ABBREVIATION
|
FULL TEXT
|
A |
Address
field |
A |
Ampère |
Å |
Angström |
| A/D |
analogue-to-digital |
| A/S |
Asynchronous/Synchronous |
| a1 |
a-wire
connection at the terminal equipment input port |
| 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 |
Application
Association |
| AAC |
Application
Access Conditions |
| AAL |
ATM
Adaptation Layer |
| AARE |
A-Associate
REsponse |
| AARQ |
A-Associate
ReQuest |
| AAS |
Abbreviated
Address Signal |
| AAV |
Agile
Autonomous Vehicle (Four-Legged Robot Vehicle) |
| AB |
Access
Burst |
| AB |
Automated
Bibliography |
| ABB |
Assea
Brown Boveri (S-D-CH) |
| ABC |
Automatic
Background Control (video) |
| ABC |
Automatic
Bass Control |
| ABC |
Automatic
Brightness Control |
| ABM |
Asynchronous
Balanced Mode |
| ABS |
ABSolute
|
| ABS |
Acrylonitrile
Butadiene Styrene copolymer (plastic) |
| ABTT |
Advisory
Board on Technical Trends (ISO-IEC) |
| AC |
ACcept
|
| AC |
ACceptor
control |
| AC |
Access
Class (C0 to C15) |
| ac |
alternating
current |
| AC |
Alternating
Current |
| AC |
Application
Context |
| AC |
Assignment
Channel |
| AC |
Authentication
Centre |
| AC |
Authentication
Code |
| AC |
Automatic
Control |
| ACA |
Advanced
Computer Application (IIASA' group) |
| ACARD |
Advisory
Council for Applied Research and Development |
| ACAU |
Automatic
Calling and Answering Unit |
| ACB |
ACcess
Barred signal |
| ACC |
ACCepted
|
| ACC |
ACCes
|
| ACC |
ACCmulator
|
| ACC |
Area
Control Centre |
| ACC |
Australian
CCITT Committee |
| ACC |
Automatic
Congestion Control |
| ACCH |
Associated
Control CHannel |
| ACCT |
ACCes
Time |
| ACCY |
ACCuracY
|
| ACD |
Automatic
Call Distribution |
| ACD |
Automatic
Cash Dispenser |
| ACD |
Average
Call Distance |
| ACDF |
Access
Control Decision Function |
| ACE |
Advanced
Computing Environment (Compaq) |
| ACE |
Automatic
Cable Expertise (ATT) |
| ACE |
Automatic
Calling Equipment |
| ACEC |
Advisory
Committee on EMC (IEC) |
| ACET |
Advisory
Committee on Electronics and Telecommunications |
| ACF |
Access
Control Field (IEEE 802) |
| ACF |
Advanced
Communication 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) |
| ACI |
Access
Control Information |
| ACIA |
Access
Control Inner Area |
| ACIA |
Asynchronous
Communication Interface Adapter |
| ACID |
Atomicity,
Consistency, Isolation, and Durability (X.860) |
| ACITS |
Advisory
Committee on Information Technology Standardization (SOG-IT) |
| ACK |
ACKnowledgement
|
| ACK/NACK |
Positive/Negative
ACKnowledgement |
| ACL |
Access
Control List (X.800) |
| ACL |
Advanced
CMOS Logic |
| ACM |
Access
Control Manager |
| ACM |
Accumulated
Call Meter |
| ACM |
Address
Complete Message |
| ACM |
Association
for Computing Machinery |
| ACMS |
Application
Control and Management System (DEC) |
| ACN |
ACount
Number |
| ACN |
Actual
Carrier Number |
| ACOS |
Advisory
Committee On Safety (IEC) |
| ACP |
Adjacent
Channel Power |
| ACP |
African,
Caribbean and Pacific countries |
| ACPM |
Association
Control Protocol Machine (ACSE) |
| ACR |
Abandon
Call and Retry |
| ACR |
Automatic
Call Recording |
| ACR |
Automatic
Character Recognition |
