billing and Collection BAC Block-Acknowledged Counter BAC Buffer Address Counter BAC Bus Access Circuit BAC Bus Access Controller BACN Bank ACount Number BACP Bandwidth Allocation Control Protocol BACT Advisory Committee on Telecommunications of Small Businesses (UK) BAD BRI Agent Decoupling BAF Bellcore AMA Format BAF Broadband Access Facilities BAG Circuit Group Blocking Acknowledge message BAGNET Bay Area Gigabit Network BAGS BASS, GSBT, GETAR, Setup BAHAMA Broadband Adaptive Homing Asynchronous Transfer Mode Architecture BAI Border Area Indicator BAIC Barring of All Incoming Calls BAIC Barring of All Incoming Calls (supplementary service) BAK Backup File BAKT Basisanschlusskonzentrator (Basic Access Concentrator) BAL Balance BAL BAtch Length BAL Bearer Channel Allocate BALI Burst Admission Based on Load and Interference BALUN Balanced/Unbalanced BAM Basic Access Method BAM Basic Access Module BAM Bell Atlantic Mobile BAM Block Allocating Map BAMA Beacon-Assisted Multiple Access BAMM Bidirectional Asymmetric Multipoint-to-Multipoint BAN Billing Account Number BAN Boundary Access Node BANCMOS Bipolar Analog CMOS BANCS Bell Administrative Network Communications System BAND OUTWATS Band Numbers BANDIC BAND Interexchange Carrier BANI Bell Atlantic Network Integration BAOC Barring of All Outgoing Calls BAOC Barring of All Outgoing Calls (supplementary service) BAP Bandwidth Allocation Protocol BAP Basic Assembler Program BAP Business Affiliate Program BAPI Barcelona-Pisa Italy submarine cable BAPM Bidirectional Asymmetric Point-to-Multipoint BAPT Bundesamt für Post und Telekommunikation (D) BAPTA Bearing And Power Transfer Assembly BAR Basic Algorithm with Reassignment BARGEN Barcelona-Genoa submarine cable BARO Barcelona-Rome submarine cable BARRIT BARRier Injection and Transit time diode BARS Basic Automatic Route Selection BAS Base Layer BAS BASic BAS Basic Activity Subset (OSI-SL) BAS BASIC File BAS Bearer Channel Associate BAS Bit Allocation Signal BAS Bit Rate Allocation Signal BAS Broadband Access Server BAs Buendelanschluss (Trunk Group/Wire Group) BASAR Building Agents Supporting Adaptive Retrieval BASE Base Layer BASE Basic ASE BASE Broadband ATM/STM Electrical dual bus BASET BASE Type bash Bourne Again Shell BASIC Beginner's All Purpose Symbolic Instruction Code BAsize Buffer Allocation Size BASM Built-in Assembler BASN Block-Acknowledged Sequence Number BASS Basic Session Service BAT Bandwidth Allocation Threshold BAT Batch File BAT Battery BAT Bearer Channel Attribute BAT Bell Atlantic BAT Billing Architecture Team BAT Block Address Translation BAT BRI Architecture Team BATC Block Address Translation Cache BATE Baseband Adaptive Transversal Equalizer BATMOS Bipolar Analog Telecommunications Metal Oxide Semiconductor BATMOS Bipolar Analog Telephony CMOS BATS Bit Access Test System BB BaseBand BB Bluebook BB Bluebox BB Broadband BB ISO country code for Barbados BBA Broadband Access BBC Bearer Channel Break Connection BBC Bjarne's Better C BBC British Broadcasting Corporation (UK) BBC Broadband Bearer Capability BBC Broadband Coupler BBC Broadcast Bearer Control B-BC Broadband Bearer Capability B-BCC Broadband Bearer Channel Connection BBD Bucket-Brigade Device BB-DACS Broadband DACS BBER Background Block Error Ratio BBF Blue Box Fraud BBG Basic Business Group BBG Basic Business Group Identifier BBG Basic Business Group Number BBGDN BBG Intercom Number BBGDP Basic Business Group Dialing Plan BBG-I ISDN Basic Business Group BBGNAME Basic Business Group Name BBGSG Basic Business Group, Subgroup BBGXLAR BBG Digit Collection, Translations, and Routing BBH Bouncing Busy Hour BBI Begin Bracket Indicator (SNA) BBIU Beginning of BIU BBL Backbone Leg BBM Bandwidth Balancing Mechanism BBN Bolt, Beranek, and Newman BBONI Broadband Optical Network Interface BBP Binary Backoff Procedure (CSMA/CD) BBS Bulletin Board Service BBS Bulletin Board System (mailbox) BBSM Basic Bearer State Machine BBT Board to Board Testing BBT BroadBand Technologies BBTG Broadband Task Group BBU Baseband Unit B-BUS Broadcasting Broadcast/Unknown Server BC Backward Congestion Indicator BC Bar Code BC Basic Call BC Basic Control BC Basic Control BC Batch Counter BC Bearer Capabilities BC Bearer Capability BC Bearer Channel BC Bearer Control BC Bearer Controller BC Bell Canada BC Billing Collector BC Binary Checksum BC Bon de Commande BC Broadcast BC Buffer Control (multimedia) BC Bus Controller Bc Committed Burst Size BC Postal code for British Columbia BC++ Borland C++ BC4 Borland C++ 4.0 BC4.5 Borland C++ 4.5 BC5 Borland C++ 5.0 BC5.0 Borland C++ 5.0 BCA Basic Coverage Area BCA B-Channel Availability BCAF Bearer Control Agent Function BCAJ Borland C++ Add-on for Java BCAL Basic Coin Access Line BCAP Basic EKTS Call Appearance BCap Bearer Capability BCB Borland C++ Builder BCC Base Station Color Code BCC Base transceiver station (BTS) Colour Code BCC Battery Charge Controller BCC Bearer Channel Connection BCC Bearer Connection Component BCC Bearer Connection Control BCC Bellcore Client Company BCC Bit Character Count bcc Blind Carbon Copy BCC Block Check Character BCC Block Check Code BCC Block-Completed Counter BCC Blocked Calls Cleared BCCD Bulk-Channel Charge-Coupled Device BCCH Broadcast Channel BCCH Broadcast Control Channel BCCIS Bell Canada Circuit Inventory System BCCMS BUNI Command and Control Message Set BCCSS Business Customer Communications Switching Study BCD Binary Coded Decimal BCD Binary Coded Digits BCD Blocked Calls Delayed BCD Booked Call Database BCD/B Binary Coded Decimal/Binary BCD/Q Binary Coded Decimal/Quaternary BCDC Bellcore Corporate Data Contract BCDIC Binary Coded Decimal Interchange Code BCDMA Broadband CDMA BCE Base Station Control Equipment BCE Bell Canada Enterprises BCE Bridged Call Exclusion BCEA Bridged Call Exclusion Activate BCEAM Bridged Call Exclusion for Analog Member of EKTS BCED Bridged Call Exclusion Deactivate BCET Bridged Call Exclusion Toggle BCETYPE Bridged Call Exclusion Type BCF Bandwidth Change Confirmation BCF Bandwidth Confirm BCF Base Station Control Function BCF Bearer Control Function BCF Bridge Control Facility BCF Burst Control Function BCFr Bearer Control Function (Radio) BCG Bell Communications Group BCGD Business Communication Group Digits BCH B-Channel BCH Bearer Channel BCH Bids per Circuit per Hour BCH Binary Coded Hexadecimal BCH Bose-Chaudhuri-Hocquenghem BCH Broadcast Channel BCi Backward Call Indicator BCI Backward Call Indicators BCI Backward Congestion Indication BCI Bearer Control Identifier BCI Begin Chain Indicator (SNA) BCI Bell Canada International BCI Bit Count Integrity BCI BroadCast Interference BCID Bearer Channel Identifier BCIE Bearer Capability Information Element BCK BloCK BCL Base Class Library BCL Base ConLan BCL BroadCast Listener BCLID Bulk Calling Line Identification BCLP Buffer of Copies of Local Packets BCM Basic Call Manager BCM Basic Call Model BCM B-Channel Manager BCM Bearer Channel Manager BCM Bell Cablemedia BCM Benchmark Cost Model BCM Binary Coded Matrix BCM Bit-Compression Multiplexer BCM Buried Coarctate Mesastructure BCMRA B-Channel Common Maintainable Resource Aggregate BCMS Bearer Channel Manager Surrogate BCN Backbone Concentrator Node BCN Beacon BCNI Bearer Capability Not Implemented BCNSP Basic Call Network Service Participant BCNU Be seeing you BCO Battery Cut-Off BCO B-Channel Observer BCO Borrow with Channel Ordering BCOB Broadband Connection Oriented Bearer BCOEDN Bearer Capabilities Per OE/DN BCOR BCO with Reassignment BCOS Business Class of Service BCP Basic Call Participant BCP Basic Call Process BCP Basic Call Processing BCP Best Current Practices BCP Billable Calls Per Hour BCP Binary Communications Protocol BCP Binary Control Protocol (BSC) BCPL Basic Computer Programming Language BCPM Barker Code Position Modulation BCPN Business Customer Premises Network BCR Bearer Channel Rate BCR Bearer Channel Resource BCR Bell Communications Research BCR Block Coding Rate BCR Branch Condition Register BCR Business Communications Review (periodical) BCR Byte Count Register BCR Community Bureau of Reference BCRIS Bell Customer Records Information System BCS Basic Coding Structure BCS Basic Combined Subset (OSI-SL) BCS Batch Change Supplement BCS B-Channel Circuit-Switched BCS Bearer Channel Server BCS Bearer Channel Surrogate BCS Block Check Sequence BCS Block Control Signal BCS Boundary Control Stabilization BCS Branch if Carry Set BCS British Computer Society BCS Bulk Change Software BCS Bulk Change Supplement BCS Bus Control System BCS Business Communication System BCS Business Communications Services BCS-1 Binary Compatibility Specification-1 BCSC Business Customer Service Center BCSM Basic Call State Machine BCSM Basic Call State Model BCSMON BCS Monitor BCSN Block-Completed Sequence Number BCST Broadcast BCT Business Communications Terminal BCT Business Cordless Telecommunications system BCT Business Cordless Telephone B-CTI Broadband Computer-Telephony Integration BCTP Buffer of Copies of Transit Packets BCTS Broadcasting and Communications Technology Satellite BCU Battery Control Unit BCUG Bilateral Closed User Group BCUGO Bilateral Closed User Group with Outgoing access BCUP Basic Call-Unrelated Process BCUSP Basic Call User Service Participant BCV Basic Call View BCVT BasiC Virtual Terminal (OSI-SASE) BCW Borland C++ for Windows Bd Baud BD BoarD BD Broadband Descrambling BD Buffer Descriptor BD ISO country code for People's Republic of Bangladesh BDAM Basic Direct-Access Method BDC Backup Domain Controller BdC Bon de Commande BDC Borland Developers Conference BDCL Borrowing with Directional Channel Locking B-DCN Backbone Data Communication Network B-DCS Broadband Digital Cross-Connect System BDE Baseband Distribution Equipment BDE Borland Database Engine BDF Baseband Distribution Frame BDF Binary Distribution Format BDF Bitmap Distribution Format BDG BNR Design Group BDH Board Day Hour BDK Beans Development Kit BDLC Burroughs Data Link Control protocol (Burroughs Inc.) BDM Background Debug Mode BDM Background Debug Monitor BDM Bit Demodulator BDN Bell Data Network BDOS Basic Disk-Operated System BDPSK Binary Differential Phase-Shift Keying BDR Bell Doesn't Ring BDR Border Format File BDRA Boot Data Reserved Area BDS Basic Data Service BDS Billing Data Set BDS Broadband Distribution Shelf BDSL Bisymmetric Digital Subscriber Line BDSL Bisymmetrical Digital Subscriber Line BDT Basic Method with Double Transmission BDT Billing Data Tape BDT Billing Data Template BDT Billing Data Transmitter BDT Billing Design Team BDT Bulk Data Transfer BDT Bureau for Telecommunication Development BDT Telecommunication Development Bureau BDTS Bulk Data Transfer Subsystem BDU Baseband Distribution Unit BDV Breakdown Voltage BDW Block Descriptor Word BDW Buried Distribution Wire BE Band Elimination BE Begin-End Tag BE Beschaltungseinheit (Line Unit) (Connection Unit) BE Best Effort BE Big-Endian BE Block Error BE Business Environment Be Excess Burst Size be Internet country code for Belgium BE ISO country code for Kingdom of Belgium BEA Analoge Beschaltungseinheit (Analog Line Unit) BEA Beschaltungseinheit fur Analogen Anschluss (analogue connection unit) BEAMA Federation of British Electrotechnical and Allied MAnufacturers BEC Basic Error Control BEC Basic Error Correction BEC Belgisch Elektrotechnish Comite (B) BEC British Electrotechnical Committee BECM Band-Edge Component Maximization BECN Backward Explicit Congestion Notification BED Beschaltungseinheit fur Digitalen Anschluss (digital connection unit) BED Digitale Beschaltungseinheit (Digital Line Unit) BEDC Block Error Detection Code BEDO Burst Extended Data Out BEE Bachelor of Electrical Engineering BEE Bit Encoding Errors BEF Band Elimination Filter BEF Band Elimination Filter BEG BEGinning BEITA Business Equipment and Information Technology Association (UK) BEL Bell BEL BELl BEL Business Environment Element BELLCORE Bell Communications Research Bellcore Bell Communications Research BEO Bramalea Engineering Office BEOFD Broadband End of Frame Delimiter BEP Back End Processor BEP Building Entry Protector BEP Burst Error Processor BEPI Block Effective Page Index BEQL BITE Entity Query Language BER Basic Encoding Rules BER Basic Encoding Rules BER Bit Error Rate BER Bit Error Ratio BER Bus ERror BERLU Broadband-Enhanced Remote Line Unit BERP Bit Error Rate Performance BERR Bus Error BERT Bit Error Rate Test BERT Bit Error Rate Testing BERT Bit Error Ratio Test BERT Bit Error Ratio Testing BES Basic Encoding Scheme BeSS Bell Laboratories Storage System BEST Base Employee Satisfaction Team BET Black Entertainment Television BET Business Effectiveness Team BEtag Beginning-End Tag BETR Basic Exchange Telecommunications Radio BETRS Basic Exchange Telecommunications Radio Service BEV Bearer Channel Event BEX Broadband EXchange BEXR Basic Exchange Radio BF Best-Fit BF Boundary Function BF Branching Filter BF ISO country code for Burkina Faso BFA Borrow First Available BFC Base Flexible Calling BFC Briefcase file BFCV Binary Facility Coding Value BFD Basic File Directory BFD Battery Failure Detector BFI Bad Frame Indication BFI Basic File Index BFI Brute Force and Ignorance BFMA Block Failure Mode Analysis BFO Beat Frequency Oscillator BFP Basic Format Packet BFP Basic Format Packetization BFP Basic Freephone BFR Back-Face Removal (3-dimensional electronic imaging) BFR Bridged Frequency Ringing BFR BuFfeR BFS Backplane File System BFS Boot File System BFS Breadth-First Search BFSI Broadcast Fixed System Identity BFSK Binary Frequency Shift Keying BFSR Busy-Flash Seizure Ratio BFT Binary File Transfer BFT-NSF Binary-File Transfer- Non-Standard Facilities Frame BFTP Background File Transfer Program BFU Betriebsfuehrungsumsetzer (Operation Converter) BFU Bit-Field Unit BFU Booster Fan Unit BG BackGround BG Battery Ground BG Below Ground BG Billing Group BG Bus Grant BG Business Group BG ISO country code for People's Republic of Bulgaria BG/EEE Below Ground Electronic Equipment Enclosure BG2WAY Business Group 2-Way BGA Ball Grid Array BGAC Business Group Automatic Callback BGCW Business Group Call Waiting BGCWT Business Group Call Waiting BGDP Business Group Dialing Plan BGDP-I ISDN Business Group Dialing Plan BGE Business Group Element BGE-I ISDN Business Group Element BGI Borland Graphics Interface BGID Business Group Identification BGID Business Group Identifier BGIN Business Group Inward BGL Business Group Line BGMAOR Business Group Member Access Originating Restrictions BGMATR Business Group Member Access Terminating Restrictions BGOUT Business Group Outward BGP Border Gateway Protocol BGP4 Border Gateway Protocol 4 BGP-4 Border Gateway Protocol 4 BGTYPE Business Group Type BGU Basic Grid Unit BH Base Register High Half BH Buried Heterostructure (IC Process) BH Busy Hour BH ISO country code for State of Bahrain BHC Basic Half Call BHC Busy Hour Call BHCA Busy Hour Call Attempt(s) BHCC Busy Hour Call Completion BHCV Busy Hour Call Volume BHDT Broadband Host Digital Terminal BHE Bus High Enable BHL Busy Hour Load BHLF Basic High Layer Function(s) BHLI Broadband High Layer Information B-HLI Broadband High Layer Identifier B-HLI Broadband High Layer Information BHMI BaseHMI BHT Begin Hunt BHT Begin-Hunt Terminal BI all Barring of Incoming call services BI Backward Indicator BI Barge-In BI Barring of All Incoming Calls BI Behaviour Inopportune BI Bidirectional BI Bilingual Interface BI Billing Instructions BI Borland International BI Bus Interface BI ISO country code for Republic of Burundi BIAC Business and Industry Advisory Committee (OECD) BIB Backward Indicator Bit BIBR Backward Indicator Bit Received BIBT Backward Indicator Bit Transmitted BIBX Backward Indicator Bit Expected BIC Barring of Incoming Calls (TETRA) BIC Bearer Identification Code BIC BRISC Interrupt Controller BIC Bus Interface Card BIC Bus Interface Controller BICAP BInary CAPacitor BICI BISDN Inter-Carrier Interface BICI Broadband Inter-Carrier Interface B-ICI BISDN Inter-Carrier Interface B-ICI Broadband Inter-Carrier Interface B-ICI Broadband ISDN Inter-Carrier Interface BiCMOS Bipolar CMOS Bi-CMOS Bipolar Complementary Metal Oxide Semiconductor BI-CONF B-ISDN Conferencing BIC-Roam Barring of Incoming Calls when Roaming outside the HOME PLMN country (supplementary service) BICS Building Industry Consulting Service BICSF Berkeley/IRCAM/CARL Sound File BID Base IDentity code BIDDS Base Information Digital Distribution System BIDI Bidirectional Display BIDS Borland International Data Structures BIDS Broadband Integrated Distributed Star BIDS Broadband Interactive Data Services BIDTC B-Channel Incoming Default Throughput Class BIF Bus Interface BIFP Base Interface Front-end Processor BIGFET Bipolar Insulated Gate Field Effect Transistor BIH Bureau International de l'Heure BIIS Binary Interchange of Information and Signalling BILBO Built-In Logic Block Observation BILGE Binary Load Generation BILGE Binary Load Image BILL Billing BILLDATS Billing Data System BILLTYP Billing Types BIM Broadcast Information Memo BIM Byte-Interleaved Multiplexer BI-MCAST B-ISDN Multi-Casting BI-MCPP B-ISDN Multiple Connections Point to Point BIMOS Bipolar Metal Oxide Semiconductor Bi-MOS Bipolar Metal Oxide Semiconductor BIMPS B-Channel Incoming Maximum Packet Size BIN Barge-In BIN Bearer Channel Set Integrity BIN Binary bin Binary BIN Business Information Network BINAC BINary Automatic Computer BIND Berkeley Internet Name Domain bing Bandwidth ping BINR Basic Intrinsic Noise Ratio BIO Bit Input/Output BIOP Broadcast Interoperability Protocol BIOS Basic Input/Output Services BIOS Basic Input/Output System BIP Bit Interleaved Parity BIP Breaker Interface Panel BIP-N Bit Interleaved Parity N BIPT Belgium Institute for Posts and Telecommunications (B) BIPV Bit Interleaved Parity Violation BIR Bureau International de la Recuperation B-IR Bell-Independent Relations BIS Bearer Independant Service BIS Border Intermediate System BIS British Imperial measurement System BIS Brought Into Service BIS Bureau of Indian Standards BIS Business Information System BISAM Basic Indexed Sequential Access Method BISCOM Business Information Systems-Communications System BISCUS Business Information System/Customer Service BISDN Broadband ISDN B-ISDN Broadband ISDN BISI Busy/Idle Status Indicator B-ISSI Broadband Inter-Switching System Interface BIST Built-In Self Test BISTSS Business Information System/Trunks and Special Services BISUP Broadband ISDN User Part B-ISUP Broadband ISDN User Part BISYNC Binary Synchronous Communication BISYNC BInary SYNchronous Communication (COP, IBM Inc.) BIT Basic Interconnection Test(s) BIT Billing Infrastructure Team bit Binary Digit BIT Built-In Test BITBLT BIT Boundary BLock Transfer BitBlt Bit-Block Transfer BITE Backward Interworking Telephone Event BITE BNR Integrated Test Environment BITE Built In Test Equipment BITEL Bildschirm Telefon BITNET Because It's Time Network BITNIC BITNET Network Information Center BITS Building Integrated Timing Source BITS Building Integrated Timing Supply BITS Building Integrated Timing System BIU Base Station Interface Unit BIU Basic Information Unit (SNA) BIU Bus Interface Unit BIX Building Interoffice Crossconnect BIX Byte Information Exchange BJ ISO country code for People's Republic of Benin BJT Bipolar Junction Transistor BK BasK BK Break BKER Block Error Rate BKI Break-In BKWD BacKWarD BL Base Register Low Half BL Betriebslenkung (Deutsche Telekom regional operations and maintenance centre) BL Betriebslenkung (Operational Routing) BL Blue Lightning BLA Blocking Acknowledgement signal BLA Blocking Acknowledgment message BLAST Balanced Logic Asynchronous Synchronous Transceiver Chip BLAST Blocked Asynchronous Transmission BLC Billing Collector BLC Buffer Location Counter B-LCSE Bidirectional Logical Channel Signalling Entity BLD Binary Load Dump (SPADE) BLD Block of Logical Drawers BLD Build File BLDN Blank Directory Number Treatment BLDNTSP Billing DN Per TSP BLER BLock Error Rate (digital test parameter) BLER Block Error Ratio BLER Block Error Result BLERT Bit-Loss Error Rate Testing BLERT Block Error Rate Test BLERT Block Error Rate Testing BLF Busy Lamp Field BLG Circuit Group Blocking message BLIC Bimos Line Interface Circuit BLID Basic Calling Line ID BLK Block BLKD Blocked BLLF Basic Low Layer Function(s) B-LLI Broadband Low Layer Information BLM Basic Line Monitoring BLM Business Line Management BLM Business Line Manager B-LMI Broadband Local Management Interface BLN Backbone Link Node BLO Blocking message BLO Blocking signal BLOb Binary Large Object BLOS Beyond Line of Sight BLP Bar Line Printer BLP Buffer of Local Packets BLP Bypass Label Processing BLR Bell Laboratories Record BLR Blocking/Unblocking Signal Reception BLS Basic Line Services BLS Block Link Sets BLS Blocking/Unblocking Signal Sending B-LS Broadband-Locking Shift BLSR Bidirectional Line-Switched Ring BLT Block Transfer blt Block Transfer BLTJ AT&T Bell Laboratories Technical Journal BLTJ Lucent Technologies Bell Labs Technical Journal BLU Basic Link Unit BLV Busy Line Verification BLV/INT Busy Line Verification/Operator Interrupt BM Basestation Module Bm Bearer-Mobile Channel BM Buffer Memory BM Button Message Bm Full-rate traffic channel BM ISO country code for Bermuda BMA Board Management Agent BMA Broadband Multiple Access BMA Business Maturity Assessment B-MAP B-field MAP BMAS Business Management System BMC Bearer Channel Make Connection BMC Billing Media Converter BMC Broadcast Message Control BMC Burst Mode Controller BMC II Billing Media Converter II BMI Branch if MInus BML Business Management Layer BMLA Burst Mode Link Analyser BMMI Bilingual Man-Machine Interface BMP Basic Multilingual Plane BMP Bearer Channel Monitor Reliability Stop BMP Bitmap BMP Bitmap File BMP Microsoft Windows Bitmap BMPT Bundesministerium (Bundesamt) für Post und Telekommunikation BMS Backup Management System BMS Bandwidth Management Service BMS Bearer Channel Monitor Reliability Start BMS Broadcast Message Server BMS Broadcast Message System BMS Buffer Management System BMSD Business Management System Description BMSM BMS Manager BMU Basic Measurement Unit BMU Battery Management Unit BMU Bit Manipulation Unit BN Backward Explicit Congestion Notification BN Basic Numbered BN Billing Number BN Billing Number Records BN Bit Number BN Bonding Network BN Bridge Number BN Button Notification BN ISO country code for Brunei Darussalam BNA Backbone Network Architecture (as opposed to CNA) BNA Billing Name and Address BNA Burroughs Network Architecture BNA Burst Not Acquired BNC Bayonet Neill Concelman BNC Bayonet Nut Connector BNC British National Connector BNCSM Basic Non-Call-Associated State Model BNF Backus-Naur Form BNI Blank Number Intercept BNI Broadband Networks Inc. BNIG Before the Next Interaction Globally BNIL Before the Next Interaction Locally BNK Betriebsfuhrung-Netzknoten (Operations Network Node) B-NLS Broadnand-Non-Locking Shift BNM Bureau de Normalisation de la Mechanique BNM Business Network Management BNMR Business Network Modernization Research BNN Balanced Network Number BNN Bridged Night Number BNQ Burst Not Qualified BNR Bell Northern Research BNR Billing Number Record BNRJ BNR Japan BNS Billed Number Screening BNS Billing Number Selection BNS Broadband Network Services BNS Broadband Networking Services BNS Business Network Services B-NT Broadband Network Termination Equipment B-NT1 Broadband Network Termination- Type 1 B-NT2 Broadband Network Termination- Type 2 BNU Basic Networking Utilities BNV Balance Network Value BNZS Binary N Zeros Substitution BO all Barring of Outgoing call services BO Back Off BO Barring of All Outgoing Calls BO Bit-Oriented BO Branch Office BO Byte Ordering BO Invalid Behaviour BO ISO country code for Republic of Bolivia BO EOC Bit-Oriented Embedded Operations Channel BOA Basic Object Adapter BOAM Bell Owned And Maintained BOC Barring of Outcoming Calls (TETRA) BOC Bell Operating Company BOC Bell Operating Company BOC Build-Out Capacitance BOCP Bellcore Operations System Network Communications Protocol BOD Bandwidth On Demand BOD Battery On Discharge BODTC B-Channel Outgoing Default Throughput Class BOF Beginning Of File BOF Beginning of Frame BOF Birds of a Feather BOI Blind Operator Interface BOIC Barring of Outgoing International Calls BOIC Barring of Outgoing International Calls (supplementary service) BOIC-exHC Barring of Outgoing International Calls except those directed to the Home PLMN Country (supplementary service) BOL Beginning of Life BOLD Bit-Oriented Line Discipline (SWIFT) BOM Base Operational Measurements BOM Beginning of Message BOM Bill of Materials BOM Bit-Oriented Message BOMMO Base OMMO BOMPS B-Channel Outgoing Maximum Packet Size BOMSIG Business Object Management Special Interest Group BON Better Object Notation BON Business Object Notation BONALS Type "B" Off-Network Access Lines BOND Bandwidth On Demand BONDING Bandwidth On Demand Interoperability Group BONT Broadband Optical Network Termination BOOTP Bootstrap Protocol BOP Bit Oriented Protocol (SDLC/HDLC) BOP Bit-Oriented Protocol BOPS Billion Operations Per Second BOR Beginning of Recording BORAM Block ORiented Random Access Memory BORSCHT Battery Feed, Overvoltage Protection, Ringing, Supervision, CODEC, Hybrid, and Testing BORSCHT Battery Overvoltage Ringing Signalling Coding Hybrid Test BOS Basic Operating System BOS Basic Operation System BOS Bell Operating System BOS Billing Outputs Specifications BOS Build Options Specification BOSS Billing and Order Support Systems BOSS Binary Object Storage System BOSS Binary Object Streaming Service BOSS Broadband Operations Support System BOSS Business Operations Services and Systems BOT Beginning of Tape BOT Build-Operate-Transfer BOT Busy Override Tone BOTM Beginning Of Tape Mark BP Back Plane BP Back Pressure BP Backplane BP Band Pass BP Base Pointer BP Basic Position BP Basic Purpose BP Bearer Path BP Billing Profile BP Block Parity BP Breakeven Point BP Breakpoint BP Burst Period BP Bypass BPAD Binary Synchronous Communication Packet Assembly/Disassembly BPAM Basic Partition Access Method BPB BIOS Parameter Block BPC B Party Control BPC Bearer Path Connection BPC Bilateral Private Circuit BPC Bits Per Character BPC Broadband Processing Card BPCI BellSouth Personal Communications Inc. BPCS Broadband PCS BPD Backplane Driver BPDU Battery Power Distribution Unit BPDU Bridge Protocol Data Unit BPF Band Pass Filter BPF Berkeley Packet Filter bpi Bits Per Inch BPI Bits Per Inch BPI Business Performance Incentive bpi Bytes Per Inch BPKTGP B-Channel Packet Group BPl Bedienplatz (Operator Position) BPM Beats Per Minute BPMCC Borland Presentation Manager Custom Control BPO British Post Office BPON Broadband over Passive Optical Network BPON Broadband Passive Optical Network BPP Billed Party Preference bpp Bits Per Pixel BPP Bridge Port Pair BPP Buffered Pipe Protocol BPR Backplane Receive BPR Business Process Reengineering BPRZ Bipolar Return to Zero BPS Background Processing State BPS Basic Programming Support bps Bits Per Second BPSK Binary Phase Shift Keying (2-PSK) BPSK Binary Phase-Shift Keying BPSN Broadband Packet-Switched Network BPSR Bidirectional Path-Switched Ring BPSS Basic Packet Switched System BPSS Basic Packet Switching Service BPU Bit boundary block transfer Processing Unit BPU Branch Processing Unit BPV Bipolar Violation BPVO Bipolar Violation Overflow BPX Broadband Packet Exchange BQ Broadcast Quality BQ Burst Qualified BQA Broadcast Quality Applications BQPRIV Block Queries for Private Numbers BQRS Bellcore Quality Registration Services B-QSIG Broadband QSIG BR Base Register BR Basic Rate BR Basic Rate access BR Battery Return BR Battery Reversal BR Billing Report BR Bit Rate BR Branch BR Break BR Bridge BR Bus Request BR Byte Register BR ISO country code for Federative Republic of Brazil BR Line Break (HTML tag) BR Radiocommunications Bureau (ITU) BR0 Base Register 0 BR1 Base Register 1 BR2 Base Register 2 BR3 Base Register 3 BRA Basic Rate Access BRA Basic Rate Area BRACAN Brazil-Canary Islands submarine cable BRAFS Basic Rate Access Functional Set BRAG Basic Rate Agency BRAKS Basic Rate Access Key Set BRAM Brampton BRAMFT Basic Rate Access Meridian Feature Transparency BRAN Broadband Radio Access Network(s) BRB Basic Rate Boundary BRB Be right back BRC Bidirectional Trunk Group Reservation Control BRC Bit Rate Converter BRCO Broadband Restoration Control Office BRCS Business and Residence Custom Services BRCS Business and Residential Customer Services BRCX Bit Rate Converter BRDG Bridge BRE Basic Regular Expression BREV Base Relation Evolution BRF Band Rejection Filter BRF Bandwidth Request Field BRF Bell Rings Faintly BRG Baud Rate Generator BRG Bit Rate Generator BRG Bridging BRG Business Research Group BRGSERV Digital Bridging BRH Bureau of Radiological Health BRI Basic Rate Interface (2x64kbit/s+1x16kbit/s) BRI Basisanschluss (Basic Rate Interface) B-RI Broadband-Repeat Indicator BRICM Basic Rate Interface Communications Module BRIDIAG BRI Diagnostics Task BRIFS Basic Rate Interface Functional Signalling BRI-ISDN Basic Rate ISDN BRIMTC BRI Maintenance Task BRISC BNR Reduced Instruction Set Computer BRISC BNR Reduced Instruction Set Computing BRISP BRI Signaling Processor BRISS BRI Service Supervisor BRIT Basic Rate Interface Trunk BRITE Basic Rate Interface Transmission Extension BRITE Basic Research in Industrial Technologies for Europe BRI-U Basic Rate Interface- U-Interface BRIV Basic Rate Interface Verification BRIV-108 Basic Rate Interface Verification, 108-Type Test Line Loopback BRIV-OE Basic Rate Interface Verification, Office Equipment Assignment Verification BRJ Bandwidth Change Reject BRJ Bandwidth Reject BRK Break BRKT BRacKeT BRL Balance Return Loss BRLC Broadband Remote Line Concentrator BRM Backward RM-cell BRM Basic Reference Model (=RM OSI) BRND Branding BROM Bipolar Read-Only Memory BROUTER Bridge and ROUTER combination (layer 3 internetworking) BRQ Bandwidth Change Request BRQ Bandwidth Request BRS Base Radio Stack (TETRA) BRS Big Red Switch BRS Block Received Signal BRS Buried Ridge Structure BRSU Broadband Remote Switch Unit BRT BIC Relay Test BRT Business Remote Terminal BRUS Brazil-U.S. submarine cable BRV Backup Recovery Vector BS Back Shift BS Back Space BS Backing Store BS Backspace BS BackSpace (ASCII Character) BS Backward Signaling BS Banded Signaling BS Base Station BS Base Station BS Basic Service (group) BS Basic Session BS Bearer Service BS Block Start BS British Standard (UK) BS Broadcast Satellite BS Broadcasting Satellite BS Broadcasting Service BS Brush Style BS Busy Season BS Button Style BS ISO country code for Commonwealth of the Bahamas BSA Base Station Address BSA Basic Service Area BSA Basic Serving Arrangement BSA B-Channel Selection Algorithm BSA Broadband Services Amplifier BSA Business Software Alliance BSAC Broadcasting Spectrum Advisory Committee BSAM Basic Sequential Access Method BSAP Base Station Application Part BSB BackSpace Block BSB BaSeBand (Radio Repeater) BSC Banctec Service Corp BSC Base Station Controller BSC Binary Synchronous Communication BSC Binary Synchronous Communications BSC Broadband Service Controller BSC Browser Information file BSC Business Service Center B-SC Broadband-Sending Complete BSCA Binary Synchronous Communication Adapter BSCA Busy Second Call Attempt BSCL Bell System Common Language BSC-OS Base Station Controller- Operation System BSD Berkeley Software Distribution BSD Berkeley Standard Distribution BSD Busy Disposition BSDB Business Services Database BSDI Berkeley Software Design, Inc. BSDL Boundary-Scan Description Language BSD-LFS BSD Log-Structured File System BSE Basic Service Element BSE Byte Stream Element BSEE Bachelor of Science and Electrical Engineering BSET Business Set BSF BackSpace File BSG Basic Service Group BSG Basic Service Group BSG British Standard Guage BSGDP Business Subgroup Dialing Plan BSGL Branch Systems General Licence (UK) BSGL Branch Systems General License BSH Bourne Shell bsh Bourne Shell BSHR Bidirectional Self-Healing Ring BSHR/2 2-Fiber Bidirectional Self-Healing Ring BSHR/4 4-Fiber Bidirectional Self-Healing Ring BSI Backward Status Indicators BSI Backward Status Information BSI Binary Synchronous Interface BSI Bit Sequence Independence BSI Bit-Stream Information BSI British Standard Institute(ion) (UK) BSI British Standards Institution BSIC Base Station Identity Code BSIC Base transceiver Station Identity Code BSkyB British Sky Satellite Broadcasting BSLT Broadband Subscriber Line Terminal BSM Backward Set-Up Message BSM Base Station Manager BSM Billing Services Management BSM Billing Systems Management BSM Broadband Switching Module BSMM Bidirectional Symmetric Multipoint-to-Multipoint BSMS Base Site Management System BSMS Broadband Service Managent System BSMS Business Service Monitoring System BSN Backward Sequence Number BSN Broadband Service Node BSNR Backward Sequence Number Received BSNT Backward Sequence Number Transmitted BSOD Blue Screen of Death BS-OS The part of the Base Station dealing with the O & M process BSP Bell System Practice BSP Bitsurfer Pro BSP Board Support Package BSP Bootstrap Processor BSPM Bidirectional Symmetric Point-to-Multipoint BSPP Bidirectional Symmetric Point-to-Point BSR BackSpace Record BSR Branch to SubRoutine BSR Broadband Services Receiver BSRF Basic Synchronization Reference Frequency BSRF Bell System Reference Frequency BSRFN Bell System Reference Frequency Network BSRFS Bell System Reference Frequency Standard BSRP Base Station Radio Part (TETRA) BSRS Bell System Repair Specification BSS Base Station Subsystem BSS Base Station System BSS Basic Service Set BSS Basic Session Service BSS Basic Synchronized Subset BSS Basic Synchronized Subset (OSI-SL) BSS Block Started by a Symbol BSS Broadband Switching System BSS Broadcast Satellite Service BSS Broadcasting Satellite Service BSS Business Service System BSSAP Base Station Subsystem Application Part BSSAP Base Station System Application Part BSSGP BSS GPRS Protocol BSSM Basic Service State Machine BSSMAP Base Station Subsystem Management Application Part BSSMAP Base Station Subsystem Mobile Application Part BSSMAP Base Station System Management Application Part BSSMAP BSS Management Part BSSOMAP Base Station System Operation and Maintenance Application Part B-SSP Broadband SSP BST Base Station Transceiver BST Binary Search Tree BST British Summer Time BST Busy Tone BSTJ Bell System Technical Journal B-STP Broadband STP BSTR Basic String BSTS Broadband Series Test System BSU Baseband Switching Unit BSUG Bilateral Closed User Group BSVC Broadcast SVC BSVCI Broadcast Signaling Virtual Channel Identifier BSVR Billing Server BSW Broadcast Services for Windows BSXF Burst Sync Failure (SPADE) BSY Busy BT Bandwidth Time product BT Base Transceiver BT Begin of Tape BT BiT sublayer BT Bit Time BT Bridge Tap BT British Telecom BT Bureau Technique BT Burst Tolerance BT Business Telecommunications BT Business Telecommunications (ETSI TC, later BTC) BT Busy Test BT Busy Tone BT ISO country code for Kingdom of Bhutan BT7 British Telecom Signaling System 7 BTA Basic Trading Area BTA Beijing Telecommunications Administration BTA Broadband Terminal Adaptor BTA Broadcasting Technical Association BTA Broadcasting Technology Association B-TA Broadband Terminal Adapter BTAC BellSouth Technical Assessment Center BTAC Branch Target Address Cache Btag Beginning Tag BTAM Basic Telecommuniactions Access Method (IBM/X.25) BTAM Basic Telecommunications Access Method BTB Branch Target Buffer BTC Broadcast Translation Circuit BTC Business TeleCommunications (ETSI TC, former BT) BTCF Basic Transit Control Function BTDS Bit Transparent Data Service BTE Base Terminating Equipment BTE British Telecommunications Engineering BTE Business Terminal Equipment B-TE Broadband Terminal Equipment BTF Bellcore Technical Forum BTF Binary Transversal Filters BTF Bulk Transfer Function BTI British Telecom International (obsolete) BTI Business Telecom Inc. BTITS Bureau of Telecommunications and Informations Services BTL Bell Telephone Laboratories BTL BT Laboratories BTL Bus Transceiver Logic (National Semiconductor Inc.) BTLD Boot-Time Loadable Driver BTM Bell Telephone Manufacturing BTMA Busy Tone Multiple Access BTN Billing Telephone Number BTNR British Telecom Network Requirement BT-NUP British National User Part BTO Build-To-Order BTO Bulk Translations Output BTP Base Station Transport BTP Buffer of Transit Packets BTP Burst Time Plan BTPC Bus Termination Paddle Card BtPl Betriebsplatz (Maintenance Console) (Operating Position) BTR Behind Tape Reader (system) BTR Billing Trigger Receiver BTR Bit Timing Recovery BTR Blind Transfer Recall BTR British Telecom Requirement BTRI Blind Transfer Recall Identification BTRL British Telecom Research Laboratories BTS Base Transceiver Station BTS Base Transmission Station BTS Burst Time Synchronisation BTSC Broadcast Television Systems Committee BTSM Base Transceiver Station Management BTT Background Telephone Traffic BTTH Broadband To The Home BTTJ BT Technology Journal BTU Basic Transmission Unit (SNA) BTU British Thermal Unit BTUP British Telecom National User Part BTUP British Telecom User Part BTW By the way Btx Bildschirmtext BU Branch Unit BU Branching Unit BU Business Unit BU ISO country code for Burma (obsolete) BUC Context Bundler/Unbundler BUD Bundler, Unbundler and Distributor BUF Buffer BUFR Binary Universal Form for the Representation of Meteorological Data BUI Bilingual User Interface BUIC Blocking/Unblocking of Incoming Calls BUID Bus Unit ID Bul Bulletin BUNI Broadband User/Network Interface BUPT Beijing University of Posts and Telecommunications BUS Broadcast and Unknown Server BUS Broadcast/Unknown Server Bus Business BUT BUTton BUUSI Blocking of User-to-User Signaling Interswitch BUUSIX Blocking of User-to-User Signaling to an IXC BUV Backscatter Ultraviolet Spectrometer BV Behaviour Valid BV Busy Verification BV ISO country code for Bouvet Island BVA Billing Validation Administration BVA Billing Validation Application BVA Billing Validation Authority BVC Billing Validation Center BVC Billing Verification Check BVCI Broadcast Virtual Channel Identifier (B-ISDN) BVCP Banyan Vines Control Protocol BVF Billing Validation File BVG Billing Validation Gateway BVL Busy Verification, Lines BVMS Business Voice Messaging Service BVPN Broadband Virtual Private Network BVR Basic Version Receiver BVR Busy Verify BVS Busy Verification, Stations BVSP Borland Visual Solutions Pack BVT Busy Verification Tone BVT Busy Verification, Trunks BVTONE Busy Verification Tone BVW Backward Volume Wave BVW Belleville BW Bandwidth BW Both-Way BW Buried Wire BW ISO country code for Republic of Botswana BWA Bandwidth Allocator BWA Broadband Wireless Access BWCC Borland Windows Custom Controls BWD Backward BwD Bandwidth-Delay BWF B-Word Facility BWG Birmingham Wire Guage BWI Bell-South Wireless Inc. BWM BandWidth Manager BWM Broadcast Warning Message BWP BATC Write Port BWP0 BATC Write Port Register 0 BWP1 BATC Write Port Register 1 BWP2 BATC Write Port Register 2 BWP3 BATC Write Port Register 3 BWP4 BATC Write Port Register 4 BWP5 BATC Write Port Register 5 BWP6 BATC Write Port Register 6 BWP7 BATC Write Port Register 7 BWQ Buzz Word Quotient BWR Bandwidth Ratio BWSC Broadband Wireless Switching Center BX Base register BxZS Bipolar xth Zero Substitution BY Busy by BYTE (unsigned char) BY ISO country code for Belarus (formerly Byelorussia) BY/DA Busy/Don't Answer BYP BYPass BZ ISO country code for Belize BzA Bereitstellung zur Abnahme (DBPT acceptance testing) BZT Bundesamt für Zulassungen in der Telekommunikation (D) BZV Befristeter Zaehlvergleich (Charging Verification Service)
C Call
C Capacitance
C Capacitance
C Capacitor
C Carry
C CCR Service
C Celsius
c centi (10-2)
C Central side
C Centrigrade
C Changed
c char
C Character
C Clock
C Closed
C Command
C Concatenated
c Concatenated
C Conditional
C Connect
C Constructed
C Container
C Control
C Control field
C Copyright
C Core (Computing Module)
C Cost
C Coulomb
C Cross (link)
C Cyan
C Frame-Copied
C&D Control and Display
C&I Commissioning and Installation
C&I Control and Indication
C&M Conferencing and Messaging
C&MA Construction and Maintenance Agreement
C&P Chesapeake and Potomac (Telephone Co.)