| ACRTC |
Advanced
Cathode Ray Tube Controller |
| ACS |
Access
Control Store (CCA/VTS) |
| ACS |
Access
Control System (DAB) |
| ACS |
Advanced
Communication Service (Bell) |
| ACS |
Advanced
Communication Services |
| ACS |
Assembly
Control System |
| ACSA |
Access
Control Specific Area |
| ACSE |
Association
Control Service Element |
| ACSSB |
Amplitude-Compounded
Single-SideBand modulation |
| ACT |
Audiographic
Teleconference Terminal |
| ACTE |
Advisory
Committee for Terminal Equipment |
| ACTE |
Approvals
Committee for Terminal Equipment |
| ACTOM |
Advisory
Committee on Technical and Operational Matters (of Inmarsat) |
| ACTS |
Advanced
Communication Technology Satellite |
| ACTS Programme |
Advanced
Communications Technologies and Services Programme |
| ACTV |
Advanced
Compatible TeleVision |
| ACU |
Antenna
Combining Unit |
| ACU |
Antenna
Coupling Unit |
| ACU |
Automatic
Calling Unit |
| ACW |
Address
Code Word |
| AD |
Addendum
Document to an OSI standard (ISO) |
| AD |
ADdress
|
| AD |
Application
Directory |
| ADA |
AutoDirectional
Antenna (Blaupunkt) |
| ADB |
Apple
(Inc.) Desktop Bus |
| ADC |
ADd
with Carry |
| AdC |
Address
Code |
| ADC |
ADdress
complete, Charge |
| ADC |
ADministration
Centre |
| ADC |
Analogue
to Digital Converter |
| ADCCP |
Advanced
Data Communications Control Protocol |
| ADDMD |
ADministrative
Directory Management Domain |
| ADF |
Adaptive
Digital Filter |
| ADF |
ADdress
Field |
| ADF |
Application
Data File |
| ADF |
Automatic
Direction Finder |
| ADGT |
Advisory
Group on Data Transmissions |
| ADI |
ADdress
Incomplete signal |
| ADL |
Animation
Description Language |
| ADLC |
Advanced
Data Link Control |
| ADLC |
Advanced
Data Link Controller |
| ADM |
Adaptive
Delta Modulation |
| ADM |
Add-Drop
Multiplexor |
| ADM |
ADMinistrative
department (ETSI) |
| ADM |
Asynchronous
Disconnect Mode |
| ADMA |
Amplitude
Division Multiple Access |
| ADMD |
ADministration
Management Domain (MHS) |
| ADN |
Abbreviated
Dialling Number |
| ADN |
ADdress
complete, No charge |
| ADP |
Automatic
Data Processing |
| ADPACS |
Automated
Data Processing And Communication Service |
| ADPCM |
Adaptive
Delta-PCM |
| ADPCM |
Adaptive
Differential Pulse Code Modulation |
| ADPS |
Automatic
Data Processing System |
| ADPT |
ADaPTor,
ADaPTer |
| ADS |
Administration
and Data Server (HICOM) |
| ADS |
Advanced
Digital System |
| ADSL |
Asymmetrical
Digital Subscriber Line |
| ADT |
Abstract
Data Type |
| ADTE |
Asynchronous
Data Terminal Equipment |
| ADTS |
Automated
Data and Telecommunication Service |
| ADU |
Automatic
Dialling Unit |
| ADX |
ADdress
complete, coin boX |
| ADX |
Automatic
Exchange |
| AE |
Acceptor
Error |
| AE |
Application
Entity |
| AEA |
American
Electronics Association |
| AeB.N |
Australian
Electronic Business Network |
| AEC |
Acoustic
Echo Control |
| AECMA |
Association
Européenne des Constructeurs de Matériel Aérospatial |
| AEE |
Asociacion
ElEctrotécnica |
| AEF |
Additional
Elementary Functions |
| AEI |
Application-Entity
Invocation |
| AELE |
Association
Européenne de Libre Echange (EFTA) |
| AENOR |