C&S Card and Socket
C&W Cable & Wireless
C&NI Communication & Networking of Information
C&S Control & Switching functions
C/C Cell Controller
C/D Charge-Discharge
C/D Control and Display
C/D Critical Dimension
C/I Carrier to Interference ratio
C/L ConnectionLess
C/N Carrier to Noise Ratio
C/O Connection-Oriented
C/R Challenge/Response pair (TETRA)
C/R Command/Response
C/R Command/Response field bit
C/S Client/Server
C/T Carrier power to noise Temperature ratio
C/T Carrier to Noise Temperature Ratio
C/WS Cost per Work Second
C-11 Container-Level 11
C-12 Container-Level 12
C2 Command and Control
C-2 Container-Level 2
c2d Code to Documentation Tool
C3 Command, Control and Communications
C-3 Container-Level 3
C3I Command, Control, Communications, and Intelligence
C3Q Coverage, Capacity and Quality versus Cost
C-4 Container-Level 4
C4I Command, Control, Communications, Computers, and Intelligence
C6TU CCS6 Test Utility
C7 CCITT Common Channel Signaling System No. 7
C7FPG CCS7 Functional Parameter Group
C7TD CCS7 Test Driver
C7TU CCS7 Test Utilities
C7UP CCS7 ISUP
CA Cable
CA Cache Alignment
CA Call Accepted
CA Call Announcer
CA Call Appearance
CA Call Attempt
CA Capability
CA Carrier Agent
CA Cell Allocation
CA Central Agent
CA Certification Authority
CA Certifying Authority
CA Circuit Assigned
CA Cluster Alpha Tested
CA Collision Avoidance
CA Communication Adapter
CA Community Address
CA Competitive Analysis
CA Component Architect
CA Computer Animation
CA Computer-Aided
CA Conditional Access
CA Connection Agent
CA Conseil d'Administration
CA Content Alignment
CA Control Agent
CA Customer Access
CA Customer Administration
ca Internet country code for Canada
CA ISO country code for Canada
CA U.S. postal code for California
CAA Civil Aviation Authority
CAAC Customer Administration of Authorization Codes
CAAFRL Customer Administration of Alternate Facility Restriction Levels
CAAR Cache Address Register
CAB Cabinet
CAB Cabinet file
CAB Customer Advisory Board
CABOP Call Management System Automatic Recall Blocking to Private Numbers
CABS Carrier Access Billing System
CAC Call Accept
CAC Call Admission Control
CAC Carrier Access Code
CAC Centralized Arbitration Control
CAC Commercial Action Committee (CEPT)
CAC Connection Admission Control
CAC Customer Access Connection
CACE Carrier Access Code Error Treatment
CACH Call Appearance Call Handling
CACI Communication Automation and Control, Inc.
CACM Communications of the ACM (periodical)
CACP Central Arbitration Control Point
CACR Cache Control Register
CACRL CAs CRL
CACS Centralized Alarm and Control System
CAD Call Acceptance Delay
CAD Call Authorised by Dispatcher (TETRA)
CAD Card Accepting Device
CAD Computer-Assisted (aided) Design
CAD Computer-Assisted Dialing
CAD Connected-Address Display
CAD/CAM Computer-Aided Design and Manufacture
CADA Compact Asynchronous Data Adapter
CADAM Computer Augmented Design and Manufacturing
CADCAM Computer-Aided Design and Computer-Aided Manufacture
CADCS Call Attempt Data Collection Services
CADCS Call Attempt Data Collection System
CADD Computer Aided Design and Drafting
CADD Computer Aided Detector Design
CADDIA Cooperation in Automation of Data and Documentation for Imports/exports and management and Financial control of Agricultural markets
CADE Computer Aided Document Engineering
CADES Computer Aided DMS Engineering System
CaDivI Call Diversion Information
CADM Content-Addressable Data Manager
CADMAT Computer-Aided Design, Manufacture and Testing
CADN Cellular Access Digital Network
CADN Circuit Administration
CADSIM Continuous And Discrete Simulation
CAE Change Application Engineering
CAE Common Application Environment (X/Open)
CAE Communications Applications Environment
CAE Computer-Aided Engineering
CAE Customer Application Engineering
CAESS Customer Application Engineering Support System
CAF Common Application Framework
CAF Content Application Form
CAF Corel Application Framework
CAFD Comptroller's Automatic Message Accounting Format Description
CAFIS Credit and Financial Information System
CAG Call Agent
CaHI Call History Information
CAI Carrier Access Information
CAI Charge Advice Information
CAI Common Air Interface
CAI Computer Aided Instruction
CAI MDII: Address Incomplete Signal Received
CAIN Collected Address Information Number
CAIP Computer Aids to Industrial Productivity
CAKE Commercial Automated Key Escrow
CAL Calendar file
CAL Computer Aided Learning
CAL Customer Access Link
CALA Caribbean and Latin America
CALC Customer Access Line Charge
CALEA Communications Assistance for Law Enforcement Act
CALL PROC Call Proceeding message
CALLBL Call Block
CallL Call Leg
CallP Call Processing
CALM Central Alarm Monitoring
CALM Centralized Alarm
CALM Common Assembly Language for Microprocessors
CALMS Credit and Load Management System
CALP Called Line Identification Presentation
CALRS Centralized Automatic Loop Reporting System
CALS Computer aided Acquisition and Logistic Support (United States Military)
CALS Computer aided Acquisition, Logistics and Support (DoD program)
CALS Continuous Acquisition and Lifecycle Support
CALS Continuous Acquisition and Lifecycle System
CAM Call Accepted Message
CAM Call and Agent Manager
CAM Cell Arrival Monitoring
CAM Channel Adapter Manager
CAM Common Access Method
CAM Common Analysis Model
CAM Communication Access Method
CAM Communications Application Module
CAM Computer Aided Mapping
CAM Computer-Aided Manufacturing
CAM Connections Access Manager
CAM Content Addressable Memory
CAM Controlled Attachment Module
CAM Customer Access Module
CAM1 Communications Application Module, Type 1
CAM2 Communications Application Module, Type 2
CAMA Centralized Automatic Message Accounting
CAMAC Computer Application to Measurement And Control
CAMA-C Centralized Automatic Message Accounting-Computerized
CAMA-ONI Centralized Automatic Message Accounting-Operator Number Identification
CAMC Customer Access Maintenance Centre
CAMEL Customized Applications for Mobile networks Enhanced Logic (GSM term)
CAMENG Computer Aided Manufacturing Engineering
CAMF Customer Access Management Function
CAMMS Centralized Access Maintenance and Monitoring System
CAMS Central Administration and Maintenance Subsystem
CAN Campus-Area Network
CAN Cancel
CAN Cancel Abbreviated Number Delivery
CAN Central Administration for NDAF
CAN Controller Area Network (Automotive Electrics, R. Bosch GmbH)
CANBER Canada-Bermuda submarine cable
CANC Cancel
CANF Cancel From
CanF Cancel From
CANT Cancel To
CanT Cancel To
CANTRAN Cancel Transmission
CANTS Customer Access Network Transmission Standards
CANTV Compania Anonima Nacional Telefonos de Venezuela
CAP Call Appearance
CAP CAMEL Application Part
CAP Capability
CAP Capacitor
CAP Carrierless AM/PM
CAP Carrierless Amplitude and Phase
CAP Carrierless Amplitude Modulation/Phase Modulation
CAP Carrierless Amplitude/Phase
CAP Carrierless Amplitude/Phase Modulation
CAP Cell Arrival Pattern
CAP Cellular Access Processor
CAP Cellular Application Processor
CAP Central Answering Position
CAP Central Arbitration Point
CAP Change Application Procedure
CAP Circuit Access Point
CAP Common Application Platform
CAP Communication of Act Parameters
CAP Competitive Access Provider
CAP Computer Aided Publishing
CAP Conformance Assessment Process
CAPAC Cable Packet Communications
CAPAM Call Appearance for Analog Member of EKTS
CAPC Congestion Avoidance with Proportional Control
CAPG Control of Application Process Group
CAPI Call Appearance Identifier
CAPI Common API for ISDN
CAPI Common Application Programming Interface
CAPI Common ISDN API
CAPNET Captive Network
CAPP Computer Aided Process Planning
CAPS Call Appearance Sequence
CAPS Call Attempts Per Second
CAPT Call Appearance Terminal
CAPTAIN Character And Pattern Telephone Access Information Network
CAQ Computer Aided Quality control
CAR Cal Request
CAR Call Request
CAR Carrier
CAR Carry
CAR Cartoon Network
CAR Channel Assignment Record
CAR Communication of Act Relationship
CAR Computer Access Restriction
CAR Computer Aided Radiology
CAR Computer Aided Retrieval
CAR Connection Address Resolution
CAR Corrective Action Request
CARAM Content Addressable Random Access Memory
CARB Channel Assignment with Borrowing and Reassignment
CaRe Call Reference
CARE Customer Account Record Exchange
CARE/ISI Customer Account Record Exchange/Industry Support Interface
CARES EKTS Call Appearance Reservation
CARIN Center for Applied Research on Information Networking
CAROT Centralized Automatic Reporting On Trunks
CARP Cache Array Routing Protocol
CARPAC Carrier Pretest and Cutover
CARRET CARriage Return
CARS Cable Television Relay Station
CARS Communication Analysis Reporting System
CARS Community Antenna Relay Service
CARS Computerized AMA Recording System
CARTS Carrier Accounting Records Transport System
CARTS Circuit Assignment Record Transfer System
CAS Call Accounting System
CAS Call Associated Signaling
CAS Call Attendant Services
CAS Centralized Attendant Service
CAS Channel Associated Signaling
CAS Column Address Select
CAS Column Address Strobe
CAS Communications Application Specification (DCA-INTEL eq to Net BIOS or LANManager)
CAS Component Administration System
CAS Computer Aided Systems
CAS Computer-Assisted Signaling
CAS Conseil de la Audiovisuel Superieur
CAS Content Addressable Storage
CAS Control Automation System
CAS CPE Alerting Signal
CAS CPS Architecture Summary
CAS Craft Administration System
CAS Customer Access Systems
CAS Customer Account Services
CAS IBM Centre for Advanced Studies
CASA Connection Arrangement for Switched Access
CASCO ISO council Committee on COnformity ASsessment
CASD Computer Aided System Design
CASE Common Application Service Element
CASE Computer-Aided Software Engineering
CASE Computer-Assisted Software Engineering
CASE Computing and Systems Evolution
CASL Crosstalk Application Scripting Language
CASOP CMS AR Screening Of Private Calls
CAST Carlisle Adams-Stafford Tavares
CAST Computerized Automatic System Tester
CASVE Computer Aided Software Verification Environment
CAT Catalog File
CAT Centrex Access Treatment
CAT Clear Air Turbulence
CAT Comite des Activites Techniques (CEPT)
CAT Common Authentication Technology
CAT Component Assembly Tool
CAT Computer Aided Testing
CAT Computer Aided Tomography
CAT Computer Aided Translation
CAT Computer Aided Typesetting
CAT Computer-Aided Transcription
CAT Computerized Axial Tomography
CAT Council for Automation Tools
CAT Customer Access Treatment
CATA Canadiabn Advanced Technology Association
CATCR Customer Access Treatment Code Restriction(s)
CATFOP CMTS AMA Tape Formatted Output Program
CATG Computer Aided Test Generation
CATLAS Centralized Automatic Trouble Locating and Analysis System
CATNIP Common Architecture for the Internet Protocol
CATRP China Academy of Telecommunications Research and Planning
CATS Calling Card and Third Party Number Settlement
CaTS Capacity Tracking System
CATS Cellular Air Traffic System
CATS Computer Aided Testing System
CATS Computer-Accessed Telemetry System
CATS Consortium for Audiographics Teleconferencing Standards
CATS Crossconnect And Transfer System
CATT Centralized Automatic Toll Ticketing
CATTS Centralized Automatic Trunk Test System
CATV Cable Television
CATV Community Antenna Television
CATV Community Antenna TV
CAU Cable Access Unit
CAU Cause
CAU CDMA Application Unit
CAU Cell Antenna Unit
CAU Control Arithmetic Unit
CAU Controlled Access Unit
CAU Customer Access Unit
CAV Card Access Valid
CAV Component Analog Video
CAV Constant Angular Velocity
CAVE Cellular Authentication and Voice Encryption
CAVE Computer Automatic Virtual Environment
CAVU Cellular Authentication and Voice Privacy Unit
CAW Certification Authority Workstation
CAW Channel Address Word
CAW Command Address Word
CAX Community Automatic Exchange
Cb Blue Chrominance
CB Call Barring
CB Call forwarding Busy
CB Carrier Band (modulation technique)
CB Cell Broadcast
CB Channel Bank
CB Chrominance colour difference, Blue
CB Circuit Breaker
CB Citizens Band
CB Citizen's Band (Radio)
CB Clear Back
CB Coin Box
CB Common Battery
CB Compatibility Bulletin
CB Connecting Block
CB Connection Broker
CB Control Block
cb Count of bytes
CB/TH Circuit Breaker- Thermal
CB1 Clear-Back No. 1 signal
CB2 Clear-Back No. 2 signal
CB3 Clear-Back No. 3 signal
CBA Changebank Acknowledgement message
C-band 4/6 GHz frequency range
CBA-RA Coin Box Accounting for Revenue Allocation
CBASIC Compiled-BASIC
CBBS Computerized Bulletin Board System
CBC Call By Call
CBC Canadian Broadcasting Corporation
CBC Can't Be Called
CBC Cell Broadcast Centre (GSM)
CBC Cell Bus Controller
CBC Channel Bus Controller
CBC Cipher Block Chaining
CBC Circuit Bearer Channel
CBC Connectionless Bearer Control
CBC Consecutive Blank Column
CB-CC Connection Broker-Connection Control
CBCH Cell Broadcast Channel
CBCH Common Control CHannel
CBCP Callback Control Protocol
CBCSS Call By Call Service Selection
CBD Call Box Discrimination
CBD Changeback Declaration message
CBDS Circuit Board Design System
CBDS Connectionless Broadband Data Service
CBDS Constant Bit Rate Data Service
CBDT Can't Break Dial Tone
CBE Call Forwarding Busy Internal Calls Only
CBE Centralized Branch Exchange
CBEd Computer-Based Education
CBEMA Computer and Business Equipment Manufacturers Association
CBG Census Block Group
CBH Can't Be Heard
CBI Call Forward Busy Intragroup
CBI Channel Bus Interface
CBIC Complimentary Bipolar Integrated Circuit
CBIC Control Bus Interface Chip
CBIOS Compatibility BIOS
CBIS Cincinnati Bell Information Systems
CBK Change Back
CBK Clear Back message
CBK Clear-Back signal
CBK Code Blocking
CBL Charge-Buffered Logic (Low-Power Bipolar Logic Family)
CBLU Citizens Band Licencing Unit
CBMI Cell Broadcast Message Identifier
CBMS Computer Based Message Service
CBMS Computer Based Message Switching
CBMS Computer-Based Message System
CBN Common Bonding Network
CBN Compromise Balance Network
CBO Continuous Bit-Stream Oriented
CBO Cooperative Business Object
CBP Coded Block Pattern
CBQ Call Back Queuing
CBQ Class Based Queuing
CBR Carrier and Bit timing clock Recovery
CBR Cavity-Backed Radiator
CBR Constant Bit Rate
CBR Continuous Bit Rate
CBR-AAL Constant Bit Rate ATM Adaptation Layer
CBS Card Buffer Storage
CBS Cell Broadcast Service
CBS Centralized Business Service
CBS Columbia Broadcasting System
CBS Committed Burst Size
CBS Common Battery Signaling
CBS Communal Base Station
CBS Communication Base Station
CBS Constant Bitrate Services
CBSC CDMA Base Station Controller
CBSW Common Board Software
CBsy C-Side Busy
C-BSY Core Side Busy
CBT Computer-Based Terminal
CBT Computer-Based Training
CBT Core-Based Tree(s)
CBT Cursor Backward Tab
CBTA Canadian Business Telecommunications Alliance
CBTA Canadian Business Telecommunications Association
CBU Call Forwarding Busy Unrestricted
CBUD Call Before U Dig
CBUS Control Bus
C-Bus Channel Transport Bus
C-Bus Channelized Bus
CBW Convert Byte to Word (80x86 inst)
CBWV Call Busy Work Volume
CBX Computer-Based Exchange
CBX Computer-Controlled Branch Exchange
CBX Computerized Branch Exchange (PBX)
CBX Computerized Private Branch Exchange
cc C Compiler
CC C++ Compiler/Translator
CC Cable Connector
CC Call Center
CC Call Code
CC Call Configuration
CC Call Connect
CC Call Connected
CC Call Connected packet
CC Call Control
CC Call Control Entity
CC Calling Card
CC CAM Controller
CC Capability Complete
cc Carbon Copy
CC Card Column
CC Card Count
CC Carrier Connect
CC Carrier Current
CC Central Control
CC Central Controller
CC Channel Control information element
CC Channel Controller
CC Chip Carrier
cc Cicero
CC Clear Channel
CC Close-Captioned
CC Cluster Controller
CC Code Complete
CC Coin Collect
CC Coin Completing
CC Collect Call
CC Color Code
CC Command Chaining
CC Common Carrier
CC Common Control
CC Common Controller
CC Communication Computer
CC Communication Control
CC Company Code
CC Composite Call
CC Composite Clock
CC Computer Center
CC Computing Center
CC Condition Code
CC Conference Calling
CC Congestion Control
CC Connection Confirm
CC Connection Control
CC Connection Coordinator
CC Continuity Cell
CC Control Channel
CC Control Component
CC Control Console
CC Convolutional Code
CC Coordinating Commitee
CC Coordination Center
CC Cost Component
CC Countdown Counter
CC Country Code
CC Cross Connection
CC Cross-Connect
CC Crystal Controlled
CC Cursor Control
CC Cyclic Check
CC ISO country code for Cocos (Keeling) Islands
CC/OR Coin Collect/Operator Released
CC1 Calling Card- Type 1
CC1 CAM Controller, Type 1
CC2 Calling Card- Type 2
CC2 CAM Controller, Type 2
CCA Call Classification Analysis
CCA Call Control Agent (typically a terminal equipment)
CCA Carrier Central Agent
CCA CENELEC Certification Agreement
CCA Circuit Card Assembly
CCA Clear Channel Assessment
CCA Communication Channel Adapter
CCA Conceptual Communication Area (OSI)
CCA Control Channel Acquisition
CCAF Call Control Agent Function
CCAF Call Control Agent Functional Entity
CCAF Cluster Control Agent Function
CCAF+ Call Control Agent Function Plus
CCAFr Call Control Agent Function (Radio)
CCAFR Customer Control of Automatic Flexible Routing
CCAN Calling Card Account Number
CCAN Credit Card Account Number
CCAP Communication Control Application Program
CCAS Call Control Application Services
CCB Call Condense Block
CCB Call Control Block
CCB Change Control Board
CCB Channel Command Block
CCB Channel Control Block
CCB Coin Collecting Box
CCB Command Control Block
CCB Common Carrier Bureau
ccb Communications Control Block
CCB Cyclic Check Byte
CCBQ Coordinated Call Back Queing
CCBS Call Completions to Busy Subscribers
CCBS Completion of Calls to Busy Subscriber (supplementary service)
CCBSi Completion of Calls to Busy Subscriber Call Indicator
CCC CDMA Cluster Controller
CCC Cenelec electronic Components Certification
CCC Central Control Complex
CCC Clear Channel Capability (T1 option to use full bandwidth with B8ZS coding)
CCC Coinless, Charge-a-Call
CCC Color Conversion Context
CCC Common Customer Code
CCC Communication Command and Control (communication control character)
CCC Corrective Content Complete
CCC Credit Card Calling
CCC Credit Card Control
CCC Custom Charge Calling
CCCD Conductively Connect Charge-coupled Device
CCCH Common Control Channel
CCCI Command, Control, Communication & Intelligence system (US Military)
CCCI Command, Control, Communications and Intelligence
CCCM Council Committee on Consumer Matters
CCCP Connection Control Protocol
CCD Central Control Disabled
CCD Charge-Coupled Device
CCD Class Communication Diagram
CCD Coin Collect Detect
CCDB Calling Card Database
CCDC Channel Compatible Digicipher
CCDN Corporate Consolidated Data Network
CCE Cannel Control Error
CCE Central Control Enabled
CCE Consistency Check End message
CCE Control Creation Edition
CCE Corporate Component Engineering
CCEA Consistency Check End Acknowledgement message
CCEL C++ Constraint Expression Language
CCEL Call Connection Elapsed Time Limitation
CCES Centrally Controlled Equaliser System
CCES Common Control Echo Suppressor
CCETT Centre Commun d'Etudes de Télédiffusion et de Télécommunications (France)
CCF Call Control Function
CCF Call Control Functional Entity
CCF Cluster Control Function
CCF Coin, Coin First
CCF Common Control Function
CCF Communications Control Field
CCF Complex Call Framework
CCF Conditional Call Forwarding
CCF Continuity Check Failure message
CCF Continuity-Failure signal
CCF Custom Calling Feature(s)
CCF+ Call Control Function Plus
CCFAC Customer Control of Facilities
CCFL Cold-Cathode Fluoresecent Lamp
CCFP Central Control Fixed Part
CCFP Common Control Fixed Part
CCFT Cold Cathode Fluorescent Tube
CCG Computer Communications Group
CCH Cancel Previous Character
CCH Comite Consultatif pour l'Harmonisation
CCH Common Control Channel
CCH Connections per Circuit per Hour
CCH Continuity Check Indicator
CCH Control Channel
CCH Coordination Committee on Harmonization
CCI Call Completion Internet
CCI CCITT and CCIR
CCI Common Client Interface
CCI Common Customer Identifier
CCI Computer Consoles Incorporated
CCI Concorde-to-Concorde Interface
CCI Conference Circuit Interconnection
CCI Continuity Check Incoming
CCIA Computer and Communication Industries Association
CCID Call Count- Information Delivered
CCIE Call Control Information Element
CCIF Call Control Interface
CCIF Comité Consultatif International Téléphonique
(International Telephone Consultative Committee)
CCIR Comité Consultatif International de Radiocommunications (now ITU-R)
CCIR Comite Consultatif International de Radiodiffusion
CCIR International Radio Consultative Committee (now ITU-R)
CCIR Internationaler Beratender Ausschub für das Funkwesen
CCIRN Coordinating Committee for International Research Networking
CCIS Common Channel Interoffice Signaling
CCIS6 Common Channel Interoffice Signaling System No. 6
CCIT International Telegraph Consultative Committee
CCITT Comité Consultatif International Télégraphique et Téléphonique
(International Consultative Committee for Telegraph and Telephone, now ITU-T)
CCIUG ClearCase International Users Group
CCKF Continuity ChecKtone Failure (SPADE)
CCKT Continuity Check Tone
CCL Calling Party Clear message
CCL Change Control Log
CCL Common Communication Link
CCL Comon Carrier Line
CCLC Carrier Common Line Charge
CCM Central Customer Manager
CCM Circuit Supervision Message
CCM Common Channel Signalling Module
CCM Common Control Module
CCM Communication Channel Management
CCM Complex Call Model
CCM Composite Call Model
CCM Connection Control Message
CCM Cross-Connect Multiplexor
CCM Current Call Meter
CCM Customer Configuration Management
CCM Customer Control and Management
CCM DMS-100 Common
CCMC Computer Communications Maintenance Center
CCMF Centralised Control and Monitoring Function
CCMIS Call Centre Management Information System
CCMP Call Completion
CCMP CC Message Processor
CCMP Credit Card Mobile Phone
CCN Calling Card Number
CCN Common Channel Network
CCN Contract Change Notice
CC-NDT Can't Call-No Dial Tone
CCNR Completion of Call No Reply (supplementary service)
CCNR Completion of Calls on No Reply
CC-NUMA Cache-Coherent NUMA
CCO Colorado Communications Operation
CCO Component Coordinator
CCO Continuity-Check Outgoing
CCODE Country Code
CCOFGQ Customer Control of Outgoing Facility Group Queuing
CCOM Coaxial Cable Organization Module
CCOV Code Coverage
CCP Calibrator Characteristic Parameter
CCP Capability/Configuration Parameter
CCP Character Control Protocol
CCP Communication Control Package
CCP Compression Control Protocol
CCP Connection Control Protocol
CCP Console Command Processor
CCP Content Check Point
CCP Credit Card Processor
CCPE Cabinetized Common Peripheral Equipment
CCPE Control Channel Protocol Entity
CCPU Call Count- Information Private/Unavailable
CCR Cable Control Room
CCR Call Charge Record
CCR Commitment, Concurrency, and Recovery
CCR Computer Controlled Retrieval
CCR Condition Code Register
CCR Consistency Check Request message
CCR Console Card Reader
CCR Continuity Check Request message
CCR Cumulative Charge Restriction
CCR Current Cell Rate
CCR Current Controlled Resistor
CCR Customer Controlled Reconfiguration
CCR Customer Controlled Routing
CCR Customized Code Restriction
CCRA Consistency Check Request Acknowledgement message
CCRA Continuity Check Request Acknowledgement message
CCR-PR Customized Call Routing with Private Network
CCR-PU Customized Call Routing with Public Network
CCRS Centrex Customer Rearrangement Service
CCRSE Commitment, Concurrency and Recovery Service Element
CCS 100 Call Seconds
CCS C Compilation System
CCS Calculus of Communicating Systems
CCS Calling Card Service
CCS Cent Call Seconds (36 CCS = 1 Erlang)
CCS Centi-Call Seconds
CCS Channel Change Status
CCS Chip Carrier Socket
CCS Common Channel Signaling
CCS Common Command Set
CCS Common Communications Subsystem
CCS Common Communications Support
CCS Common Control Style
CCS Connection Successful
CCS Continuous Color Sequence
CCS Continuous Composite Servo
CCS Cross Connect System
CCS Custom Calling Services
CCS Cutover Conversion Services
CCS#6 Common Channel Signaling System No. 6
CCS#7 Common Channel Signaling System No. 7
CCS/C Corporate Computer Systems C
CCS6 Common Channel Signaling System No. 6
CCS7 Common Channel Signaling System No. 7
CCSA Common Control Switching Arrangement
CCSA Common-Control-Switching Arrangement
CCSAN Calling Card Subaccount Number
CCSB Command Complete Status Block
CCSC Customer Changeable Speed Calling
CCSF Common Channel Signaling Failure
CCSL Compatible Current-Sinking Logic
CCSN Calling Card Service Node
CCSN Common Channel Signaling Network
CCSN Customer Contact Service Node
CCSNIS Common Channel Signaling Network Interface Specification
CCSS Common Chanel Signalling System
CCSSO Common Channel Signaling Switching Office
CCSUA Call Control Service User Application
CCT Call Classification Terminal
CCT Card Configuration Table
CCT Carrier Connect Time
CCT Carrier Current Transceiver
Cct Circuit
CCT Circuit
CCT CNMA Conformance Testing
CCT Complex Call Topology
CCT Computerized Communication Terminal
CCT Connection Type
CCT Consortium for Communication Testing (private)
CCT Consultative Committee on Telecommunications
CCT Continuity Check Transceiver
CCT Control Concentrator Terminal
CCT Cross Connect Type
CCTA Central Computer and Telecommunications Agency (UK)
CCTO Call Completion with Trunk Optimization
CCTS Comite de Coordination pour Telecommunications par Satellite (CEPT, obsolete)
CCTV Closed-Circuit Television
CCU Cable Control Unit
CCU Camera Control Unit
CCU Central Control Unit (FEP IBM)
CCU Communication Control Unit
CCU Controller Coax Unit
CCUG Canadian Centrex Users Group
CCUP Customer Communication Update Package
CCV Call Covering
CCV Calling Card Validation
CCV Charge Card Validation
CCV Credit Card Validation
CCW Cancel Call Waiting
CCW Channel Command Word
CCW Channel Control Word
CCW Counterclockwise
CCx CAM Controller, Type x
CCX Central Connection Control
CCX Central Connection Controller
CD Cache Disable
CD Call Deflection (supplementary service)
CD Call Disposition
CD Call Distribution
CD Call Distributor
cd candela
CD Card
CD Carrier Detect (signal)
CD Circle Digit
CD Circuit Description
CD Code Diversion
CD Code Division
CD Collision Detection
CD Command Data
CD Command Dictionary
CD Committee Document
CD Committee Draft (former DP)
CD Compact Disk
CD Component Description
CD Computer Design (periodical)
CD Count-Down
CD Critical Dimension
CD ROM Compact Disc Read-Only Memory
CD0 Clocked Data Zero
CD1 Clocked Data One
CDA Call Data Accumulator
CDA Call Deflection Alerting
CDA Call Delivery Activatable
CDA Call Disposition Analyzer
CDA Call Distribution to Attendant (supplementary service)
CDA Call Diversion to Announcement
CDA Call Duration Advice
CDA CD Audio Track file
CDA Coin Detection and Announcement
CDA Command and Data Acquisition
CDA Communications Decency Act
CDA Compound Document Architecture (DEC)
CDA Computer Drafting Aid system
CDA Customer Data Access
CD-A Audio Compact Disc
CDAA Call Deflection After Answer
CDAA Concurrent Data Access Architecture
CDAL Control and Diagnostic Access Link
CDAM Committee Draft Amendment
CDAR Customer Dialed Account Recording
CDB Call Data Block
CDB Call Diversion on Busy
CDB Channel Data Byte
CDB Class Descriptor Block
CDB Command Database
CDB Command Descriptor Block
CDB Common Data Base
CDB Communications Device Buffer
CDB Component Data Base
CDB Configuration Data Base
CDBM Call Data Block Manager
CDC Call Direct Code
CDC Call Directing Character
CDC Call Directing Code
CDC Central Distribution Center
CDC Certificate Distribution Center
CDC Characteristic Distortion Compensation
CDC Coin Detection Circuit
CDC Command Document Continue
CDC Conditioned Diphase Code
CDC Control Data Corporation
CDC Control Delay Channel
CDC Customer Data Change
CDCCP CDC Control Data Procedure (CDC)
CDCCP Control Data Communications Control Procedure
CDCL Code Calling
CDCL Command Document Capability List
CDCS Continuous Dynamic Channel Selection
CDD Client Device Driver
CD-DA Compact Disk-Digital Audio
CDDI Cable Distributed Data Interface
CDDI Copper Distributed Data Interface
CDDI FDDI-over-Copper
CDE Common Desktop Environment
CDE Customer Design Engineering
CDE Exclude Intragroup Calls from Call Forwarding
CD-E Compaft Disk-Erasable
CDET Charge Determination
CDF Call Diversion Fixed
CDF Carrier Distribution Frame
CDF Channel Definition Format
CDF Coin, Dial-Tone First
CDF Combined Distribution Frame
CDF Communications Data Field
CDF Context-Dependent File
CDF Cumulative Distribution Function
CDF Cutoff Decrease Factor
CDF Cyberspace Description Format
CDFI Cabinetized Direct Fiber Interface
CDFL Capacitive Diode Field-effect transistor Logic
CDFS CD-ROM File System
CDFS Compact Disk File System
CDG Call Delivery Global
CDG CDMA Development Group
CDG Corporate Design Group
CDH Cooperative Document Handling
CDI Call Detail Information
CDI Call Forward Do Not Answer Intragroup
CDI Called Line Identity
CDI Change Direction Indicator (SNA)
CDI Collector-Diffused Isolation
CDI Compact Disc Interactive
CDI Concentrating DASS2 Interface
CDI Conventional Defence Initiative
CDI Copper Distribution Interface
CDI Interactive Compact Disk
CD-I Compact Disk- Interactive
CD-I Interactive Compact Disc
CDIP Ceramic Dual In-line Package (IC)
CDIS Cable Data Instrumentation System
CDIV Call Diversion
CDK Control Development Kit
CDL Carrier Detect Level
CDL Comite De Lecture
CDL Component Description Language
CDL Computer Description/Design Language
CDL Customer Defined Location
CDLC Cellular Data Link Control
CDLI Called LATA Identity
CDLI Called Line Identity
CDLN Called Line Number
CDLN Cornerstone Distance Learning Network
CDM Class Data Manager
CDM Code Division Multiplexing
CDM Common Domain Model
CDM Companded Delta Modulation
CDM Conceptual Data Model
CDM Configuration Data Management
CDM Configuration Data Manager
CDM Consumer Digital Modem
CDM Curo Document Manager
CDM Customer Data Modification
CDMA Code Division Multiple Access (spread spectrum)
CDME Composite Downstream Mapping Element
CDMR Call Detail Maintenance Record
CDMS Cluster Data Management System
CDN Cable Data Network
CDN Call Processing Database Node
CDN Called Party Number
CDN Change Directory Number
CDN Control Directory Number
CDN Customer Defined Network
CDNA Call Diversion No Answer
CDNI Cabinetized Digital Network Interconnect
CDO Call Diversion to Operator
CDO Community Dial Office
CDO Connect Data Overflow
CDOC Customer Documentation
CDOS Customer Dialed Operator Service
CDOS Customer Dialed, Operator Serviced
CDP Cache Data Port
CDP Communications Data Processor
CDP Component Development Plan
CDP Coordinated Dialing Plan
CDP Custom Dialing Plan Trigger
CDP Customized Dialing Plan
CDP0 Cache Data Port Register 0
CDP1 Cache Data Port Register 1
CDP2 Cache Data Port Register 2
CDP3 Cache Data Port Register 3
CDPA Called Party Address
CDPB Command Document Page Boundary
CDPD Cellular Digital Packet Data
CDPN Called Party Number
CdPN Called Party Number
CdPNo Called Party Number
CDPR Card Pair
CDPR Customer Dial Pulse Receiver
CDPSAIT Called Party Subaddress Information Transfer
CDPSDBL1 Called Party Subaddress Delivery Billing Records (Intranetwork)
CDPSDBL1P Called Party Subaddress Delivery Billing Records (Intranetwork) for PRI
CDPSDBL2 Called Party Subaddress Delivery Billing Records (Internetwork)
CDPSDBL2P Called Party Subaddress Delivery Billing Records (Internetwork) for PRI
CdPSub Called Party Subaddress
CDQ Convert Doubleword to Quadword (80x86 inst)
CDR Call Detail Record
CDR Call Detail Recording
CDR Call Detail Reporting
CDR Common Data Rate
CDR Common Data Representation
CDR Connected Digit Recognition
CDR CorelDraw File
CDR Current Differential Relaying
CD-R Compact Disk-Recordable
CDRAM Cached DRAM
CDRC Call Detail Recording Call Entry
CDRE Call Detail Recording Extension Blocks
CDRM Cross-Domain Resource Manager
CDROM Compact Disk Read Only Memory
CD-ROM Compact Disc Read-Only Memory
CDRR Call Detail Recording and Reporting
CDRS Call Detail Recording Call Processing
CDRTOS Compact Disk Real Time Operating System
CD-RW Compact Disk-Rewritable
CdS Cadmium Sulfide
CDS Call Data Store
CDS Call Deflection Selection
CDS Call Diversion to Subscriber
CDS Called Party Subaddress
CDS Cell Directory Server
CDS Cell Directory Service
CDS Command Document Start
CDS Companion Diagnostic Software
CDS Current Directory Structure
CDSI Called State Identity
CDSIS Combined Discrete continuous SImulation System
CDSN Cabinetized Dual Shelf Network
CDST Called Party Station Type
CDT Call Data Transmitter
CDT Cambridge Display Technology
CDT Carrier Detect Threshold
CDT Carrier Dial Tone
CDT Center for Democracy and Technology
CDT Central Daylight Time
CDT Companion Deployment Tool
CDT Concrete Data Type
CDT Configuration Data Table
CDT Connectionless Data Transmission
CDT Control Data Terminal
CDT Credit
CDT Credit allocation (OSI-TL)
CDTE Cabinetized Digital Trunk Equipment
CDTV Conventional Definition Television
CD-TV Commodore Dynamic Total Vision
CDU Call Distribution Unit
CDU Call Forwarding Do Not Answer Unrestricted
CDU Central Display Unit
CDU Clock Distribution Unit
CDUR Chargeable Duration
CDV Call Deflection Variable
CDV Cell Delay Variation
CDV Compact Disk Video
CDV Constant Delay Value
CD-V Compact Disk-Video
CDVCC Coded Digital Verification Color Code
CDVM Call Diversion to Voice Mail
CDVT Cell Delay Variation Tolerance
CDW Call Delivery Wide
CD-WO Compact Disk Write-Once
CDX Compact Digital Exchange
CD-XA Compact Disc-Extended Architecture
CE Channel Element
CE Chip-Enable (signal)
CE Circuit Emulation
CE Collision Enforcement
CE Common Equipment
CE Communaute Europeenne (EC)
CE Compact Edition
CE Compute Engine
CE Conditioning Equipment
CE Congestion Encountered
CE Connectable Entity
CE Connection Element
CE Connection Endpoint
CE Conseil de l'Europe
CE Consumer Electronics
CE Control Element
CE Council of Europe
CE Customer Equipment
CE/PE Common Equipment/Peripheral Equipment
CE1 Compute Engine, Type 1
CE3 Control Equipment No. 3
CEA Canadian Electric Association
CEAC Commission Européenne de l'Aviation Civile
CEAC Committee for European Air-spaced Coordination
CEB Comite Electrotechnique Belge (B)
CEBS Circuit Emulation Bearer Service
CEBUS Consumer Electronics BUS
CEbus Consumer Electronics Bus
CEC Canadian Electrical Code
CEC Cell Error Check
CEC Commission des Communautés Européennes
CEC Commission of the European Communities (no longer exists, replaced by EC)
CEC Commission of the European Community
CECB Connection Endpoint Control Block
CECC Cenelec Electronic Components Committee/ies
CECUA Confederation of European Computer Users Association
CED CallEd station identification
CED Called Station Identifier
CED Capacitive Electronic Disk
CEDI Conditional End bracket inDIcator (SNA)
CEDL Compiled Encapsulator Description Language
CEE Call Extension Element
CEE Communauté Economique Européenne
CEE Conformity certification of Electrical Equipment
CEF Cable Entrance Facility
CEFIC Consiglio Europeo delle Federazioni delle Industrie Chimiche
CEG Cause Effect Graphing
CEG Continuous-Edge Graphics
CEI Call Establishment Information
CEI Comitato Elettrotecnico Italiano
CEI Comparably Efficient Interconnect
CEI Comparably Efficient Interconnection
CEI Connection Element Identifier
CEI Connection Endpoint Identifier
CEI Connection End-point Identifier (OSI)
CELL Cellular
CELLTREX Cellular Telephone Radio Exchange
CELP Code Excitation Linear Prediction
CELP Code Excited Linear Prediction
CELP Code-Excited Linear Predictive Coding
CELP+ Enhanced CELP
CE-LPC Code Excited Linear Predictive Coding
CELTIC Concentrateur Exploitant Les Temps d'Inactivite des Circuits
CEM Cellular Equipment Manager
CEM Centro Esercizio e Manutenzione (Italian switching operations system)
CEM Common Equipment Module
CEMA Canadian Electrical Manufacturers Association
CEMA Consumer Electronics Manufacturing Association
CEMEC Committee of European associations of Manufacturers of Electronic Components
CEMF Counter Electromotive Force
CEMT Conference Europeenne de Ministres des Transports
CEN Comité Européen de Normalisation
CEN Comité Européen pour la Normalisation
CEN European Committee for Standardization
CENCER CEN Certification
CENELEC Comité Européen de Normalisation Electrotechnique
CENELEC Comité Européen pour la Normalisation Electrotechnique
CENELEC European Committe for Electrotechnical Standardization
CENTAURE Centre d'Assistance aux Utilisateurs du Reseau (Cognitech)
CENTRACS Centrex Trouble Reporting Analysis Control System
CENTREX Centralized Exchange
Centrex Centralized Exchange
CEO Chief Executive Officer
CEO Chief Executive Officer (US)
CEO Comprehensive Electronic Office
CEP Cepstral Data
CEP Connection End Point
CEPR Common Employee Password Registry
CEPR Corporate Employee Password Registry
CEPR Corporate Employee Password Repository
CEPT Conférence Européenne des Administrations des Postes et des Télécommunications
(European Conference of Postal and Telecommunications Administrations)
CEPT Conference Européenne des Postes et Télécommunications
(European Conference of Postal and Telecommunications)
CEQ Customer Equipment
CER Call Event Record
CER Call Event Recording
CER Canonical Encoding Rules
CER Cell Error Ratio
CER Character Error Ratio
CERD Comite Europeen pour la Recherche et la Developement
CERDIP Ceramic Dual In-line Package
CERF California Education and Research Foundation
CERN Centre Européen de Recherche Nucleaire
CERN Centre Européen pour la Recherche Nucleaire
CERN Conseil Europeen pour la Recherche Nucleaire
cerr C++ Error Output Stream
CERT Computer Emergency Response Team
CERTICO ISO Council Committee on CERTification
CERTS COS On-Line Error Reporting and Tracking System
CES Captive Engineering Services
CES Carrier Entity Set
CES Circuit Emulated Services
CES Circuit Emulation Service
CES Coast Earth Station
CES Comite Electrotechnique Suisse
CES Connection Endpoint Suffix
CES Consumer Electronics Show
CESA Canadian Engineering Standards Association
CESAC CCIS Electronic Switching Systems Assistance Center
CESD Composite External Symbol Dictionary
CESE Capability Exchange Signalling Entity
CESG Communication and Electronic Security Group (UK)
CESI China Electronics Standardization Institute
CESID Caller's Emergency Service Identification
CES-IS Circuit Emulation Service Interoperability Specification
CESS Coax Elimination and Switching System
CETBDN Continue Existing Treatment Returned to Base DN
CEU Common Equipment Unit
CEU Continuing Education Unit
CEU DMS-100 Europe
CEV Controlled Environment Vault
CEx Compute Engine, Type x
CEXT Cabinetized Extension Module
CF Call Forwarding (supplementary service)
CF Carry Flag
CF Clipboard Format
CF Coin First
CF CompactFlash
CF Compact-Flash
CF Content Freeze
CF Contention-Free
CF Control Function
CF Convergence Function
CF Conversion Facility
CF Coordination Function
CF Crest Factor
Cf feeding Capacitor
CF Higher layer signalling channel (fast)
CF ISO country code for Central African Republic
CF2BECC Call Forwarding Busy 2, Establish Courtesy Call
CF3P 3-Port Conference Circuit
CFA Call Forward Allowed
CFA Capital Funds Appropriation
CFA Carrier Facility Assignment
CFA Carrier Failure Alarm
CFA-BC Concurrent Features Activation with Bi-Control
CFAC Call Forward All Calls
CFAC Call Forwarding Access Code
CFAR Constant False Alarm Rate
CFB Call Forward Busy
CFB Call Forwarding Busy (supplementary service)
CFB Cipher Feedback
CFB2ACC Call Forwarding Busy Line 2 Access Code
CFB2MFL Call Forwarding Busy 2, Multiple Forwarding Limit
CFB2RCR Call Forwarding Busy 2 Remote Code Restriction
CFB2RING Call Forwarding Busy 2, Reminder Notification Suppression
CFB2RNP Call Forwarding Busy Line 2, Redirecting Party Number Presentation
CFBACC Call Forwarding Busy Line Access Code
CFBCAC Call Forwarding Busy Customer Activation Control
CFBCC CFBL Customer Controlled
CFBECC Call Forwarding Busy, Establish Courtesy Call
CFBG Call Forward Busy Group
CFBGT Call Forward Busy Group Treatment
CFBILB Call Forwarding Busy Inhibit Line Busy
CFBIMB Call Forwarding Busy Inhibit Make Busy
CFBL Call Forward Busy Line
CFBL Call Forwarding Busy Line
CF-BL Call Forwarding- Busy Line
CFBL2 Call Forwarding Busy Line 2
CFBL2RC CFBL2 Restricted Control
CFBLILB Call Forwarding Busy Line-Inhibit Line Busy
CFBLIMB Call Forwarding Busy Line-Inhibit Make Busy
CFBLIO Call Forwarding Busy Line-Incoming Only
CFBLRC CFBL Restricted Control
CFBLRCAM CFBL Restricted Control for Analog Member of EKTS
CFBMBT Call Forwarding Busy Make Busy Treatment
CFBMFL Call Forwarding Busy Multiple Forwarding Limit
CFBRCR Call Forwarding Busy Remote Code Restriction
CFBRING Call Forwarding Busy Reminder Notification Suppression
CFBRMB Call Forwarding Busy Remote Make Busy
CFBRNP Call Forwarding Busy Line, Redirecting Party Number Presentation
CFC Call Forwarding Cancellation
CFC Chlorofluorocarbon
CFC Coin and Fee Check
CFC Coin and Fee Check message
CFC Conditional Call Forward
CFCW Call Forwarding of Call Waiting
CFD Call for Discussion
CFD Call Forward Denied
CFD Call Forward Don't Answer
CFD Call Forward No Answer
CFD Call Forwarding Do Not Answer
CFD Coin Free Dialing
CFD Computational Fluid Dynamics
CFD Connection Format Descriptor
CFD2ACC Call Forwarding Don't Answer 2, Access Code
CFD2ECC Call Forwarding Don't Answer 2, Establish Courtesy Call
CFD2MFL Call Forwarding Don't Answer 2, Multiple Forwarding Limit
CFD2RCR Call Forwarding Don't Answer 2, Remote Code Restriction
CFD2RING Call Forwarding Don't Answer 2, Reminder Notification Suppression
CFD2RNP Call Forwarding Don't Answer 2, Redirecting Party Number Presentation
CFDA Call Forward Don't Answer
CFDA Call Forwarding Don't Answer
CF-DA Call Forwarding- Don't Answer
CFDA2 Call Forwarding Don't Answer 2
CFDA2RC CFDA2 Restricted Control
CFDACC Call Forwarding Don't Answer Access Code
CFDAIO Call Forwarding-Don't Answer-Incoming Only
CFDAMA Combined Free/Demand Assignment Multiple Access
CFDARC CFDA Restricted Control
CFDARCAM CFDA Restricted Control for Analog Member of EKTS
CFDCAC Call Forwarding Don't Answer, Customer Activation Control
CFDCC Call Forwarding Don't Answer, Customer Controlled
CFDECC Call Forwarding Don't Answer, Establish Courtesy Call
CFDM Compounded Frequency Division Multiplex
CFDMFL Call Forwarding Don't Answer, Multiple Forwarding Limit
CFDRCR Call Forwarding Don't Answer, Remote Code Restriction
CFDRING Call Forwarding Don't Answer, Reminder Notification Suppression
CFDRNP Call Forwarding Don't Answer, Redirecting Party Number Presentation
CFDVT Call Forward Don't Answer Variable Timer
CFF Call Forward- Forwarding Party COS
CFF Call Forward, Fixed
CFF Call Forwarding Fixed
CFFP Call Forward Fraud Prevention
CFG Linker Configuration File
CFGB Configuration Control Block
CFGD Call Forward Group Don't Answer
CFGDA Call Forward Group, Don't Answer
CFGDA Call Forwarding Group, Don't Answer
CFGO Call Forwarding Group Only
CFGOI Call Forwarding Variable Group Only, Intra-Group Destination
CFI CAD Framework Initiative
CFI Call Failure Indication
CFI Call Forward Intragroup
CFI Call Forwarding Intragroup
CFI Channel Frame Interface
CFI Connection Failure Information
CFI Cross-Function Index
CFIA Component Failure Impact Analysis
CFIB Call Forwarding Interface Busy
CFIG Call Forwarding Intragroup
CFINT Call Forwarding Interval
CFIO Call Forwarding-Incoming Only
CFIOIG Call Forwarding Incoming Only, Intra Group Destination
CFIOO Call Forwarding Variable Incoming Only, Outside Group
CFK Call Forward Universal per Key
CFL Call Failure message
CFL Call Failure signal
CFL Carrier Fail
CFL Carrier Failure
CFL Communications Framework Library
CFLLR Call Forward Late-Late Release
CFLR Call Forward Late Release
CFM Code Fragment Manager
CFM Companding and Frequency Modulation
CFM Compounded Frequency Modulation
CFM Configuration Management
CFM Cubic Feet per Minute
CFMDN Call Forward MADN
CFML Cold Fusion Markup Language
CFN Call Forward- No Answer
CFN Call Forward Number
CFN Confusion message
CFNA Call Forward No Answer
CFNA Call Forwarding No Answer
CFNA-LR Call Forward No Answer-Late Release
CFNB Remote Directory Number for CFBL
CFNB2 Remote Directory Number for CFBL2
CFND Remote Directory Number for CFDA
CFND2 Remote Directory Number for CFDA2
CFNF Call Forwarding Not Found
CFNR Call Forwarding No Reply (supplementary service)
CFNRc Call Forwarding Not Reachable
CFNRy Call Forwarding No Reply
CFNRy Call Forwarding On No Reply
CFNV Remote Directory Number for CFV
CFO Call Forward- Originating Party COS
CFO Call Forwarding Outside
CFO Chief Financial Officer
CFO Contextual Feature Operator
CFO MDII: Open Trunk, After Start of Pulsing
CFP Call for Papers
CFP Call Forward Programming
CFP Channel Frame Processor
CFP Contention-Free Period
CFP Cordless Fixed Part
CFPE Call Forward Prevention Enhancements
CFPF Call Forwarding over Private Facilities
CFR Code of Federal Regulations
CFR ConFirmation to Receive
CFR MDII: Continuity Failure
CFRA Call Forward Remote Access
CFRA Call Forward Remote Activation
CFRA Call Forwarding- Remote Access
CFRES Call Forwarding Restrictions
CFS Call For Service signal
CFS Call Forward Simultaneous/Screening
CFS Call Forward Station
CFS Common Functional Specifications
CFS Conference Sizes
CFS Cross-Function Selector
CFS Cryptographic File System
CFS12 Conference Size 12
CFS12D Conference Size 12 With Drop
CFS18 Conference Size 18
CFS18D Conference Size 18 With Drop
CFS24 Conference Size 24
CFS24D Conference Size 24 With Drop
CFS3 Conference Size 3
CFS30 Conference Size 30
CFS30D Conference Size 30 With Drop
CFS3D Conference Size 3 With Drop
CFS6 Conference Size 6
CFS6D Conference Size 6 With Drop
CFSAM Conference Size for Analog Member of EKTS
CFSR Complete Feedback Shift Register
CFSR0 Channel Function Select Register 0
CFSR1 Channel Function Select Register 1
CFSR2 Channel Function Select Register 2
CFSR3 Channel Function Select Register 3
CFT Cold Fluorescent Tube
CFT Confirmation Tone
CFU Call Forward Universal
CFU Call Forwarding Unconditional (supplementary service)
CFU Call Forwarding Unconditional to a service center (supplementary service)
CFU Call Forwarding Universal
CFUB Call Forwarding on User Busy
CFUSD Call Forwarding Usage Sensitive Denial
CFUSP Call Forwarding Usage Sensitive Pricing
CFV Call For Votes
CFV Call Forward Validation
CFV Call Forwarding Variable
CFV2 Call Forwarding Variable 2
CFV2ACC Call Forwarding Variable 2, Access Code
CFV2ECC Call Forwarding Variable 2, Establish Courtesy Call
CFV2MFL Call Forwarding Variable 2, Multiple Forwarding Limit
CFV2RC CFV2 Restricted Control
CFV2RCR Call Forwarding Variable 2, Remote Code Restriction
CFV2RING Call Forwarding Variable 2, Reminder Notification Suppression
CFV2RNP Call Forwarding Variable 2, Redirecting Party Number Presentation
CFVAC Call Forwarding Variable, Active/Inactive Status
CFVACC Call Forwarding Variable, Access Code
CFVECC Call Forwarding Variable, Establish Courtesy Call
CFVMFL Call Forwarding Variable, Multiple Forwarding Limit
CFVRC CFV Restricted Control
CFVRCAM CFV Restricted Control for Analog Member of EKTS
CFVRCR Call Forwarding Variable, Remote Code Restriction
CFVRING Call Forwarding Variable, Reminder Notification Suppression
CFVRNP Call Forwarding Variable, Redirecting Party Number Presentation
CFVUS Call Forwarding Variable, Usage Sensitive
CFW Call Forward
CFW Call Forwarding
CFWC Call Forwarding, Cancel
CFWP Call Forwarding, Programming
CFWUSP Call Forward Usage Sensitive Pricing
CFWVAL Call Forward Validation
CFX Call Forwarding (Universal/Busy/Don't Answer)
CG Center of Gravity
CG Character Generator
CG Coast Guard
CG CodeGuard
CG Command Generator
CG Computer Generated
CG Computer Graphic
CG Connection Graph
CG Customer Group
CG ISO country code for People's Republic of the Congo
CGA Carrier Group Alarm
CGA Color Graphics Adapter
CGAP Call Gapping
CGB Circuit Group Blocking message
CGBA Circuit Group Blocking Acknowledgement message
CGC Circuit Group Congestion message
CGC Circuit Group Congestion signal
CGC Congestion Control
CGE Common Graphics Environment
CGE Compagnie Generale d'Electricite
CGH Chung, Graham, and Hwang
CGI Cell Global Identification
CGI Common Gateway Interface
CGI Computer Generated Imagery
CGI Computer Generations Inc.