Asociacion
Espanola de NORmalizacion (E) |
| AES |
Aircraft
Earth Station |
| AF |
Access
Facility |
| AF |
Access
Function |
| AF |
Alternative
Frequencies (RDS) |
| AF |
Audio
Frequency |
| AFC |
Automatic
Frequency Control |
| AFCEE |
Association
Française du Commerce et des Echanges Electroniques |
| AFFUT |
Association
Française des Utilisateurs du Téléphone et des Télécomunications |
| AFI |
Authority
and Format Identifier (NSAP) |
| AFIS |
Aerodrome
Flight Information Service |
| AFM |
Audio
Frequency Modulation (8mm VTR Sony Inc.) |
| AFN |
Address
complete, subscriber Free, No charge |
| AFN |
All
Figure Number |
| AFNOR |
Association
Francaise de NORmalisation |
| AFP |
Automatic
Floating Point |
| AFR |
Annualised
Failure Rate |
| AFR |
Automatic
Field Recognition |
| AFR |
Automatic
Format Recognition |
| AFS |
Andrew
File System (TCP/IP) |
| AFSK |
Audio
Frequency Shift Keying |
| 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 |
| AG |
Advisory
Group (ETSI) |
| AGC |
Advanced
Graphic Controller |
| AGC |
Automatic
Gain Control |
| AGCH |
Access
Grant CHannel |
| AGND |
Analogue
GrouND |
| AGV |
Automatic
Guided Vehicle |
| AH |
Ad
Hoc |
| AH |
Application
Header |
| AH |
Authentication
Header |
| AHG |
Ad
Hoc Group |
| AHPL |
A
Hardware Programming Language |
| Ai |
Action
indicator |
| AI |
Activity
Interrupt |
| AI |
Air
Interface |
| AI |
Alerting
Indication |
| AI |
Artificial
Intelligence |
| AIA |
Application
Integration Architecture (DEC) |
| AIAG |
Automative
Industry Action Group |
| AIEA |
Agence
International de l'Energie Atomique |
| AIEE |
American
Institute of Electrical Engineers |
| AIF |
Additional
Information Field |
| AII |
Additional
Information Indicator |
| AIM |
Advanced
Informatics in Medicine |
| AIN |
Additional
Information Number |
| AIN |
Advanced
Intelligent Network |
| AIP |
Additional
Information Presentation (supplementary service) |
| AIRS |
Automatic
Image Retrieval System |
| AIS |
Alarm
Indication Signal |
| AIS |
Alarm
Indication Signalling |
| AIT |
Additional
Information Type |
| AIT |
Average
Instruction Time |
| AIUR |
Air
Interface User Rate |
| AIX |
Advanced
Interactive eXecutive (IBM/UNIX) |
| AK |
AcKnowledgement
|
| AKM |
Apogee
Kick Motor |
| AL |
ALphabetic
|
| AL |
Ambience
Listening |
| AL |
Application
Layer (OSI) |
| ALC |
Airlines
Line Control (IBM) |
| ALC |
Automatic
Level Control |
| ALE |
Approval
Liaison Engineer (UK) |
| ALERT |
ALERT
function for different types of alert |
| ALFE |
Alert
Logic Filter Editor (Bool and Babbage) |
| ALGM |
ALGorithM
|
| ALGOL |
ALGorithmic
Oriented Language |
| ALP |
Automated
Language Processing |
| ALP |
Automated
Learning Process |
| ALRS |
Admiralty
List of Radio Signals |
| ALS |
Application
Layer Structure (OSI) |
| ALSTTL |
Advanced
Low-power Schottky Transistor-Transistor Logic |
| ALT |
ALTitude
|
| ALU |
Abbreviated
Line-Up |
| ALU |
Arithmetic
and Logic Unit |
| AM |
Access
Module |
| AM |
Accounting
Management |
| AM |
Address
Marker |
| AM |
AlphaMosaic
|
| AM |
Amplitude
Modulation |
| AM/PSK |
Amplitude
Modulation/Phase Shift Keying |
| AMAP |
Adaptive
Mobile Access Protocol |
| A-MAP |
A-field
MAP |
| AMD |
Advanced
Micro Devices |
| AMDS |
Amplitude
Modulation Data System |
| AMF |
Access
Management Function |
| AMI |
Alternate
Mark Inversion |
| AMI |
Alternate
Mark Inversion (digital data transmission format) |
| AMIEE |
Associate
Member of the Institution of Electrical Engineers (GB) |
| AMIS |
Agricultural
Market Intelligence System |
| AMIS |
Audio
Messaging Interchange Specification |
| AMLCD |
Active
Matrix Liquid-Crystal Displays |
| AMM |
Advanced
Memory Management |
| AMM |
Answer
Mode Modem |
| AMN |
Acknowledgement
of Mcu Number |
| AMPS |
Advanced
Mobile Phone System |
| AMR |
Automatic
Message Routing |
| AMRF |
Automated
Manufacturing Research Facility |
| AMS |
Amplitude
Modulation Suppression |
| AMS |
Audiovisual
and Multimedia Service |
| AMSAT |
Radio
AMateur SATellite corporation |
| AMSS |
Aeronautical
Mobile Satellite Service |
| AMT |
Advanced
Manufacturing Technique |
| AMTICS |
Advanced
Mobile Traffic-Information Communications System |
| AMTOR |
AMateur
Telex Over Radio |
| AMU |
Antenna
Matching Unit |
| AMVSB |
Amplitude
Modulation with Vestigial SideBands |
| AN |
Access
Network |
| AN |
Access
Node |
| AN |
Application
Note |
| an |
power
level |
| ANA |
Article
Numbering Association |
| ANAL |
ANALogue
|
| ANC |
ANswer
signal, Charge |
| ANF |
Additional
Network Feature |
| ANG |
Advanced
Networking Group |
| ANI |
Automatic
Number Identification |
| ANIE |
Associazione
nazionale industrie elettrotecniche ed ellettroniche (Italy) |
| ANIEL |
Associación
Nacional de Industria Electronica (Spain) |
| ANL |
Automatic
Noise Limiter |
| ANM |
Advanced
NM (Net/Master, IBM) |
| ANM |
ANswer
Message |
| ANN |
ANswer
signal, No charge |
| ANS |
ANSwer
|
| ANSA |
Advanced
Networked Systems Architecture |
| ANSC |
American
National Standards Committee |
| ANSI |
American
National Standards Institute (US) |
| ANT |
Application
of New Technologies |
| AO |
Acceptor
Operable |
| AO |
Automated
Office |
| AoC |
Advice
of Charge |
| AOC |
Aeronautical
Operational Control |
| AOC |
Automatic
Overload Control |
| AoCC |
Advice
of Charge (Charging) (supplementary service) |
| AOC-D |
Advice
of Charge (Service) - During call |
| AOC-E |
Advice
of Charge (Service) - at End of call |
| AoCI |
Advice
of Charge (Information) (supplementary service) |
| AOCS |
Attitude
and Orbit Control System |
| AOC-S |
Advice
of Charge (Service) - at call Set-up time |
| AOI |
Area
Of Interest |
| AOPS |
Automated
Office Protocol Standard |
| AOQ |
Average
Outgoing Quality |
| AOQL |
Average
Outgoing Quality Level |
| AOR |
Atlantic
Ocean Region (INTELSAT) |
| AOS |
Acquisition
Of Signal |
| AOS |
Attitude
and Orbit control Subsystem |
| AOTS |
Advanced
Orbital Test Satellite |
| AOW |
Asia-Oceania
OSI Workshop |
| AP |
Access
Point |
| AP |
Access
Priority (TETRA) |
| AP |
Administrative
Point |
| AP |
Application
Process |
| AP |
Application
Profile (OSI-AL) |
| AP |
Application
Protocol |
| AP |
Assemblée
Plénière (CEPT, CCIR, CCITT) |
| APA |
Active
Position Addressing |
| APA |
All-point