CGI Computer Graphics Interface (former VDI, proposed standard protocol for GKS presentation)
CGLI Calling LATA Identity
CGLI CallinG Line Identification (functional entity)
CGLN Calling Line Number
CGM Circuit Group Supervision Message
CGM Computer Graphics Metafile (GKS image storage and transmission)
CGM Console Graphics Module
CGMAP CGM Application Profile (CGM)
CGMGDD CGM Generator Device Driver (CGM)
CGMIDD CGM Device Driver (CGM)
CGMIF CGM Interchange Format (CGM)
CGMP Cisco Group Management Protocol
CGN Calling Party Number
CGP Call Global Procedure
CGP Channel Group Processor
CGPA Calling Party Address
CgPC Calling Party Category
CGPN Calling Party Number
CGPN-NP Calling Party Number-Network Provided
CgPNo Calling Party Number
CGPSAIT Calling Party Subaddress Information Transfer
CGPSD Calling Party Subaddress Delivery
CGPSDBL1 Calling Party Subaddress Delivery and Redirecting Subaddress
Delivery Billing Records (Intranetwork)
CGPSDBL1P Calling Party Subaddress Delivery and Redirecting Subaddress
Delivery Billing Records (Intranetwork) for PRI
CGPSDBL2 Calling Party Subaddress Delivery and Redirecting Subaddress
Delivery Billing Records (Internetwork)
CGPSDBL2P Calling Party Subaddress Delivery and Redirecting Subaddress
Delivery Billing Records (Internetwork) for PRI
CGRP Circuit Group
CGRR Circuit Group Reset Reception
CGRS Circuit Group Reset Sending
CGS Calling Party Subaddress
CGS Centimetre,Gram,Second (system of measurement)
CGS Continuous-Grain Silicon
CGSA Cellular Geographic Service Area
CGSB Canadian General Standards Board
CGSET Circuit Group Set
CGSI Calling State Identity
CGSMTi Circuit Group Supervision Message Type Indicator
CGU Circuit Group Unblocking message
CGUA Circuit Group Unblocking Acknowledgement message
CG-VDI Computer Graphics Virtual Device Interface
CGW Cellular Gateway
CGW Computer Graphics World (periodical)
CH Call History
CH Call Hold
CH Can't Hear
CH Cell Header
CH Channel
CH CHaracter
CH Connection Handle
CH Consultation Hold
CH Count Register High Half
ch Internet country code for Switzerland
CH ISO country code for Swiss Confederation (Switzerland)
CHA Call Hold with Announcement
CHA Change
CHA Cursor Horizontal Absolute
CHAN Channel
CHAN CHAnnel Number
CHAN Channel Number Register
CHAP Challenge-Handshake Authentication Protocol
CHAP Challenge-Handshake Authorization Protocol
CHAPH Change Packet Handler Parameters
CHAR Character Information Element
CHAS CHip Assembler
CHB Call Handler Block
CHB Call Header Block
CHB Class Hierarchy Browser
CHD Call Hold
CHDAM Call Hold for Analog Member of EKTS
CHDB Compatible High Density Bipolar
CHDBR Call Hold B-Channel Reservation
CHDBR Call Hold Release B-Channel Reservation
CHDBREL Call Hold B-Channel Reservation Release
CHDN Call Hold Notification to Held Party
CHDN Change Hunt Directory Number
CHF Change Feature Information
CHF Swiss Franc(s)
CHG Change
CHG Change Translation/Routing Information
CHG Charge
CHG Charge message
CHG Charge Number
CHG Charging
CHG Charging Information message
CHG Charging message
CHG Class Hierarchy Graph
CHGE Charging Extended message
CHGEA Charging Extended Acknowledgement message
CHGI Charging Information
ChgPID Charged Party Information
CHI Computer-Human Interaction
CHI Computer-Human Interface(s)
CHILL ITU-T High Level Language
CHINT Charge Injection Transistor
ChIP Chunk Integration Point
CHIP Constraint Handling in Prolog
CHIPS Call History Information Process System
CHL Change List
CHM Changeover and Changeback messages
ChM Channel Manager
CHM CHannel Marker bit pattern
CHMF CHannel Marker bit pattern sent by cordless Fixed part
CHMOS High-Performance CMOS
CHMP CHannel Marker bit Pattern sent by CPP
CHN Change
CHN Charge Number
CHNBR Charge Number
CHNL Channel
CHNLTYP Channel Type
CHP Charging Point
CHPS CHaracters Per Second
CHRP Common Hardware Reference Platform
CHS Cylinder Head Selector
CHS Cylinder, Head, and Sector
CHST Charged Party Station Type
CHT Call History Table
CHT Call Hold and Trace
CHT Call Holding Time
CHT Charging Treatment For Origination
CHT Cursor Horizontal Tab
CHU CHannel Unit
CHV Card Holder Verification
CI Cache Inhibit
CI Call Identities
CI Capability Indicator
CI Carrier Interconnect
CI Cell Identity
CI Cell Insertion
CI Chain Index
CI Changeover Indicator
CI Circular Hunt
CI Code Inspections
CI Command Identifier
CI Command Increment
CI Command Interface
CI Command Interpreter
CI Common Interface
CI Competitive Intelligence
CI Complete Indicator
CI Component Interface
CI Components Integration
CI Congestion Indication
CI Congestion Indicator
CI Connection Identifier
CI Continuity Indicator(s)
CI Continuity Information
CI Continuous Improvement
CI Control In
CI Control Interface
CI Creation Initiation
CI Critical Indicator
CI CUG Index
CI Customer Information
CI Customer Input
CI Customer Installation
CI Customer Interface
CI ISO country code for Republic of the Ivory Coast
CI II Computer Inquiry II
CIA Central Intelligence Agency
CIA Channel Interface Adapter
CIA Computer Installation Assistance
CIA Current Instruction Address
CIAC Computer Incident Advisory Capability
CIB Card Information Base
CIB Centralized Intercept Bureau
CIB Change Implementation Board
CIB Class Information Block
CIB CRC32 Identification Bit
CIBER Cellular Inter-carrier Billing Exchange Record
CIC Carrier Identification Code
CIC Classification Information Center
CIC Codec Identity Code
CIC Common Interface Circuit
CIC Contention for Incoming Calls
CIC Customer Information Center (AT&T)
CIC Customer Initiated Call
CICA Chengdu Institute of Computer Application (China)
CICATS Computer Industry Coalition for Advanced Television Service
CICP Change Intercept
CICR Cancel In-Chain Return
CICS Compact Integrated Communications System
CICS Customer Information Control System (IBM)
CID Call Instance Data
CID Caller Identification
CID Calling Address Identification
CID Calling Address Identifier
CID Channel Identification
CID Channel Identifier
CID Character Identification
CID Charge Injection Device (= optoelectronic sensor)
CID Communication Identifier
CID Communications ID
CID Conference Identifier
CID Configuration, Installation, and Distribution
CID Connection Identification
CID Content Identifier
CID Craft Interface Device
CID Customer ID
CID Customer Identifier
CID Customer Information Development
CID Customer Interactive Dialing
CIDB Corporate Images Database
CIDC Cabinetized International Digital Controller
CIDCW Caller ID with Call Waiting
CIDCW Caller Identification on Call Waiting
CIDCW Calling Identity Delivery On Call Waiting
CIDFP Call Instance Data Field Pointer
CIDN Customer International Data Number
CIDR Classless Interdomain Routing
CIDS Calling Identification Delivery and Suppression
CIDS Calling Identity Delivery and Suppression
CIDSACC Calling Identity Delivery and Suppression Access Codes
CIDSBL CIDS Billing Records
CIDSDLV Calling Identity Delivery
CIDSSUP Calling Identity Suppression
CIDST(1) Comite de l'Information et de la Documentation Scientifique et Technique
CIE Commission Internationale de L'Eclairage
CIE Commission Internationale L'Eclairage
CIE Committee Internationale de l'Eclairage
CIEC Citizens Internet Empowerment Coalition
CIEE Chinese Institute of Electrical Engineers
CIER Channel Interrupt Enable Register
CIF Caltech Interchange Format (CAE/CAD Systems)
CIF Caltech Intermediate Form
CIF Cells In Flight
CIF Cells in Frames
CIF Common Image Format
CIF Common Interchange Format
CIF Common Intermediate Format (Video)
CIF Controlled Interflow
CIFE Council of European Industrial FEderations
CIFF Camera Image File Format
CIFS Common Internet File System
CIG Calling subscriber Identification
CIG Cell Interconnection Gateway
CIG Cellular Infrastructure Group
CIGREF Club Informatique des Grandes Enterprises Francais
CIH Class Inheritance Hierarchy
CII Call Identity Index
CII Code for Information Interchange (FIPS)
CII Common Interoffice Interface
CII Continuing Industry Interaction
CII MDII: Initial Address Message Signaling Irregularity
CIID Card Issuer Identification Code
CIID Card Issuer Identifier
CIIL Control Intermediate Interface Language
CIL Call Information Locator
CIL Call Instruction List
CIL Communication Identification Line
CIL Compatible Issue Lineup
CIL Component Integration Laboratories
CILS CPE Industry Liaison Subcommittee
CIM Common Information Model
CIM Compaq, Intel, and Microsoft
CIM CompuServe Information Manager
CIM Computer Integrated Manufacturing
CIM Corporate Information Model
CIM Cryptographic Information Management
CIM Curo Image Manager
CIM Customer Information Management
CIMAP Circuit Identification Maintenance Administration Position
CIME Customer Installation Maintenance Entity
CIMECO Centro Italiano Metodologie di Controllo
CIMF Customer Installation Management Function
CIMIT Crescendo IPC Messaging Interface Tool
CIMOM Common Information Model Object Manager
CIMS Computer Integrated Manufacturing System
cin C++ Input Stream
CIN Customer Identification Number
CINFO Compiler Information
CIO Channel Input/Output
CIO Chief Information Officer
CIO Counter/Timer and Parallel I/O
CIOA Classical IP over ATM
CIOE Cabinetized Input/Output Equipment
CIP Carrier Identification Parameter
CIP C-Bus Interface Paddle Board
CIP CDMA Interface Peripheral
cip Central Interested Party
CIP Classical IP
CIP Classifier Interface Program
CIP Command Interpreter Preprocessor
CIP Command Interpreter Prompting
CIP Common Image Part
CIP Continuous Improvement Program
CIP Critical Indicator Panel
CIP Customer Interaction Program
CIPE Cabinetized International Peripheral Equipment
CIPOA Classical IP over ATM
CIPSO Commercial IPSO
CIPX Compressing IPX
CIR Calling Line Identity Request Signal
CIR Carrier-to-Interference Ratio
CIR Channel-to-Interference Ratio
CIR Circular
CIR Circular Hunt(ing)
CIR Clock Interrupt Register
CIR Committed Information Rate
CIR Coprocessor Interface Register
CIRC Cross Interleave Reed-solomon Code (Compact Disk)
CIRF Co-channel Interference Reduction Factor
CIRM Comité International Radio-Maritime
CIS Card Information Structure
CIS CDMA Interconnect System
CIS Center for Integrated Systems
CIS Commonwealth of Independent States
CIS Communications Interim Standard
CIS CompuServe Information Service
CIS Computer and Information Science
CIS Computing and Information Science
CIS Contact Image Sensor
CIS Content Information System
CIS Creation Interface Selection
CISC Complete Instruction Set Computer
CISC Complex Instruction Set Computer
CISC Complex Instruction Set Computing
CISG Change ISDN Service Group
CISM Cabinetized Integrated Services Module
CISPR Comite International Special des Perturbations Radioelectrique (in IEC)
CISPR Comite International Special des Peturbations Radioelectriques
CISPR International Special Committee on Radio Interference
CISPR International Special Committee on Radio Interference (in IEC)
CISPR Internationaler Sonderausschuß für Funkstörungen (im IEC)
CISR Channel Interrupt Status Register
CISS Call-Independent Supplementary Services
CIT Committee for Innovation and Technology transfer
CIT Compagnie Industrielle des Telecommunications
CIT Computer Integrated Telephony
CIT Craft Interface Terminal
CITE Citation (HTML tag)
CITEL Comison Interamericana de Telecommunicaciones
CITEL Inter-American Telecommunications Commission
CIU CDMA Interface Unit
CIU Cellular Controller Interface Unit
CIU Complete Interface Unit
CIU Control and Indication Unit
CIU Craft Interface Unit
CIUG California ISDN Users Group
CIV Cell Interarrival Variation
CIV Conversation Interface Verb (LU6.2)
CIW Call Information Window
CIW Container Identification Word
CIX Commercial Internet Exchange
CIX Compulink Information Exchange
CJ Coin Junctor
CJ Committee of Justice (EEC)
CJK Chinese, Japanese, and Korean
CJK-JRG Chinese/Japanese/Korean Joint Research Group
CK Check Bit
CK Check Bits
CK Cipher Key
CK Ciphering Key
CK ISO country code for Cook Islands
CKD Count Key Data
CKD Count, Key, Data
CKE Commercial Key Escrow
CKEY Encrypted KEY
CKF MDII: Continuity Check Failure
CKLN Change Keyset LEN
CKO Checking Operator
CKR Commercial Key Recovery
CKSN Cipher Key Sequence Number
CKSN Ciphering Key Sequence Number
CKT Circuit
CKT-ID Circuit Identification
CL Call Leg
CL Cathodeluminescence
CL Cell Loss
CL Circuit Layout
CL Claim
CL Computer Language (periodical)
CL Congestion Level
CL Connectionless
CL Control Leader
CL Count Register Low Half
CL Cutter Location
CL ISO country code for Republic of Chile
CL1 Congestion Level 1
CL2 Congestion Level 2
CL3 Congestion Level 3
CLA Carrier Local Agent
CLA Carry Look-Ahead
CLA Competitive Local Access
CLAM Coin Line Activity Monitoring
CLAMN Called Line Address Modification Notification
CLAMN Called Line Address Modified Notification
CLAN Connectionless Local Area Network
CLAN Cordless Local Area Network
CLANS Cordless Local Area NetworkS
CLASP CLASS Plus
CLASS Crisp and Linguistic Analysis of Structured Scenarios
CLASS Custom Local Area Signaling Services
CLASS Custom Local Area Signalling Services
CLAT Communication Line Adapter for Teletype
CLB Clear Back
CLB CLear-Back signal
CLB Corel Library File
CLBW Closed-Loop BandWidth
CLC Carrier Liaison Committee
CLC CeneLeC
CLC Corporate Lab Council
CLCD Clear Confirmation Delay
CLCE Cabinetized Line Concentrating Equipment
CLCSE Close Logical Channel Signalling Entity
CLD Called
CLD Called Number
CLD Called Party
CLD Collected Digits
CLDM Corporate Logic Data Model
CLDN Calling Line Directory Number
CLDS Connectionless Data Service
CLDT Common Language Datatypes
CLE Customer Located Equipment
CLEC Competitive Local Exchange Carrier
CLEI Common Language Equipment Identification
CLEI Common Language Equipment Identifier
CLEO Common Language Equipment Order
CLF Calling Line Flash
CLF Calling Line Identification On Flash
CLF Calling Line Identity by Flash
CLF Carrier Line Failure
CLF Clear Forward message
CLF Clear-Forward signal
CLF Common Log Format
CLF Higher layer connectionless channel (fast)
CLFI Common Language Facility Identifier
CLG Calling
CLG Calling Number
CLG Calling Party
CLGE Cabinetized Line Group Equipment
CLHR Cache, Line-Holding Register
CLI Callable Level Interface
CLI Calling Line Identification
CLI Calling Line Identifier
CLI Calling Line Identity
CLI Calling Line Information
CLI Call-Level Interface
CLI CLear Indication
CLI Clear Interrupt
CLI CLear Interrupt mask
CLI Command Line Interface
CLI Command Line Interpreter
CLI Compression Labs Inc.
CLID Calling Line Identification
CLID Calling Line Identification Display
CLID Calling Line Identity Delivery
CLIF Calling Line Identification with Flash
CLIM Cabinetized Link Interface Module
CLIP Calling Line Identification Presentation (supplementary service)
CLIP Calling Line Identity Presentation
CLIP Cellular Logic Image Processor
CLIR Calling Line Identification Restriction (supplementary service)
CLIR Calling Line Identity Restriction
CLIST Command List
CLIST Commands List
CLK Clock
CLLCC Ceramic LeadLess Chip Carrier (IC Package)
CLLI Common Language Location Identification
CLLI Common Language Location Identifier
CLLM Consolidated Link Layer Management
CLM Career Limiting Move
CLM Congested-Link Method
CLMI ISDN Cabinetized Line Module
CLMS ConnectionLess Message Service
CLN Change LEN
CLNAP Connectionless Network Access Protocol
CLNE Customer Located Network Equipment
CLNI Connectionless Network Interface
CLNIP Connectionless Network Interface Protocol
CLNP Connectionless Network Protocol
CLNS Connectionless Network Services
CLNS ConnectionLess-mode Network Service
CLOAX Corrugated-Laminated Coaxial Cable
CLOG Call Logging
C-Log Call History log
CLONES Central Location On-Line Entry System
CLOS Common LISP Object System
CLP Cell Loss Priority
CLP Constraint Logic Programming
CLP Consultant Liaison Program
CLPID Called Party ID
CLR Cell Loss Rate
CLR Cell Loss Ratio
CLR Circuit Layout Record
CLR Clear
CLR Clear Call
CLR CLear Request
CLR Clock Recovery
CLR Combined Line and Recording
CLR Compensation Log Record
CLR Connectionless Routing
CLRC Circuit Layout Record Card
CLRD Clear Request Delay
CLRR Circuit Loudness Rating, Receive
CLRS Circuit Loudness Rating, Send
CLS Closed
CLS Combined Link Set
CLS Connectionless Server
CLS Connectionless Service
CLS higher layer ConnectionLess channel (Slow)
CLSF Connectionless Service Function
CLSI Custom Large-Scale Integration
CLSID Class ID
CLSID Class Identifier
CLSR Combined Link Set Routing
CLSUP Call Supervisor Key
CLTA Comite de Liaison des Telecommunications Trans-Atlantiques (CEPT)
CLTG Change Line Treatment Group
CLTP Connectionless Transport Protocol
CLTS Connectionless Transport Service
CLU Calling Line Identity Unavailable
CLU Network Cluster
CLUI Command-Line User Interface
CLUT Color Lookup Table
CLV Constant Linear Velocity
CLW ClassWizard file
CM Cable Modem
CM Calendar of Meetings (ETSI)
CM Call Memory
CM Call Model
CM Carrier Maintenance
cm Centimeter(s)
CM Chairmen's Meeting (ETSI)
CM Class Manager
CM Class Mark
CM Common Memory
CM Common Mode
CM Communication Management
CM Communication Module
CM Communications
CM Component Manager
CM Computing Module
CM Conference Management
CM Configuration Management
CM Configuration Manager
CM Configuration Map
CM Connection Management
CM Connection Manager
CM Connection Memory
CM Continuity Message
CM Continuous Media
CM Control Memory
CM Correlated Message
CM ISO country code for United Republic of Cameroon
C-M Control-Monitor
CM OA Configuration Management Operations Application
CM2 Communication Module model 2
CM2C Communications Module 2 Compact
CMA Call Management Agent
CMA Changeover Memory Arbitration
CMA Communications Managers Association
CMA Constant Modulus Algorithm
CMA Construction and Maintenance Agreement
CMA Customized Announcement
CMAC Centralized Monitoring and Assistance Center
CMAC Complex Multiple ACcumulator (IBM)
CMAC Control Mobile Attenuation Code
CMAE Channel Management Application Entity
CMAK Connection Manager Administration Kit
CMAP Captive Office MAP
CMAP Centralized MAP
CM-API Consolidated Management Application Programming Interface
CMAS Cellular Management System
CMB Connection Maintenance Busy
CMB Connection Memory Block
CMB Cyclic redundancy check Message Block
CMBH Complex Instruction Buried Heterostructure
CMBO Combination of Flat Rate and Message Rate
CMBS Circuit Mode Bearer Service
CMC Cable Maintenance Center
CMC Call Modification Completed message
CMC Career Management Center
CMC Cellular Mobile Carrier
CMC Central Message Controller
CMC Centralized Management Center
CMC Coherent Multi-Channel Optical Communication
CMC Combining Multicast Control
CMC Common Mail Calls
CMC Common Messaging Calls
CMC Communication Management Configuration
CMC Communication Mode Control
CMC Communications Management Center
CMC CoMplement Carry
CMC Computer-Mediated Communication
CMC Connection Management Computer
CMC Connection Memory Controller
CMC Connectionless Message Control
CMCE Circuit Mode Control Entity (TETRA)
CMCF Control Multiple Call Forwarding
CMCU Communication Module Control Unit
CMD Circuit-Mode Data
CMD Command
CMDC Computing Module Duplex Cabinet
CMDF Combined Main Distribution Frame
CMDF Command Masking Data Facility
CMD-IS Circuit-Switched Mobile Data Intermediate System
CMDR Centralized Message Detail Recorder
CMDR CoMmanD Reject (HDLC, LAP)
CMDS Centralized Message Data System
CMDS Centralized Message Distribution System
CME Circuit Multiplication Equipment
CME Circuit Multiplication Equipment
CME Conformant Management Entity
CME Connection Management Entity
CM-ES Circuit-Switched Mobile End System
CMF Channel Matched Filter
CMF Class Manager Framework
CMF Compelled Multifrequency
CMF Control and Monitoring Function
CMF/PDB Capacity Management Facility Performance Data Base (SNA)
CMFJ Call Modification Reject message
CMgr Call Manager
CMHT Call Mean Hold Time
CMHTBLT Circuit Mode Hunt Terminal Busy Limit Type
CMI Cluster Member Identifier
CMI Code Management Interface
CMI Code Mark Inversion
CMI Coded Mark Inversion
CMI Coding Method Identifier
CMI Common Metallic Interface
CMI Computer Managed Instruction
CMI Control Mode Idle
CMI Cross-Matrix Index
CMIB Circuit Mode Intercom Calls Billing Records
CMIC Computing Module Interface Card
CMIM Common Management Information Model
CMIP Common Management Information Protocol
CMIPDU CMIP Data Unit
CMIPDU Common Management Information Protocol Data Unit
CMIPM CMIP Machine
CMIPM Common Management Information Protocol Machine
CMIS Cabinetized Miscellaneous Equipment Cabinet
CMIS Common Management Information Service
CMISE Common Management Information Service Element
CMIT Common Management Information Transmission
CML Cell Maximum Power Level
CML Chemical Markup Language
CML Chemical Multilayering
CML C-Side Message Link
CML Current Mode Logic
CMM Call Mode Modem
CMM Capability Maturity Model
CMM Channel Mode Modify
CMM Communications Memory Management
CMM Computer Main Memory
CMMU Cache/Memory Management Unit
CMN Communication of MCU Number
CMN Control and Maintenance Network
CMO Common Mode Operation
CMOA Configuration Management Operations Application
CMOL CMIP over LLC
CMOL CMIP Over Logical Link Control
CMOS Comparison Mean Opinion Score
CMOS Complementary Metal-Oxide Semiconductor
CMOT CMIP Over TCP/IP
CMOT Common Management Information Services Protocol Over TCP/IP
CMOT Common Management Over TCP
CMP Camp-On
CMP Channel Management Procedure
CMP Chemical-Mechanical Polishing
CMP Communications Module Processor
CMP Communications Plenum Cable
CMP Compare
CMP Component Portion
CMP Computing Module Processor
CMP Connection Management Protocol
CMP Continuous Multicast Push
CMPT Completion Tone
CMR Call Modification Request message
CMR Cell Misinsertion Rate
CMR Cell Misinsertion Ratio
CMR Cellular Mobile Radio
CMR Centralized Mail Remittance
CMR Channel Mode Register
CMR CLASS Modem Resource
CMR Common Mode Rejection
CMR Communications Riser Cable
CMRA Common Maintainable Resource Aggregate
CMRJ Call Modification Reject message
CMRR Common Mode Rejection Ratio
CMRS Cellular Mobile Radio System
CMRS Cellular Mobile Radio Telecommunications Service
CMRS Commercial Mobile Radio Services
CMRT Cellular Mobile Radio Telephone
CMS Call Management Services
CMS Call Management System
CMS Call Manager Service
CMS Cellular Mobile Switch
CMS Certification Mark Support
CMS Change Management System
CMS Circuit Maintenance System
CMS Circuit Multiplication System
CMS Code Management System
CMS Color Management System
CMS Combined Message Switch
CMS Connection Management Software
CMS Control and Measurement System
CMS Conversational Monitor System (IBM)
CMSA Consolidated Metropolitan Statistical Area
CMSDB Call Management Services Database
CMSDB Call Management System Database
CMSG "C" Message Weighting
CMSM Computing Module Summary
CMSO Centralized Mobile Switching Office
CMSS Cabinetized Miscellaneous Spares Storage
CMT Cadmium Mercury Telluride (IR Detector)
CMT Cartridge Magnetic Tape
CMT Character Mode Terminal
CMT Connection Maintenance
CMT Connection ManagemenT (FDDI)
CMT Correlated Message Traffic
CMTS Cellular Mobile Telephone System
CMTS Centralized Maintenance Test System
CMTS Connection Mode Transport Service (CMNS/CONS)
CMU Card Maintenance Unit
CMU Carnegie Mellon University
CMV Circuit-Mode Voice
CMV Common Mode Voltage
CMVC Configuration Management and Version Control
CMW Compartmented-Mode Workstation
CMWI CLASS Message Waiting Indication
CMWI CLASS Message Waiting Indicator
CMX Connection Memory Control
CMX Connection Memory Controller
CMX Corel Metafile Exchange
CMY Cyan, Magenta, Yellow
CMYK Cyan, Magenta, Yellow, Black
CN Cable Network
CN Calling Number
CN CaNcel
CN Check Not OK
CN Coin Trunk
CN Combined Delivery/Non-Delivery Notification
CN Complete Number
CN Congestion Notification
CN Connect
CN Connected Number
CN Core Node
CN Corporate Network(s)
CN Customer Network
CN ISDN Calling Number Identification Services
CN ISO country code for People's Republic of China
C-n Container-Level n
CNA Calling Number Announcement
CNA Cascaded Network Architecture (as opposed to BNA)
CNA Communication Network Architecture (ITT Inc.)
CNA Connection Not Active
CNA Connection Not Admitted message
CNA Cooperative Networking Architecture (Concert-BT)
CNA Customer Name and Address
CNA DMS-100 North America
CNAB Calling Name Delivery Blocking
CNAB Calling Name Delivery Blocking Toggle
CNABACC Calling Name Delivery Blocking Access Code
CNABBL Calling Name Delivery Blocking Billing Records
CNAC Call Not Accepted Treatment
CNAC CCIS Network Administration Center
CNAD Calling Name Delivery
CNAM Calling Name Delivery
CNAMAC Calling Name Delivery Active/Inactive Status
CNAMBL Calling Name Delivery Billing Records
CNAMD Calling Name Delivery
CNAMD Calling Name Display
CNAME Canonical Name
CNAMPN Calling Name Delivery with Personal Name Delivery Type
CNB Calling Number Blocking
CNB Consumer News and Business
CNC Centralised Network Control
CNC Computer Numeric Control
CNC Computer Numerical Control
CNC Computer Numerically Controlled
CNC Computer(ized) Numeric Control
CNCC Customer Network Control Center
CNCS Carrier Non-Compatible Services
CND Called Party Number
CND Calling Name Delivery
CND Calling Number Delivery
CND Calling Number Display
CND Calling Party Number Delivery
CND Carrier Networks Documentation
CND Customer Network Design
CNDA Calling Number Delivery Activation
CNDAC Calling Number Delivery Active/Inactive Status
CNDB Calling Number Delivery Blocking
CNDB Customer Number Data Base
CNDBO Calling Number Delivery Blocking Override
CNDBTYP Calling Party Number Delivery Blocking Type (Privacy Change Allowed)
CNDD Calling Number Delivery Deactivation
CNDS Customer Network Design System
CNDTYP Calling Party Number Delivery Type
CNE Certified NetWare Engineer
CNE Certified Novell Engineer
CNET Centre National d'Etudes des Telecommunications
CNET Control Network
CNF Conference
CNF Conjunctive Normal Form
CNF Station Controlled Conference
CNF6 Six-Way Conference Calling
CNFL Conference Calling, Larger Than Six-Way
CNFLSZ Conference Calling, Larger Than Six-Way, Size
CNG Calling Tone
CNG Carrier Networks Group
CNG Comfort Noise Generation
CNG Comfort Noise Generator
CNG Fax Calling Tone
CNI Calling Number Identification
CNI Changed Number Interception
CNI Common Network Interface
CNI Customer Premises Equipment Network Integrator
CNIBL Calling Number Information Delivery Billing Records
CNIBLP Calling Number Information Delivery Billing Records for PRI
CNIC Calling Number Identification Circuit
CNIC Clearing Network Identification Code
CNID Calling Number Identification
CNID Customer Network Information Database
CNIDR Clearinghouse for Networked Information Discovery and Retrieval
CNIL Conseil National Informatique et Liberte (F)
CNIMS Customer Network Integrated Management System
CNIP Calling Name Identification Presentation
CNIP Calling Number Identification Present
CNIPPAB Calling Number Identification Public-to-Private and
Private-to-Public Activation Billing Records
CNIPPABP Calling Number Identification Public-to-Private and
Private-to-Public Activation Billing Records for PRI
CNIR Calling Number Identification Restricted
CNIR Calling Number Identification Restriction
CNIR Calling/Connected Name Identification Restriction
CNIS Calling Number Identification Services
CNIS Computer Networks and ISDN Systems
CNL CoNnectionLess
CNL Constant Net Loss
CNL Cursor Next Line
CNM Called Number Mask
CNM Circuit Network Management Message Group
CNM Communication Network Management
CNM Communication Network Management (NetView, VTAM)
CNM Connection Memory
CNM Customer Network Management
CNMA Communication Network for Manufacturing Applications (MAP/MMS) (ESPRIT)
CNMC Corporate Network Management Center (CWAN-ATT)
CNMI Communication NM Interface (SNA)
CNMS Customer Network Management Services
CNN Cable News Network
CNNB Calling Name and Number Blocking
CNND Calling Name and Number Delivery
CNOS CCIS Network Operations System
CNP Charge Number Parameter
CNP Connection Not Possible
CNR Carrier-to-thermal Noise Ratio
CNR Complex Node Representation
CNR Could Not Reproduce
CNRI Corporation for National Research Initiatives
CNS Communication Network Service
CNS Communication Network Support
CNS Connected Party Subaddress
CNS Connection Not Successful
CNS Customer Network Solutions
CNS Customer Networking Solutions
CNSS Core Nodal Switching Subsystem
CNT Coaxial Network Termination
CNTX Centrex
CNU Coaxial Network Unit
CNV Conversion File
CO Call Offer (supplementary service)
CO Call Origination
CO Captive Office
CO Cavity Oscillator (microwaves)
CO Central Office
CO Certificate of Origin
CO Check OK
CO Circuit Order
CO Code Owner
CO Coin
CO Coinbox
CO Combining
CO Conditional Objective
CO COnnection
CO Connection Oriented
CO Connection-Oriented mode
CO Control Out
CO Crystal Oscillator
CO Cutoff
CO ISO country code for Republic of Colombia
CO U.S. postal code for Colorado
CO ID Company Identification
COA Changeover Acknowledgement message
CO-ACD Central Office-Automatic Call Distribution
COAM Centralized Operation, Administration, and Maintenance
COAM Customer Owned and Maintained
COAM Customer Owned And Maintained (equipment)
COARS Central Office Alarm Reporting System
COAX Coaxial Cable
COB Chip On Board
COB Close of Business
COB CO Booking
COB COBOL File
COB Complaint Observing
COBCLI CO Booking Command Line Interface
COBI Connection-Oriented Bearer-Independent
COBOL Common Business-Oriented Language
COBRAnet Corporate Broadband Applications Network
COBS Central Office Business Systems
COBS Consistent Overhead Byte Stuffing
COBUCO Cordless Business Communications
COC Central Office Code
COC Code Owners Consortium
COC Compiler Object Code
COC Consultation Calling
COC Current Operations Channel
COCF Connection Oriented Convergence Functions
COCF Connection-Oriented Convergence Function
COCOM Coordinating Committee for Multilateral Export Controls
COCOS Corporate Communication System
COCOT Customer-Owned Coin Operated Telephone
COCS Conversion of Created Services
COD Connection Oriented Data
COD Cross-Office Delay
COD Cutoff on Disconnect
CODACS Captive Office Digital Access Cross-connect System
CODAN Carrier-Operated Device, Anti-Noise
CODARTS Concurrent Design Approach for Real-Time Systems
CODASYL Conference On Data Systems Languages
CODC Central Office Data Collector
CODEC Coder/Decoder
CODES Central Office Data Engineering System
CODEST COmite de Development European de la Science et de la Technologie
CODETEL Compania Dominicana de Telefonos
CODIT Code Division Testbed
CODP Central Office Data Processor
CODS Connection Oriented Data Service
COE Central Office Equipment
COEES Central Office Equipment Engineering System
COEI Central Office Equipment Installation
COEM Commercial Original Equipment Manufacturer
COEO Central Office Equipment Order
COER Central Office Equipment Report
COF Cause of Failure
COF Cinema of the Future
COF Confusion signal
COF Continuity Failure
COF Cursor Off
COF MDII: Confusion Signal Received
COFA Change of Frame Alignment
COFDM Coded Orthogonal Frequency Division Multiplex
COFDM Coded Orthogonal Frequency Division Multiplexing
C-OFDM Convolutional coding OFDM
COFF Common Object code File Format
COFF Common Object File Format
COFIDEC Coder-Filter-Decoder
COG Central Office Ground
COG Centralized Operations Group
COG Code Owners Group
COH Common Overhead
COH Communication Overhead
COH Connection Overhead
COHO CoHerent Oscillator
COI Community of Interest
COI Connection-Oriented Interconnection
COIC Central Office Interface Circuit
COIN Coin Phone Operational and Information Network System
COKOL Corporate Knowledge On Line
COL Collect
COLA CO Lab Access
CO-LAN Central-Office LAN (BOC)
COLI COnnect Line Identity
COLI COnnected Line Identification (functional entity)
COLI Connected Line Identity
COLP COnnected Line identification Presentation (supplementary service)
COLR Carrier of Last Resort
COLR Circuit Order Layout Record
COLR Connected Line Identification Restriction
COLR COnnected Line identification Restriction (supplementary service)
COLT City of London Telecom
COLT Connection Optimized Link Technology
COM Cable Organizer Module
COM Central Office Maintenance
COM Combined Carrier
COM Comedy Central
COM Command
COM Command File
com Commercial organizations domain
COM Common
COM Common Object Model
COM COMmunication
COM Communications
COM Compact Executable file
COM COMplete
COM Complete
COM Component Object Model
COM Computer Output Microfilm
COM Computer Output Microfilming
CoM Connection Manager
COM Continuation of Message
COMA Cache-Only Memory Architecture
COMAC Comite d'Actions Concertees
COMAS Computerized Maintenance and Administration Support
COMB Combined
COMB Load Combined
COMDAT Common Data
COMDEX Computer Dealers Exposition
COMETT COMmunity programmme for Education and Training for Technology
COMFGD Combined Feature Group D
COMMS Central Office Maintenance Management System
COMMS-PM Central Office Maintenance Management System-Preventive Maintenance
COMPAC Commonwealth Pacific Cable submarine cable
COMPAC COMputer oriented PArt Coding
COMPASS Central Office Maintenance Printout Analysis (GTE)
COMPASS Communications Program for Advanced Switching Services
COMPASS Communications Programs for Advanced Switched Services
COMPENDEX COMPuterized ENgineering inDEX
COMPVH Compiler Virtual Hex (Test Case Language Compiler)
COMS Connection Oriented Message Service
COMSAT Communications Satellite Corporation
COMSEC Communications Security
COMSOC IEEE Communications Society
COMSOFT Consortium for the Management of Emerging Software Technologies
CON Call Connect
CON Concentrator
CON Conference Calling
CON Connect message
CON Connected Party Number
CON Connection Connected
CON Connection oriented
CON Conversation
CON Cursor On
CONCERT Communications for North Carolina Education, Research, and Technology
COND Conditional
CONF Conference Call, Add On (supplementary service)
CONF Conference Calling
CONF Conference Circuit
Conf Confirm
CONF Confirm
CONF Confirmation
CONF Confusion message
CONG Congestion
CONG Congestion message
CONI COnnect Number Identity
CONLAN CONsensus LANguage
CONMAN Connection Manager
CONN CONNect
CONN Connect message
CONN Connection
CONN Connection Manager
CONN Connector
CONN ACK Connect Acknowledge message
CONNACK CONNect ACKnowledgement
ConnND Connected Number Delivery
ConNo Connected Number
CONP COnnect Number identification Presentation
CONP Connection Not Possible Treatment
CONP Connection-Oriented Network Protocol
CONS Connection Oriented-mode Network Service
CONS Connection-Mode Network Service
CONS Connection-Oriented Network Services
CONS Console
CONT Connection Server
CONT Connections Team
CONT Continue
CONT Controller
CONUS Contiguous United States
CONV Conventional
COO Changeover Order message
COO Chief Operating Officer
COO Cost of Ownership
COOP Center for Object-Oriented Programming
COORS CO Ordering and Report System
COOTS Conference on Object-Oriented Technologies and Systems
COP Center of Projection
COP Character Oriented Protocol
COP Character-Orientated Protocol (Data Comm.)
COP Code Of Operation
COP Code Of Practice
COP Code of Practice
COP Complex Operations Parameters
COP Complicated Outpulsing
COP Computer Operating Property
COP Controller Oriented Processor
COP Control-Oriented Processor
COPES Customer Optimized Product Engineering System
COPOLCO ISO council COmmittee on COnsumer POLicy
COPQ Cost of Poor Quality
COPS Circuit Order Preparation System
COPS Complex Operations Per Second
COPS Cutover Preparation Services
COPT Customer Operated Pay Telephone
COPT Customer Owned Pay Telephone
COPWAT Customer-Owned Premises Wiring Acceptance Test
COQ Cost Of Quality
COR Carrier Operated Relay
COR CORrelator
Cor Corrigendum
COR Corrupt Parameter
CORA Call Rater
CORBA Common Object Request Broker Architecture
CORC Customer-Originated Recent Change
CORDIC Coordinate Rotation Digital Computer
CORDS Coordination of Record and Data Base System
CORE Internet Council of Registers
COREPER COmite des REpresentants PERmanents
CORP Career Opportunity Rotational Program
CORR Centralized Office Release Record
CORT Code Owner Request Tracking
CORUM Captive Office Remote User-area Menu
CORWAN Corporate Wide-Area Network
COS Call Origination Status
COS Camera Operating System
COS Class of Service
CoS Class of Service
COS Common Object Services
COS Communication OS
COS Connection Oriented Services
COS CORBA Object Services
COS Corporation for Open Systems
COSAC Canadian Open Systems Application Criteria
COSE Common Open Software Environment
COSE Common Open Systems Environment
COSINE Corporation for Open Systems Interconnection Networking in Europe
COSMIC Common Systems Main InterConnecting
COSMOS Computer System for Mainframe Operations
COSP Central Office Signaling Panel
COSPAR COmmittee on SPAce Research
COSS Central Office Switching System
COSS Common Object Service Specification
COSS1 Common Object Service Specification Volume 1
COSS2 Common Object Service Specification Volume 2
COSS3 Common Object Service Specification Volume 3
COSS4 Common Object Service Specification Volume 4
COSS5 Common Object Service Specification Volume 5
COST Class of Service Tone
COST Cooperations Projects of Scientific and Technical Research
COST European Cooperation in the Field of Science and Technology
COSTAR COmputer STored Ambulatory Record (Medical)
COSTAR Conventional On-line STorage And Retrieval
COSU Central Office Service Unit
COSW Electronic Switching: Central Office Systems of the World;
Amos E. Joel Jr.; IEEE Press, 1976
COT Central Office Terminal
COT Continuity
COT Continuity Check message
COT Continuity Message
COT Continuity Signal
COT Continuity Test
COT Continuity Test message
COT Continuity Test Transceiver
COT Continuity Testing
COT Customer Originated Trace
COTAC Customer Originated Trace Status
COTC Canadian Overseas Telecommunication Corporation
COTDR Coherent Optical Time Domain Reflectometer
COTES COnventional TErrestrial reference System
COTi Continuity Indicator
COTM Customer Owned and Telephone Company Maintained
COTP Connection-Oriented mode Transport Protocol
COTS Commercial Off-The-Shelf
COTS Connection-Oriented mode Transport Service
COTS Connection-Oriented Transport Service
COURT C.O. User Request Tracking
cout C++ Output Stream
COV Changeover
COV Changeover signal
COVER Captive Office Vintage Equipment Records
COW Copy On Write
CP Call Pickup
CP Call Process
CP Call Processing
CP Call Processor
CP Call Program
CP Card Punch
CP Central Processor
CP Choke Packet
CP Circuit Pack
CP Circular Polarization
CP Closed Pending
CP Code Page
CP Collision Presence
CP Common Part
CP Communication(s) Processor
CP Complete Partitioning
CP Confirmed Party
CP Connected Party
CP Connection Pending
CP Connection Performer
CP Connection Point
CP Connection Processor
CP Contention Period
CP Control Point
CP Control Processor
CP Control Program
CP Copy Protected
CP Critical Path
CP Current Product
CP Customer Premises
CP Customer Programmability
CP Customer Programmable
CP/M Control Program/Microcomputer
CP/M Control Programme for Microcomputers
CPA Called Party Address
CPA Carry-Propagate Adder
CPA Circuit Pack Assembly
CPA CLASS Protocol Analyzer
CPA Component Placement Agreement
CPA Control Point Adapter
CPA Co-Polar Attenuation
CPA Critical Path Analysis
CPAAL5 Common Part of AAL5
CPAD Call Processing Agency Driver
CPAN Comprehensive Perl Archive Network
CPAP Customer Premises Access Profile
CPARK Attendant Call Park
CPB Call Processing Busy
CPB Commercial Public Broadcasting
CPB Communication Processor Block
CPB Constrained Parameters Bitstream
CPB Corporation for Public Broadcasting
CPC Call Processing Control
CPC Calling Party Category
CPC Calling Party Control
CPC Carrier Portability Code
CPC Cell Personality Card
CPC Common Part Code
CPC Common Peripheral Controller
CPC Common Product Code
CPC Common Protocol Component
CPC Component Procurement Code
CPC Continuing Professional Competency
CPC Corporate Product Code
CPCCI Conference Permanente des Chambres de Commerce et d'Industrie
CPCE Common Peripheral Control Equipment
CPCH Calling Party Cannot Hear
CPCI Call Processing Control, Incoming
CPCI Calling Party Category Indicator
CPCI ISDN Common Peripheral Control
CPCL Call Processing Class Library
CPCO Call Processing Control, Outgoing
CPCS Common Part Convergence Sublayer
CPCS Customer-Provided Communication System
CPD Call Processing Deloading
CPD Call Processing Description
CPD Central Pulse Distributor
CPD Computer Products Division
CPD Connection Propagation Delay
CPD Cross Polar Discrimination
CPD Cumulative Probability Distribution
CPDC Cabinetized Power Distribution Center
CPDDN Calling Party Default DN(s)
CPDM Call Processing Domain Model
CPE Call Processing Enabled
CPE Central Processing Element
CPE Channel Parameter Estimator
CPE Customer Premises Equipment
CPE Customer Provided Equipment
CPEI ISDN Common Peripheral Equipment
CPF Coin, Pay First
CPF Convolutional, Parity, Fire
CPFC Cost Per Function Code
CPFR Calling Party Forced Release
CPFSK Continous-Phase Frequency Shift Keying
CPFSK Continuous Phase Frequency Shift Keying
CPFT Circuit-Pack Functional Test
CPFT Customer-Premises Facility Terminal
CPG Call Pickup Group
CPG Call Pickup Groups
CPG Call Processing Message
CPG Call Progress message
CPG Circuit Pack Group
CPG Clock Pulse Generator
CPG Code Page
CPG Conference Preparatory Group
CPG1 Call Pickup- Pickup Group 1
CPG2 Call Pickup- Pickup Group 2
CPG3 Call Pickup- Pickup Group 3
CPG4 Call Pickup- Pickup Group 4
CPGA Ceramic Pin Grid Array (IC VLSI Package)
CPGACC Call Pickup Group Access Codes
CPH Call Party Handling
CPH Called Party Hold
CPH Calls Per Hour
CPH Characters Per Hour
CPHB Computer Protocol Heart Beat
CPI Cable Pair Identification
CPI Call Progress Indication
CPI Call Progress Indicator
CPI Calling Party Identification
CPI Central Patents Index
CPI Characters Per Inch
CPI Common Part Indicator
CPI Common Programming Interface
CPI Communication Programming Interface
CPI Computer-to-PBX Interface
CPI Convergence Sublayer Protocol Information
CPI CPE Interface
CPI Cycles Per Inch
CPI Cycles per Instruction
CPI-C Common Programming Interface for Communications
CPID Call Processing Identifier
CPID Calling Party Identification
CPIW Customer-Provided Inside Wire
CPK Call Park
CPKBAS Call Park Basic
CPKDIR Directed Call Park
CPKSEC Directed Call Park with Security Code
CPL Capability Password Level
CPL Commercial Private Line
CPL Control Panel Applets File
CPL Current Privilege Level
CPL Cursor Preceding Line
C-PLANE Control PLANE
C-plane Control plane
CPLD Complex Programmable-Logic Device
CPM Cabinetised Peripheral Module
CPM Call-Progress Monitor
CPM Cards Per Minute
CPM Central Processor and Memory
CPM Common Peripheral Module
CPM Common Process Model
CPM Communications Processor Module
CPM Compact Peripheral Module
CPM Condensed Peripheral Module
CPM Conductive Plastic Material
CPM Conference Preparatory Meeting
CPM Continuous Phase Modulation
CPM Co-ordination and Project team Management department (ETSI)
CPM Core Package Modules
CPM Counts Per Minute
CPM Critical Path Method
CPM Critical-Path Method
CPM Customer Profile Management
CPM Cycles Per Minute
CPMGR Connection Point Manager
CPMS Cable Pressure Monitoring System
CPN Calling Party Number
CPN Cellular Provider Network
CPN Customer Premise(s) Network
CPN Customer Premises Node
CPNDC Calling Party Number Discard Control
CPNIE Calling Party Number Information Element
CPNM Call Processing Notification Manager
CPN-NP Calling Party Number-Network Provided
CPNPA Calling Party Number Presentation Allowed
CPNPN Calling Party Number Provision Necessary
CPNT Calling Party Number Delivery Type
CPN-UPNS Calling Party Number- User-Provided, Not Screened
CPNX Computer Protocol Network Executive
CPOCC Call Processing Occupancy
CPODA Contention Priority-Oriented Demand Assignment
CPOK Smalltalk C Programming ObjectKit
CPOL Communications Procedure-Oriented Language
CPOS Centralized AMA Position
cpp C Preprocessor
CPP C++ File
cpp C++ File
CPP Call Processing Protocol
CPP Calling Party Pays
CPP Common Peripheral Processor
CPP Component Project Plan
CPP Cordless Portable Part
CPP Customer Partnership Program
CPPEC Circuit Pack PEC
CPR Call Path Restoration
CPR Call Processing Record
CPR Change Process Re-engineering
CPR Continuing Property Records
CPR Continuous Progress
CPR Critical Path Restoration
CPR Critical Path Restoration
CPR Current Page Register
CPR Cursor Position Report
CPR Customer Problem Report
CPR1 Channel Priority Register 1
CPR2 Channel Priority Register 2
C-PRK Call Park
CPRTE Call Processing Run-Time Environment
CPS Call Processing Selector
CPS Call Processing Server
CPS Calling Party Sub-Address
cps Calls Per Second
CPS Cards Per Second
CPS Cellular Packet Switch
CPS Characters Per Second
cps Characters Per Second
CPS Circuit Pack Storage
CPS Common Part Sublayer
CPS Content Provider System
CPS Conversation Programming System
CPS Corporate Presence Server
CPS CP Selector
CPS Customer Premises System
CPS Cutoff Priority Scheme
cps Cycles Per Second
cps cycles per second (obsolete, now Hz)
CPSA Calling Party Subaddress
CPSD Calling Party Subaddress Delivery
cpsel CP Selector
CPSG Call Park Subscriber Group
CPSIE Calling Party Subaddress Information Element
CPSK Coherent Phase-Shift Keying
CPSL Confirmed Party Service Link
CPSR Computer Professionals for Social Responsibility
CPST Control Point Spanning Tree
CPT Call Progress Tone
CPT Carolina Public Television
CPT Cisco Protocol Translator
CPT Coinless Public Telephone
CPT Completion Tone
CPT Customer-Provided Terminal
CPTE Customer Premises Terminal Equipment
CPTLB Call Processing Terminal Linkage Block
CPTP Consolidated Product Test Plan
CPTS Coinless Public Telephone Service
CPU Call Pickup
CPU Central Processing Unit
CPU Central Processor Unit
CPUACC Call Pickup Access Codes
CPUB Call Pickup Billing Records
CPUBEX Call Pickup for the Business Environment
CPUDDN Directed Call Pickup
CPUDPU Directed Call Pickup with Barge-In
CPUFW CPU Firmware
CPUN Call Pickup Notification
CPUPEX Call Pickup for the Public Environment
CPVDN Calling Party Valid DNs
CPW Co-planar Waveguide
CPY Copy Backup Catalog File
CQ Channel Queue
CQ Communications Quality
CQA Call Queue Assignment
CQA Certified Quality Auditor
CQA Custom Quality Audit
CQC Cell Queue Controller
CQFP Ceramic Quad Flat Package
CQM Cell Queue Manager
CQM Circuit group Query Message
CQM Circuit Query Message
CQR Circuit group Query Response message
CQR Circuit Query Response message
CR Call Record
CR Call Reference
CR Call Report (TETRA)
CR Call Request
CR Call Restriction (supplementary service)
CR Call Router
CR Card Reader
CR Carriage Return
CR Carrier Recovery
CR Channel Response
CR Chrominance colour difference, Red
CR Clear Record
CR Cluster Robustness Tested
CR Code Restriction
CR Coin Return
CR Comite de coordination des Radiotelecommunications (CEPT)
CR Command Register
CR Component Request
CR Condition Register
CR Conditional Requirement
CR Configuration Record
CR Connection Request
CR Connection-Related function
CR Content Review
CR Contention Resolution
CR Control Register
CR Critical
CR Customer Record
CR Customer's Report
CR ISO country code for Republic of Costa Rica
Cr Red Chrominance
CR/D Code Restriction and Diversion
CRA Call Record Assembler
CRA Call Request Activate
CRA Call Routing Apparatus
CRA Call-Request Activation
CRA Circuit Reservation Acknowledgment message
CRA Customized Recorded Announcement
CRAC Change Request Authorization Committee
CRACF Call-Related Radio Access Control Function
CRAFT Co-operative Research Action for Technology
CRAG Cellular Radio Advisory Group
CRAM Card Random Access Memory
CRAS Cable Repair Administrative System
CRB Change Review Board
CRB Cramer-Rao Bound
CRB Customer Records and Billing
CRBDN Call Redirection Busy Directory Number
CRBE Conversational Remote Batch Entry
CRBL Call Reference Busy Limit
CRBO Centralized Records Business Office
CRBS Cell Relay Bearer Service
CRBT Continuous Ringback Tone
CRC Class, Responsibility, Collaboration
CRC Class-Responsibility-Collaborator
CRC Common Repair Code
CRC Communications Relay Center
CRC Communications Research Centre
CRC Cyclic Redundancy Check
CRC Cyclical Redundancy Check
CRC/BC Cyclic Redundancy Check/Blocked Check
CRC4 Cyclic Redundancy Check procedure
relating to the 2 048 kbit/s basic frame structure according to CC
CRCC Cyclic Redundancy Check Character
CRCC Cyclic Redundancy Code Character
CRCDN Call Redirection or Call Deflection Notification
CRCDS Call Redirection or Call Deflection Selection
CRD Call Rerouting Distribution
CRD Card file
CRD Color Rendering Dictionary
CRD Credit
CRD Customer Requested Delivery
CRDA Call Request Delete All
CRDN Call Redirection Directory Number
CRDN Call Redirection or Deflection Notification
CRDO Centre de recherche pour la defense, Ottawa
CRDP Call Redirection and Deflection Prevention
CRDPC Code Restriction/Diversion Prohibited Codes
CRDPCGP Code Restriction/Diversion Prohibited Codes Group
CRDS Call Request Delete Specific
CRE Call Re-establishment
CRE Call Re-establishment procedure
CRE Conductorship Relinquished
CRE Cordless Radio Equipment
CRED Credit Card Calling
CREF Connection Refusal message
CREF Connection Refused
CREG Concentrated Range Extension with Gain
CREJ Call Rejected
CREN Corporation for Research and Educational Networking
CREST Code Restrictions
CRET Call Retrieve
CRF Call Reference
CRF Call Reference Flag
CRF Cell Relay Function
CRF Connection Related Function(s)
CRF(VC) Virtual Channel Connection Related Function
CRF(VP) Virtual Path Connection Related Function
CRG Charge Information message
CRG Charging
CRG Common Routing Group
CRG Customized Ringing
CRH Classes-Responsibilities-Helpers
CRI Call Request with Identification
CRI Channel Restart Indicator
CRI Continuity Recheck Incoming
CRID Call Record ID
CRIS Customer Records Information System
CRISD Computer Resources Integrated Support Document
CRISP Cascadable Real-Time Integrated Signal Processor
Crit Critical
CRJE Conversational Remote Job Entry
CRL Certificate Revocation List
CRL Computing Research Laboratory
CRL Corporate Reuse Library
CRLB Cramer Rao Lower Bound
CRLF Carriage Return and Line Forward
CRLF Carriage Return, Line Feed
CRM Call Record Management
CRM Cell Rate Margin
CRM Circuit Reservation Message
CRM Component Resource Manager
CRM Connection Request Mode
CRM Control Representation Mode
CRMA Cyclic Reservation Multiple Access
CRMG Call Reference Manager
CRN Call Redirection Notification
CRn Call Reference Number
CRN Call Request with Number
CRN CMWI Ring Notification
CRO Cancel Rerouted Overflow
CRO Cathode Ray Oscilloscope
CRO Central Radio Office
CRO Central Records Office
CRO Certification Requirements Owner
cro Character Reference Open
CRO Continuity Recheck Outgoing
CRODN Call Redirection Out of Order Directory Number
CROM Control Read-Only Memory
CROP Component Rationalization and Optimization
CRP Call Request Packet
CRP Command RePeat
CRP CPU Root Pointer Register
CRPA Controlled Reception Pattern Antenna
CRQ Call Request
CRQ Closed User Group Selection and Validation Request message
CRR Call Request Retrieval
CRR Call Request Retrieve
CRR Circuit Reset Reception
CRR MDII: Reset Signal Received that Aborts Incoming Call
CRRE Corrected Receiving Reference Equivalent
CRS Call Recording Stream
CRS Call Redirection Subscription
CRS Cell Relay Service
CRS Cell Relay-based Service
CRS Centralized Results System
CRS Circuit Reset Sending
CRS Closed User Group Selection and Validation Response message
CRS Communicating Rule Systems
CRS Conference Reservation System
CRS Configuration Report Server
CRS Crescendo
CRS Crescendo Bulk Call Generator
CRS Crescendo Driver
CRS Customer Record Set
CRS Customer Report System
CRSA Centralized Repair Service Attendant
CRSAB Centralized Repair Service Attendant Bureau
CRS-B Crescendo-B (Ameritec BRI bulk call generator)
CRSC Cabinetized Remote Switching Center
CRSDRV Crescendo Driver
CRSN Call Record Sequence Number
CRSS Call Redirection Service State
CRSS Call-Related Supplementary Services
CRST Cluster Route Set Test message
CRT Call Retention (TETRA)
CRT Cathode Ray Terminal
CRT Cathode Ray Tube
CRT Continuous Ring Tone
CRTC Canadian Radio-Television and Telecommunications Commission
CRTC CRT Controller
CRTS Cellular Radio Telecommunications Service
CRTS Cellular Radio Test Set
CRTSIM Cathode Ray Tube Simulator
CRUD Create, Read, Update, Delete
CRUD Create, Retrieve, Update, Delete
CRV Call Reference Value
CRVDN Call Redirection Variable Directory Number
CRX Call Request Exempt
CS Cable Ship
CS Cable Station
CS Call Second
CS Call Segment
CS Call Server
CS Call State
CS Call Store
CS Capability Set (of IN)
CS Carrier Sense
CS Carrier Sensing
CS Carrier System
CS Cell Selection
CS Cell Site
CS Central Secretariat (CEN)
CS Check Sequence
CS Chip Select
CS Chip Select
CS Circuit Schematic
CS Circuit Switch
CS Circuit Switched
CS Circuit Switching
CS Class Style
CS Clear to Send
CS Code Segment
CS Code Server
CS Code Submitted
CS Codeset
CS Codeswitch
CS Coin Stuck
CS Commercial Specification
CS Communication et Signalization (CEPT)
CS Communication Subsystem (IBM)
CS Communication Support
CS Communication(s) System
CS Complete Sharing
CS Computer Science
CS Computer Simulation
CS Configuration Services
CS Connected Subaddress
CS Connection Segment
CS Connection Server
CS Control State
CS Convergence Sublayer
CS Coordinated Single-Layer
CS Cryptoserver
CS C-Side
CS Customer Specification
CS Customer-Specific
CS Higher layer Signalling channel (slow)
CS ISO country code for Czechoslovakia (obsolete)
CS/SS Card Services and Socket Services
CS1 Capability Set 1
CS-1 Capability Set 1
CS-1 IN Capability Set No 1
CS1R Capability Set 1- Refined
CS2 Capability Set 2
CS-2 Capability Set 2
CS-2 IN Capability Set No 2
CS3 Capability Set 3
CS-3 Capability Set 3
CSA Calendaring and Scheduling API
CSA Call Segment Association
CSA Called Subscriber Answer
CSA Canadian Standards Association
CSA Carrier Service Area(s)
CSA Carrier Serving Area
CSA Carry-Save Adder
CSA Client Service Agent (MAP2.1 directory services)
CSA Commercial Specification Agreement
CSA Computing Services Administrator
CSA Computing System Administrator
CSA Computing Systems Analyst
CSAB Computer Science Accreditation Board
CSAC Computer Science Accreditation Commission
CSACCS Customer Service Administration Control Center System
CS-ACELP Conjugate-Structure, Algebraic-Code-Excited Linear Prediction
CSAP Carrier Specific Announcement Phrasing
CSAPI Common Speller Applications Programming Interface
CSAT Customer Satisfaction
CSATS Circuit Switch Automated Test System
CSB Central-Side Busy
CSB Channel Supervision Bit
CSB Client Support Bulletin
CSC Canadian Standards Committee
CSC Cell Site Controller
CSC Central Site Controller
CSC Central Switching Center
CSC Character Sets and their Coding
CSC Circuit Signaling Channel
CSC Circuit Switching Center
CSC Clock Synchronization Circuit
CSC Codeswitch Controller
CSC Common Signalling Channel
CSC Common Supplier Code
CSC Control Signalling Code
CSC Critical Service Circuit
CSC Customer Service Center (ATT)
CSC Customer Service Change
CSCAN Customer Service Computerized Access Network
CSCANS Customer Services Computer Access Network Standards
CSCC Command Session Change Control
CSCC Coordinated State Change Control
CSCD Common Signalling Channel Demodulator
CS-CDPD Circuit-Switched Cellular Digital Packet Data
CSCF Common Service Circuit Frame
CSCM Common Signalling Channel Modem
CSCN Canadian Steering Committee on Numbering
CSCS Common Signalling Channel Synchroniser
CSCV CS Connection View
CSCW Computer Supported Collaborative Work
CSCW Computer Supported Collaborative Working
CSCW Computer-Supported Cooperative Work
CSD Circuit Switched Data
CSD Circuit-Switched Digital Service
CSD Communications Service Division
CSD Communications Systems Division
CSD Corrective Service Diskette
CSD CPS System Description
CSD Customer Service Division
CSDC Circuit Switched Digital Capability
CSDDN Circuit Switched Digital Data Network
CSDDS Circuit Switched Digital Data Service
CSDI Calling Card Service Denial Indicator
CSDI CCAN Service Denial Indicator Identifier
CSDI CCSAN Service Denial Indicator
CSDN Circuit Switched Data Network
CSDS Centralized Software Distribution System
CSDS Customer Service Data System
CSDS Customer Service Database System
CSDS/E Customer Service Data System-Evolution
CSE Cause
CSE Communications Security Establishment
CSE Coordinated Single-Layer Embedded
CSE Customer Service Expert
CSECT Control Section
CSEL Cable Select
CSELT Centro Studi e Laboratori Telecomunicazioni (I)
CSER Consortium for Software Engineering Research
CSF Cell Site Function(s)
CSF Customer Service Functions
CSFID Cross-Service Feature Interaction Detection
CSFP Coded Superframe Phase
CSFT Customer Services Feature Translator
CSG Caller Subscriber Geography
CSH C Shell
csh C Shell
CSH Called Subscriber Held
CSI Call Setup Initialization
CSI Called Subscriber Identification
CSI Carrier Scale Internetworking
CSI Channel State Information
CSI Clearing Subnetwork Identification
CSI Code Selection Indicator
CSI Command Sequence Initiator
CSI Control Sequence Introduction
CSI Convergence Sublayer Indication
CSI Current Source Inverter (Power Electronics)
CSID Call Segment Identifier
CsID Call Segment Identifier
CSID Calling Station Identifier
CSIDE Core Side
C-SIDE Core Side
CSIO Clocked Serial Input/Output
CSIR Co-channel Signal to Interference Ratio
CSL Command and Status Link
CSL Component Sublayer
CSL Component Substitution List
CSL Computer Systems Laboratory (USA)
CSL Constraint Specification Language
CSL Control and Simulation Language
CSL Current-Sinking Logic
CSLIP Compressed SLIP
CSLK Control Side Link
CSLN Client-Server Layer Network
CSLT Created Service Live Testing
CSM Call Segment Model
CSM Call Supervision Message
CSM Cell Site Monitor
CSM Central Service Module
CSM Centralized Software Management
CSM Channel Supervision and Messaging
CSM Channel Supervision Manager
CSM Channel Supervision Message
CSM Combined Symbol Matching
CSM Communication Session Manager
CSM Communication System Management
CSM Communications Services Manager
CSM Communications System Monitor
CSM Complex Services Module
CSM Concorde System Manager
CSM Correed Switching Matrix
CSMA Carrier Sense Multiple Access
CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
CSMA/CD Carrier Sense Multiple Access with Collision Detection
CSMA/CR Carrier Sense Multiple Access with Contention Resolution
CSMO Cell Site Master Oscillator
CSMP Continuous System Modelling Program
CS-MUX Circuit-Switched Multiplexer
CSN Card-Select Number
CSN Cell Site Node
CSN Cellular Service(s) Node
CSN Circuit Switched Network
CSN Cluster Sequence Number
CSN Common Services Network
CSNET Computer + Science Network
CSNET Computer Science Network
CSNP Complete Sequence Number PDU
CSO Central Services Organization
CSO Centralized Service Observation
CSO Cold Start Only
cso Cold Start Only
CSO Components and Supply Operations
CSO Composite Second Order
CSO Computer Service Organization
CSO Customer Service Operations
CSO Customer Service Organization
CSO Customer Services Order
CSOM Computer System Operator's Manual
CSOS Central Support Operating System
CSOS Change Service Order System
CSP Call System Procedure
CSP Character Shape Player
CSP Chip Scale Package
CSP Cluster Server Process
CSP Coin, Semi-Postpay
CSP Coint Sent Paid
CSP Communicating Sequential Process(es)
CSP Communications Services Platform
CSP Communications System(s) Platform
CSP Composite Service Participant
CSP CompuCom Speed Protocol
CSP Control Switch Point
CSP Control Switching Point
C-SPAN Cable Satellite Public Affairs Network
CSPDN Circuit Switched Public Data Network
CS-PDU Convergence Sublayer Protocol Data Unit
CSPM C-Side Peripheral Module
CSPP Computer Systems Policy Project (US)
CSPS Constrained System Parameter Stream
CSQP Customer/Supplier Quality Process
CSR Cell Switch Router
CSR Cell Switch Routing
CSR Cell Switching Router
CSR Channel Status Register
CSR Character Shape Recorder
CSR Code Special Ring
CSR Code Specific Reroute
CSR Communications Standards Review
CSR Consistency Check Request message
CSR Control and Status Register
CSR Customer Service Record
CSR Customer Service Report
CSR Customer Service Representative
CSR Customer Service Request
CSR Customer Station Rearrangement
CSRA Consistency Check Request Acknowledge message
CSRC Contributing Source
CSRE Corrected Sending Reference Equivalent
CSRG Computer Science Research Group
CSRG Computer Systems Research Group
CSRM Call Server Resource Module
CSRU Created Service Resource Utilization
CSS Cascading Style Sheet
CSS Cell Site Simulator
CSS Cell Site Switch
CSS Cellular Simulation System
CSS Cellular Subscriber Station
CSS Comprehensive Software Support
CSS Connection-Successful Signal
CSS Contact Start/Stop
CSS Created Service Simulation
CSS Customer Switching System
CSS1 Cascading Style Sheet Level 1
CSSB Compatible Single SideBand (transmission)
CSSM Cross-SCE Service Maintenance
CSSN Circuit State Sequence Number
CSSP Cache Set Status Port
CSSP Common Services Switching Point
CST Carrier Power Supply, Transistorized
CST Central Standard Time
CST Central Station
CST Class-Of-Service Tone
CST Common Segment Table
CST Computer Supported Telecommunications
CST Connection Switch Table
CSTA Computer Supported Telephony Applications
CSTA Computer-Supported Telecommunications Applications
CSTMGRP Customer Group
CSTO Computing Systems Technology Office
CSTS Customer Service Technical Support
CSU Channel Service Unit
CSU Check Signal Unit
CSU Client State Update
CSU Common Support Unit
CSU Communications Server Unit
CSU Communications Service Unit
CSU Communications System User
CSV Certified System Vendor
CSV Circuit Switched Voice
CSV Comma Separated Value(s)
CSV Common Service Verbs
CSV Cornerstone Voice
CSVD Continuously Variable Slope Delta
CSVR Closed User Group Selection and Validation Request Message
CSVS Closed User Group Selection and Validation Response Message
CSW Channel Status Word
CT Call Tracing
CT Call Transfer
CT Call Transfer supplementary service
CT Call Type
CT Centre du Transit
CT Channel Tester
CT Channel Type
CT Code Table
CT Coding Type
CT Collectable Token
CT Complete Translation
CT Computed Tomography
CT Computer Telephony
CT Computer Terminal
CT Computer Tomography
CT Conformance Testing
CT Conformance Testing
CT Connection Termination
CT Connection Type
CT Continuity Transceiver
CT Control Terminal
CT Cordless Telecommunications
CT Cordless Telephone
CT Critical Interdigital Timing
CT Cross Talk
CT Cut-Through
CT U.S. postal code for Connecticut
CT1 Cordless Telephone 1
CT1 Cordless Telephone 1st generation
CT1+ Version of CT1 using different frequencies for certain countries
CT2 Cordless Telephone 2
CT2 Cordless Telephone 2nd generation
CT-2 Cordless Telephone 2
CT2Plus Cordless Telephone 2 Plus
CT3 Cordless Telephone 3
CT4Q Call Type for Queuing
CTA Call Transfer All
CTA Camp-On Tone Allowed
CTA Common Temporary Address
CTA Cordless Telephone Adapter
CTA Cordless Telephone Apparatus
CTA Cordless Terminal Adaptor
CTAC Customer Technical Advisory Council
CTAG Correlation Tag
CTAK Cipher Text Auto Key
CTAK Ciphertext Auto Key
CTALL Call Transfer of All Calls
CTAO Call Transfer Attendant Only
CTAP Common Temporary Address Pointer
CTAS Customer Technical Assistance and Support
CTB Cable Termination Box
CTB Cable Transition Board
CTB Central Bus
CTB Cipher Type Byte
CTB Composite Triple Beat
CTC Call Type Code
CTC Columbus Technology Center
CTC Continue To Correct
CTC Cursor Tab Control
CTCI Continue To Count Indicator
CTCM Chrominance Time Compressed Multiplexing (VTR)
CTCP Communication and Transmission Control Program (OSI/SNA)
CTCSS Continous Tone Controlled Squelch System (Sub-Audio Signal)
CTCSS Continuous Tone-Controlled Squelch System
CTD Call Topology Display
CTD Camp-On Tone Denied
CTD Carrier Toll Denied
CTD Cell Transfer Delay
CTD Charge Transfer Device
CTD Continuity Tone Detector
CTD Cumulative Transit Delay
CTD Cumulative Trauma Disorder
CTD Cut-Through Delay
CTD Cut-Through Dialing
CTDT Code or Toll Diversion Treatment
CTE Cable Terminating Equipment
CTE Carrier Timing Entry
CTE Channel Translating Equipment
CTE Circuit Terminating Equipment
CTE Coefficient of Thermal Expansion
CTE Computer Telephony Engine
CTE Customer Terminating Equipment
CTE ISDN Class II Equipment
CTF Circuit Free message
CTFJ Computer Telephony Forum of Japan
CTFRS Call Transfer, Fully Restricted
CTFRSAM Call Transfer, Fully Restricted for Analog Member of EKTS
CTFT C-Thin-Film Transistor
CTG Capacitance Tip to Ground
CTI Call Transfer Individual
CTI Call Treatment Indicator
CTI Centralized Ticket Investigation
CTI Colour Transient Improvement (Video)
CTI Compania de Telefonos del Interior
CTI Compile Time Instrumentation
CTI Computer-Telephony Integration (ECMA)
CTIA Cellular Telecommunications Industry Association
CTIG Call Transfer Inside Group
CTINC Call Transfer of Incoming Calls
CTIO Call Transfer Incoming Only
CTIOIG Call Transfer Incoming Only Inside Group
CTIP committee on Computing, Telecommunications and Information Policies
CTL Communication Test Line
CTL Computing Technology Laboratory
CTM Cell Transfer Mode
CTM Communication Terminal Module
CTM Conference Trunk Module
CTM Coordinate Transformation Matrix
CTM Cordless Terminal Mobility
CTM Current Transformation Matrix
CTMB Cell Transfer Matrix Bus
CTME Cabinetized Trunk Module Equipment
CTMF Conformance Testing Methodology and Framework
CTMS Carrier Transmission Maintenance System
CTN Cordless Telecommunication(s) Network
CTN Corporate Telecommunication Networks
CTNP Changed to Non-Published Number
CTO Chief Technical Officer
CTO Corporate Telecommunications Operation
CTO Cut-Off
CTO MDII: Timeout Waiting for Continuity Check Signal
CTOG Call Toggle
CTOG Call Transfer Outside Group
ctor Constructor
CTOS Convergence-Technologies (Inc.) Operating System
CTOS Convergent Technologies Operating System
CTOUT Call Transfer of Outgoing Calls
CTP Cache Tag Port
CTP Condensed Timing Plan
CTP Configuration Testing Protocol (Ethernet/loopback testing)
CTP Connection Termination Point
CTP0 Cache Tag Port Register 0
CTP1 Cache Tag Port Register 1
CTP2 Cache Tag Port Register 2
CTP3 Cache Tag Port Register 3
CTQ Call Transfer Queue
CTR Call Progress Tone Receiver
CTR Call Tone Receiver
CTR Call Transfer
CTR Capacitance Tip to Ring
CTR Columbia University
CTR Common Technical Regulation (ACTE)
CTR Conformance Test Report
CTR Count Register
CTR CounTeR
CTR Counter Register
CTR Current Transfer Ratio
CTR Customer Trouble Report
CTR Response to continue To Correct
CTRA Call Transfer
CTRD Code or Toll, Restriction or Diversion
CTRL Control
CTRT Code or Toll Restriction Treatment
CTRU CAMA TOPS Recording Unit
CTS Cable Terminal Section
CTS Cable Turning Section
CTS Call Throttling Services
CTS Call-Through Simulator
CTS Carpal-Tunnel Syndrome
CTS Carrier Transmit switch
CTS Channel Time Slot
CTS Clear To Send (signal)
CTS Communication(s) Technology Satellite
CTS Compatible Time Sharing (IBM)
CTS Computer TypeSetting
CTS Conformance Test Service(s)
CTS Conformance Testing Service(s) (programme)
CTS Cordless Telephone Services
CTS2 XMHS EXtended MHS CTS
CTSAP Call Transfer Software Application Package
CTSL Core Test Services Layer
CTSS Compatible Time Sharing System
CTSS Computerized Tandem System Switch
CTT Cable Trouble Ticket
CTT Cellular Terminal Testing
CTT Code TransparentTtransmission
CTT Computed Transmission Tomography
CTTC Coax To The Curb
CTTE Common TDMA Terminal Equipment
CTTH Coax To The Home
CTTL Call Transfer to Tie Lines
CTTLAM Call Transfer to Tie Lines for Analog Member of EKTS
CTTU Central Trunk Test Unit
CTTU Centralized Trunk Test Unit
CTU Cabin Telecommunications Unit
CTU Cable Termination Unit
CTU Caribbean Telecommunication Union
CTU Cartridge Tape Unit
CTU Central Termination Unit
CTU Customer Terminal Unit
CTUP Chinese TUP
CTV Colour TeleVision
CTW Call Transfer Warning Tone
CTX Centrex
CTXCO Centrex Central Office
CTXCU Centrex Customer
CU Central Unit
CU Channel Unit
CU Control Unit
CU Cooling Unit
CU Cornell University
CU Customer
CU Customer Use
CU ISO country code for Republic of Cuba
CU See you
CUA Common User Access (SAA-IBM)
CUB Cursor Backward
CUC Charge Unit Count
CUCCA Columbia University Center for Computing Activities
CUD Cursor Down
CUE Character-Terminal User Environment
CUE Corporate UNIX Environment
CUF Channel Utlization Factor
CUF Cursor Forward
CUG Clean-Up Group
CUG Closed User Group (supplementary service)
CUG/OA Closed User Group with Outgoing Access
CUGFORM CUG Format
CUGIci CUG Interlock Code Indicator
CUGIDX Closed User Group Index
CUGNID CUG Network Identifier
CUGSELTYP Closed User Group Selection Type
CUI Character User Interface
CUI Character-Oriented User Interface
CUIF Control Unit Interface
CUJ The C User's Journal
CUJ The C/C++ User's Journal
CUL See you later
CUP Call User Procedure
CUP Credit Update Protocol
CUP Cursor Position
CUPS Customer Unspecified Private Services
CUR Cursor Resource file
CURACF Call-Unrelated Radio Access Control Function
CUS Customer Signoff
CUSD Call Forward Usage Sensitive Denial
CUSF Call-Unrelated Service Function
CUSP Call-Unrelated Service Point
CUSTCTL Customer Controlled
CUSTID Customer Identification
CUT Circuit Under Test
CUT Class Under Test
CUT Control Unit Terminal (IBM)
CUT Cutoff
CUTTD Cut Through Dialing
CUU Cursor Up
CV CallVer
CV Code Violations
CV Coding Violation
CV Connection View
CV Curriculum Vitae
CV ISO country code for Republic of Cape Verde
CVBS Composite Video, Blanking and Synchronisation signal
CVBS Composite Video, Burst, and Sync
CVC Compact Video Coded
CV-CRC Coding Violations CRC
CVD Chemical Vapor Deposition
CVD CodeView Debugger
CVD Compact Video Disk
CVD Coordinated Voice and Data
CVDSM Continuously Variable Slope Delta Modulation
CVF Compressed Volume File
CVG Convergence
CVG-PDU Convergence PDU
CVH Clocked Violation HI
CVI CVT Request Message
CVIS Conversant Voice Information System
CVL Clocked Violation LO
CVM Circuit Validation Test message
CVN MDII: Vacant National Number (VNN) Signal Received
CVNM Customer Virtual Network Management
CVP Content Vectoring Protocol
CVR Circuit Validation Response message
CVR CVT Response Message
CVRAM Cached VRAM
CVRT Connection View Round-Trip Time
CVS Central Video Server
CVS Connection View State
CVS Current Virtual Address Space
CVSD Continuous Variable Slope Detection
CVSD Continuously Variable Slope Delta (coder)
CVSDM Continuously Variable Slope Delta Modulation
CVSL Cascade Voltage Switch Logic
CVT Circuit Validation Test
CVT Circuit Validation Test message
CVT Constant-Voltage Transformer
CVT Cursor Vertical Tab
CVW Codeview for Windows
CW Call Waiting (supplementary service)
CW Clockwise
CW CommunicationsWeek (periodical)
CW Contention Window
CW Continuous Wave
CW Control Word
CW Create Window
CW/F Call Waiting/Forwarding
CWA Call Waiting Allowed
CWA Communication Workers of America
CWAI Clear and WAit for Interrupt
CWAN Corporate WAN (ATT)
CWAS Call Waiting Auto-Suppression
CWB Call Waiting Billing Records
CWC Cable and Wireless Communications
CWC Call Waiting Cancel
CWCA Call Waiting Call Appearance for Analog Member of EKTS
CWCAM Call Waiting Cancel for Analog Member of EKTS
CWCGO Call Waiting Cancel Intragroup Only
CWCIO Call Waiting Cancel Incoming Only
CWD Call Waiting Deluxe
CWD Call Waiting Denied
CWD Current Working Directory
CWD Dial Call Waiting
CWDL Call Waiting Dial
CWDLACC Call Waiting Dial Access Code
CWDLAM Call Waiting Dial for Analog Member of EKTS
CWHA Call Completion With Announcement
CWI Call Waiting Indication
CWI Call Waiting Indicator
CWI Call Waiting, Intragroup
CWI Change Window Indicator
CWIO Call Waiting Incoming Only
CWIS Campus-Wide Information System
CWND Congestion Window
CWO Call Waiting Originating
CWOA Call Completion Without Announcement
CWOAM Call Waiting Origination for Analog Member of EKTS
CWP Communicating Word Processor
CWP Costed Work Programme (ETSI)
CWP Current Working Point
CWQ1 Call Waiting Queue Interval 1
CWQ2 Call Waiting Queue Interval 2
CWQ3 Call Waiting Queue Interval 3
CWR Call Waiting Reports
CWR Call Waiting Ringback
CWR Change with Referral to New Number
CWRI Change Window Reply Indicator
CWRT Call Waiting Reports Terminal(s)
CWRU Case Western Reserve University
CWS Combined World Switch
CWS1 Combined World Switch One
CWT Call Waiting
CWT Call Waiting Termination
CWT Call Waiting Tone
CWTAM Call Waiting Termination for Analog Member of EKTS
CWTGO Call Waiting Intra-Group Only
CWTIO Call Waiting Incoming Only
CWX Call Waiting Exempt
CX Co-eXistence standard
CX Coinbox
CX Compatible eXpansion
CX Composite
CX Composite Signaling
cx Count for x length (short)
CX Count register
CX ISO country code for Christmas Island
CXC Call-by-Call
CxC Call-by-Call
CXE Containment and Cross Reference Engine
CXR Call Transfer
CXR Call Transfer Recall
CXR Carrier
cxx C++ File
CY Calendar Year
CY CapacitY
cy Count for y length (short)
CY CYcle
CY ISO country code for Republic of Cyprus
CYL Cylinder
CYMK Cyan, Yellow, Magenta, and Black
CYTA Cyprus Telecommunications Agency
CZ ISO country code for Czech Republic