Addressable (IBM WS capability for vector graphics) |
| APB |
Adaptive
Prediction Backwards |
| APC |
Adaptive
Power Control |
| APC |
Aeronautical
Public Correspondence |
| APC |
Automatic
Phase Control |
| APC |
Automatic
Phase Control (PLL) |
| APC-AB |
Adaptive
Predictive Coding with Adaptive Bit allocation |
| APD |
Automatic
Power-Down (IC) |
| APD |
Avalanche
Photo Diode |
| APDL |
Algorithmic
Processor Description Language |
| APDU |
Application
Protocol Data Unit (OSI-AL) |
| APEC |
Asia-Pacific
Economic Co-operation |
| APF |
Adaptive
Prediction Forward |
| API |
Application
Programming Interface |
| API |
Application-Process
Invocation |
| API |
Asynchronous
Pollable Interface |
| API/CS |
API/Communication
Services |
| APIA |
Application
Programming Interface Association |
| APIA X.400 |
API
Association for X.400 |
| APK |
Amplitude
Phase Keying |
| APL |
Advanced
Programming Language |
| APL |
APpLication
|
| APL |
Average
Picture Level (Video) |
| APM |
Additional
Packet Mode bearer service (CCITT I.122) |
| APM |
Amplitude
Phase Modulation |
| APM |
Auxiliary
Processing Machine |
| APNSS |
Analogue
Private Network Signalling System |
| APOCS |
Atlantic
Provinces Optical Cable System |
| APON |
Asynchronous
Passive Optical Network |
| APP |
Additional
PleniPotentionary conference (ITU) |
| APP |
APplication
Program |
| APPC |
Advanced
Program-to-Program Communication |
| APPN |
Advanced
Peer-to-Peer Network (IBM) |
| APPS |
Advanced
Peripheral Processing Solution (National Semiconductors Inc.) |
| APR |
Alternate
Path Retry |
| APROX |
APPROXimate
|
| APS |
Asynchronous
Protocol Specification |
| APS |
Auxiliary
Power Source |
| APT |
Address
Partition Terminator |
| APT |
Automatic
Programmed Tool |
| APU |
Arithmetic
Processor Unit |
| AQF |
Advanced
Query Feature |
| AQL |
Acceptance
Quality Level |
| AQUARIUS |
A
Query And Retrieval Intractive Utility System |
| AR |
Activity
Resume |
| AR |
Address
Register |
| AR |
Aspect
Ratio |
| AR1 |
Alignment
Range 1 |
| AR2 |
Alignment
Range 2 |
| ARABSAT |
ARAB
SATellite Communications Organization |
| ARB |
ARBitrary
(waveform generator) |
| ARC |
Access
Rights Class |
| ARC |
Adaptive
Rate Conversion |
| ARC |
Automatic
Reception Control (mono/stereo) |
| ARD |
Access
Rights Details |
| ARD |
Arbeitsgemeinschaft
der Rundfunkanstalten der Bundesrepublik Deutschland |
| ARF |
Alarm
Reporting Function |
| ARFA |
Allied
Radio Frequency Agency |
| ARFCN |
Absolute
Radio Frequency Channel Number |
| ARI |
Access
Rights Identity |
| ARI |
Airborne
Radio Instrument |
| ARI |
Autofahrer-Rundfunk-Information
|
| ARI/FCI |
"Address
Recognized Indicator/Frame Copied Indicator (MAC/token ring)" |
| ARIN |
American
Registry for Internet Numbers |
| ARL |
Acoustic
Reference Level |
| ARL |
Audio
Reference Level |
| ARL |
Average
Running Length |
| ARLL |
Advanced
Run-Length-Limited (magnetic recording code) |
| ARM |
Applications
Reference Model |
| ARM |
Asynchronous
Response Mode |
| ARO |
Audio
Receive Only |
| ARP |
Address
Resolution Protocol (TCP/IP-DoD) |
| ARPA |
Advanced
Research Projects Agency |
| ARPOSE |