D Data D Data channel d deci (10-1) D Decimal D Deficiency D Delivery confirmation bit D Delta channel D Deprecated D Detailed D Diagonal (link) D Disconnect D Dispersion D Distance D channel Signalling channel (in CT2) D&OS Deployment and Operations Support D&OS Directory and Operator Services D/A Digital/Analogue D/A Digital-to-Analog D/C Down Converter D/D Digital to Digital D/L Download D/U Delay Unit D+R Drop and Repeat node D1 Directory One D1 Number of User-Assigned Call Control TEI Values D2 Number of Switch-Assigned Call Control TEI Values D2048U 2048 kbit/s Digital Unstructured ONP leased line D3D Direct 3D D64U 64 kbit/s Digital Unstructured DA Data Acquisition DA Data Available da deca (10+1) DA Delayed Activation DA Demand Assignment DA Design Accepted DA Destination Address DA Destination Allocation DA Development Agreement DA Device Attributes DA Digit Absorbing DA Digital Access DA Digital Announcer DA Direct Access DA Direct Attribute DA Directory Agent DA Directory Assistance DA Discretionary Assurance DA Distinctive Alerting DA Distributed Access DA Distribution Area DA Doesn't Answer DA Double Armor DA Double Armored DA Draft Addendum D-A Digital to Analog DA/CWI Distinctive Alerting/Call Waiting Indication DAA Data Access Arrangement DAA Data Access Arrangement (Bell) DAA Data/digital Access Arrangement DAA Directory Assistance Automation DAAR Dynamic Automatic Alternative Routing DAB Digital Audio Broadcasting DABCE Deactivation of Automatic Bridging Call Exclusion DABE Deny All But Emergency DABG Distinctive Alerting Call Waiting Business Group DABG Distinctive Alerting for BBG Members DABM Dual Access Buffer Memory DABR Data Address Breakpoint Register DAC Data Access Card DAC Datafield Access Conditions DAC Demand Assignment Circuit establishment DAC Digital to Analog Converter DAC Directory Access Command DAC Discretionary Access Control DAC Dual Attach Station Concentrator DACC Directory Assistance Call Completion DACCS Digital Access Cross-Connect System dacd Dial Carrier Access Code DACD Directory Access Control Domain DACE Data Administration Center Equipment DACIA Dual Asynchronous Communication Interface Adaptor DACL Discretionary Access-Control List DACRM Data Communication Recovery Manager DACS Digital Access and Cross-Connect System (AT&T) DACS Digital Access Crossconnect System DACWAC DARCW Active/Inactive Status DACWNL Distinctive Alerting/Call Waiting Number List DAD Datapac Adviser (Telecom Canada) DAD Demand Assignment circuit Disestablishment DAD Desktop Application Director DAD Destination Address Display DAD Draft Addendum DAdC Divert AdC DAdm Dial Administration DADS Delayed Call Database Administration DADS Directory Assistance Database Service DAE Data Access Evolution DAE Digital Audio Extraction DAEDR Delimitation, Alignment, Error Detection (Receiving) DAEDT Delimitation, Alignment, Error Detection (Transmitting) DAF Destination Address Field DAF Digital Audio File (digital audio tape) DAF Directory Access Function DAF Distributed Applications Framework DAF Distributed Architecture Framework DAF DQDB Access Functions DAFT Distributor Architecture Focus Team DAG Data Address Generator DAG Datenanschaltegerat (Data Connection Unit) DAG Directed Acyclic Graph DAHR Data Address Hold Register DAI Data Abstraction Interface DAI Data Accumulation Interval DAI Deny All International DAI Digital Audio Interface DAI DPMS/Application System Interface DA-I ISDN Distinctive Alerting Indication DAIS Data Access Interface Session DAIS Defense Automatic Integrated Switching System DAIS Direct Access Intercept System DAIS Distributed Application Integration System DAL Dallas DAL Data Access Language DAL Data Access Line DAL Database Administration Language DAL Dedicated Access Line DAL Direct Access Line DAL Direct Access Link DAL Distinctive Alerting DALAC Distinctive Alerting Active/Inactive Status DALACC Distinctive Alerting Access Codes DALB Distinctive Alerting Billing Records DALBACC Sistinctive Alerting Business Group Access Codes DALCOD DAta Line COncentrator/Deconcentrator DALLE Distinctive Alerting List Editing DALLEACC Distinctive Alerting List Editing Access Code DALLEBACC Distinctive Alerting Business Group List Editing Access Code DALNL Distinctive Alerting Number List DALNLS Distinctive Alerting Number List Size DALRC Distinctive Alerting Restricted Control DALRCAM Distinctive Alerting Restricted Control for Analog Member of EKTS DALT Distinctive Alerting Toggle DAM DECT Authentication Module DAM DECT Authentication Module DAM Device Adapter Manager DAM Diagnostic Acceptability Measure DAM Draft Amendment DAMA Demand Assignment Multiple Access DAML Digital Added Main Line DAMPS Digital Advanced Mobile Phone System D-AMPS Digital Advanced Mobile Phone System D-AMPS Digital AMPS DA-MSP Distributed Access MSP DAN Desk Area Network DAN Destination Address Number DANI Direct Automatic Number Identification DAO Data Access Objects DAO Database Access Object DAO Digits-as-Outpulsed DAP Data Access Protocol DAP Destination Access Point DAP Digital Access Point DAP Directory Access Protocol (X.500, DUA-DSA) DAP Dispatch Application Processor DAP Display Administration Process DAP Distributed Array Processor DAPI Destination Access Point Identifier DAPR Destination Address Pointer Register DAPSK Differential Amplitude Phase-Shift Keying DAQ Define Area Qualification DAR Daily Activity Report DAR Data Address Register DAR Defense Acquisition Regulations DAR Digital Audio Radio DAR Direct- and Alternate-Routed DAR Directional Alternate Routing DAR Dynamic Alternative Routing DARC Data Radio Channel (Japan) DARC Deutscher Amateur Radio Club (D) DARCW Distinctive Alerting/Ringing Call Waiting DARE Data Analysis and Representation Engine DARPA Defense Advance Research Projects Agency (USA) DARPA Defense Advanced Research Projects Agency DARS Digital Audio Radio Service DART Data Access and Reporting Tool DART Debugger for Remote Target DART Debugging, Analysis, and Run-time Tools DART Direct Audio RouTines DART Dump and Restore Table DARTS Design Approach for Real-Time Systems DAS Data Acquisition System DAS Data Auxiliary Set DAS Decimal Adjust after Subtraction (80x86 inst) DAS Demonstrator Access System DAs Dienstanschluss (Service Terminal) DAS Digit Analysis Selector DAS Digital Alarm Scanner DAS Direct Analogue Synthesis (signal generator) DAS Directory Assistance Services DAS Directory Assistance Simulator DAS Directory Assistance System DAS Dual Attach Station DAS Dual Attachment Station (FDDI) DAS Dual-Attachment Station DAS Dynamic Allocation Scheme DAS/CCI CCI Directory Assistance System DASA Daimler-Benz Aerospace AG DASD Direct Access Storage Device DASD Direct Access Storage Device (SNA) DASE Daily Aggregate Service Events DASH Description of Architecture and Services Harmonisation (ETSI) DASH Direct Access Storage Handler DASIM Directory Assistance Simulator DASK Digital implementation for Amplitude-Shift Keying DASK Display Agents Status Key DASK Display Agents Summary Key DASL Digital Adaptor for Subscriber Line DASM Direct Access Storage Media DASP Drive Active/Slave Present DASS Demand Assignment Signalling and Switching DASS Digital Access Signalling System DASS Direct Access Secondary Storage DASS Distributed Authentication Security Service DASS2 Digital Access Signalling System Number 2 DAT Data DAT Data File DAT Dedicated Access Trunk DAT Delay Alerting Timer DAT Digital Audio Tape DAT DQDB Access Termination DAT Duplicate Address Test DAT Dynamic Address Translation DATAM Document Architecture Transfer And Manipulation DATAS DMS Accounting and Traffic Analysis System DATE Dedicated Access to X.25 Transport Extension (OSI/SNA) DATEL DAta TELecommunication-DAta TELegraph-DAta TELephone DATV Digital Assistance for TV DATV Digitally Assisted TeleVision DAU Data Arithmetic Unit DAV Data Above Voice DAV Data Above Voice DAV DAta Valid (IEEE-488 Bus Signal) DAV Date of AVailability DAVC Delayed Automatic Volume Control DAVIC Digital Audio-VIsual Council DAVID Data Above Video DAVLC Data Above Voice Line Card DB Data Base DB Data Block DB Database DB Daughter Board dB Decibel(s) DB Device Buffer DB Dummy Burst dB(775mV) deciBel relative to 775 mV dB/Rm deciBel per kilometer DB2 Database 2 DBA Data Base Administrator/-tion DBA Database Administrator dBA deciBel (Audio, Weighting Curve A) dBA Decibels of acoustical loudness, A-weighted DBA Dynamic Bandwidth Allocation DBAM Data Base Access Method DBAS Database Administration System DBAT Data BAT dBc dB relative to the carrier power DBC Default Bearer Capability DBC Downbanded Cellular DBC Dummy Bearer Control DBC Dynamic Beam Control (Video Camera Tubes) DBCES Dynamic Bandwidth Circuit Emulation Service DBCP Database Control Point DBCS Database Control System DBCS Double-Byte Character Set DBD Database Desktop DBD Disk Block Descriptor DBDL Data Base Description Language DBE Double-Buffering Extension DBEF Dual Brightness Enhancement Film DBF Digital Beamformer DBH Direct Broadcasting to Home DBI Data Base Index dBi deciBel relative to an isotropic radiator DBIC Data Enhanced Bus Interface Card DBIF Data Buffer Interface DBIMOS DMOS/BIMOS DBIN Data Bus In DBIR Directed Beam Infrared DBIT D Bit D-bit Delivery Confirmation bit DBK Dialback DBL Database Language DBL Detailed Billing DBL Double Connection DBM Data Base Manager DBM Database Management dbm dB relative to 1 milliwatt dBm Decibels relative to 1 milliwatt DBM Dial Backup Module DBM Double Balanced Mixer dBm0 Decibels relative to 1 milliwatt at the 0 TLP dBm0p deciBel relative to Origin Psophometrically weighted DBMC Database Management Center dBmp deciBel relative to 1 milliwatt psophometrically weighted DBMS Database Management System DBN Dial by Name DBNE Test Not Equal, Decrement, and Branch (680x0 inst) DBNN Delete Bridged Night Number DBO Drop Build-Out DBOC Drop Build-Out Capacitance DBOR Drop Build-Out Resistance dBov dB below overload point DBP Database Processor DBP Deutsche Bundespost DBP Deutsche BundesPoste (D, obsolete) DBPM Differential BiPhase Modulation DBPT Deutsche Bundespost Telekom dBr deciBel, relative level DBR Deterministic Bit Rate dBr Relative Decibels dBrN deciBel with reference to Noise dBrnC Decibels above reference noise level with C-message weighting dBrnC0 Decibels above reference noise level with C-message weighting at the 0 TLP DBS Data Base System DBS Data Bridging Service DBS Database Server DBS Direct Broadcast from Satellite DBS Direct Broadcast(ing) by Satellite DBS Direct Broadcast(ing) Satellite DBS Duplex Bus Selector DBS-PC Direct Broadcast Satellite PC DBT Deutsche Bundespost Telekom DBTR Digital Bit Timing Recovery dBu Decibels relative to 1 microwatt DBU Dynamic Bandwidth Utilization dBV deciBel relative to one Volt ( 0 dBV = 1 V ) DB-VSB Dual-Binary Vestigial Sideband dBW deciBel relative to one Watt ( 0 dBW = 1 W ) DBX Digital Branch eXchange (PBX) DC Data Cartridge DC Data Center DC Data Cncentrator DC Data Communication DC Data Communications (periodical) DC Data Conversion DC DDOC Completed DC Define Constant DC Delayed Call DC Design Close DC Design Complete DC Destination Category DC Destination Class DC Device Context DC Device Control DC Device Controller DC Device Coordinates DC Diagnostic Controller DC Digit Collection DC Direct Call DC Direct Current DC Directional Coupler DC Disconnect Confirm DC Disk Change DC Display Controller DC Distribution Center DC DRU Component DC Dry Circuit DC Physical D-Channel DC U.S. postal code for District of Columbia DC1 Device Control 1 DC2 Device Control 2 DC3 Device Control 3 DC4 Device Control 4 DC-600 Data Cartridge 600 DCA Austrian DCM DCA Defence Communication Agency (DoD) DCA Design Change Authorization DCA Destination Connection Agent DCA Digit Collection Allocate DCA Digital Communications Architecture DCA Digital Communications Associates DCA Direct Customer Access DCA Distributed Communications Architecture (Univac) DCA Distributed Computing Architecture DCA Document Communications Architecture (SNA. TOP) DCA Document Content Architecture (LU6.2/DISOSS/TOP) DCA Dynamic Channel Allocation DCA Dynamic Channel Assignment DCA Dynamic Context Addressing DCAF Distributed Console Access Facility DCAP Data Communications Application DCAP Display Capability DCB Data Cache Block DCB Data Control Block DCB D-Channel Backup DCB Device Control Block DCB Digital Channel Bank DCBI Directed Call Pick-Up with Barge-In DCBX Directed Call Pick-Up Barge-In Exempt DCC Data Carrier Detect (Modem Signal) DCC Data Communications Channel DCC Data Communications Circuit DCC Data Country Code (OSI-NL) DCC D-Channel Controller DCC Destination Code Cancel DCC Device Cluster Controller (Networks) DCC Device Color Characterization DCC Differential Chain Code DCC Digit Collection DCC Digital Color Code DCC Digital Compact Cassette DCC Digital Control Channel DCC Digital Country Code DCC Digital Cross-Connect DCC Digroup Control Card DCC Digroup Controller Card DCC Direct Cable Connection DCC Distributed Call Center DCC Flexible Calling Deactivate Conference Facility DCCA Distributed Control Channel Allocation DCCC Double Current Cable Code DCCE Digital Cellular Common Equipment DCCH Dedicated Control CHannel DCCH Digital Control Channel DCCS Distributed Capability Computing System DCCT Direct Current-Current Transformer DCD Data Carrier Detect (signal) DCD Design Change Document DCD Dialed Category Digit DCDN Direct Call Directory Number DCE Data Circuit-Terminating Equipment DCE Data Communications Equipment DCE Design Cost Estimation DCE Digit Collection Error DCE Digital Carrier Equipment DCE Dispatcher Control Entry DCE Distributed Computing Environment (OSF) DCE Drum Cable Engine DCF Data Communication Function DCF Data Conversion Facility DCF Data Count Field DCF DC Fuse Panel DCF Denied Call Forward DCF Denied Call Forwarding DCF Disengage Confirm DCF Disengage Confirmation DCF Dispersion-Compensating Fiber DCF Distributed Coordination Function DCF Document Composition Facility DCG Dispersion Compensating Grating DCH D-Channel Handler DCH Delete Character(s) DCHI D-Channel Handler Interface DCHL D Channel DCI Data Communication Interface DCI Delivery of Complementary Information DCI Digit Collection Instruction DCI Digital Carrier Interface DCI Display Control Interface DCI Dynamic Control Interface DCIC Disallowed Card Issuer Code DCIL Design Compatible Issue Lineup DCIS Direct Common-Channel Interoffice Signaling DCIU Data Channel Interface Unit DCIU Data Communication Interface Unit DCK A Derived Cipher Key DCK Derived Cipher Key DCL Declaration DCL Delayed Call Limit DCL Digital Command Language DCLCAD Direct Call Logical Channels Assigned to D-Channel DCLCANUPB Direct Call Logical Channels On Nailed-Up B-Channels DCLCAODB Direct Call Logical Channels On On-Demand B-Channels DCLID Dialable Calling Line Identification DCLU Digital Carrier Line Unit DCM Data Collection Management DCM Dial-Code Management DCM Digital Carrier Module DCM Digital Controller Module DCM Dispersion Compensation Module DCM Dynamic Connection Management DCM-B Digital Carrier Module-Basic DCMD Data MMU/Cache Command Register DCME Data Circuit Multiplication Equipment DCME Digital Circuit Multiplexing Equipment DCME Digital Circuit Multiplication Equipment DCMG DCME Gain DCMPAC Digital Carrier Module Pretest and Cutover DCMPMC D-Channel Message Performance Monitoring and Control DCM-R Digital Carrier Module-Remote DCMS Digital Circuit Multiplication System DCN Data Communication(s) Network DCN Design Change Notification DCN DisCoNnect DCND DTMP Calling Number Delivery DCO Data Central Office DCO Demand Continuity Outgoing DCO Dial Central Office DCO Digital Central Office DCO-EPN Data Central Office-End Point Number DCOFF Designated Control Office DCOM Distributed Component Object Model DCOMIS Dial Central Office Management Information System DCOP Digit Collection and Outpulsing DCOSW Electronic Switching: Digital Central Office Systems of the World; Amos E. Joel Jr.; IEEE Press, 1982 DCOT Digit Collection and Outpulsing Team DCOT Digital Central Office Terminal DCP Data Communications Processor DCP D-Channel Processor DCP Device Control Protocol DCP Digital Communications Protocol DCP Direct Connect Partner DCP Directed Call Pickup DCP Distributed Collaborative Planning DCP Drop and Continue on Protection DCPA Distributed Call Processing Architecture DCPBH Double Channel Planar Buried Heterostructure (laser diode) DCPK Directed Call Park DCPL DCT Programming Language DCPN Domestic Customer Premises Network DCPSK Differential Coherent Phase Shift Keying DCPT Data Communication Between Different Protocol Terminals DCPU Directed Call Pickup DCPU Directed Call Pick-Up Non-Barge-In DCPU/BI Directed Call Pick-Up with Barge-In DCPX Directed Call Pickup Exempt DCR Data Conversion Receiver DCR DC Voltage On Ring DCR Degradation Category Rating DCR Design-Change Recommendation DCR Destination Call Routing DCR Destination Control Request signal DCR Digit Collection Resource DCR Directory Charge Recording DCR Dummy Call Reference DCR Dynamic Conformance Requirement DCR Dynamic Context Reference DCR Dynamically Controlled Routing DCS Data Collection System DCS Data Communication Subsystem DCS Data Communications Synchronization DCS Defense Communications System DCS Defined Context Set DCS Defined Context Set (OSI-PL) DCS Desktop Color Separation DCS Device Control String DCS Digital Cellular Switch DCS Digital Cellular System DCS Digital Channel System DCS Digital Clock Source DCS Digital Command Signal DCS Digital Communications System DCS Digital Control System DCS Digital Crossconnect System DCS Digitally Coded Squelch DCS Distributed Communication System DCS Distributed Control System DCS Document Control Standard DCS Dynamic Channel Selection DCS Dynamic Configuration Select DCS 1800 Digital Cellular System working at 1800 MHz DCS1800 Digital Communications System- 1800 MHz DCS1900 Digital Communications System- 1900 MHz DCSC Data Customer Support Center DCSM Digital Cell Site Monitor DCT Data Call Tester DCT Data Capture Tool DCT DC Voltage On Tip DCT Digit Collection Apply Tone DCT Digital Call Tester DCT Digital Carrier Trunk DCT Digital Communications Test System DCT Digital Cordless Telephone DCT Digital Cross-Connect Trunk DCT Discrete Cosine Transform (compression alg./CCITT) DCT Dispatcher Control Table DCT Display Compression Technology DCTB Disconnected, Call Being Taken By DCTL Data MMU/Cache Control Register DCTL Direct Coupled Transistor Logic DCTL Direct-Coupled Transistor Logic DCTN Defense Commercial Telecommunications Network DCTS Destination Code Traffic Summary DCTS Digital Cellular Time Switch DCT-S Digital Communications Test System-SPARCstation DCTU Directly Connected Test Unit DCU Data Control Unit DCU Data-Cache Unit DCU Digit Collection Utility DCU Dispersion Compaction Unit DCU Drum Control Unit DCUG DMS Centrex Users Group DCW Data Code Word DCW Detailed Call Walkthrough DCW Detailed Call Walkthru DCW Dial Call Waiting DCW Display Call Waiting DCW Drop and Continue on Working DD Data Definition DD Data Descriptor DD Data Dictionary DD Data Distributor DD DDOC Section: Design Description DD Deferred Delivery DD Definition List Description (HTML tag) DD Delay Dial DD Detailed Design DD Diagnostic Driver dd Didot DD Digital Data DD Digital Design (periodical) DD Digital Display DD Direct Dial DD Direct Dialed DD Direct Dialing DD Discriminating Digit DD Double Density Dd Double density DD Double Dispatching DD ISO country code for German Democratic Republic (obsolete) DDA Defined Display Area DDA Digital Differential Analyzer DDA Digital Directory Assistance DDA Domain-Defined Attribute DDA DSP Design Association DDB Device-Dependent Bitmap DDB Display Data Block DDB Distributed Data Base DDB Distributed Database DDBI DD/Billing-System Interface DDBM(S) Distributed Data Base Management (System) DDC Decimating Down Converter DDC Digital Data Channel DDC Digital Data Connectivity DDC Digital Downconversion DDC Direct Digital Control DDC Disk Drive Controller DDC Display Data Channel DDC Distributed Database Coordinator DDC1 Display Data Channel 1 DDC2B Display Data Channel 2B DDCA Dynamic Distributed Channel Assignment DDCE Digital Data Conversion Equipment DDCF Distributed Document Component Facility DDCMP Digital Data Communication Message Protocol (DEC) DDCMP Digital Data Communications Message Protocol DDCS Distributed Database Connection Services DDD Data Display Debugger DDD Digital Diagnostic Disk DDD Direct Distance Dialling DDD Double-Diffused Drain (FET structure) DDE Direct Data Entry DDE Distributed Debugging Environment DDE Dynamic Data Exchange DDEML Dynamic Data Exchange Management Library DDES Direct Data Exchange System DDF Data Deviation File DDF Data Distribution Framework DDF Digital Distribution Frame DDF MDII: No Start Dial- Delay Dial, Steady Off-Hook DDFA DTC Device File Access DDGL Device Dependent Graphic Layer (TOP) DDI Data Server/DPMS Interface DDI Device Driver Interface DDI Direct Dial In DDI Direct Dialling In (supplementary service) DDI Direct Digital Interface DDIE Direct Digital Interface Equipment DDIS Data Distributor DDJ Dr. Dobb's Journal (periodical) DDJST Dr. Dobb's Journal of Software Tools (periodical) DDK Device Driver Kit DDK Driver Development Kit DDL Data Definition Language DDL Data Description Language DDL Derived Data Link DDL Digital Data Link DDL Digital-system Design Language DDL Drive and Directory List DDLC Digital Data Line Card DDLC Double-Density Linecard DDLC Dual Data Link Controller DDM Data Distribution Manager DDM Data Distribution Model DDM Digital Data Multiplexer DDM Direction Division Multiplexing DDM Directional-Division Multiplexing DDM Distributed Data Management DDM Distributed Data Management architecture DDM Distributed Data Manager DDM Distributed Data Model DDMA Distributed DMA DDMA Dual Direct Memory Access DDME Design Delivery Management Environment DDMS DMS Data Management System DDN Data Directory Number DDN Data-Driven Network DDN Defense Data Network (DoD) DDN Destination Directory Number DDN Dialable Directory Number DDN Dialable Number Delivery DDNA Destination DNA DDNS Dynamic Domain Naming Services DDO Denial Decision Object DDO Direct Dial Overseas DDO Dynamic Data Object DDOC Design Document DDOV Digital Data Over Voice DDP Data Delivery Protocol DDP Datagram Delivery Protocol DDP Digital Data Processor DDP Distributed Data Processing DDR Digital Data Receiver DDR Digital Distribution Rack DDR Double Data Rate DDS Dataphone Digital Service (ISDN) DDS Digital Data Service DDS Digital Data Storage DDS Digital Data System DDS Digital Display Scope DDS Direct Digital Synthesis (signal generator) DDS DMS Debug System DDS DMS Debugging System DDS-3 Digital Data Storage-3 DDSBS Duplex Dual-Serial Bus Selector DDSN Digital Derived Services Network DDT Default Distribution Tree DDT Delayed Dialing Tone DDT Detailed Design Team DDT Digital Data Transmitter DDT Dynamic Debugging Tool DDU Dialogue Data Unit DDU Digital Data Unit DDU Disk Drive Unit DDU Diskette Drive Unit DDV Dialog Data Validation DDX Dialog Data Exchange DDX Digital Data Exchange DDX-C Digital Data Exchange Circuit-switched DDX-P Digital Data Exchange Packet-switched DE Data Element DE Data Element (FTAM) DE Data Entry DE Data-Execution DE Decision Element DE Design Estimate DE Designated Entity DE Destination Exchange DE Development Estimate DE Discard Eligibility DE Discard Eligible DE Display Element DE Display Enable DE Display Equipment DE Domestic Environment DE Draft European telecommunication standard (ETSI) de Internet country code for Germany DE ISO country code for Germany DE U.S. postal code for Delaware DEA Data Encryption Algorithm DEA Data Encryption Algorithm (DoD) DEA Deactivation DEA Delete Authcode DEAF Default Error Action Flag DEB Demand-Established B-Channel DEC Decimal DEC DEClination DEC DECrement DEC Decrementer Register DEC Digital Equipment Corporation (now Digital) DEC Digital Exchange Controller DECCO Defense Commercial Communications Office DECNET Digital Equipment Corporation Network DECPSK Differentially Encoded Coherent Phase Shift Keying DECT Digital Enhanced Cordless Telecommunications DECT Digital European Cordless Telecommunications DECT Digital European Cordless Telephone DECUS Digital Equipment Computer Users Society DED Distant End Disconnect DEE Data Encryption Equipment DEE Datenendeinrichtung (Data Terminal Equipment) DEF Definition DEF Destination Element Field DEF Module Definition File DEFOML Default Overload Messaging Limit DEG Datenendgerat (Data Terminal) deg Degrees DEK Dansk Elektroteknisk Komite (DEN) DEK Data-Encrypting Key DEKITZ Deutsche Ko-ordinierung fur IT-Normen konformitatsprufung und Zertifizierung DEL Decode Encode Language DEL Delete DEL Delete line from hunt group DEL Deloaded DEL Direct Exchange Line DELCF Delete Casual Feature DELPH Delete Packet Handler Options DELTA Development of European Learning through Technological Advance DEM Digital Elevation Model DEMKO Denmarks Elektriske MaterielKOntrol (DK) DEMO Demonstration DEMOD DEMODulator DEMS Digital Electronic Messaging Service DEMUX Demultiplexer DEMUX DEMUltipleXer DEN Directory Enabled Networks DEO Delete Option(s) DEO Delete Order DEO Digital End Office DEPIC Dual Expanded Plastic Insulated Conductor DEQPSK Differentially-Encoded Quadrature Phase Shift Keying DER Data Exception Report DER Distinguished Encoding Rules DES Data Encryption Standard (IBM) DES Destination End Station DES Destination End System DES Diagnostic Error Signaling des Diagnostic Error Signaling DES Digital Echo Suppressor DES Digital Encryption Standard DES Discrete Event Simulation DES Distributed End System DESA Dual Emergency Stand-Alone DESC Defense Electronic Supply Center DESC Defense Electronic Supply Center (United States Military) DESC Descriptor DESC Design Environment Steering Committee DESC Development Environment Standards Committee DESC Development Environment Steering Committee DESCBC DES Chain Block Coding DESE DES Encryption Protocol DESECB DES Electronic Code Book DESEP Destination Separations Class DESS Data Engineering Support System DEST Destination DET Design Effectiveness Tools DET Detach DET DETach DET DETector DEV Deviation DEV Device DEVCO ISO council DEVelopment COmmittee DEW Distant Early Warning system (US/Canada Military Radar System) DF Data Fanout DF Data Field DF Design File DF Design Finished DF Diagnostic Fault DF Digital Filter DF Direction Finding DF Direction Flag DF Distributing Frame DF Distribution Function DF Don't Fragment flag DFA Dedicated File Area (Multijob) DFA Deterministic Finite Automaton DFA DXI Frame Address DFAD Dual Facility Access Digroup DFARS Defense Federal Acquisition Regulations DFB Distributed Feedback DFB Distributed FeedBack (laser diode) DFC Data Flow Control DFC Design for Characterization DFC Destination Function Code DFC Disk File Controller DFD Data Flow Diagram DFD Displaced Frame Difference DFE Decision Feedback Equalization DFE Decision Feedback Equalizer DFE Design for Environment DFE Direct Forward Equalizer DFF Data Flow Function DFG Data Flow Graph DFG Deutsche Forschungsgemeinschaft DFG Difference Frequency Generation DFI Design For Installability DFI Digital Facility Interface DFI Digital Fiber Interface DFI Direct Fiber Interface DFI Domain-Specific Format Identifier DFI Domain-Specific Part Format Identifier DFIL Data Fill DFIR Diffused Infrared DFK Definable Function Key DFLT Default DFLTSC Default Source DFM Design for Manufacturability DFM Digital Frequency Modulation DFMS Digital Facility Management System DFN Defining Instance (HTML tag) DFP Digital Filter Processor DFP Digital Flat Panel DFP Distributed Functional Plane DFR Default Rate DFR Document Filing and Retreival (OSI-AL) DFS Depth-First Search DFS Distributed File Service DFS Distributed File System DFSA Deterministic Finite State Automata DFSE Decision Feedback Sequence Estimator DFSG Direct Formed Supergroup DFSK Double Frequency Shift Keying DFSM Deterministic Finite State Machine DFSM Dispersion Flattened Single Mode DFT Demand Flow Technology DFT Design for Test DFT Design for Testability DFT Diagnostic Function Test DFT Digital Facility Terminal DFT Discrete Fourier Transform DFT Discrete Fourier Transformation DFT Display Focus Team DFT Distributed Function Terminal DFT Distributed Functional Terminal DFT Distribution Functional Terminal (IBM) DFT DPNSS Feature Transparency DFT DraFT DFTI DMOPRO File Transfer Interface DFU Data File Utility DFU Digital Facilities Unit DFWMAC Distributed Foundation Wireless Media Access Control DG Data General DG Datagram DG Differential Gain DG Directorate General (CEC) DGA Device Group Actor DGCEL Digital Cellular DGCRA Dynamic GCRA DGIII Directorate General III (of the CEC) DGN Diagnostic DGNA Dynamic Group Number Assignment (TETRA) DGND Digital GrouND DGP Digipulse DGP Dissimilar Gateway Protocol dGPS differential GPS DGPT General Department of Post and Telecommunications DGR Digroup DGT Digital Graphic Terminal DGT Digitone DGT Direccion General de Telecomunicaciones (E) DGT Directorate General of Telecommunications DG-UX Data General Unix DGXIII Directorate General XIII (of the CEC) DH Data Register High Half DH Diffie-Hellman DH Directed Handoff DH Double Heterostructure D-H Diffie-Hellman DHA Dialogue Handling DHA Direct Hardware Access DHC Dynamic Host Configuration DHCF Distributed Host Command Facility (NetView) DHCP Domain Host Control Protocol DHCP Dynamic Host Configuration Protocol DHI Dual Host Interface DHN Digital Home Network DHR Dynamic Hierarchical Routing DHT Define Huffman Table DHT Diversity Handover Trunk DHTML Dynamic HTML dHTML Dynamic HTML DHUG Dynamic High Usage Group DI Data In DI Data Interface Di Data Inverted DI Deactivate Indication DI Decrementer Interrupt DI Design Inspection DI Design Interpretive DI Destination Index DI Dielectric Insulation DI Dielectric Isolation DI Direct Index DI Disable Interrupt DI Document Index DI Draft Interface DI Draft Interfaces Available DI Draft Interim European Telecommunication Standard (ETSI) DIA Document Interchange Architecture (IBM) DIA Document Interchange Format (IBM-LU6.2) DIA DSP Interface ASIC DIAC DIode-Alternating-Current-switch DIAG DIAGnostic element DIAG Diagnostic Output System DIAG Diagnostics DIAGN Diagnostics DiagPl Diagnoseplatz (Diagnosis Station) DIALAN DMS Integrated Access Local Area Network DIANE Direct Information Access Network for Europe DIB Device-Independent Bitmap DIB Directory Information Base (X.5OO) DIB Dual Independent Bus DIBL Drain-Induced Barrier Lowering DIBOL DEC Business Oriented Language DIC Delay Interval Compensation DIC Digital Concentrator DIC Direct InterLATA Connecting DICAN Digital Customer Access Network DICE Digital Circuit Emulation DICP Digital Integrated Cellular Peripheral DICT Direct InterLATA Connecting Trunk DID Data Identifier DID Data Item Description DID Design Intent Document DID Digital Information Display DID Direct Inward Dial DID Direct Inward Dialing DID Directory Identifier DIDD Deny International Direct Dial DIDDNR DID Directory Numbers Range DIDRTI DID Route Index DIDTC D-Channel Incoming Default Throughput Class DIEL Advisory Committee on Telecommunications for Disabled and Elderly People (UK) DIF Data Interchange Format DIF Differential Backup Catalog File DIF Digital Interface DIF Digital Interface Format DIF Digital Interface Frame DI-FET Dielectric Isolation Field Effect Transistor DIFS Distributed Coordination Function Interframe Space DIG Digit Collection DIG Digits dig Domain Information Groper DIG3610 3/6/10 Digit Trigger DIG4 Digital 4-Wire Trunk DIGCOL Digit Collection DIGL Device Independent Graphics Layer (TOP) DIGS Device Independent Graphics Service (TOP) DII Dynamic Invocation Interface DIL Device I/O Library DIL Dual-in-Line DIM Desktop Information Manager DIM DIMension DIMA Direct Inward Mobile Access DIMM Dual In-Line Memory Module DIMPS D-Channel Incoming Maximum Packet Size DIN Denied Incoming DIN Deutsche Industrie-Norm/Deutches Institut fuer Normung DIN Deutsche Industry Norm (German Industry Standard) DIN Deutsches Institut für Normung e. V. DINA Direct Inward Network Access DINA Distributed Information-Processing Network Architecture DINE Denied Incoming Exempt DIO Data In/Out (IEEE-488 Bus Signal) DIO Device Input/Output DIO Direct Input/Output DIO Discrete Input/Output DIOB Data Input/Output Buffer Register DIOCES Distributed Interoperable and Operable Computing Environments and Systems DIOSS Distributed Office Support System DIP Data Interchange Protocol DIP Data Interface Process DIP Document Image Processing DIP Dual In-Line Package DIP Dual In-line Package DIR Direction DIR Directory DIR Directory List (HTML tag) DIRM Directory Maintenance DIRP Device Independent Recording Package DIRT Design Inspection Reporting Tool DIS Development Information System DIS Digital Identification Signal DIS Digital Interface System DIS Disconnect DIS Distributed Interactive Simulation DIS Draft International Standard DIS Driver Information System DIS Dynamic Impedance Stabilization DIS The Disney Channel DISA Defense Information Systems Agency DISA Direct Inward System Access DISC Device for Integrated Surveillance and Control DISC Digital International Switching Center DISC Disconnect DISC Disconnect message DISCD Disconnected DISCTO Disconnect Timeout DISD Discrimination Digit DISH Data Interchange in Shipping DISOSS Distributed Office Support System DISOSS DIStributed Office Support System (DCA/IBM) DISP Directory Information Shadowing Protocol DISP Display DISP DISPlay Information Element DISPH Displayphone DISPID Display Identification DISTRING Distinctive Ringing DISTXT Display Text DISU Digital International Switching Unit DIT Depth of Inheritance Tree DIT Digital Input (editing) Terminal DIT Directory Information Tree DITEC DIgital Television EnCoding DIU Data Interface Unit DIU Deutsche ISDN Unit DIU Digital Interface Unit DIU Digital Interworking Unit DIU Document Interchange Unit (IBM-LU6.2) DIV Data-In-Voice DIV Digital Interactive Video DIV Digitale Vermittlungsstelle (Digital Switching Exchange) DIV Digitale Vermittlungstechnik (Digital Switching Technology) (Digital Exchange) DIV Digitales Vermittlungssystem (Digital Switching System) DIV DIVision DIVA Data Inquiry-Voice Answer DIVA Digital Input-Voice Answerback DIVA Digitale Vermittlungstechnik fuer den Auslandsferndienst (International Digital Exchange) DIVA Digitale Vermittlungstechnik fur den internationalen Ferndiens (International Digital Exchange) DIVF Digitale Vermittlungstechnik fuer den Ferndienst (Digital Switching Technology for Long Distance) DIVF Digitale Vermittlungstechnik fur den nationalen Ferndienst (Tandem Digital Exchange) Divine Digital Video Narrowband Emission DIVO Digitale Ortsvermittlungsstelle (Local Digital Exchange) DIVO Digitale Vermittlungstechnik fur den Ortsdienst (Local Digital Exchange) DIVO Local Digital Switch DIVOdg Digitale Vermittlungstechnik fur den Ortsdurchgang (Local Tandem Exchange) DIVOT DIgital to VOice Translator Divx Digital Video Express DIX D-Channel Index DIX DEC- Intel- Xerox Corp. DIX DEC/Intel/Xerox DJ Double-Jump DJ ISO country code for Republic of Djibouti DJN/R Dow Jones News/Retrieval DK Datakit DK ISO country code for Kingdom of Denmark DKE Deutsche Elektrotechnische Kommission im DIN und VDE (D) DKI Driver-Kernel Interface DKM DV-Strom Kontroll-Modul DKO Delete Key Option DKS Digital Key System DL Data Link (layer) DL Data Link Layer Service DL Data Register Low Half DL Decode Level DL Definition List (HTML tag) DL Delete Line DL Dial Level DL Digital Line DL Digital Link DL Discrete Listening (TETRA) DL Distance Learning DL Distribution List DL Download DL Network Layer (Layer 3)-Data Link Layer (Layer 2) Interface DL- communication between layer 3 and Data Link layer DL/I Data Language No.1 DLA Data Looparound DLA Delayed Acknowledgement DLA Digital Line Extender DLANN Delay Announcement DLANN2 Delay Announcement 2 DLANN3 Delay Announcement 3 DLANN4 Delay Announcement 4 DLBB Data Layer Building Block DLC Data Line Card DLC Data Link Connection DLC Data Link Connections DLC Data Link Control DLC Data Link Control protocol (ANSI) DLC Data Link Controller DLC Datapath Line Card DLC Digital Channel DLC Digital Line Card DLC Digital Link Control DLC Digital Loop Carrier DLC Dynamic Load Control DLC Signaling-Data-Link-Connection-Order Signal DLCB Data Link Control Block DLCC Data Link Control Chip DLCEI Data Link Connection Endpoint Identifier DLCF Data Link Control Field DLCI Data Link Connection Identifier (ISDN/LAPD) DLCI Digital Loop Carrier Interface DLCL Data Line CLock (Video VPS) DLCMI Direct Link Connection Management Interface DLD Data Link Discriminator DLD Display List Driver dld Dynamic Loader DLE Data Latch Enable DLE Data Link Entity DLE Data Link Escape (Character) DLE Data Link Event DLE Digital Local Exchange DLE Digital Loop Electronics DLE Direct Line Equipment DLE Dynamic Lightpath Establishment DLEI Data Link Endpoint Identifier DLG Dialog DLG Dialog File DLH Data Link Handler DLH Distributed Line Hunt(ing) DLI Data Link Identifier DLI Data Link Interface DLI Digital Line Interface DLI Dual Link Interface DLL Data Link Layer DLL Data Link Layer (OSI) DLL Delay-Locked Loop DLL Dial Long Line DLL Digital Local Line DLL Dynamic Link Library DLL Dynamically-Linked Library DLLCC DLL & C Connect DLM Data Line Module DLM Data Link Connection Order Message DLM Data Link Manager DLM Data Link Module DLM Digital Line Module DLM Signaling-Data-Link-Connection-Order Message DLMAP Data Link Map DLMKS Data Line Module Key Set DLO Data Line Occupied DLOG Disk Logs DLP Data Line Protector DLP Data Link Processor DLP Decode Level Point DLP Dienstleistungsprozesse DLP Digital Light Processing DLP Digital Light Processor DLPI Data Link Provider Interface DLR Design Layout Record DLR Design Layout Report DLR Digital Locate Receiver DLRR Digital Loop Replacement Radio DLS Data Link Service DLS Data Load Segment DLS Digital Line System DLS Distance Learning Service DLS Downloadable Sample DLSAP Data Link Service Access Point DLSC Digital Local Switching Center DLSDU Data Link Service Data Unit DLSE Dial Line Service Evaluation DLSO Dial Line Service Observing DLSw Data Link Switching DLT Data Linkage Table DLT Delete DLT Digital Line Termination DLT Digital Linear Tape DLT Digital Loop Transceiver (ISDN) DLTS Deep-Level Transient Spectroscopy DLTS Direct Line Telephone System DLTU Digital Line and Trunk Unit DLTU Digital Line Trunk Unit DLU Dialog Unit DLUR Dependent Logical Unit Requester DLUS Dependent Logical Unit Server DLVBLTYP Delivery Features Billing Records Type DLVFEAT ISDN Delivery Features Toggle DLVFEATACC ISDN Delivery Features Business Group Access Codes DLVFEATRC ISDN Delivery Features Restricted Control DLVFEATRCAM ISDN Delivery Features Restricted Control for Analog Member of EKTS DLYOP Delayed Outpulsing " Dm Control Channel (ISDN terminology applied to mobile service) " DM Data Manager DM Data Mark DM Data Memory DM Data Mode DM Data Modem DM Data Modification DM Data Multiplexer Dm Data-Mobile Channel DM Degraded Minute(s) DM Delta Modulation DM Derived MAC sublayer DM Design Manager DM Desirability Measure DM Desktop Management DM Deutsche Mark DM Device Management DM Device Manager DM Diagnostic Manager DM Diagnostic Monitor DM Dienstmerkmal (Service Feature) DM Differential Mode DM Digital Milliwatt DM Digital Modem DM Direct Mode (TETRA) DM Disconnect Mode (HDLC, LAPB) DM Disconnected Mode DM Distribution Manager DM Distribution Manager (NetView-IBM) DM Domain Model DM ISO country code for Commonwealth of Dominica DMA Deferred Maintenance Alarm DMA Direct Memory Access DMA0 Data Memory Address Register 0 DMA1 Data Memory Address Register 1 DMA2 Data Memory Address Register 2 DMAC Direct Memory Access Controller DMAI Direct Memory Access Interface D-MAP D-field MAP DMB D-Channel Maintenance Busy DMB Disconnect and Make Busy DMC DMS Maintenance Controller DMC Dual Modem Card DMC Dynamic Memory Controller DMCL Device Media Control Language DMCT Denied Malicious Call Termination DMCT Deny Malicious Call Termination DMD Development Management Document DMD Differential Mode Delay DMD Digital Micromirror Device DMD Digital Micromirror Display DMD Directory Management Domain DMD Dot-Mapped Display DMD0 Data Memory Data Register 0 DMD1 Data Memory Data Register 1 DMD2 Data Memory Data Register 2 DMDD Distributed Multiplexing Distributed Demultiplexing DMDR DPN Management Data Router DME Data Modem Extension DME Direct Memory Execution DME Distance Measuring Equipment (Avionics) DME Distributed Management Environment (OSF) DMERT Dual Multi-Environment Real Time DMERT Duplex Multi-Environment Real Time DMF DAT Management Function DMF Display Management Format DMF Distribution Media Format DMH Data Message Handler DMH Data Message Handling DMI Data Management Interface DMI Data Mode Idle DMI Definition of Management Information DMI Desktop Management Interface (group) DMI Digital Multiplexed Interface DMI Disable Manual Input DMI Distributed Management Interface DMIS Dimensional Measuring Interface Specification V.2 (OSI) DMIS Directory Management Information System DML Data Manipulation Language DMM Device Maintenance Manager DMM Digital Multi-Meter DMMU Data Memory Management Unit DMNI/RCR Digital Mobile Communications Network Internode/Radio Center for Research DMO Data Modification DMO Data Modification Order(s) DMO Domain Management Organization DMODEM Digital Modem DMOPRO Data Modification Order Processor DMOPRO Data Modification Orders Process DMOS Degradation Mean Opinion Score DMOS Diffused Metal Oxide Semiconductor DMP Development Management Process DMP Document Management Procedure DMP Dot Matrix Printer DMPDU Derived Medium access control Protocol Data Unit DM-PDU Derived MAC Protocol Data Unit DMR Demultiplexing/Mixing/Remultiplexing DMR Digital Microwave Radio DMR Digital Mobile Radio DMRV Fifth Nordic Seminar on Digital Mobile Radio Communications DMS Data Management System DMS Defense Message System DMS Defense Messaging System DMS Digital Multiplex System DMS Document Management System DMS Domain Management System (Siemens) DMS ES DMS Expert System DMSD Digital Multistandard Coding DMSE DMS Evolution DMSES DMS Expert System DMS-MTX DMS Mobile Telephone Exchange DMS-NMS DMS Network Management System DMS-NSS DMS-Network Services System DMSPH DMS-100 Packet Handler DMS-PH DMS Packet Handler DMSPL DMS Product Library DMSRID Default MSRID DMSU Digital Main Switching Unit DMT Digital Multiplex Terminal DMT Discrete Multitone DMT Dynamic Matrix Testing DMT0 Data Memory Transaction Register 0 DMT1 Data Memory Transaction Register 1 DMT2 Data Memory Transaction Register 2 DMTF Desktop Management Task Force DMTF Desktop Management Task Force DMTM Data Management and Transmission Module DMTS Distinguished Member of Technical Staff DMU Data Memory Unit DMV Dynamically Managed Voice DMW Digital Milliwatt DMXR Demultiplexer DMZ Demilitarized Zone DN Delivery Notification DN Destination Network DN Developer Network DN Dialing Number DN Directory Number DN DiscoNnect DN Distinguished Name DN/CT Directory Number/Call Type DNA Data Network Address DNA Deutschen Normenausschuss DNA Digital Network Architecture (DEC) DNA Distributed Network Architecture (NCR) DNA Dynamic Network Architecture DNA FS Distributed Internet Applications for Financial Services DNAPI Directory Number Appearance ID DNB Directory Number Bridging DNBAM DN Bridging for Analog Member of EKTS DNBD Deutsches Network Broadcasting Delivery DNBFC DNB for EKTS or Flexible Calling for Non-EKTS DNC Digital Node Controller DNC Direct Numerical Control DNC Directory Number Check DNC Directory Number Contention DNC Do Not Collect DNC Dynamic Network Control DNC Dynamic Network Controller DNCAP Directory Number/Call Appearance DNCP DECnet Control Protocol DNCT Directory Number/Call Type DND Data Network Division DND Department of National Defence DND Dialable Number Delivery DND Directory Number Dependent DND Do Not Disturb (supplementary service) DNDG Do Not Disturb- Group DNDGX Do Not Disturb, Selected-Group Station Diversion DNDI Do Not Disturb- Individual DNEC Digital Network Echo Control DNF Disjunctive Normal Form DNG Dynamic Network Gateway DNH Directory Number Hunt(ing) DNHD Directory Number High and Dry DNHR Dynamic Non-Hierarchical Routing DNI Data Network Interface DNI Deny National and all International DNI Digital Network Interconnect(ing) DNI Digital Network Interface DNI Digital Non Interpolation DNI Directory Number Independent DNIC Data Network Identification Code DNIC Data Network Identifier DNIC Digital Network Interface Circuit DNID Deny National and International Direct Dial DNIS Dialed Number Identification Service DNL Differential Non-Linearity (Analogue-Digital Converters) DNN Data Network Number DNP Directory Number Profile DNPA Data Numbering Plan Area DNPC Directory Number Primary Inter-LATA Carrier DNPC Dual Network Packaged Core DNPIC Directory Number Primary InterLATA Carrier DNR Directory Number Reference DNR Domain Name Resolver DNR Dynamic Noise Reduction DNS Data Network System DNS Distributed Name Service (DSM-Tandem) DNS DN Set DNS Domain Name Server DNS Domain Name Service DNS Domain Name System (TCP/IP-DoD) DNSIX Defense Network Secure Information Exchange DNSP Distributed Networked Services Platform DNSS DN Screening Set Option DNT Dialed Number Trigger DNTR Denied Termination Treatment DNTU Digital Network Terminating Unit DNTX Do Not Transmit DNTYP Multiline Hunt Terminal Type DNU Digital Networking Unit DNU Do Not Use DNUI Directory Number User Interface DNUS Digital Network Unit-SONET DNU-S Digital Networking Unit-SONET DNW DECT NetWork DNX Digital Network Crossconnect DO Data Out DO Data Output DO Database Owner DO Denied Origination DO Derived Object DO Design Objective DO Disallowed Operation DO Distributed-Object DO ISO country code for Dominican Republic DoA Date of Announcement DOA Dead On Arrival DOA Direction of Arrival DOAS Dial Out Attribute Selector DOC Declaration of Conformity DOC Department of Commerce DOC Department of Communications DOC Distributed Object Computing DOC District Operations Center DOC Document File DOC Drop-Out Compensation (Video Tape Recorder) DOC Dynamic Overload Control DOCAT Digital Optical CAble-television Trunk system DoD Department of Defense DoD Department of Defense (USA) DOD Direct Outward Dial DOD Direct Outward Dialing DODTC D-Channel Outgoing Default Throughput Class DoE Demonstration of Equivalence DOE Department of Energy DOE Distributed Object Environment DOE Distributed Objects Everywhere DOEORB DOE Object Request Broker DOF Data Order File DOF Degrees of Freedom DOHB Draw-Off/Hold-Back DOI Department of Industry DOI Depth of Inheritance DO-I ISDN Denied Origination DO-ID Derived Object Identifier DOJ Department of Justice DOM Distributed Operational Measurements DOM Document Object Model DOM Domain Object Model DOME Distributed Object Management Environment DOMF Distributed Object Management Facility DOML Default Overload Messaging Limit DOMPS D-Channel Outgoing Maximum Packet Size DOMSAT Domestic Satellite DON Digital Overlay Network DOORS Dynamic Object Oriented Requirements System DOOS Dependent Out-of-Service DoP Date of Publication (ETSI) DOP Dilution of Precision DOP Direction of Projection DOP Directory Operational binding management Protocol DOPSK Differential Offset Phase Shift Keying DOR Date Of Ratification DOR Dead Office Recovery DOR Denied Origination DOR Denied Origination Treatment DOR Digital Optical Recording DOR Division of Revenue DORG Denied Origination DORS Dial Out Routing Server DoS Denial of Service DOS Directory & Operator Services DOS Disk Operating System DOS/VS Disk Operating System/Virtual Storage DOSBS Data Over Speech Bearer Service DOSF Distributed Office Support Facility (IBM) DOSX DOS Extender DoT Department of Telecommunications DOT Distributed Object Technology DOT Document Template File DOTS Digital Office Timing Supply DOUS Digit Outpulser Utility Service DOV Data Over Voice DOV Data Over Voice DoW Date of Withdrawal (ETSI) DP Data Partitioning DP Data Port DP Data Processing DP Dataport DP Delivery Process DP Demarcation Point DP Designer Productivity DP Detection Point DP Diagnostic Port DP Dial Pulse DP Dial Pulsing DP Dial/Dialled Pulse DP Dialing Plan DP Dialled Pulse DP Dialog Processor DP Differential Phase DP Digital Potentiometer DP Digital Press DP Distribution Point DP Diverse Protection DP Diversely Protected DP Document Parameters dp Dot Pitch (typically expressed in mm) DP Double Pole DP Draft Proposal DP Dual Processor DPA Demand Protocol Architecture (3COM) DPA Destination Physical Address DPA Destructive Physical Analysis DPA Dial Pulse Access DPA Dual Power Amplifier DPAC DATAPAC DPATH Data Path DPB Drive Parameter Block DPBX Digital Private Branch Exchange DPC Data Packet Collector DPC Data Processing Center DPC Deferred Procedure Call DPC Destination Point Code DPC Digital Port Card DPC Digital Private Circuits DPC Distributed Persistent Cache DPC Double Purpose Connector DPC Dynamic Power Control DPCA Defect Prevention and Corrective Action DPCC Dual Plane Combined Cabinet DPCC Dual Plane Combined Core DPCC Dual Plane Core Cabinet DPCM Differential Pulse Code Modulation DPCP DECnet Phase IV Control Protocol DPCTH Dynamic Power Control Threshold-High DPCTL Dynamic Power Control Threshold-Low DPD Differential Phase Detector DPD Display Digits DPDT Double-Pole Double-Throw DPE Data Processing Equipment DPE Direct Plate Exposure (Printing) DPE Distributed Processing Environment DPE Distributed Programming Environment DPE Dynamic Pool Extender DP-EX Data Port Extender DPI Digital Phone Interface dpi Dots Per Inch DPI Dots Per Inch DPIB Directed Call Pickup Billing Records DPKTGP D-Channel Packet Group DPL Descriptor Privilege Level DPL Digital PowerLine DPLL Digital Phase-Locked Loop DPLM Domestic Public Land Mobile DPLMRS Domestic Public Land Mobile Radio Service DPM Defects Per Million DPM Digital Phase Modulation DPM Documents Per Minute DPM Downtime Performance Measurement DPM Dynamic Power Management DPMC Dual Port Message Controller DPMI DOS Protected-Mode Interface DPMS Data Processing and Management System DPMS Display Power Management Signaling DPMS DOS Protected Mode Services DPN Data Packet Network DPN Digital Packet Network DPN Digital Path Not Provided message DPN Digital Path Not provided signal DPN Directed Call Pickup- Non Barge-in DPNACC Directed Call Pickup Non-Barge-In Access Code DPNB Directed Call Pickup Non-Barge-In Billing Records DPNS Digital Private Network Signaling DPNSS Digital Private Network Signalling System (BT) DPNX Directed Call Pickup Exempt DPO Data Path Object DPO Dial Pulse Originating DPP Data Processing Peripheral DPP Defect Prevention Process DPP Distributed Preplan DPP Distributed Processing Peripheral DPPS Data Packets Per Second DPPS Data Post-Processing System DPR Data Unit Profile DPR Detailed Privacy Recording DPR Digit PResent DPR Dual Port RAM DPRAM Dual Port Random Access Memory DPRG Data Population Rule Generation DPRI Delay Priority DPS Data Processing System DPS D-Channel Packet-Switched DPS Design and Prototyping Services DPS Display PostScript DPSK Differential Phase Shift Keying DPST Double-Pole Single-Throw DPT Dial Pulse Terminating DPT Different Premises Telephone DPT Drive Parameter Tracking DPTC Dual Processor Terminal Controller DPU Direct Pick-Up DPU Directed Call Pickup- Barge-in DPU Display Processing Unit DPUACC Directed Call Pickup Barge-In Access Code DPUB Directed Call Pickup Billing Records DPUIND Directed Call Pickup Barge-in Indication DPUN DPU Notification DPX Datapath Extension DQ Deluxe Queuing DQA Design Quality Assurance DQC Display Queued Calls DQD Directory Query Display DQDB Distributed Queue Double Bus DQDB Distributed Queue Dual Bus DQDB Distributed Queued Dual Bus DQDB Dual Queue Dual Bus DQE Detective Quantum Efficiency DQI Departmental Quality Index (ETSI) DQPSK Differential QuadraPhase Shift Keying DQPSK Differential Quadrature Phase-Shift Keying D-QPSK Differential Quaternary Phase-Shift Keying DQRUMA Distributed Queuing Request Update Multiple Access DQS Display Queue Status DQS Document Quality System DQT Define Quantization Table DQT Display Queue Threshold DR Data Rate DR Data Ready DR Deactivation Request DR Dead Reckoning position (ship-navigation) DR Debug Register DR Defect Report DR Delivery Report DR Derived Requirements DR Design Requirements DR Design Review DR Designated Receivers DR Diagnostic Request DR Digit Receiver DR Digital Radiology DR Digital Research DR Direct Route DR Direct Routed DR Directed Retry DR Disconnect Request DR Disconnect Request DR Discount Request DR Distinctive Ringing Dr Draht (Wire) DRA Digital Recorded Announcement DRA Distributed Restoration Algorithm DRA Dynamic Resource Allocation DRAM Digital Recorded Announcement Machine DRAM Digital Recorded Announcement Module DRAM Dynamic RAM DRAM Dynamic Random Access Memory DRAMC Dynamic Random-Access Memory Controller DRAW Direct Read After Write DRAW Direct Read After Write (Optical Disk) DRB Destination Route Builder DRC Data Recovery Center DRC Data Recovery Component DRC Design Rule Checking DRCC Dual Remote Cluster Controller DRCC2 Dual Remote Cluster Controller 2 DRCCI ISDN Dual Remote Cluster Controller DRCS Digital Radio Concentrator System DRCS Dynamically Redefinable Character Set DRCW Distinctive Ringing/Call Waiting DRCW Distinctive Ringing/Ringback for Call Waiting DRD Data Rule Distribution DRDA Distributed Relational Database Architecture DRE Directional Reservation Equipment DREO Defence Research Establishment Ottawa DREQ DMA Request DRES Data Route Expert System (Telecom and Bell Canada) DRF Data Recovery Field DRFM Digital Radio Frequency Module (Military Avionics) DRG Degrees, Radians, or Gradians DRG Developer Relations Group DRG Direction de la Réglementation Générale (F) DRI Defence Research Internet DRI Define Restart Interval DRI Digital Research Inc. DRI Dual Ring Interworking DRING Distinctive Ring DRIVE Dedicated Road Infrastructure for Vehicle safety in Europe DRJ Disengage Reject DRL Data Retrieval Language DRL Denied Roamer Log DRM Data Request Message DRM Distributed Recording Manager DRM Domain Resource Manager DRMS Dynamic Resource Management System DRO Destructive Read Operation DRO Destrutive Read-Out DRO Dielectric-Resonator Oscillator DROES Data Receive Only Earth Stations (satellite) DROP Drop DRP Directional Radiated Power DRP Distribution and Replication Protocol DRQ Data Request DRQ Disengage Request DRQ DMA Request DRRS Digital Radio Relay System DRS Data and Report System DRS Data and Reports System DRS Data Rate Selector DRS Data Relay Satellite DRS Data Retreival System DRS Delayed Release message DRS Delayed Release Signal DRS Digital Radio System DRS Digital Reference Sequence DRS Digital Reference Signal DRS Druckstation (Printer Station) DRS Dynamic Resource Scheduling DRSC Dedicated Short Range Communications DRSC Dual Remote Switching Center DRSCI ISDN Dual Remote Switching Center DRT Data Recording Terminal DRT Destination Route DRT Diagnostic Rhyme Test DRT Digit Reception Test DRTM Design Ready To Manufacture DRTS Distributed Real-Time System DRTU Digital Remote Test Unit DRU Deliverable Release Unit DRU Delivery Release Unit DRU Design Releasable Unit DRU Design Release Unit DRU Development Release Unit DRU DualMode Radio Unit DRU Dual-mode Radio Unit DRUID Demonstrational Rapid User Interface Development DRUM Design Requirements Utility- Multisite DRUM DualMode Radio Unit Monitor DRV Device Driver File DRW Micrographx Designer/Draw File DRX Discontinuous (radio) Reception (mechanism) DRX Discontinuous Reception DRxI Definite Response x indicator (SNA) DS Dansk Standardiseringsraad DS Danske Standardiseringsrad (DK) DS Data Schema DS Data Segment DS Data Set DS Data Signaling DS Data Store DS Data Stream(ing) DS Data Strobe DS DDOC Section: Data Schema DS DDOC Started DS Decode and Select DS Default Service DS Define Storage DS Delivery System DS Denotational Semantics DS Design Specification DS Design Started DS Diagnostic Server DS Dialup Switch DS Digit Select DS Digit String DS Digital Section DS Digital Services DS Digital Signal DS Digital Signaling DS Digital Switch DS Digital System DS Direct Sequence DS Direct Sequence DS Direct Signaling DS Directory Service(s) DS Dispersion Shifted DS DiSplay DS Distinguishing Sequence DS Distributed Single-Layer DS Distribution Session DS Distribution System DS Document Storage DS Double Side DS Double Sided DS Downstream DS Drive Select DS Duplex Signaling DS Primary Rate Access Digital Section DS II Data Syntax according to CCITT Recommendation T.101, Annex C DS III Data Syntax according to CCITT Recommendation T.101, Annex D DS/DD Double-Sided Double-Density DS/HD Double-Sided High-Density DS/SS Direct Sequence Spread Spectrum DS0 Digital Signal Level 0 DS0 Digital Signal, level 0 DS-0 Digital Signal Level 0 DS0A Digital Signal Level 0A DS-0A Digital Signal Level 0A DS0CTA DS0 Channel Termination for Nailed-Up Analog Service DS0CTB DS0 Channel Terminations for B-Channels DS0CTD DS0 Channel Termination for D-Channel DS0CTD2 DS0 Channel Termination for D-Channel Backup (D2) DS0DP DS0 Dataport DS0-DP DS0-Dataport DS1 Digital Signal Level 1 DS-1 Digital Signal Level 1 DS1 OE DS1 Office Equipment Number DS1BIF DS1 Bus Interface DS1C Digital Signal Level 1 Concatenated DS-1C Digital Signal Level 1 Concatenated DS1GSP DS1 Group Search Priority DS1PORTS DS1 Ports DS2 Digital Signal Level 2 DS-2 Digital Signal Level 2 DS3 Digital Signal Level 3 DS-3 Digital Signal Level 3 DS-3C Digital Signal Level 3 Concatenated DS9 Default Service in NA009 DSA Data Set Adapter DSA Dead System Alarm DSA Dell SCSI Array DSA Destination Subarea DSA Dial Service Administration DSA Dial Service Analysis DSA Dial Service Assistance DSA Dial Service Auxiliary DSA Digital Serving Area DSA Digital Signature Algorithm DSA Digital Storage Architecture DSA Digital Subtraction Angiography (Med.) DSA Directory Server Agent DSA Directory Service Agent DSA Directory System Agent DSA Distributed System Architecture (Bull) DSA Distributed Systems Architecture DSA Dynamic Slot Assignment DSAA DECT Standard Authentication Algorithm DSAC Dial Service Administration Center DSAC Distributed Systems Administrations and Control (Bull) DSAC DMS Support and Change DSAF Destination Subarea Field DSAP Data Supervisor Area Pointer DSAP Destination Service(s) Access Point DSAPI Destination Service Access Point Identifier DSAR Data System Address Register DSAU DS1 Signal Access Unit DSB Digital Sound Broadcasting DSB Double Sideband DSB TC Database for Testcases DSBAM Double Sideband Amplitude Modulation DSBEC Double Sideband, Emitted Carrier DSBLD Disabled DSBRC Double Sideband, Reduced Carrier DSBS Digital Sound Broadcasting System DSBSC Double Sideband, Suppressed Carrier DSB-SC Double SideBand Suppressed Carrier DSBTC Double Sideband, Transmitted Carrier DSC Data Storage Controller dsc Declaration Subset Close DSC DECT Standard Cipher DSC Digital Selective Calling DSC Digital Spectrum Compatible DSC Digital Subscriber Carrier (system) (ISDN) DSC Digital Subscriber Controller (ISDN) DSC Digital Switch Corporation DSC Direct Satellite Communications DSC District Switching Centre DSC Document Structuring Conventions DSC Dynamic Switch Compiler DSC The Discovery Channel DS-CDMA Direct Sequence CDMA DSCH Dual Service Channel DSCWID Deluxe Spontaneous Call Waiting Identification DSCWID Spontaneous Call Waiting Identification with Disposition DSD Data Structure Definition (CCA/VTS) DSD Development Strategy Document DSD Digital Switch Division DSD Direct Service(s) Dialing DSDB Debit Service Database DSDC Direct Service Dialing Capability DSDC Direct Service(s) Dialing Capabilities DSDD Double-Sided Double-Density (Disk) DSDN Designated Secondary Directory Number DSDS Dataphone Switched Digital Service DSDT Dynamic Structured Data Transfer DSE Data Switching Equipment DSE Data Switching Exchange DSE Dialogue Service Element DSE Digital Switching Element DSE Distributed Single-Layer Embedded DSE Distributed Switching Evolution DSE Distributed System Environment (Honeywell) DSE Document Search Engine DSE DSA-Specific Entry DSEA Display Station Emulation Adapter DSEE Domain Software Engineering Environment DSEQ Descending Sequence DSET Display Set DSF Dispersion-Shifted Fiber DSFT Designing Systems For Testability DSG Distributed Systems Generator DSGW Double Sided Glue and Wave DSH Dual Seizure Handling DSHD Double Sided High Density DSI Data Set Identifier DSI Data Set Interface DSI Data Storage Interrupt DSI Data Stream Interface DSI Detailed Spectrum Investigation DSI Digital Signal Interface DSI Digital Speech Interpolation DSI Disable Interrupts DSI Dynamic Skeleton Interface DSIC Digital Subscriber Interface Circuit DSIP Digital Set Interface Processor DSIS Distributed Support Information Standards (group) DSISR DSI Exception Source Register DSL Digital Simulation Language DSL Digital Subscriber Line DSL Digital Subscriber Loop DSL Distributed Service Logic DSL Distribution Service Level (SNA) DSLAM Digital Subscriber Line Access Multiplexer DSLC Data Subscriber Loop Carrier DSLIC Digital Subscriber Line Interface Circuit DSLT Digital Subscriber Line Terminal DSM Digital Storage Media DSM Digital Storage Medium DSM Direct Signal Monitoring DSM Direct Synthesis Module DSM Directory Service Migration DSM Distributed Software Manager DSM Distributed Systems Management (Tandem) DSMA Data Sense Multiple Access DSMA Digital Sense Multiple Access DSMA/CD Digital-Sense Multiple Access with Collision Detection DSM-CC Digital Storage Media Command and Control DSM-CC Digital Stored Media Command and Control DSN Data Set Name DSN Data Source Name DSN Debit Service Number DSN Defense Switched Network DSN Deliver Single Number DSN Digital Switching Network DSN Disk Serial Number DSN Distributed System Network (Hewlett Packard Inc.) DSN Distributed System Network (HP) DSN Dual Shelf Network DSN MDII: No Start Dial- Delay Dial, Steady On-Hook DSNE Double Shelf Network Equipment DSNE Dual Shelf Network Equipment DSNX Distributed Systems Node Executive (APPN-IBM) dso Declaration Subset Open DSO Development Support Overhead DSO Digital Sampling Oscilloscope DSO Digital Storage Oscilloscope DSO Dual In-Line Small Outline DSOC Decode and Select/Operand Fetch Cycle DSOM Distributed System Object Model DSP Data Service Provider DSP Device Stop DSP Digital Signal Processing DSP Digital Signal Processor DSP Direction du Service Public (F) DSP Directory Service Protocol DSP Directory System Protocol (OSI) DSP Display DSP Display Station Protocol DSP Display Translation/Routing Information DSP Domain Specific Part (OSI-NL) DSP Downstream Processor DSP Drive Slave Present DSPAN DataSpan DSPC Display Control DSPDA DSP Design Automation DSPERM Permanent Data Store DSPI DSP Island DSPM Digital Signal Processing Module DSPM Direct Subscription Parameter Management DSPR DSP Resource Module DSPROT Protected Data Store DSPU Downstream Physical Unit DSQD Double Sided Quad Density DSR Data Set Ready (Signal) DSR Data Signalling Rate DSR Data Synchronization Register DSR Dead System Recovery DSR Device Status Report DSR Digital Satellite Radio DSR Digital Subtraction Radiology (Medical) DSR Double Sided Reflow DSRI Digital Standard Relational Interface DSRR Digital Short Range Radio DSRTP Digital Services Remote Test Port DSRV Default Service DSS Data Storage System DSS Datensichtstation (Data Display Terminal) DSS Decision Support Services DSS Decision Support System DSS Dedicated Servo Surface DSS Device Support System DSS Dial Selective Signaling DSS Digital Satellite Service DSS Digital Satellite System DSS Digital Signalling Systems DSS Digital Signature Standard DSS Digital Subscriber Signalling DSS Digital Subscriber Signalling System DSS Digital Switching Subsystem DSS Digital Switching System DSS Direct Station Select DSS Direct Station Selection DSS Directory and Security Server DSS Directory and Security Services DSS Diskless Support Services DSS Distributed Sample Scrambling DSS Domain SAP/RIP Server DSS Dynamic Structure Sizing DSS1 Digital Signalling System number one (ISDN access protocol) DSS1 Digital Subscriber Signaling System No. 1 DSS1+ enhanced DSS1 DSS2 Digital Signalling System number 2 (B-ISDN access protocol) DSS2 Digital Subscriber Signaling System No. 2 DSSA DECT Standard Authentication Algorithm DSSC Double Sideband Suppressed Carrier DSSD Double-Sided Single-Density (Disk) DS-SMF Dispersion Shifted Single-Mode Fiber DSSS Direct Sequence Spread Spectrum DS-SS Direct-Sequence Spread-Spectrum DSSSL Document Style, Semantics, and Specification Language DS-SSMA Direct Sequence-Spread Spectrum Multiple Access DST Daylight Saving Time DST Destination DST DeSTination reference DST Device Start DSt Diensstelle (Service Center) DST Diode-Split Transformer DST Dispersion Supported Transmission DST Distributed Smalltalk DST Double Super Twisted DST Double-Layer Supertwist D-STB Detailed Simulation Testbed DS-TDMA Data Syntax according to CCITT Recommendation T.101, Annex B DSTE Digital Subscriber Terminal Equipment DSTEMP Temporary Data Store DSTN Double Supertwisted Nematic DSTN Dual Supertwist Nematic DSTS Digital Services Test System (CSC-ATT) DSU Data Service Unit DSU Data Service Unit (Bell) DSU Data Switching Unit DSU Digital Service(s) Unit DSU Disk Storage Unit DSU Distribution Service Unit (SNA) DSU DMS Software Update Controller DSV Data Steal into Voice DSVD Digital Simultaneous Voice and Data DSVT Digital Secure Voice Telephone DSX Digital Signal Cross-connect DSX-1 DSX for DS1 Facilities DT DaTa DT Data Terminal DT Data Terminal equipment DT Data Transfer DT Data Transmission DT Data Tuple DT DDOC Section: Design Test Plan DT Defer Threshold DT Definition List Term (HTML tag) DT Delayed Transmission DT DeleTe DT Denied Termination DT Design Test DT Designer Test DT Designer Tested DT Designer Testing Completed DT Deutsche Telekom (German Telecom) DT Dial Tone DT Digital Terminal DT Digitalk DT Digitone DT Digroup Terminal DT Display Text DT Distant Terminal DT Draw Text DT&M Desktop Technology & Management DT1 Data Form 1 DT2 Data Form 2 DTA DaTA DTA Data Transmission Abort DTA Desktop Assistant DTA Detailed Traffic Analysis DTA Digital Terminals and Access DTA Digital Test Access DTA Digitally Terminated Analog DTA Disk Transfer Area DTA Distributable Technical Audit DTA Distribution Terminal Assembly DTAC Digital Test Access Connector DTAC Digital Test Access Controller DTACK Data Transfer ACKnowledge DTAD Digital Telephone Answering Device DTAG Deutsche Telekom AG (German Telekom AG) (former DBPT) DTAI ISDN Digital Trunk Array DTAL Digital Test Access Link DTAM Document Transfer and Manipulation DTAM Document Transfer And Manipulation (CCITT T.431/433) DTAM Document Transfer Application Management DTAM Document Transfer, Access and Manipulation DTAO Desk-Top/Audio-Only DTAP Direct Transfer Application Part DTAU Digital Test Access Unit DTB Data Transfer Bus DTBI Denied Toll Break-In DTBS Distributed Time-Bounded Services DTC Data Test Center DTC Datacommunication and Terminal Controller DTC Desk-Top Communication DTC Desktop Conferencing DTC Digital Traffic Channel DTC Digital Transmit Command DTC Digital Trunk Controller DTC Direct-To-Child DTC7 CCS7 Digital Trunk Controller DTCA Default Throughput Class Assignment DTCI ISDN Digital Trunk Controller DTCO Digital Trunk Controller Offshore DTCOi Digital Trunk Controller Offshore (ISDN) DTCT DMS Translations Capture Tool DTD Dial Tone Delay DTD Document Type Decalaration DTD Document Type Definition DTDMA Distributed Time Division Multiple Access DTDR Dial Tone Delay Recorder DTDR Dial Tone Delay Recording DTDS Disaster Tolerant Disk System DTDS+ Disaster Tolerant Disk System Plus DTE Compatibility with DTE Built to 1980, 1984, or 1988 ITU-T X.25 DTE Data Terminal Equipment DTE Data Terminating Equipment DTE Digital Terminal Equipment DTE Digital Trunk Equipment DTEI Dynamic TEI DTEI ISDN Digital Trunk Equipment DTF Data Transfer Facility (DECnet-SNA) DTF Data Transmission Failure DTF Dial Tone First DTF Digital Transmission Facility DTFI Digital Transmission Facility Interface DTH Data Test Head DTH Digital Test Head DTH Direct To Home DTH Direct-To-Home DTI Data Transfer Interface DTI Data Trunk Interface DTI Defect Type Indication DTI Department of Trade and Industry (UK) DTI Digital Trunk Interface DTI Distortion Transmission Impairment DT-I ISDN Denied Termination DTIE Display Text Information Element DTIM Delivery TIM dtksh Desktop Korn Shell DTL Designated Transit List DTL Digital Tanlock DTL Digital Trunk Link DTL Diode-Transistor Logic DTLB Data Translation Lookaside Buffer DTLS Digital Television Lightwave System DTM Denied Termination DtM Design to Manufacture DTM Design To Market DTM Digital Terrain Model DTM Digital Test Module DTM Digital Trunk Module DTM Distributed Transaction Monitor DTM DRAM Trunk Module DTM Dynamic Traffic Management DTMEPI Denied Termination Except Priority Incoming DTMF Digitone Multifrequency DTMF Dual-Tone Multifrequency DTMFR DTMF Receiver DTN Deflected-to Number DTN Deliver Two Numbers DTN Digitone Dial DTN Diverted-to Number DTO Decentralized Toll Office DTO Desktop Object D-TO-A Digital to Analogue dtor Destructor DTP Data Tape Punch DTP Data Transfer Process DTP Data Transport Protocol DTP Designer Test Process DTP Designer Testplan DTP Desktop Publishing DTP Distributed Transaction Processing (OSI) DTPM Data Transport Protocol Machine DTR Data Terminal Ready (modem signal) DTR Data Transfer Requested DTR Data Transmission DTR Digital Tone Receiver DTR Digitone Receiver DTR Distributor Session DTR Distributor Transactor DTR Down-Time Ratio DTR Draft ETSI Technical Report DTR Draft Technical Report (IEC, ETSI) DTRC Data Transmitter Receiver Chip DTRC DS-512 Transmit/Receive Controller DTRE DTMF Recognition DTS Data Tandem Switch DTS Data Transport System DTS Decoding Time Stamp DTS Dial Tone Speed DTS Digital Tandem Switch DTS Digital Terminal Simulator DTS Digital Termination System DTS Digital Test Sequence DTS Digital Theater Surround DTS Digital Transmission System DTS Distributed Time Service DTS Document Translation System DTSP Default Terminal Service Profile DTSP Duplicate Translation Signalling Point DTSR Dial Tone Speed Recording DTTB Digital Television Terrestrial Broadcasting DTU Data Terminal Unit DTU Data Terminating Unit DTU Data Transfer Unit DTU Digital Test Unit DTV Desktop Video DTV Digital Television DTW Dynamic Time Warping dtwm Desktop Window Manager DTWX Dial TeletypeWriter eXchange DTWX Dial Teletypewriter Exchange Service DTX Data Transmission DTX Discontinuous Transmission (mechanism) DU Data Unit DU Dimensioning Unit DUA Device Under Analysis DUA Directory User Agent DUAE Directory User Agent Entity DUAL Distributed Update Algorithm DUAP Data User Area Pointer DUAQ Dial-Up Autoquote DUART Dual Universal Asynchronous Receiver/Transmitter DUC Data Unit Control DUC Dual-Access Utility Circuit DUD Dollar Underscore Dollar DUE Detection of Unauthorized Equipment DUF Dispersion-Unshifted Single-Mode Fiber DUITS Digital, Ubiquitous, Interoperable, Transparent, and Secure DUKPT Derived User Key Per Transaction DUN Dial-Up Networking DUP Data User Part DUP Default User Profile DUP Destination User Prompter DUP Duplicate DUS Data User Stations DUSCC Dual Universal Serial Communications Controller DUT Device Under Test DUTL DMS Universal Transport Layer DUUS Delivery of User-to-User Signaling DUV Data Under Voice DUV Deep Ultraviolet DUX Digital Unix DV DataVision DV Distance Vector DVA Digital Video Architecture DVAP Design Verification and Acceptance Plan DVB Digital Video Broadcasting DVB Direct Video Broadcast DVB DOS Volume Boot Sector DVB-C Digital Video Broadcasting-Cable DVB-S Digital Video Broadcasting-Satellite DVBST Direct View Bistable Storage Tube DVB-T Digital Video Broadcasting-Terrestrial DVC Desktop Videoconferencing DVC Digital Video Compression DVC Digital Videocassette DVCC Digital Verification Color Code DVD Digital Versatile Disk DVD Digital Video Disk DVDR Digital Video Disk Recorder DVD-R Digital Video Disk-Recordable DVE Digital Video Effects D-VHS Data VHS D-VHS Digital Data VHS DVHT Digital Video Home Terminal DVI Data and Voice Interface DVI Data-Voice Interleaved DVI Diagonal Viewable Image DVI Diagonal Viewing Image DVI Digital Video Interactive DVI Digital Video Interactive system DVI Digital Video Interface DVI Digital Voice Interpolation DVLN Digital Video Learning Network DVM Data Voice Multiplexor DVM Digital Volt-Meter DVM Document View/Markup DVMA Direct Virtual Memory Access DVMRP Distance Vector Multicast Routing Protocol DVM-RP Distance Vector Multicast Routing Protocol DVOM Digital Volt-Ohm Meter DVS Data Voice System DVS Datenvermittlungssystem DVSR Digital Video Silicon Recorder (Mass-Memory) DVST Direct-View Storage Tube DVST Direct-View Storage Tube DVS-TP Data Voice System- Transaction Processor DVT Designer Verification and Testing DVT Digital Video Terminal DVTR Digital Video Tape Recorder DVTS Digital Video Test Set DVX Digital Voice Exchange DW Data Word DW Deep Water DW Device Wait DW Double Word dw DWORD (unsigned long) DWARF Debug With Arbitrary Record Format DWB Designer's Workbench DWBS DEFINITY Wireless Business System DWDM Dense Wavelength Division Multiplex DWDM Dense Wavelength Division Multiplexer DWDM Dense Wavelength Division Multiplexing D-WDM Dense-Wavelength Division Multiplexer DWF Drawing Web Format DWF Dual-Window Fibre DWIM Do What I Mean DWMT Discrete Wavelet Multitone DWN DoWN DWS Dialable Wideband Service DWV Data With Voice DX Data register DX Destination Switch Complex DX Distance DX Duplex DX DupleX DX Duplex Signaling DXB Drawing Interchange Binary DXC Digital Cross-Connect DXCS Digital Cross Connect System DXE either a Data Terminal Equipment or a Data Circuit terminating Equipment DXF Data Exchange Format DXF Drawing Exchange Format DXF Drawing Interchange Format DXFR Data Transfer DXI Data Exchange Interface DXL DOORS Extension Language DXS Data eXchange System dyn Dynamic Links DYN Dynamic Links Without Packet Link DYNPAL Dynamic Links With Packet Links DYP Directory Yellow Pages DZ ISO country code for People's Democratic Republic of Algeria
e earth wire
E East
E Echo
E Electrical
e emf (when used in conjunction with a signal generator)
E Enable
E Energy
E English
E Erlang
E Error-Detected
E Essential user facility
E Exception
E Exchange
E Expedited (X)
E Exponent
E Extended (link)
E Extension
E Irradiance
E&E Environment, Health, Safety, Security, and Business Ethics
E&M Ear and Mouth
E&M rEceive and transMit leads
E&S Evans and Sutherland
e.r.p. effective radiated power
E/O Electrical-to-Optical
E/O Electro-Optical
E/S Earth Station
E/U-MUX switch between E-type and U-type MUltipleXes
E2E End To End
E3C European Coordination Committee for Certification (ECCC)
E800 Enhanced 800 Service
E911 Enhanced 911 Emergency Service
EA Address Field Extension Bit
EA Early Assignment
EA Effective Address
EA Electroabsorption
EA Emergency Action
EA Emergency Announcement
EA Equal Access
EA Erase in Area
EA Evaluation Authority
EA Expedited Acknowledgement
EA Expedited data Acknowledgement
EA Expedited Data Acknowledgement Message
EA Extended Address
EA Extended Address field bit
EA Extended Attribute(s)
EA External Alarms
EA1 Emergency Announcement #1
EA2 Emergency Announcement #2
EAB Enterprise Application Builder
EAB ESPRIT Advisory Board
EABS Exchange Alternate Billing Service
EABS Exchange Alternate Billing System
EAC Effective-Address Calculation
EAC Engineering Accreditation Commission
EAC Engineering Action Center
EACC East Asian Character Code
EACEM European Association of Consumer Electronics Manufacturers
EACK Extended Acknowledgement
EACSO East Africa Common Services Organization
EAD Engineering and Administration
EAD Expert Agent Distribution
EADA Engineering and Administrative Data Acquisition
EADAS Engineering and Administrative Data Acquisition System
EADAS/NM Engineering and Administrative Data Acquisition System/Network Management
E-ADPCM Embedded Adaptive Differential Pulse Code Modulation
EAE Equipment Application Engineer
EAE3 Efficient Algorithms Executing Every Aspect of Engineering for
Equipment Application Engineers
EAEO Equal Access End Office
EAEO Exchange Access End Office
EAF Effective-Address Fetching
EAFGD Equal Access Feature Group D
EAI Emergency Action Interface
EAI Emergency Administrative Interface
EAIEC Equal Access Interexchange Carrier
EAILU Enhanced Asynchronous Interface Line Unit
EAM Electrical Accounting Machine
EAM Electronic Accounting Machine
EAM Extended Answer Message
EAMA Enhanced Automatic Message Accounting
EAMF Equal Access Multifrequency
EAMPS Expanded AMPS
EAN European Article Number (bar code)
EANT Equal Access Network Trunk
EAO Electronic Access Ordering
EAOA Equal Access/Operator Assist team
EAOS Equal Access and Operator Services
EAOSS Equal Access Operator Services Signaling
EAOSS Equal Access Operator Signaling System
EAOSS Exchange Access Operator Services System
EAP Emergency Action Program
EAP Employee Assistance Program
EAP Equal Access Plan
EAP Extended Access Paging
EAP Extended Access Paging
EAP Extensible Authentication Protocol
EAP External Address Plan
EAPROM Electrically Alterable Programmable Read-Only Memory
EAR Early Access Release
EAR External Access Register
EARB Enhanced Adaptive Rate-Based
EARB Extended Adaptive Rate-Based
EARN European Academic and Research Network
EAROM Electrically Alterable Read-Only Memory
EAs Einzelanschluss (Single Line) (analogue line, single line)
EAS Emergency Alert System
EAS Enhanced Alarm System
EAS Exchange Access Signaling
EAS Exchange Access System
EAS Expert Agent Selection
EAS Extended Area Service
EAS External Architecture Specification
EAsKt Einzelanschlusskonzentrator (Single Terminal Concentrator)
EASP Equal Access Switching Point
EAT EDNA Administration Tool
EAT Emergency Administrative Terminal
EATMS Electro-Acoustic Transmission Measuring System
EATS Equal Access Traffic Separation
EAX Electronic Automatic Exchange
EAX Extended Accumulator Register
eaz Endgeraeteauswahlziffer (Terminal Equipment Selection Digits)
EB Electronic Bonding
EB End of Block
EB Exabyte
EB External Bit
EB&F Equipment Blockages and Failures
EB/TA Electronic Bonding for Trouble Administration
EBAF Enhanced Bellcore AMA Format
EBAF Expanded Bellore AMA Format
EBAF Extended Bellcore AMA Format
E-BAMA Enhanced Beacon Assisted Multiple Access
EBAS Enhanced Billing and Access Services
EBB Elektronische Bild Bearbeitung
EBBL Evolution Brown Bag Lunch
EBC Egress Busy Crankback message
EBC European Business Committee
E-BCCH Extended Broadcast Control Channel
EBCD Enhanced Booked Call Database
EBCDIC Extended Binary-Coded Decimal Interchange Code
EBCR Enhanced Busy Call Return
EBE External Behaviorial Expression
EBER Equivalent Binary Error Rate
EBES Electron Beam Exposure System
EBGP External BGP
EBHC Equated Busy Hour Calls
EBI End Bracket Indicator (SNA)
EBI Even Bit Inversion
EBIC Electron Beam Induced Current
EBIT Electronic Bonding Implementation Team
EBIU End of BIU
EBL Electron Beam Lithography
EBM Editing Boundary Mode
EBM Error Correction and Burst Memory Controller
EBNF Extended Backus-Naur Form
EBO Executive Busy Override
EBOBAS Executive Busy Override Basic
EBOEBX Executive Busy Override Exempt
EBOF Extension Block Object Framework
EBOM Executive Busy Override on MADN
EBONE European IP Backbone
EBOT Executive Busy Override Tone
EBOX Executive Busy Overide Exempt
EBP Extended Base Pointer
EBR Electron-Beam Recording
EBS Electron Bombarded Silicon
EBS Electronic Business Service
EBS Electronic Business Set
EBS Emergency Broadcast System
EBS Engineering and Business Systems Inc.