Specification
de l'ARchitecture et des Protocoles OSI permettant de rendre le services |
| ARQ |
Automatic
Repeat reQuest |
| ARQ |
Automatic
ReQuest for retransmission |
| ARQ |
Automatic
Retransmission reQuest |
| ARR |
Attributes
for Representing Relationship |
| ARRL |
American
Radio Relay League |
| ART |
Automated
Reasoning Tool |
| ARTHUR(1) |
Automatic
Radiocommunication system for Traffic emergency situations on Highways and ARTHUR(2) |
| ARTOB |
Amateur
Radio Transponder On Balloon |
| ARU |
Audio
Response Unit |
| AS |
Activity
Start |
| AS |
Address
Signal |
| AS |
Address
Strobe |
| AS |
Application
Selection |
| AS |
Application
System (IBM) |
| AS |
Area
Selection (TETRA) |
| ASA |
American
Standard Association (ANSI today) |
| asap |
as
soon as possible |
| ASAP |
Automatic
Self-Allocating Processor (Convex Inc. Super Comp.) |
| ASC |
Accredited
Standard Committee |
| ASC |
Application
Service Centres |
| ASC |
Automatic
Selectivity Control |
| ASC |
Automatic
Sensitivity Control |
| ASC |
Automatic
Sequence Control |
| ASCII |
American
Standard Code for Information Interchange |
| ASCOT |
Assessment
of Systems and Components for Optical Telecommunications |
| ASCR |
Asymmetric
Silicon Controlled Rectifier |
| ASDE |
Airport
Surface Detection Equipment |
| ASE |
Application
Service Element |
| ASF |
Administrative
Storage Facility (NAA-DSA-Bull) |
| ASF |
Application
Support Function |
| ASF |
Aspect
Source Flag |
| ASF |
Automatic
Sheet Feeder |
| ASIC |
Application-Specific
Integrated Circuit |
| ASIS |
Application-Specific
Integrated Sensor |
| ASK |
Amplitude
Shift Keying |
| asl |
above
sea-level |
| ASL |
Arithmetic
Shift Left |
| ASLT |
Advanced
Solid Logic Technology |
| ASMA |
Asynchronous
Serial Manchestercode Adapter |
| ASMS |
Advanced
Strategic Missile System |
| ASN |
Actual
Slot Number |
| ASN.1 |
Abstract
Syntax Notation One |
| ASO |
Address
Supporting Organization |
| ASP |
Abstract
Service Primitive |
| ASP |
Active Server Pages |
| ASP |
Assignment
Source Point |
| ASP |
Association
of Service Providers |
| ASP |
Application Service Provider |
| ASR |
Adaptive
Sample Rate |
| ASR |
Alarm
State Request |
| ASR |
Arithmetic
Shift Right |
| ASR |
Automatic
Send/Receive (TTY) |
| ASR |
Automatic
Standard Recognition (television) |
| ASRAM |
Application-Specific
Random Access Memory |
| ASSI |
Alias
Short Subscriber Identity (TETRA) |
| ASTAP |
Advanced
STatistical Analysis Program |
| ASTI |
At
Some TIme |
| ASTM |
American
Society for Testing and Materials |
| ASTP |
Advanced
Systems and Technology Programme |
| ASTTL |
Advanced
Schottky Transistor-Transistor Logic |
| AT |
Access
and Terminals |
| AT |
Advanced
Technology |
| AT&T |
American
Telephone and Telegraph |
| ATA |
Adaptive
Transform Audio coding |
| ATA |
Analogue
Terminals and Access |
| ATAC |
Adaptive
Transformation Audio Coding |
| ATB |
All
Trunks Busy |
| ATC |
Abstract
Test Case |
| ATC |
Adaptive
Transform Coding |
| ATC |
Air
Traffic Control |
| ATC |
Automatic
Threshold Control |
| ATC |
Automatic
Timing Control |
| ATCRBS |
Air
Traffic Control Radar Beacon System |