EBSG Elementary Basic Service Group
EBSS European Binary Signalling System (1200 bit/s)
EBTN European Backbone Telecommunications Network
EBU European Broadcasting Union
EBV Elektronische Bild Verarbeitung
EBW Effective Bandwidth
EBX Executive Busy Override Exempted
EBX Extended Base Register
EC Earth Calling
EC Echo Canceler
EC Echo Cancellation
EC Echo Canceller
EC Echo Check
EC Echo Controller
EC E-Core
EC Edition Code
EC Electrical Communication (periodical)
EC Electronic Commerce
EC Engineering Change
EC Engineering Complaint
EC Environmental Compatibility
EC Equipment Controller
EC Equivalent Capacity
EC Erase Character
EC Error Code
EC Error Correction
EC Escape Character
EC European Commission (new name for CEC)
EC European Community (now EU)
EC Exchange Carrier
EC Exchange Classification
EC Extended Control
EC ISO country code for Republic of Ecuador
Ec/No Ratio of energy per modulating bit to the noise spectral density
ECA Echo Suppression Allowed
ECA Element Control Application
ECA Emergency Changeover Acknowledgement message
ECA Engineering Change Announcement
ECA Exchange Carrier Association
ECAC European Civial Aviation Conference
ECAN Echo Cancellation
ECAN Echo Canceller
ECATI European Conference of Associations of Telecommunications Industries
ECB Electrically Controlled Birefringence
ECB Electronic Code Book
ECB Event Control Block
ECB Extension Control Block
ECBF European Citizen's Band Federation
ECBM Echo Canceller Burst Mode
ECC Echo Canceller Control
ECC Electrical Cross-Connect
ECC Electronic Common Control
ECC Elliptic Curve Cryptosystem
ECC Embedded Communication Channel
ECC Embedded Communications Channel
ECC Embedded Control Channel
ECC Error Checking and Correction
ECC Error Control Code
ECC Error Correcting Code
ECC Error Correcting Code
ECC Error Correction Checking
ECC Error Correction Code
ECC Error-Correction Coding
ECC Expanded Community Calling
ECCB Extended Call Condense Block
ECCC European Coordination Committee for Certification
ECCM Electronic Counter-Counter-Measures (Military)
ECCP Error Correction Coprocessor
ECCS Economic CCS
ECCV Enhanced Charge Card Validation
ECD Echo Suppression Denied
ECD Enhanced Call Disposition
ECD Enhanced Compact Disk
ECD Equipment Configuration Data
ECD Equipment Configuration Database
ECD Eraseable Compact Disk
ECD Error Correction Device
ECDB Electronic Chart DataBase (ECDIS)
ECDIE Electronic Chart DIsplay Equipment
ECDIS Electronic Chart DIsplay System (ship-navigation)
ECDO Electronic Community Dial Office
ECDR Expanded Call Detail Record
ECE Echo Control Equipment
ECE Economic Commission for Europe
ECF Echo Control Factor
ECF Enhanced Call Forward
ECF Enhanced Connectivity Facility (SNA)
ECFRN European Consultative Forum for Research Networking
ECG Electro Cardio-Gram (Medical)
ECH Echo Canceled Hybrid
ECH Echo Canceler with Hybrid
ECH Echo Cancellation
ECH Erase Character
ECHO European Commission Host Organization
ECHS Extended CHS
ECI Echo Control Information
ECI Egress Context Identifier
ECI End Chain Indicator (SNA)
ECI Equipment Catalogue Identifier
ECI Explicit Congestion Indication
ECI Extended Call Interface
ECIC Electronic Communications Implementation Committee
ECIC Electronic Communications Implementors Committee
ECIC Equal-access Carrier Identification Code
ECIF Electronic Communications Implementation Forum
ECIS Embedded Common Channel Interoffice Signaling
ECISS European Committee on Iron and Steel Standardization
ECIT European Committee for Information Technology
ECITC European Committee for Information Technology Testing and Certification
ECJ European Court of Justice
E-CKEY Encrypted E-KEY
ECKO Eddy-Current-Killed Oscillator
ECL Effective Code Length
ECL Emitter-Coupled Logic
ECLT External Code Linking Toolkit
ECM Coordination Management
ECM Electronic Cipher Machine
ECM Electronic Contrast Modulation (Electronic Imaging)
ECM Electronic Counter-Measures (Military)
ECM Emergency Changeover Message
ECM Engineering Change Memorandum
ECM Entitlement Control Message
ECM Error Control Mode
ECM Error Correction Mode (facsimile)
ECM Extended Call Management
ECMA European Computer Manufacturers' Association
ECMA TC 32 Communication, Networks and Systems Interconnection
ECMS Extended Change Management System
ECN Engineering Change Notice
ECN Engineering Change Notification
ECN ERMES Code Number
ECN Explicit Congestion Notification
ECO Electron Coupled Oscillator
ECO Electronic Central Office
ECO Emergency Changeover Order message
ECO Emergency Cutoff
ECO Engineering Change Order
ECO Engineering Control Office
ECOM Electronic Computer Originated Mail
ECOOP European Conference on Object-Oriented Programming
ECORE Enhanced Core
ECOS End-to-End Class of Service
ECOSOC ECOnomic and SOcial Committee
ECP Encryption Control Protocol
ECP Engineering Change Proposal
ECP Enhanced Capabilities Port
ECP European Common Proposal
ECP Executive Cellular Processor
ECP Executive Control Program
ECP Extended Capabilities Port
ECPA Electronic Communications Privacy Act
ECPC Executive Cellular Processor Complex
ECR Electronic Cash Register
ECR Explicit Cell Rate
ECRB Executive Change Review Board
ECREEA European Confederation of Radio and Electronic Equipment Associations
ECRM Echo Cancellation Resource Module
ECRP Earcap Reference Point
ECRTSIM Enhanced CRTSIM
ECS Electronic Commerce Services
ECS Encryption Control Signal
ECS Enterprise Communications Server
ECS Entity Coordinate System
ECS Entrance Criteria Screener
ECS Entropy-Coded Segment
ECS Environmental Control System
ECS European Communications Satellite
ECSA European Computing Services Association
ECSA Exchange Carrier Standards Association
ECSA Exchange Carrier Standards Association (USA)
ECSDS Enterprise Computing Systems Data Systems
ECT Early Cut-Through
ECT Explicit Call Transfer (supplementary service)
ECTEL European Conference of Telecommunications and Professional Electronic Industries (ES)
ECTEL European Telecommunication and Professional Electronics Industry
ECTF Enterprise Computer Telephony Forum
ECTP Ethernet Configuration Test Protocol
ECTRA European Committee for Telecommunications Regulatory Affairs
ECTS Echo Canceller Testing System
ECTS ENET Integrity Check Traffic Simulator
ECTUA European Council of Telecommunications User Associations
ECU EISA Configuration Utility
ECU Electronic Control Unit
ECU Environmental Control Unit
ECU European Currency Unit
ECU European Currency Unit
ECW Emergency Calls in Wireless
ECW Even Control Word
ECX Extended Count Register
ED Edit
ED Editing
ED Electronic Design (periodical)
ED End Delimiter
ED End Designation
ED End of Data
ED Ending Delimiter
ED Energy Dispersal
ED ENVY/Developer
ED Erase in Display
ED Error Detection
ED EWOS Document
ED Expedited Data (EX)
ED Extra-High Density
ED&C Error Detection and Correction
ED/ECC Error Detection and Error Correction Code
EDA Efficient Defect Analyzer
EDA Electronic Design Automation
EDA Electronic Design Automation (CeBIT)
EDAC Error Detection and Correction
EDAP Extended Data Availability and Protection
EDB Embedded Database
EDB ESTELLE Debugger
EDB Exchange Database
EDBA Event-Driven Billing Architecture
EDC Error Detecting Code
EDC Error Detection and Correction
EDC Error Detection Code
EDC Export Development Corporation
EDCH Enhanced D-Channel Handler
EDCP Event Driven Call Processing
EDD Earliest Due Date
EDD Electronic Document Delivery
EDD Electronic Document Distribution (DISOSS)
EDD Element Definition Document
EDD Envelope Delay Distortion
EDD Equipment Data Dump
EDDI Extended Disk Driver Interface
EDDS Enhanced Dynamic Data Sync
EDE Encrypt-Decrypt-Encrypt
EDF Earliest Deadline First
EDF Erbium-Doped Fiber
EDF European Development Fund
EDFA Erbium-Doped Fiber Amplifier
EDFFA Erbium-Doped Fluoride Fiber Amplifier
EDFG Edge Device Functional Group
EDFP Event Driven Feature Processing
EDGE Enhanced Data Rates for GSM Evolution
EDH Electronic Data Handling
EDH Electronic Document Handling
EDI Electroni Document Interchange
EDI Electronic Data Interchange
EDI Enciphered Data Indicator (SNA)
EDI Extended Destination Index Register
EDIF Electronic Design Interchange Format
EDIF Electronic Design Interchange Format (CAD/CAE)
EDIFACT Electronic Data Interchange For Administration, Commerce and Transport
EDIFICE EDI Forum for the Electronics Industry
EDIM Electronic Data Interchange Message
EDIMS Electronic Data Interchange Messaging System
EDIN Electronic Data Interchange Notification
EDIP Electronic Document Image Processing
EDIT Error Deletion by Iterative Transmission
EDL Edit Decision List
EDL Encapsulator Description Language
EDM Embedded Delta Modulation
EDM Employee Development Model
EDM Enterprise Desktop Manager
EDMX Enhanced Data Message Switch
EDN EDN Magazine (periodical)
EDNA EKTS Display With No Alerting
EDNA Environment Distribution Network Administration
EDNR Emergency Directory Number Route
EDNR Emergency Directory Number Routing
EDNR Emergency Dynamic Number Routing
EDNS Enterprise-Defined Network Services
EDO Extended Data Out
EDOA Ermium-Doped Optical Amplifier
EDORAM Extended Data Out RAM
EDOSRAM Extended Data Out SRAM
EDOVRAM Extended Data Out VRAM
EDP Electronic Data Processing
EDP Encrypted Data Processor
EDP Enhanced Datagram Protocol
EDP Event Detection Point
EDP Extended Datagram Protocol
EDPE Electronic Data Processing Equipment
EDPM Electronic Data Processing Machine
EDP-N Event Detection Point- Notification
EDP-R Event Detection Point- Request
EDR Early Developer Release
EDR Engineering Data Reporter
EDRAM Enhanced Digital Recorded Announcement Machine
E-DRAM Enhanced DRAM
EDS Electronic Data Switching system
EDS Electronic Data Systems
EDS Electronic Directory Service
EDS Equipment Drawing System
EDS Exchangeable Disk Storage
EDSEA Enhanced Display Station Emulation Adapter
EDSFA Erbium-Doped Silica Fiber Amplifier
EDSL Extended Digital Subscriber Line
E-DSPM Enhanced Digital Signal Processing Module
E-DSS1 European Digital Subscriber Signaling System No. 1
EDSX Electronic Digital Signal Cross-Connect
EDT Eastern Daylight Time
EDT Electronic Design Transfer
EDT Enhanced Data Transfer
EDTC Enhanced Digital Trunk Controller
EDTCC Electronic Data Traffic Control Computer
EDTK Event Driven Trunk Call Processing
EDTM Electrical Time-Division Multiplexing
EDTU Enhanced Digital Test Unit
EDTV Enhanced-Definition Television
edu Educational institutions domain
EDW Energy Dispersion Waveform
EDX Enhanced Digital Switch
EDX Extended Data Register
EE Electrical Engineering
Ee Entity End
EE Equipment Engineering
EE Extended Edition
EE ISO country code for Estonia
E-E End-to-End
EE&Q Environment, Ethics & Quality
EEA Electronic Engineering Association (UK)
EEA European Economic Area (EFTA)
EEA The Association of the Electronics, Telecommunications
and Business Equipment Industries (UK)
EEC Electrical Echo Canceler
EEC Escrow Encryption Chip
EEC European Economic Community
EEC European Economic Community (no longer used, replace by EU)
EECA European Electronic Component Manufacturers' Association
EEE Electronic Equipment Enclosure
EEE End-to-End Encryption
EEG Electro-EncephaloGram (Medical)
EEHO Either End Hop Off
EEI External Event Information
EEIG European Economic Interest Group
EEL Edge-Emitting Laser
EEL Electric Echo Loss
EEL Electric Echo Loss
EEM End to End Message
EEM Enhanced Expanded Measurements
EEMA European Electronic Mail Association
EEMS Enhanced Expanded Memory Specification
EEP Electrical Echo Path
EEPOT Electrically Erasable programmable POTentiometer
EEPROM Electrically Erasable Programmable Read-Only Memory
EEPROM Electrically Erasable PROM
EER Event Error Rate
EER Extended Entity Relationship
EEROM Electrically Erasable Read-Only Memory
EES End-to-End Signaling
EES Escrowed Encryption Standard
EES European Economic Space
EESS Earth Exploration Satellite Service
EESSC End-to-End Signaling via Speed Calling
EET Equipment Engaged Tone
EETD End-to-End Transit Delay
EETDN End-to-End Transit Delay Negotiation
EEVP End-to-End Virtual Path
EEVPN End-to-End Virtual Private Network
EEWD Enhanced Exchange Wide Dial
EF Elementary Function
EF Enhanced Functions
EF Enhancement Factor
EF Envelope Function
EF Erase in Field
EF&I Engineer, Furnish, and Install
EFB Error Free Block
EFCI Explicit Forward Congestion Indication
EFCI Explicit Forward Congestion Indicator
EFCN Explicit Forward Congestion Notification
EFCS Electronic Flight Control System
EFD Endpoint Format Descriptor
EFD Event Forwarding Discriminator
EFD Event-Forwarding Discriminator
EFDS Error Free DeciSeconds
EFF Electronic Frontier Foundation
EFF ElectronikFabrikant Foreningen (Association of Electronics Manufacturers (Denmark)
EFF Extended Frame Format
EFI Electronics for Imaging
EFI Engineer, Furnish and Install
EFI Errored Frame Indicator
EFI Expedited Flow Indicator
EFIE Extended Facility Information Element
EFIS Electronic Flight Instrument System
EFL Emitter Follower Logic
EFM Eight-to-Fourteen Modulation (Coder/Decoder)
EFPT European Feature Patch Team
EFQM European Forum for Quality Management
EFQM European Foundation for Quality Management
EFR Enhanced Full Rate
EFRAP Enhanced Frame Relay Access Processor
EFRC Enhanced Full Rate Codec
EFS Encrypting File System
EFS End of Frame Sequence
EFS Error Free Signal
EFS Error-Free Seconds
EFS External File Service
EFSM Extended Finite State Machine
eFSM Extended Finite State Machine
EFT Electrical Fast Transient
EFT Electronic Funds Transfer (Banking)
EFT Extended Fundamental Types
EFTA Europäische Freihandelsassoziation
EFTA European Free Trade Association
EFTPOS Electronic Funds Transfer at Point of Sale
EFTS Electronic Funds Transfer System
EFTT Enable Full Time Transmission
EG Equipment Ground
EG Europäische Gemeinschaft(en)
EG Expert Group
EG External Gateway
EG ISO country code for Arab Republic of Egypt
EG5 PAC Expert Group 5 (Mobile and Personal Communications)
EGA Enhanced Graphics Adapter
EGAD Education General Administration Database
EGC Enhanced Group Call
EGC Equal Gain Combining
EGCT Expert Group in Conformance Testing
EGP Exterior Gateway Protocol (TCP/IP-DoD)
EGP External Gateway Protocol
E-GSM Extended GSM
EH Event Handler
EH Exception Handling
EH External Host
EH ISO country code for Western Sahara
EHB Extra Half Bright
EHC Error Handling Category
EHD Expected High Day
EHDV Ergonomie et Harmonisation des Dialogues Vocaux
EHF Extremly High Frequency (30...300 GigaHertz)
EHKP4 Einheitliche Hohere Kommunikations Protokolle Ebene 4
(Unified Higher-Level Control Protocol for Level 4)
EHKP5 Einheitliche Hohere Kommunikations Protokolle Ebene 5
(Unified Higher-Level Control Protocol for Level 5)
EHLD EKTS Hold
EHLLAPI Emulator High-Level Language API
EHPT Ericsson Hewlett-Packard Telecommunications
EHS Environmental, Health, and Safety
EHS Exception Handling System
EHT Exception Handling Team
EHT Extremely High Temperature
EHT Extremly High Tension (10 kiloVolt...)
EHZ Einhangezeichen (On-Hook Signal)
EHZA Einhangezeichen des A-Tln
EI DDOC Section: Engineering Information
EI Emergency Indication
EI Enable Interrupt
EI Error Indication
EI Event Information
EI Expected Integrity
EI External Interface
EI External Interrupt
EIA Electronic Industries Association (USA)
EIB Ethernet Interface Board
EIC Equipment Installers Code
EIC Ethernet Interface Card
EICTS ENET Integrity Check Traffic Simulator
EID Endpoint Identifier
EIDE Enhanced Integrated Drive Electronics
E-IDE Enhanced IDE
EIES Electronic Information Exchange System (CCA/VTS)
EIGRP Enhanced Interior Gateway Routing Protocol
EIH Error Interrupt Handler
EII Early Industry Interaction
EII Electronic Image Industry
EII European Information Infrastructure
EIM Errored Interval Monitor
EIM Ethernet Inverse Multiplexer
EIM External Interface Module
EIN Ethernet Interface Node
EIN European Informatics Network
EIN European Information Network
EIOC Enhanced Input/Output Controller
EIOP Enhanced International Operator Position
EIP Electronic Image Processing
EIP Equipment Installation Procedure
EIP Ethernet Interface Paddle Board
EIP Extended Instruction Pointer
EIP Extended Internet Protocol
EIR Engineering Information Report
EIR Equipment Identification Register
EIR Equipment Identification Register
EIR Equipment Identity Register
EIR Excess Information Rate
EIR Excessive Information Rate
EIRMA European Industrial Research Management Association
EIRP Effective Isotropic Radiated Power
EIRP Equivalent Isotropic Radiated Power
EIRP Equivalent Isotropically Radiated Power
EIS Electronic Information Systems
EIS Emulator Interface Specification
EIS Executive Information System
EIS Expanded Inband Signaling
EISA Extended Industry Standard Architecture
EISCAT European Incoherent SCATter facility
EISP Enhanced ISDN Signaling Preprocessor
EISSC Executive Information Systems Steering Council
EIT Encoded Information Type
EIU Ethernet Interface Unit
EIUF European ISDN Users Forum
EIV Encryption Initialization Vector
EJ Electronic Journalism
EJB Enterprise JavaBeans
EJOB European Joint Optical Bistability Project
EKBCEB EKTS Bridged Call Exclusion Billing Records
EKDNBB EKTS Directory Number Bridging Billing Records
EKE End System Key Exchange
E-KEY Expected KEY
EKICB EKTS Intercom Calling Billing Records
EKSRTB EKTS Station Ringing Transfer Billing Records
EKTS Electronic Key Telephone Service
EKTS Electronic Key Telephone Set
EKTS Electronic Key Telephone System
EKTSAM EKTS Analog Member
EKUBB EKTS User Bridging Billing Records
EL Echo Loss
EL Electro Luminescence
EL Electroluminescent
EL Electronic Library
EL Element Layer
EL ELevation
EL Encode Level
EL Engineering Letter
EL Erase in Line
EL Erase Line
EL Exchange Line
ELA ELektroAkustik
ELAN Emulated Local Area Network
ELAN European Local Area Network
E-LAN Extended Local Area Network
ELC Exchange Line Capacity
ELCB Earth Leakage Circuit Breaker
ELCM Enhanced Line Concentrating Module
ELCOM Electrical Communication (periodical)
ELD Enhanced Line Drawer
ELEPL Equal Level Echo Path Loss
ELF Entry Leadership Forum
ELF Error Logging Facility
ELF Executable and Linking Format
ELF Extensible Linking Format
ELF Extension Language Facility
ELF Extremely Low Frequency
ELF Extremely Low Frequency (3- 10 kHz)
ELLC Enhanced Logical Link Control
ELMS Element Layer Management System
ELN Essential Line
ELOBA Events, Logs, OMs, Billing, Alarms
ELOT Hellenic Organization for Standardization
ELOT Hellenic Organization for Standardization (GR)
ELP Encode Level Point
ELPP Enhanced Link Peripheral Processor
ELR Earth Loop Recall
ELS Entry Level Solution
ELSEC Electronic Security
ELSI Extra Large Scale Integration
ELT Emergency Locating Transmitter
ELT Emergency-Load-Transfer signal
ELT Extension Load Tape
ELV Edit Level Video
ELV Electrical Low-Voltage
ELW Editable List Widget
EM E&M
EM Edit Message
EM Electromechanical
EM Electromigration
EM Electronic Mailing
EM Element Management
EM Element Manager
EM Emphasis (HTML tag)
EM Emulate Coprocessor
EM Emulation
EM End of Medium
EM Engineering Manual
EM Enterprise Module
EM Environment Monitor
EM Error Monitoring
EMA Electronic Mail Association (USA)
EMA Electronic Messaging Association
EMA Enterprise Management Architecture (DEC)
EMA Excellence! Maturity Assessment
EMACS Editing Macros
Emacs Extensible Macro-Customizable Self-Documenting Editor
EMAG ETSI MIS Advisory Group
email Electronic Mail
EMAIL Electronic MAIL
EMAU Ethernet Media Access Unit
EMB Extended Memory Block
EMBARC Electronic Mail Broadcast to a Roaming Computer
EMBC European Molecular Biology Conference
EMC Electromagnetic Compatibility
EMC Embedded Maintenance Channel
EMC Enhanced Multipurpose Cabinet
EMC Equipment Manufacture Code
EMD Edelmetall Motor Drenwahler (Analog Mechanical Switch)
EME Earth-Moon-Earth radio path
EMERALD Enhanced Measurement for Early Risk Assessment of Latent Defects
EMF ElectroMagnetic Field
EMF Electromotive Force
EMF Enhanced Metafile
EMF Enhanced Metafile Format
EMF Environment Manager Function
EMF Event Management Framework
EMG Environment Manager Global
EMI Electromagnetic Interference
EMI Enable Manual Input
EMI Exchange Message Interface
EMI External Memory Interface
EMIC ESTU Module Interface Card
EMIRTEL Emirates Telecommunications Corporation
EMK Emergency Key
EML Element Management Layer
EML Expected Measured Loss
eMLPP Enhanced Multi-Level Precedence and Preemption
EMM Entitlement Management Message
EMM ESTU Master Module
EMM Event Measurement Mapping
EMM Expanded Memory Manager
EMMI Electrical Man Machine Interface
EMMS Electronic Mail and Messaging Systems
EMN Enterprise Meeting Notice
EMP Electromagnetic Pulse
EMPC Enhanced Multiprotocol Controller
EMPC Enhanced Multi-Purpose Controller
EMR ElectroMagnetic Radiation
EMR ElectroMechanical Relay
EMR Exchange Message Record
EMRLD Emergency Recovery Log Database
EMRP Effective Monopole-Radiated Power
EMS Electronic Mail System
EMS Electronic Messaging Service (e-mail)
EMS Element Management System (ATT)
EMS Engineering Modelling System (CAD/CAE)
EMS Enhanced Maintenance Server
EMS Enterprise Management Systems
EMS Enterprise Messaging Server
EMS Equivalent Series Resistance
EMS Event Management Service (DSM-Tandem)
EMS Expanded Memory Specification
EMS Expanded Memory System
EMS Express Mail Service
EMS Extended Memory Standard
EMSOG EUTELSAT Multiservice Systems Operations Guide
EMSS Electronic Message Service System
EMT Emulator Trap
EMT Environment Manager Type
EMU Economic Monetary Union
EMU Element Management Unit
EMUG European MAP User Group
EMUG European MAP Users' Group
EMV Europay, MasterCard, Visa
EMW Executive Message Waiting
EMWAC European Microsoft Windows NT Academic Centre
EN Edit Notification
EN Enable
EN Entry
EN European Norm
EN European Standard (CEN/CENELEC)
EN Exchange Node
ENAC Engineering Network Administration Center
ENAC European Network and Application Center
ENADS Enhanced Network Administration System
ENB Effective Noise Bandwidth
ENC Electronic Navigational Chart
ENC ENET Cabinet
ENCP Enhanced Network Central Processor
ENDB ENET Database Audit
ENDEC Encoder/Decoder
Endwrd indicates last code word of a packet
ENE Enterprise Network Event (MAP/TOP)
ENET Enhanced Network
ENF Exchange and Network Features (CEPT)
ENFIA Exchange Network Facilities for Interstate Access
ENG Electronic News Gathering
ENG Electronic News Gathering
ENG Engaged
ENHCWT Enhanced Call Waiting
ENI Enable Interrupts
ENIAC Electronic Numerical Integrator Analyzer and Computer
ENIAC Electronical Numerical Integrator & Calculator (Mauchly 1946)
ENIP Exception-Time Next Instruction Pointer
ENL Number of LSBs to be compared when operating outside home network
ENMC Enterprise Networks Management Center
ENO Enable Output
ENOB Effective Number Of Bits
ENQ Enquiry
ENR Emergency Number Routing
ENR Enterprise Network Roundtable
ENS Enterprise Naming Service
ENS Enterprise Network Services
ENS Enterprise Network Switch
ENS European Nervous System
ENS Event Notification Server
ENSO ETSI National Standardization Organization
ENSS European Navigation Satellite System
ENSS Exterior Nodal Switching Subsystem
ENT Enter
ENT Entry
ENUM Enumeration
ENV Environment
ENV European Pre-Norm
ENV European Pre-Standard (CEN/CENELEC)
EO Elementary Objectives
EO End Office
EOA End of Address
EOB End of Block
EoB End of Bus
EOB End of Business
EOBS Engineering and Operations in the Bell System, First Edition, 1997
EOBS2 Engineering and Operations in the Bell System, Second Edition, 1983
EOC Edge Of Coverage
EOC Embedded Operations Channel
eoc Embedded Operations Channel
EOC End Of Card
EOC End of Contents
EOC End Of Conversion
EOC Physical EOC Channel
EOD End of Data
EOD End of Dialing
EOD End Office Display
EOF End of Data Set Trailer Label
EOF End of File
EOF End Of Form
EOF End of Frame
EOF Enterprise Objects Framework
EOF1 End-of-Data Set Label 1
EOF2 End-of-Data Set Label 2
EOFB End of Facsimile Block
EOH End Of Heading
EOI End Of Identity (IEEE-488 Bus Signal)
EOI End of Image
EOI End of Information
EOJ End of Job
EOL End Of Letter
EOL End of Life
EOL End of Line
EOL End of Option List
EOLR Electrical Objective Loudness Rating
EOM Electro-Optical Module
EOM End of Message
EON End Of Number
EOP Early Outpulsing
EoP End of Optional Parameters
EOP End of Outpulsing message
EOP End Of Procedure
EOP End of Process
EOP End of Program
EOP End of Pulsing
EOPS Enhanced Operator Position System
EOPS Extended Operator Position Service
EOQ European Organization for Quality
EOQC European Organization for Quality Control
EOR End of Record
EOR End of Recording
EOR End Of Reel
EOR End Of Retransmission
EOR End Of Run
EOS Electrical Over-Stress
EOS End Of Scan
EOS End of Selection message
EOS End of Statement
EOS Enhanced Operator Services
EOS Extended Operating System
EOSR Expanded Operator Services Record
EOT End of Tape
EOT End of Tone
EOT End Of Trace (Digital Storage Scope)
EOT End of Transmission
EOT End Office Tandem
EOTC European Organization for Testing and Certification
EOTC European Organization for Testing and Certification
EOUG European Oracle User Group
EOV End of Volume
EOW Engineering Order Wire
EOW Engineering Orderwire
EOW Enhanced Outward WATS
EP Emulation Program
EP End Point
EP Equipment Practice
EP Equipment Practice (CEPT)
EP ESA Processor
EP Estimated Position (ship-navigation)
EP ETSI Project
EP Europäisches Parlament
EP European Parliament
EP Extended Play (discs)
EP External Priority
EPA End of Protected Area
EPA Enhanced Performance Architecture (MAP)
EPA Environmental Protection Agency
EPA Equilibrium Point Analysis
EPAC Extended Privilege Attribute Certificate
EPB Energy-Pulse Bonding
EPBX Electronic Private Branch Exchange
EPC Earth Potential Compensation
EPC Electronic Power Conditioner
EPC Ethernet Paddle Card
EPCI Enhanced Programmable Communications Interface
EPD Early Packet Discard
EPDB Exchange Production Database
EPDF Embedded PDF
EPFS Electronic Position Fixing System (ship-navigation)
EPG Electronic Program Guide
EPHOS European Procurement Handbook for Open Systems
EPI Error Power Indicator
EPI External Presentation Interface
EPIC Electronic Privacy Information Center
EPIC Emulating and Programmable Intergrated Circuits (RCA Inc.)
EPIC Explicitly Parallel Instruction Computing
EPIC Extended PCM Interface Controller
EPIRB Emergency Position-Indicating Radio Beacon
EPL Echo Path Loss
EPL Effective Privilege Level
EPL Electronic Price Label
EPLD Electrically Programmable Logic Device
EPLD Erasable Programmable Logic Device
EPN End Point Number
EPNR Expanded Private Network Record
EPO Electronic Payment Order
EPO Error Performance Objective
EPOC Embedded Protected Operations Channel
EPODD Electronic Publishing: Origination, Dissemination and Design
EPOS Electronic Point Of Sale
EPOSR Expanded Private Operator Services Record
EPOTS Enhanced POTS
EPP Enhanced Parallel Port
EPP ETSI Partnership Project
EPPA European Public Paging Association
EPPV Enhanced Pay-Per-View
EPR Ethylene Propylene Rubber (Cable Insulation)
EPRCA Enhanced Proportional Rate Control Algorithm
EPROM Erasable Programmable Read-Only Memory
EPS Electronic Publishing Services Ltd.