| ATD |
Asynchronous
Time Division |
| ATDM |
Asynchronous
Time Division Multiplex |
| ATE |
Automated
Test Equipment |
| ATE |
Automatic
Telephone Exchange |
| ATE |
Automatic
Test Equipment |
| ATF |
Advanced
Tactical Fighter (United States Air Force) |
| ATG |
Automatic
Test Generator |
| ATIS |
Automatic
Terminal Information Service |
| ATLAS |
Abbreviated
Test Language for Avionics Systems |
| ATM |
Abstract
Test Method |
| ATM |
Advanced
Testing Methods (former ETSI TC, now MTS) |
| ATM |
Asynchronous
Transfer Mode |
| ATM |
Automatic
Teller Machine (Bancomat) |
| ATME |
Automatic
Transmission Measuring Equipment |
| ATMR |
ATM
Ring |
| ATMS |
Advanced
Text Management System |
| ATN |
ATtentioN
(IEEE-488 bus signal) |
| A-TO-D |
Analogue-to
Digital |
| ATPC |
Automatic
Transmit Power Control |
| ATR |
Anti-Transmit-Receive
tube |
| ATR |
Audio
Tape-Recorder |
| ATR |
Automatic
Tape Reader |
| ATR |
Automatic
Transmitter |
| ATS |
Abstract
Test Suite |
| ATS |
Administrative
Terminal System |
| ATS |
Air
Traffic Services |
| ATS |
Applications
Technology Satellite |
| ATS |
Asynchronous
Time Sharing |
| ATSC |
Advanced
Television Systems Committee |
| ATSC |
Australian
Telecommunication Standardization Authority |
| ATSI |
Alias
TETRA Subscriber Identity |
| ATT |
ATTenuator
|
| ATT (flag) |
ATTach
|
| ATTD |
Avalanche
Transit Time Diode |
| ATTN |
ATTenuatioN
|
| ATU |
Antenna
Tuning Unit |
| ATV |
Amateur
TeleVision |
| AU |
Access
Unit |
| AU |
Administrative
Unit |
| AU |
Answer
Unit |
| AUAP |
Accelerated
Unified Approval Procedure (ETSI) |
| AUC |
Authentication
Center |
| AuC |
Authentication
Centre |
| AUD |
AUDible
|
| AUG |
Administrative
Unit Group |
| AUI |
Attachment
Unit Interface (IEEE 802.3) |
| AUP |
Administrative
Utility Programs (NAA-DSA-Bull) |
| AUPI |
Administrative
Utility Programmatics Interface (NAA-DSA-Bull) |
| AUSTEL |
AUStralian
TELecommunications industry |
| AUT |
AUThority
|
| AUT(H) |
AUThentication
|
| AUTEL |
Asociación
de Usuarios de TELecomunicaciones (E) |
| 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 |
| AUTODIN |
AUTOmatic
DIgital Network |
| AUX |
AUXiliary
|
| AUXP |
AUXiliary
Pattern |
| AV |
AudioVision
|
| AVA |
Attribute
Value Assertion |
| AVC |
Automatic
Volume Control |
| AVD |
Alternate
Voice/Data |
| AVDP |
Advanced
Video Display Processor |
| AVDU |
Audiovisual
Display Unit |
| AVI |
Audio
Video Interleave (multimedia format) |
| AVI |
AudioVisual
Information |
| AVI |
Automatic
Vehicle Identification |
| AVIS |
Audio-Visual
Interactive Service |
| AVLSI |
Advanced
Very Large Scale Integration |
| AVM |
Audio
Visual Management |
| AVMMS |
AudioVisual/MultiMedia
Services (TSAG:ITU-TS) |
| AVR |
Automatic
Voltage Regulator |
| AVR |
Automatic
Volume Recognition |
| AWACS |
Airborn
Warning And Control System (military avionics) |
| AWG |
"American
Wire Gauge (system for specification of wire diameter)" |
| AWGN |
Additive
White Gaussian Noise |
| a-wire |
A-wire
of the two wire PSTN line |
| AX-25 |
Amateur
X.25 Digital Packet Protocol |
| AZ |
AZimuth
|
| AZ-EL |
AZimuth-Elevation
|