EPS Encapsulated PostScript
EPSCS Enhanced Private Switched Communications Service
EPSF Encapsulated PostScript Format
EPSI EPS Interchange
EPSR Exception-Time Processor Status Register
EPSS Experimental Packet-Switching Service (UK)
EPT Engineering/Provisioning Tool
EPV Entry Point Vector
EQ Equal To
EQ Equalizer
EQ Equipment
EQAC Equal Access
EQC Equipment Class
EQE Equalization Enable
EQI Equipment Identifier
EQI ETSI Quality Index
EQL EQuaLiser
EQM ETSI Quality Management (programme)
EQN Equation
EQPEC Equipment Product Engineering Code
eqpt Equipment
EQR Electronics Quality Registry
EQTV Extended Quality Television
EQU Equate
EQU_ACC Equal Access
EQWT Equippage, Wrong Type
ER Echo Replica
ER Elastic/Rigid
ER Electronic Radiology
ER Engineering Route
ER Entity Relationship
ER Entity-Relationship
ER Equipment Register
ER Ericsson Review (periodical)
ER Error
ER Event Register
ER Exception Report
ER Explicit Rate
ER Explicit Route
ER Extended Range
ER ISO country code for Eritrea
ER PDU Error Data Protocol Unit (OSI-TP)
ERA Entity Relationship Attribute
ERAM Egress RAM
ERASMUS EC Actions Scheme for the Mobility of University Students
ERB Emergency Ringback
ERBIS Einheitliches rechnergestutztes Betriebsinformationssystem
(OAM application for providing on-line documentation)
ERC Electrical Rule Checking
ERC European Radio Commission
ERC European Radiocommunications Committee
ERC Explicit Rate Control
ERC Explicit Route Control
ERCC ERror Checking and Correction
ERCO Entry Rules Control Object (CCA/VTS)
ERCS Extended Reference Concrete Syntaxes
ERD Emergency Recovery Display
ERD Entity Relationship Diagram
ERE Extended Regular Expression
ERF Event Reporting Function
ERG Electro RetinoGram
ERI Exception Response Indicator (SNA)
ERL Echo Return Loss
Erl Erlang
ERL ERror Line
ERLC Extended Range Line Card
ERLE Echo Return Loss Enhancement
ERLL Enhanced Run Length Limited
ER-LSP Explicitly Routed Label-Switched Path
ERM EMC and Radio Spectrum Matters
ERM Erasure Mode
ERM Explicit Rate Manager
ERM Explicit Rate Marking
ERMES European Radio Message System
ERMES European Radio Messaging Service
ERMES European Radio Messaging System
ERMF Event Report Management Function
ERN Explicit Route Number (SNA)
ero Entity Reference Open
ERO European Radio Office
ERO European Radiocommunications Office
ERO Explicit Route Object
EROS Emitter-Receiver for Optical Systems
EROS European Ranging Observations to Satellites
EROW Executive Right of Way
ERP Ear Reference Point
ERP Effective Radiated Power
ERP Enterprise Resource Planning
ERP Equivalent Radiated Power
ERP Error Recovery Procedure
ERP Estimated Retail Price
ERR Error
ERR Error message
ERR Protocol Data Unit Error
ERR Response to end of Retransmission
ERS Electronic Register-Sender
ERS Emergency Reporting System
ERS Engineering Requirement Specification
ERS European Remote sensing Satellite
ERS Event Reporting System
ERS Existential Refusal Set
ERS Extended Ring Search
ERT Emergency Response Team
ERT Enhanced Remote Thumbwheel
ERT Estimated Repair Time
ERT Event Register Temporary
ER-TPOU Error Transport Data Protocol Unit
ERTS Error Rate Test Set
ERU Emergency Recovery Utility
ERV Enhanced Roamer Validation
ERWM Expensive Route Warning Message
ERWT Expensive Route Warning Tone
ES Earth Station
ES Echo Suppressor
ES Edit Style
ES Emergency Service
ES Emergency Services
ES End Station
ES End System
ES Enhanced Security
ES Errored Second
ES Errored Seconds
ES ETSI Secretariat
ES European Standard
ES Exception Summary
ES Expanded Spectrum
ES Expert System
ES Extra Segment
ES ISO country code for Spanish State (Spain)
ESA Editing and Standards Approval department (ETSI)
ESA EFTA Surveillance Authority
ESA Emergency Services Adjunct
ESA Emergency Stand Alone
ESA End of Selected Area
ESA Enterprise System Architecture (MVS/IBM)
ESA European Space Agency
ESA European Statistics Administration
ESA Extended Service Area
ESA Extended System Architecture
ESAC Electronic Surveillance Analysis Center
ESAC Electronic Switching Assistance Center
ESAC Electronic Systems Assistance Center
ESAC Emergency Stand-Alone Circuit
ESAT Employee Satisfaction
ESAT Employee Satisfaction Action Team
ESAT Employee Satisfaction Team
ESB Emergency Service Bureau
ESB European Standardization Board
ESBC Emergency Services Bureau Capability
ESBC Emergency Services Bureau Compatibility
ESBC Enhanced Single-Board Computer
ESBT Emergency Services Bureau Terminability
ESC Echo Suppressor Control
ESC Emergency Services for China
ESC Engineering Service Circuit
ESC Enhanced Services Complex
ESC Escape
ESCA Electron Spectroscopy for Chemical Analysis
ESCLIST Escape List
ESCO Emergency Service Central Office
ESCON Enterprise Systems CONnection
ESCORT EBU system for the classification of radio and television programmes
ESCR Elementary Stream Clock Reference
ESD Electronic Software Delivery
ESD Electronic Software Distribution
ESD Electrostatic Discharge
ESD Electrostatic Sensitive Device
ESD End of Stream Delimiter
ESD End System Designator
ESD Errored Seconds Daily Threshold
ESD European Standards Database (CEN)
ESD Extended State Diagram
ESD External Symbol Dictionary
ESDI Enhanced Small Device Interface
ESDI Enhanced Small Disk Interface
ESDN Enhanced Secondary Directory Number
ESDS Electrostatic Discharge Sensitive
ESDS Entry Sequenced Data Set
ESE Encapsulated Software Entities
ESEL Electronic Shelf Edge Labelling
ESF Edge Spread Function (Imaging)
ESF European Science Foundation
ESF Extended Super Frame
ESF Extended Superframe
ESF Extended Superframe Format (ATT)
ESF Extended Superframe Format (Digital Datacommunications)
ESG Emergency Service Group
ESG Emergency Services Group
ESH Embedded Shell
ESH End System Hello
ESH Errored Seconds Hourly Threshold
ESHO Extended Soft Hand-Off
ESI End Station Identifier
ESI End System Identifier
ESI Enhanced Service Initiative
ESI Environment Science Index
ESI Equivalent Step Index (Profile) (Optical Data Communications)
ESI Extended Source Index Register
ESI External Synchronisation Input
ESI External Synchronization Interface
ESID Effective Segment ID
ESIG European SMDS Interest Group
ESIG European SMDS Interest Group
ESIOP Environment-Specific Inter-ORB Protocol
ESIS Element Structure Information Set
ESIS End System to Intermediate System
ES-IS End System to Intermediate System protocol
ESL Essential Line
ESL Essential-Service Line
ESLAM Essential Line for Analog Member of EKTS
ESLIC Enhanced Subscriber Line Interface Circuit
ESLUA European SL-1/Meridian 1 Users Association
ESMA Expanded Subscriber Carrier Module Access
ESME External Short Message Entity
ESMR Enhanced Specialized Mobile Radio
ESMR Extended Specialized Mobile Radio
E-SMR Enhanced Specialized Mobile Radio
ESMS Echo Suppressor Measuring Set
ESMTP Extended SMTP
ESMTP Extensions to SMTP
ESMU Enhanced Subscriber Carrier Module Urban
ESN Electronic Serial Number
ESN Electronic Switched Network
ESN Electronic Switching Network
ESN Emergency Service Number
ESN Enhanced Services Network
ESO Echo Suppressor, Originating
ESO Emergency Service Order
ESO European Space Observatory (in Chile)
ESO European Space Organization
ESO European Standardization Organization
ESO External Synchronisation Output
ESOC European Space Operation Centre
ESOG EUTELSAT Systems Operations Guide
ESP Employee Services Portfolio
ESP Encapsulating Security Payload
ESP End of Speaker Identification
ESP Engineering Services Practices
ESP Enhanced Serial Port
ESP Enhanced Service Provider
ESP Enhanced Services Protocol
ESP Enhanced Services Provider
ESP Essential Service Protection
ESP Estimated Sale Price
ESP Extended Stack Pointer
ESPA Equipment Space Planning Algorithm
ESPA European Selective Paging Association
ESPC No. 1 ESS Stored Program Control
ESPCS Enhanced Private Switched Communications Service
ESPG Equipment Space Planning Guideline
ESPN Entertainment and Sports Programming Network
ESPP Enhanced Service Provisioning Plarform
ESPRIT European Strategic Programme for Research and development in Information Technology
ESR Equivalent Series Resistance
ESR Errored Second Ratio
ESR Event Service Routine
ESR Extended Self-Contained Ring
ESR Extended Spectral-Response
ESRB Entertainment Software Ratings Board
ESRO Efficient Short Remote Operations
ESS Electronic Switching System (Bell)
ESS Enhanced Surveillance Services
ESS Environmental Stress Screening
ESS European Standardization System
ESS Extended Service Set
ESSE Embedded Systems Software Environment
ESSI Enhanced Synchronous Serial Interface
EST Eastern Standard Time
EST Echo Suppressor Terminal
EST Echo Suppressor, Terminating
EST Enhanced Service Testing
EST Environmental Stress Testing
EST Establish
EST Establish hunt or call pickup group
ESTEC European Space research and TEchnology Centre
ESTELLE Extended finite State Transition Language
ESTO Electronic Systems Technology Office
ESTS Echo Suppressor Testing System
ESTU Enhanced Services Test Unit
ESU Empty Signal Unit
ESU Exhange Signaling Unit
ESUG European Smalltalk User's Group
ESV Extended State Variable
ESW Embedded Software
ESWL Extracorporeal Shock-Wave Lithotripsy (Medical)
ESZ Emergency Service Zone
ET Eject Tape
ET Elapsed Time
ET Electrical Typewriter
ET Emerging Technologies
ET End Terminal
ET Engaged Tone
ET Ephemeris Time
ET Exchange Terminal
ET Exchange Termination
ET Exchange Terminator
ET Extension Type
ET ISO country code for Ethiopia
ETA Enhanced Terminal Access
ETA Estimated Time of Arrival
ETAC Electronic Technical Assistance Center
ETACS Extended Total Access Communications System
ETACS Extended Total Access System
Etag End Tag
ETAS Emergency Technical Assistance Service
ETB End of Transmission Block
ETC Electronic Toll Collection
ETC Enhanced Throughput Cellular
ETCCC European Testing and Certification Coordination Council
ETCI Electro-Technical Council of Ireland (IRL)
ETCO European Telecommunications Consultancy Organization
ETCOM European Testing & Certification for Office and Manufacturing (Agreement Group)
ETCOM European Testing for Certification for Office and Manufacturing Protocols
ETDC Electronic Traffic Data Converter
ETDM Electrical Time Division Multiplexing
ETDMA Extended Time Division Multiple Access
E-TDMA Enhanced TDMA
E-TDMA Extended TDMA
ETE End-To-End
ETE Equivalent Telephone Erlangs
ETFCC Elapsed Time From Carrier Connect
ETFTP Enhanced Trivial File Transfer Protocol
ETG EWOS Technical Guide
ETG EWOS Technical Guide
ETH (Swiss Federal Institute of Technology)
ETH Eidgenossische Technische Hochschule
ETHERIP Ethernet within IP
ETI External Traffic Indicator
ETL Effective Testing Loss
ETLA Extended Three-Letter Acronym
ETM Element Test and Maintenance
ETMS Enhanced TOPS Message Switch
ETN Electronic Tandem Network
ETNA Ericsson Transport Network Architecture
ETNF European Telecom Numbering Forum
ETNO Association of Public Telecommunications Network Operators
ETNO European Telecommunications Network Operators' Association
etno micro (10-6)
ETNS European Telephony Numbering Space
ETO Equalized Transmission Only
ETOM Electron-Trapping Optical Memory
ETP Event Transition Procedure
ETP Expertise Training Plan
ETPS Enhanced Toll Position System
ETR Early Token Release
ETR Electronically Tuned Receiver
ETR Enhanced Tip/Ring
ETR Estimated Time of Restoral
ETR Estimated Time to Restore
ETR ETSI Technical Report
ETR European Technical Report
ETS Electronic Tandem Switch
ETS Electronic Tandem Switched
ETS Electronic Tandem Switching
ETS Electronic Telephone Set
ETS Electronic Translator System
ETS Enhanced Time Switch
ETS Enterprise Technology Services
ETS Equivalent Time Sampling
ETS European Telecommunication Standard (ETSI)
ETS European Teleprocessing Systems
ETS Executable Test Suite
ETS-4 Electronic Tandem Switch-4 Wire
ETSA European Telecommunication Services Association
ETSAG European Telecommunications Standards Awareness Group
ETSBES Electronic Tandem Switching Billing Enhancements
ETSDU Expedited Transport Service Data Unit
ETSI European Telecommunications Standards Institute
ETUC European Trade Union Confederation
ETV Educational Television
ETV External Testcase Verification
ETW Enhanced Two-Way WATS
ETX End of Text
EU End User
EU European Union (new name for EEC)
EU Execution Unit
EU External Update
EUC End-User Control
EUC Extended Unix Code
EUCATEL EUropean Conference of Associations of TELecommunication industries
EUCL End User Common Line
EULA End-User License Agreement
EUM Extended Unsuccessful Backward Setup Information message
EUMETSAT EUropean METeorological SATellite system
EUN External Update Notification
EUNET European Unix NETwork
EUPIC End User's Presubscribed Interexchage Carrier
EUR End User Role
EURATOM EURopean ATOMic energy community
EUREKA Europäische Forschungskoordinationsagentur
EUREKA EURopean initiative for collaborative research
EUREKA European Research Coordination Agency
EURESCOM European Institute for Research and Strategic Studies in Telecommunications
EURO- TECH Technisches Komitee des EACEM
EUROCAE EURopean Organisation for Civil Aviation Equipment
EUROCONTROL European Organisation for the Safety of Air Navigation
EUROTECH EACEM Technical Committee
EUSIDIC European Association of Information Services
EUT Equipment Under Test
EUT Equipment Under Test
EUTELSAT European Telecommunication Satellite Organization
EUTELSAT European Telecommunications Satellite Organization
EUUG European UNIX User Group
EUV Extreme Ultra Violet
eV Electron Volts
eV electronVolt
EV Encoding Variation
EV Environment Variable
EV Equipment View
EV Event
EV Extreme Value
EVE European Videoconference Experiment
EVE Extreme Value Engineering
EvI Event Information
EVK Evaluation Kit
EVL Evolution Rule Language
EVM Event Management Layer
EVP EnVeloPe
EVP Executive Vice President
EVRC Enhanced Variable Rate Coder
EVS Enhanced Voice Services
EVS Event Services
EVS Expense Vouchering System
EVSB Extensible VERSAbus
EVT Exception Vector Table
EVUA European Virtual Private Network Users Association
EVX Electronic Voice Exchange
EW Electronic Warfare
EWAL Enhanced WATS Access Line
EWB ETAS Warning Bulletin
EWE Engineering Workstation Environment
EWG Europäische Wirtschafts Gemeinschaft
EWI E-mail Waiting Indication
EWL Exchange Work List
EWOS European Workshop for Open Systems
EWOS European Workshop on Open Systems
EWP Electronic White Pages
EWP ETSI Work Programme
EWP Extended Warranty Plan
EWS Electronic Work Station
EWS Elektronisches Wahlsystem (Siemens electronic switching system)
EWS ESTELLE Work Station
EWSD Elektronisches Wahlsystem Digital (Siemens digital switching system)
EWSD Elektronisches Wahlvermittlungssystem Digital (Siemens digital switching system)
EWSM Elektronisches Wahlsystem, MAN (Electronic Switching System, MAN)
EWT Estimated Work Time
EWTN Eternal Word Television Network
EX Execute
EX Exercise
EX Exit Notification
EX EXpedited data
EX Instruction Execution
EXB Extension Bridging
EXC Exception
ExCA Exchangable Card Architecture
EXCA Exchangeable Card Architecture
EXCL Exclusive
EXCON Expand and Concentrate
EXD MDII: Address Signaling Error- Extra Digit
EXE Executable
EXE Executable File
EXE EXEcute
EXEC Executable
EXEC Execute
EXEC EXECute
EXECOM ETSI Executive Committee
EXIP Exception-Time Execution Instruction Pointer
EXM Exit Message
EXND External Node
EXP EXPonential function
EXP Exports file
EXP MDII: Address Signaling Error- Extra Pulse
EXR Exception Request
EXRL Exception Rate Line
EXRQ External Request
EXT Extension
Ext Extension
EXT Extension File
EXT Extension Shelf
EXT External
EXT External Alarms
EXT SRC Extended Search
EXTC Extend Call message
ExT-ID Exchange and Trunk Identity
EXTN Extension
EXTND Extended
ExTS Executable Test Suite
EYP Electronic Yellow Pages
eZIF Electrically-Activated Zero Insertion
F "Final character" registered by ISO 2022 registration authority
F Failed
F Farad
F Farenheit
F Fellow
F Final
F Final bit
F Fixed
F Fixed length
F Flag
F Flow
F Forecast
F Forward Compatibility
F Framing
F French
f Frequency
F FTAM Service
F Fully Associated (link)
F Future
F&A Facilities and Equipment System
F/B Fuse Block
F/RSC Fiber Remote Switching Center
F/SSS Facility/Service Selective Signaling
F/W Firmware
F/W Framework
F/X Effects
f1 frequency 1
f2 frequency 2
F2F Face to Face
F2XM1 FP Compute 2**x- 1 (80x86 inst)
FA FachAusschuß
FA Facility Agent
FA Factory Automation
FA Fast Acting
FA Fast Answer
FA Fax Adapter
FA Feature Activation
FA Feature Activation information element
FA Feature Activator
FA Feature Activators
FA Fermeldeampt (Data Processing Regional Area)
FA Fernmeldeamt (Telecommunication Office) (Telecommunications Exchange)
FA File Administrator
FA First Available
FA Foreign Agent
FA Forwarding Agent
FA Frame Address
FA Frame Alignment
FA Framework Technical Advisory
FA Fremdanschaltung (ISDN out-of-area connection)
FA Full Allocation
FA Functional Area
FA Fuse Alarm
FAA Facility Accepted Message
FAA Federal Aviation Administration
FAA Federal Aviation Agency (USA)
FAA Forced Agent Availability
FAAR Fixed Automatic Alternative Routing
FAC Facilities Administration Center
FAC Facility
Fac Facility
FAC Facility Message
FAC FACsimile
FAC Fan Alarm Card
FAC Final Assembly Code
Fac i Facility Indicator
FACBC Facility Number Bearer Capabilities
FACCH Fast Associated Control Channel
FACCH/F Fast Associated Control Channel/Full Rate
FACCH/F Full rate Fast Associated Control CHannel
FACCH/H Fast Associated Control Channel/Half Rate
FACCH/H Half rate Fast Associated Control CHannel
FACD Facility Accepted message
FACD Foreign Area Customer Dialing
FACE Field-Alterable Control Element
FACET Flexible Advanced Capacity Engineering Tool
FacI i Facility Information Indicator
FACID Facility Number
FACREQ Facilities Request
FACS Facilities Assignment and Control System
FACS Facility Administration Control System
FACSFG Facility Number/Simulated Facility Groups Association
FACT BRI Feature Activator Indicator Trigger
FACT First Application Conformance Test
FACT Functional Auditable Combined Testing
FAD Facility Access Digroup
FAD Facility Deactivated Message
FADN Feature Activators Per DNCT
FADS Force Administration Data System
FADSHADS FADS Hotel Administration Data System
FADU File Access Data Unit (FTAM)
FAF Facility Failure
FAFI Feature Activator/Feature Indicator
FAFI Paired Feature Activators-Feature Indicators
FAFIDN Paired Feature Activators-Feature Indicators Per DNCT
FAFIHMBS Paired Feature Activators-Feature Indicators Per Hunt
Make Busy Application Set
FAFISHS Paired Feature Activators-Feature Indicators Per Stop Hunt Application Set
FAHMBS Feature Activators Per Hunt Make Busy Application Set
FAI Facility Information Message
FAIGEN FAFI Generic Dialog
FAIM Frameworks with Architectural Implementations
FAIPOC FAFI Programming Outside the Context of a Call
FAIRSS FAFI Recognition and Starter Service
FAISUP FAFI Status Update
FAL Frame Alignment Loss
FAM Fast Access Memory
FAM File Access Method
FAM Final Address Message
FAM Forward Address Message
FAM The Family Channel
FAMAE Facility Agent MAE
FAME Fast Multiphase Excitation (Nuclear Magnetic Resonance)
FAMOS Floating-Gate Avalanche Metal Oxide Semiconductor
FAMOS Floating-gate Avalanche MetalOxide Semiconductor
FAN Flexible Access Network
FANI Flexible Automatic Number Identification
FANP Flow Attribute Notification Protocol
FANS Future Air Navigation System
FAOZ Fernmeldeamt-Ordnungszahl (Identification of Telecommunications Exchange)
FAP Feature Alteration Point
FAP Feature Appearance
FAP Format and Protocol
FAQ Frequently Asked Questions
FAR Facility Request Message
FAR False Alarm Rate
FAR Fixed Alternative Routing
FAR Flash during Audible Ringing Utility
FARnet Federation of American Research Networks
FARS Federal Acquisition Regulations
FAS Facility Associated Signaling
FAS File Access Subsystem
FAS Frame Alignment Signal
FAS Frame Alignment Symbol
FASHS Feature Activators Per Stop Hunt Application Set
FASIC Function- and Algorithm-Specific Integrated Circuit
FAST Fairchild Advanced Schottky TTL
FAST Family-oriented Abstraction, Specification, and Translation
FAST Federation Against Software Theft (UK)
FAST First Application System Test
FAST Forecasting and Assessment in Science and Technology
FAST Frequency Agile Sharing Technology
FASTAR Fast Automatic Restoration
FASTPLA FAST Programmable Logic Array (Fairchild Semicond.Inc)
FAT File Allocation Table
FAT File Allocation Table (DOS)
FAT Final Acceptance Testing
FAT Foreign Area Toll
FAT Foreign Area Translation
FAT Foreign Area Translator
FAT Framework Architecture Team
FAW Frame Alignment Word
FAX Facsimile
Fax Facsimile
FAXoIP Facsimile over Internet Protocol
FAZAM Full Armor Zero Administration
FB FrameBuilder
FB Frequency correction Burst
FB Frequency Correction Burst
FB Fuse Block
FBA Call Forward Busy Allowed
FBA Fair Buffer Allocation
FBAS Farbart, Bildinhalt, Austast, Synchron(-Signal)
FBC Facilities-Based Carrier
FBC Facility Bearer Channel
F-BCCH Fast Broadcast Control Channel
FBD Call Forward Busy Denied
FBD Full Business Day
FBD Functional Block Diagram
FBE Frame Bonding Equaliser
FBG Foreign Battery or Ground
FBPSM Fixed Block Pool Store Manager
FBR F-Bus Terminator/Repeater
FBS Flexible Bandwidth Service
FBSM File Based Service Management
FBSOA Forward Biased Safe Operating Area (Power Semiconductors)
FBSS Full Band Spread Spectrum
FBT Fused Biconic Taper
FBus Frame Bus
Fbus Frame Bus
FBUS Frame Transport Bus
F-BUS Frame Transport Bus
FC Facility Code
FC Facility Component
FC Fast Channel
FC Fast Class
FC Feature Close
FC Feature Control
FC Feedback Control
FC Fibre Channel
FC Final Compile
FC First Call
FC Flex Call
FC Flexible Calling
FC Flow Control
FC Frame Control
FC Frame Count
FC Function Code
FC Functional Call
FC Functional Capability
FC Functional Component
FC Functional Configuration
FC3 Flexible Call 3
FC4 Failure Condition
FCA Feature Code Access
FCA Fibre Channel Association
FCA Fixed Channel Allocation
FCA Fixed Channel Assignment
FCAPS Fault, Configuration, Accounting, Performance, Security Management
FCB Feature Control Block
FCB File Control Block
FCB Flexible Calling Billing Records
FCB Frequency Coordination Board
FCC Federal Communications Commission (US)
FCC File Carbon Copy
FCC Flexible Call Conference
FCC Flow Control Consortium
FCC Framework Capabilities Capture
FCCH Flexible Calling Consultation Hold
FCCH Frequency Correction CHannel
FCCH Frequency Correction Channel
FCCSET Federal Coordinating Committee for Science, Engineering, and Technology
FCD Facsimile Coded Data
FCD Flexible Call Drop
FCD Public Feature Code Trigger
FCDB Feature Control Data Base
FCE Front End Control Element
FCEL Fixed Cellular
FCF Facsimile Control Field
FCF Fast Control Field
FCF Flexible Call Forwarding
FCFA Public Feature Code Trigger and BRI Feature Activator Indicator Trigger
FCFS First-Come First-Served
FCG False Cross or Ground
FCHD Flexible Calling and ISDN Hold Display
FCHS FP Change Sign (80x86 inst)
FCI Flexible Calling Feature Interactions
fci Flux Changes Per Inch
FCI Forward Call Indicator
FCI Forward Call Indicators
FCI Forward Congestion Indication
FCIF Flexible Computer Interface Format
FCIFI Flexible Calling Invoke from Idle
FCIP Forward Call Indication Parameter
FCL Fibre Channel Loop
FCL Fixed Channel List
FCM Fabric Control Message
FCM Functional Call Management
FCM Signaling Traffic Flow Control Messages
FCMP Functional Component Management Plan
FCO FiberCenter OM Acquisition
FCO Field Change Order
FCOT Fiber Central Office Terminal
FCP Ferry Control Protocol
FCP Fibre Channel Protocol
FC-PH Fibre Channel Physical and Signaling Interface
FCPN Flow Control Parameter Negotiation
FCR Function Code Register
FCS Facsimile Communications System
FCS Fast Circuit Switching
FCS Federation of Communications Services (UK)
FCS Fibre Channel Standard
FCS File Control Services
FCS First Customer Shipped
FCS Flexible Charging System
FCS Frame Check Sequence (HDLC, LAPB)
FCST Forecast
FCT Field-Controlled Thyristor (GTO-Thyristor)
FCT Flexible Call Transfer
FCTS Ferry Clip Based Test System
FCU Floating-Point Conversion Unit
FCVC Flow Controlled Virtual Channel
FCX Flexible Calling Transfer
FD FACT Done
FD Family of Documents
FD Fault Detection
FD Fault Display
FD Feature Description
FD File Descriptor
FD File Directory
FD Finished Dialing
FD Floppy Disk
FD Formal Description
FD Format Discriminator
FD Frequency Division
FD Full Duplex
FD Functional Description
FD&R Fault Detection and Recovery
FD/PSK Frequency-Differential/Phase Shift Keyed
FDA Feature Data Area
FDA Food and Drug Administration
FDB Feature Data Block
FDB Feature Database
FDB Functional Description Block
FDBQ Feature Data Block Queue
FDC First Data Corporation
FDC Floppy-Disk Controller
FDCT Forward Discrete Cosine Transform
FDD Fault Detection Driver
FDD Floppy Disk Drive
FDD Frequency Division Duplex
FDD Frequency Division Duplexing
FDDI Fiber Distributed Data Interconnect
FDDI Fiber Distributed Data Interface
FDDI Fibre (Optic) Distributed Data Interface
FDDI Fibre-Distributed Data Interface
FDDI/DAX Fibre Distributed Data Interface Dual Attach
FDDI-II FDDI II
FDDSF Field Direction-Delay-Spread Function
FDE Facility Deactivated message
FDE Feature Designer Environment
FDE Feature Development Environment
FDE Frame Development Environment
FDE Frequency-Domain Equalization
FDE Full Duplex Ethernet
FDER Field Data Entry Rules (CCA/VTS)
FDF (Optical) Fibre Distribution Frame
FDF Fiber Distributing Frame
FDF Fiber Distribution Frame
FDH Full-Duplex Handshake
FDHP Full-Duplex Handshaking Protocol
FDI Feeder Distribution Interface
FDI Fiber Distribution Interface
FDI Functional Description Inspection
FDIS Final Draft International Standard
FDK Frame Developer's Kit
FDL Facility Data Link
FDLC FDL Control Register
FDM Feature Description Manual
FDM Frequency Division Multiplex
FDM Frequency Division Multiplexed
FDM Frequency Division Multiplexing
FDMA Frequency Division Multiple Access
FDN Features Denied
FDN Fiber Distribution Network
FDN Fixed Dialing Number
FDN Foreign Directory Name
FDN Forward-to Directory Number
FDNR Frequency-Dependent Negative Resistor
FDNZ First Digit Not Zero
FDOC Feature Document
FDOC Focused Destination Overload Control
FDOS Floppy-Disk Operated System
FDPC Font Development and Promotion Center
FDPLL Fully-Digital Phase-Locked Loop
FDR Frequency Dependent Rejection
FDS Fundamental Data Structure
FDT File Descriptor Table
FDT Formal Description Technique
FDT Formal Design Technique
FDT Framework Design Team
FDT Framework Development Team
FDT Full Digitone
FDTD Finite Difference Time-Domain
FDTS Formal Description Techniques
FDU Floppy Disk Unit
FDX Full Duplex
FDX Full DupleX operation
FE Family of Equipment
FE Far End
FE Finite Element
FE Format Effector
FE Frame Erasure
FE Framing Error
FE Function Element
FE Functional Element
FE Functional Entity
FE FunkEntstörung (ÖVE: FA-FE)
Fe Nominal Channel Centre Frequency
FEA Finite Element Analysis
FEA Functional Entity Action
FEAC Far End Alarm Channel
FEAC Far-End Alarm and Control
FeAfD Fetnsprechauftragsdienst (Call Forward to Message-Taking Service)
FEAL Fast Encipherment Algorithm
FEAM Format Effector Action Mode
FEAM Functional Entity Access Manager
FEAT Feature
FEATSIM Feature Simulation
FEATSIM Feature Simulator
FEBE Far End Block Error
FEC Forward Error Correction
FEC Forwarding Equivalence Class
FEC Forwarding Equivalency Class
FECG Foetal Electro Cardio Gram
FECN Forward Explicit Congestion Notification
FECV Far-End Code Violation
FED Field Emission Display
FED Field-Emitter Display
FED STD FEDeral government STanDard (USA)
FEDIX Federal Information Exchange
FEFA Far End Failure
FeHAs Fernsprechhauptanschluss (Telephone Main Terminal)
FEI Frame Erasure Indication
FELB Far-End Loopback
FELP Far-End Loop Test
FEM Finite Element Methode
FEMF Foreign Electromotive Force
FEN Forsythe-Edwards Notation
FEOFF Far-End Office
FEP Fluorinated Ethylene Propylene ("Teflon" Fluorocarbon Resin)
FEP Front End Processor
FEP Front-End Processor
FEPC Far End Point Code
FEPO Far End Processor Outage
FEPS Facility and Equipment Planning System
FEPS Fault Event Processing System
FER Frame Erasure Rate
FER Frame Erasure Ratio
FER Frame Error Rate
FeRAM Ferroelectric RAM
FERETS Foreign Exchange Routine Evaluation Testing System
FERF Far End Receive Failure
FERF Far End Reporting Failure
FERF Far-end Receive Failure Message
FES Fixed Earth Station
FES Frequency Encoding Signal
FES Frequency Exchange Signalling
F-ES Fixed End System
FESA Forced Emergency Stand Alone
FESS Flywheel Energy Storage System
FET Field Engineering Terminal
FET Field-Effect Transistor
FET Field-Effect Transistor
fet Functionally Equivalent To
FETM Format Effector Transfer Mode
FEU Floating-Point Execution Unit
FEV Far End Voice
FEV Feature Event
FeV Fernsprechvermittlungsbetrieb (Telephone Switching Office)
FEX Foreign Exchange
FEXT Far-End Crosstalk
FF Fast Feature
FF Fast Forward
FF Field Function
FF First-Fit
FF Fixed Filter
FF Flip-Flop
ff Following
FF Form-Feed (ASCII Character)
FF&P Features, Functions, and Performance
FFAPI File Format Applications Programming Interface
FFC Free Format Coding
FFDT FDDI Full-Duplex Technology
FFH Fast Frequency Hopping
FFII Future Forum II
FFM First Failure to Match
FFM Functional Feature Management
FFOL FDDI Follow-On LAN
FFP Features, Functions & Performance
FFQ Fluid-Flow Queuing
FFRB Field Failure Review Board
FFRDC Federally Funded R&D Center
FFRN Four-Fiber Ring Node
FFS Fast File System
FFS For Further Study
FFSK Fast Frequency-Shift Keying
FFT Fast Fourier Transform
FG Feature Group
FG ForeGround
FG Frame Ground
FG Framework Ground
FG Functional Group
FGA Feature Group A
FG-A Feature Group A
FGASO Feature Group A Serving Office
FGB Feature Group B
FG-B Feature Group B
FGBA Feature Group B Area
FGBEO1 Feature Group B End Office Type 1
FGBEO2 Feature Group B End Office Type 2
FGBEO3 Feature Group B End Office Type 3
FGBT Feature Group B Tandem Switch
FGC Feature Group C
FG-C Feature Group C
FGCS Fifth Generation Computer System
FGD Feature Group D
FG-D Feature Group D
FGE Feature Group E
FG-E Feature Group E
FGF Feature Group F
FG-F Feature Group F
FGL Forth Generation (Programming) Language
FGND Frame Ground
FGR Frame Ground Reference
FGW Floor Ground Window
FH Fixed Host
FH Frame Handler
FH Frame Handler function
FH Frequency Hopping
FH/SS Frequency Hopping Spread Spectrum
FHD Fixed Head Disk
FHNR Fixed Nonhierarchical Routing
FHR Fixed Hierarchical Routing
FHSS Frequency Hopping Spread Spectrum
FI Fabric Interface
FI Fabric Interface
FI Facility Information
FI FACT Identified
FI Fault Insertion
FI Feature Indication
FI Feature Indication Information Element
FI Feature Indicator(s)
FI Feature Interaction
FI Format Identifier
FI Format Indicator
FI Function Index
fi Internet country code for Finland
FI ISO country code for Republic of Finland
FIAT Functional Interactive Asynchronous Transaction
FIB Fast Input Buffering
FIB Forward Indicator Bit
FIB Forwarding Information Base
FIBO Front-In Back-Out
FIBR Forward Indicator Bit Received
FIBT Forward Indicator Bit Transmitted
FIBX Forward Indicator Bit Expected
FIC FBus Interface Controller
FIC F-Bus Interface Controller
FIC Flight Information Centre
FID Feature Identifier
FID Feature Interaction Detection
FID Federation International de Documentation
FID Field Identifier
FID File Identifier
FID Fixed station IDentity
FID Format IDentification (SNA)
FID Format Identifier
FID Frame Identification
FIDB Feature Information DataBase
FIDDI FIbre Distributed Data Interface
FIDN Feature Indicators Per DNCT
FIE Facility Information Element
FIEE Fellow of Institution of Electrical Engineers (UK)
FIEEE Fellow of Institute of Electrical and Electronics Engineers, Inc. (US)
FIEIE Fellow of Institution of Electronics and Electrical Incorporated Engineers (UK)
FIF Facsimile Information Field
FIF Fractal Image Format
FIFO First In, First Out (Memory)
FIFO First-In, First-Out
FIG Flash Ignore
FIG Floating Figure (HTML tag)
FIGS FIle Separator
FIHMBS Feature Indicators Per Hunt Make Busy Application Set
FIL Feature Indication Lamp
FILO First-In, Last-Out
FILR Feature Indication Lamp Refresh
FIM Facing Identification Mark
FIM Feature Interaction Management
FIM Feature Interaction Manager
FIM Fiber Interface Module
FIM-A Facing Identification Mark: Courtesy Reply Mark
FIM-C Facing Identification Mark: Business Reply Mark
FIMWN Feature Indication Message Waiting Notification
FIN Facility Information message
FIN Feature ID Number
FIN Finish flag
FIP Fetch Instruction Pointer
FIP Flourescent Indicator Panel
FIP Functional Integration Point
FIPA Federation for Intelligent Physical Agents
FIPS Federal Information Processing Standard (USA)
FIR Fast Infrared
FIR Fault Indication Register
FIR Finite Impulse Response (filter)
FIR Full Intra Request
FIR Full Intra-frame Request
FIRD Feature Interaction Rule Distribution
FIRGG Feature Interaction Rule/Guidelines Generation
FIRST Forum of Incident Response Teams
FIS Floating Instruction Set
FIS Functional Interface Specification
FISHS Feature Indicators Per Stop Hunt Application Set
FISU Fill-In Signal Unit
FIT Failure In Time
FIT Failure Intensity Trend
FIT Failures in 10+9 component hours
FIT Fault Insertion Testing
FIT Focused Improvement Team
FIT Framework Integration Team
FIT Fully Initializing Terminal
FIT Fully-Initializing Terminal
FIT Function Integrity Test
FIT Functional Integration Testing
FITCE Federation of the Telecommunication Engineers of the EC(F)
FITE Forward Interworking Telephone Event
FITL Fiber In The Loop
FITS Flexible Image Transport System
FITS Functional Interpolating Transformation System
FIU Facilities Interface Unit
FIU Facsimile Interface Unit
FIU Fingerprint Identification Unit
FIU Florida International University
FIX Federal Internet Exchange
FJ ISO country code for Fiji
FK Foreign Key
FK ISO country code for Falkland Islands (Malvinas)
FKM Feature Key Management
FKP MDII: Address Signaling Error- False Key Pulse
FKTO Fernmeldekontonummer (Telecommunications Account Number)
FL Failure
FL Fault-Locate
FL Feature List
FL Flash
FL Foreign Listing
FL Fully-Restricted Line
FL U.S. postal code for Florida
FLAG Fiberoptic Link Around the Globe
FLARE Fault Location and Alarm Reporting
FLC Ferroelectric Liquid Crystal
FLC Fiber Loop Carrier
FLC Fixed Length Code
FlCA Flexible Channel Allocation
FLCC Functional Line Card Code
FLCS Fibreoptic Low-cost Connector System (Motorola Inc.)
FL-CU Fiber Loop Central Unit
FLD FieLD
FL-DU Fiber Loop Distribution Unit
FLEN Frame LENgth
FLEX FlexCall
FLEX DID Flexible Direct Inward Dialing
FLEXI Flexible Intercept
FL-I ISDN Fully Restricted Line
FLIC Fiber Link Interface Chip
FLIC Fiber Link Interface Controller
FLIH First Level Interrupt Handler
FLINK Flash/Wink
FLIR Forward-Looking Infra-Red (Military Avionics)
FLIS Fiber Link Interface Shelf
FLIS Fiberized Link Interface Shelf
FLL Frequency-Locked Loop
FL-LA Fiber Loop Line Amplifier
FLO Fixed Link Option
flo Fixed Link Option
FLO Fully-Restricted Originating Line
FLOC Flexure Lift-Off Contact (Relays)
FLO-I ISDN Fully-Restricted Originating Line
FLOP Floating Point Operation
FLOPS Floating Point Operations Per Second
FLORICO Florida-Puerto Rico submarine cable
FLOW Flow Through Provisioning
FLRN Foreign Location Routing Number
FLS Flash Utility
FLS Free Line Signal
FLS Free Terminating Line Service
FLT Fault
FLT Float Voltage
FLT Fully-Restricted Terminating Line
FLT-I ISDN Fully-Restricted Terminating Line
FLX Fiber Loop Access
FM Fabric Management
FM Facility Monitoring
FM Failure to Match
FM Fault Management
FM Fault Monitor
FM Feature Manager
FM Focused Maintenance
FM Force Management
FM ForM
FM Frame Memory
FM FrameMaker
FM Frequency Management (CEPT)
FM Frequency Modulation
FM Function Management (SNA)
FM ISO country code for Federated States of Micronesia
FM SLP Feature Management Service Logic Program
FMA Failure Mode Analysis
FMA Fast Matrix Architecture
FMA First Market Application
FMA FRAMES Multiple Access
FMA Fused Multiply-Add
FMAC Facility Maintenance and Administration Center
FMAC Floating-Point Multiply-and-Accumulate
FMAS Facility Management System
FMB Fabric Motherboard
FMB Functional Message Block
FMBS Frame-Mode Bearer Services
FMC Fixed Message Cycle
FMC Fixed/Mobile Convergence
FMC Flight Management Computer
FMC Force Management Center
FMCRT Force Management CRT
FMCT Formal Methods in Conformance Testing
FMCW Frequency Modulated Continuous Wave
FMD Follow-Me Diversion
FMD Function Management Data
FMEA Failure Mode and Effect Analysis
FMEA Fault Modes and Effects Analysis
FMECA Fault Modes, Effects and Criticality Analysis
FMFB Frequency Modulation Feedback
FM-FDM Frequency Modulated-Frequency Division Multiplexed
FMH Function Management Header
FMHS Flexible Material-Handling System
FMID Fixed part MAC Identity
FMIF Frame Mode Information Field
FMIP FMI Protocol
FMK Functional Multiprocessing Kernel
FMM Finite Message Machine
FMO Future Method of Operation
FMP Feature Message Processor
FMP Functional Multiprocessing
FMR Field Management Reporting
FMR Follow Me Roaming
FMR Frequency Modulation Receiver
FMS Fleet Management Service
FMS Flexible Manufacturing System
FMS Flight Management System
FMS Force Management System
FMS Forms Management System
FMSA Fault Management Switch Agent
FMSLP Feature Manager Service Logic Program
FMSM Fault Management Summarization Manager
FMT Fiber Multiplex Terminal
FMT Format
Fmt Format
FMT Frequency Modulation Transmitter
FMTV Frequency Modulated TeleVision
FMU Fan Management Unit
FMU Fan Mount Unit
FMV Foreign Market Value
FMVFT Frequency Modulation Voice Frequency Telegraphy
FN DDOC Section: Functional Description and Specification
FN Facility Number
FN Feature Node
FN Finding Name
FN FiNish
FN Forwarding Number
FN Frame Number
fn Function
FN Functional Description
FN Functional Specification
FN Functionality
FNA Call Forward No Answer Allowed
FNA FLAG Network Architecture
FNA Functional Network Architecture
FNAL Feature Not Allowed Treatment
FNAMEPRV Forced Name Privacy
FNB Function Block
FNC Federal Networking Council
FNC FTS Node Controller
FNC Fujitsu Network Communications
FND Call Forward No Answer Denied
FNLTREAT Final Treatment
FNN Financial News Network
FNO Free Number Origination
FNOC FLAG Network Operations Center
FNOI Further Notice of Inquiry
FNP Front-End Network Processor
FNPA Foreign Numbering Plan Area
FNPRM Further Notice of Proposed Rule Making
FNS Fixed Night Service
FNS Fujitsu Network Switching
FNSI Feature Node/Service Interface
FNT Font Selection
FNT Free Number Terminating
FNU Floatingt-Point Normalization Unit
FNV Future Network View
FNX Extended Function Block
FO Fan-Out
FO Fiber Optic
FO Fixed Output
FO Flash Override
FO Follow-On
FO ISO country code for Faroe Islands
FOA First Office Application
FOA Flexible (Call) Origination Authorization
FOAC Fibre Optic Active Component
FOBP Fibre Optic Back Pointer
FOBS Flexible Call Observing
FOC Faint Object Camera
FOC Fiber Optic Crossconnect
FOC Fiber Optics Communications
FOC Firm Order Confirmation
FOC Flow of Control
FOC Follow-On Call
FOCC Forward Control Channel
FOCS Fiber Optic Communication Systems
FODA Feature Oriented Domain Analysis
FOF Freeze-Out Fraction
FOIRL Fiber Optic Inter-Repeater Link
FOM Factor of Merit
FOM Figure of Merit
FOMAS Fiber Optic Multi-Media Access System
FOMAU Fiber Optic Medium Attachment Unit
FOMDI Fiber Optic Medium Dependent Interface
FON Font file
FOOBAR FTP Operation Over Big Address Records
FOOS Force Out Of Service
FOOT Framework for Object Oriented Testing
FOR FS FOR Further Study
FORM Formatter
FORTE FORmal TEchniques
FORTRAN FORmula TRANslation (programing language)
FORTRAN Formula Translator
FOS Fiber Organizing System
FOSI Format Output Specification Instance
FOT Fiber Optic Terminal
FOT Fiber Optic Transmission
FOT Forward-Transfer Message
FOT Forward-Transfer signal
FOT Frequence Optimale de Travail
FOTAG Fiber Optic Technical Advisory Group (IEEE)
FOTP Fiber Optic Test Procedure
FOTS Fiber Optic Terminal System
FOTS Fiber Optic Transmission System
FOURCC Four-Character Code
FOV Field Of View
FOX Fiber Optic Extender
FOX Field Oxide
Fox Fox Network
FP Fabry-Perot
FP Facilities Processor
FP Facility Processor
FP Fast Paging
FP Feature Processing
FP Feature Processor
FP Field Patch
FP File Pointer
FP File Processing
FP File Processor
FP Fixed Part
FP Flat Pack
FP Flat Package
FP Floating Point
FP Format Prefix
FP Frame Pointer
FP Freephone
FP Full Period
FP Function Processor
FP Functional Processor
FP Functional Programming
FPA Floating Point Accelerator
FPAD Facsimile Packet Assembly/Disassembly
FPAM Fabric Power and Alarm Module
FPC Fan Power Control
FPC Foundation Peripheral Controller
FPC Functional Progression Chart
FPCP Floating Point Co-Processor
FPCR Floating-Point Control Register
FPD File Processor Device
FPD Foreign Potential Detector
FPDP Front Panel Data Port
FPDU FTAM Protocol Data Unit
FPE Feature Processing Environment
FPECR Floating-Point Exception Cause Register
FPEE Floating-Point Exception Envelope
FPF Facility Parameter Field
FPF Feature Processing Framework
FPG Feature Planning Guide
FPG Functional Parameter Group
FPGA Field-Programmable Gate Array
FPH Free PHone (supplementary service)
FPHi Freephone Indicators
FPHS1 Floating-Point Source 1 Operand High Register
FPHS2 Floating-Point Source 2 Operand High Register
FPI Family Programming Interface
FPIAR Floating-Point Instruction Address Register
FPIT Floating-Point Imprecise Operation Type Register
FPLA Field Programmable Logic Array
FPLD Field Programmable Logic Device
FPLF Field Programmable Logic Family
FPLMTS Future Public Land Mobile Telecommunication System(s)
FPLMTS Future Public Land Mobile Telecommunications Services
FPLS Future Public Logic System/Sequencer
FPLS1 Floating-Point Source 1 Operand Low Register
FPLS2 Floating-Point Source 2 Operand Low Register
FPM Fast Packet Multiplexing
FPM Fast Page Mode
FPM Feet Per Minute
FPM Fiber Peripheral Module
FPMH Failures Per Million Hours
FPN Freephone Number
FPO Frame Pointer Optimization
FPO Frequency Planning Organisation
FPOM Feature Processing Off-Site Meeting
FPOM FPE Offsite Meeting
FPP Floating Point Processor
FPPT Floating-Point Precise Operation Type Register
FPR Floating-Point Register
FPRH Floating-Point Result High Register
FPRL Floating-Point Result Low Register
FPRT DMS-Core Footprint
FPS Fast Packet Switching
FPS Favorite Picture Selection
FPS Feature Plan Specification
FPS Foot,Pound,Second (system of measurement)
fps Frames Per Second
FPS Framing Pattern Sequence
FPS/FE Framing Pulse Synchronization-Framing Extended
FPSCR Floating-Point Status and Control Register
FPSP Floating Point Support Package
FPSR Floating-Point Status Register
FPT Forced Perfect
FPU Floating Point Unit
FPV Field Product Validation
FPV Floating Point Value
FPY Failures Per Year
FQ Fair Queuing
FQDN Fully Qualified Domain Name
FR Failure Rate
FR Family of Requirements
FR Feature Reviewed
FR Fixed Routing
FR Flashing Recall
FR Flat Rate
FR FN Release
FR Force Release
FR FRagment
FR Frame
FR Frame Relay
FR Frame Relaying
FR Frame Relaying technique
FR Frame Reset
FR Frames
FR Frequency Response
FR Full Rate
FR Fully-Restricted Line
FR Functional Specification Reviewed
FR Functionality Review
fr Internet country code for France
FR ISO country code for French Republic (France)
F-R Final Operators to Required Operators
FR&O First Report and Order
FR_SS Frame Relay Switching System
FRA Fixed Radio Access
FRA Flat Rate Area
FRAD Frame Relay Access Device
FRAD Frame Relay Assembler/Disassembler
FRAD Frame Relay Assembler/Disassembler Device
FRAM Ferroelectric RAM
FRAM Ferroelectronic Random Access Memory
FRAMES Future Radio Wideband Multiple Access Systems
FRAP Frame Relay Access Processor
FRAR FBUS Rate Adapter and Repeater
FRB Faultsman's Ringback
FRBBS Frame Relay Backbone Service
FRBS Frame Relay Bearer Service
FRC Fault Reporting Center
FRC Final Routing Center
FRC Functional Redundancy-Checking
FRC Functional Reference Configuration
FRCD Forced
FRDS Failure Resistant Disk System
FRDS+ Failure Resistant Disk System Plus
FRE Fully Restricted
FRED Frame Editor
FREDFET Fast-Reverse Epitaxal Diode Field-Effect Transistor (Philips Inc)
FREL Feature Release
FREL Forecast Release
FREQ Frequency
FRF Frame Relay Forum
FRFH Frame Relay Frame Handler
FRI Frame Relay Interface
FRI Frame Relaying Information
FRIED Friedrichschaffen
FRIU Frame Relay Interface Unit
FRJ Facility Reject Message
FRL Facility Restriction Level
FRL Force Release message
FRL Frame Representation Language
FRL Frequently Requested Listing
FRLS Force Release
FRM Fast Resource Management
FRM Forward Resource Management
frm FrameMaker File
FRM Functional Reference Model
FRMR Frame Reject
FRN File Reference Number
frn File Reference Number
FRN Fragmentation Reference Number
FRNO Frame Number
FRO Fire Reporting System Originating
FRO Fire Reporting System Origination
frO frame O
FROM Fusable (Link) Read-Only Memory
FRP Fast Reservation Protocol
FRP Fault Report Point
FRP Final Redirecting Party
FRPH Frame-Relay Protocol Handler
frpi Flux Reversals Per Inch
FRPOS Frame Position
FRPS Frame position
FRQ Facility Request message
FRR Flexible Reroute
FRR Frame Retransmission Rate
FRS Family Radio Service
FRS Fire Reporting System
FRS Flexible Route Selection
FRS Forward Ready Signal
FRS Frame Relay Service
FRS Frame Relay Switch
FRS Fully Restricted Station
FRSC Fiber Remote Switching Center
FRSF Frame Relay Service Function
FRSS Frame Relay Switching System
FR-SSCS Frame Relaying Service-Specific Convergence Sublayer
FRT Fire Reporting System Terminating
FRT Fire Reporting System Termination
FRTE Frame Relay Terminating Equipment
FRTT Fixed Round-Trip Time
FRU Field Replacement Unit
FRU Field-Replaceable Unit
FRU Flexible Reuse
FRWK Framework
FS F Segment
FS FACT Started
FS Failed Screening
FS Failed Seconds
FS Fast Select
FS Fast Store
FS Feature Specification
FS Federal Standard
FS Field Separator
FS Field Support
FS Figure Shift
FS File Separator
FS File System
FS Fixed Service
FS Fixed Subscriber
FS For Sale
FS Frame Signaling
FS Frame Status
FS Frame Switching
FS Frequency Shift
FS Full Scale
FS Full Screen
FS Function Selector
FS Functional Signaling
FS Functional Specification
FS Functional Standard
FS Further Study
F-S Fiat-Shamir
FSA Fast Select Acceptance
FSA Fiber Serving Area
FSA Finite State Automata
FSA Formatter/Storage Agent
FSAN Full Services Access Network
FSB Feature State Block
FSB Functional Signaling Block
FSB Functional Specification Block
FSC Far-end Signal Canceller
FSC Frame Supervisory Controller
FSC Freephone Service Centre
FSC FTS Subnetwork Controller
FSD Feature Specification Document
FSD Feature-Specific Doc