IDI's Extensive List of Computer Related Acronyms with their Definitions From A Through C. New Acronyms are added to these List on a Regular Basis. To visit other pages, use our elevator.
IDI's Networking Acronyms

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A - B
C - D
E - H
I - L
M - O
P - R
S - S
T - Z

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• 2G = Second Generation
  
• 3G = Third Generation
  
• 3GL = Third Generation Language
  
• 3GPP = 3G Partnership Project
  
• 4GL = Fourth Generation Language
  
• A = Amperes
  
• AA = Auto Answer
  
• AAAAA = Anonym Association Against Acronym Abuse
  
• AAC = Advanced Audio Coding
  
• AAL = ATM Adaptation Layer
  
• AAL0 = ATM Adaptation Layer Type 0 refers to raw ATM cells
  
• AAL1 = ATM Adaptation Layer Type 1 supports constant bit rate, time dependent traffic such as voice and video
  
• AAL2 = ATM Adaptation Layer Type 2 reserved for variable bit rate video transfer
  
• AAL3/4 = ATM Adaptation Layer Type 3/4 supports variable bit rate, delay tolerant data traffic requiring some sequencing and/or error detection support
  
• AAL5 = ATM Adaptation Layer Type 5 supports variable bit rate, delay tolerant connection oriented data traffic requiring minimal sequencing or error detection support
  
• AALCP = AAL Common Part
  
• AALM = AAL Management
  
• AAP = Applications Access Point [DEC]
  
• AARP = Appletalk ARP
  
• AASP = ASCII Asynchronous Support Package
  
• AAT = Average Access Time
  
• ABATS = Automatic Bit Access Test System
  
• ABC = Atanasoff-Berry Computer (First digital calculating machine that used vacuum tubes)
  
• ABEL = Advanced Boolean Expression Language
  
• ABEND = Abnormal End
  
• ABI = Application Binary Interface
  
• ABIOS = Advanced BIOS
  
• ABM = Asynchronous Balanced Mode
  
• " = Accunet Bandwidth Manager
  
• ABNF = Augmented Backus-Naur Form
  
• ABR = Available Bit Rate
  
• ABRD = Automatic Baud Rate Detection
  
• ABS = Absolute
  
• ABT = Abort
  
• AC = Alternating Current
  
• ACAP = Application Configuration Access Protocol
  
• ACC = Accumulator
  
• ACD = Automatic Call Distributor
  
• ACE = Advanced Computing Environment [SCO]
  
• " = Adverse Channel Enhancements [Microcom]
  
• " = Automatic Computing Engine
  
• " = Access Control Entry [Microsoft]
• ACF = Advanced Communication Function
  
• " = Access Control Field
  
• ACHEFT = Automated ClearingHouse Electronic Funds Transfer
  
• ACK = ACKnowledge
  
• " = ACKnowledgement flag, TCP header
  
• ACL = Access Control List
  
  
• " = Advanced Cmos Logic
  
• ACM = Association for Computing Machinery
  
• ACMS = Application Control Management System
  
• ACNA = Access Customer Name Abbreviation
  
• ACP = Argus Communications Protocol
  
• " = Ancillary Control Program
  
• " = Auxillary Control Process
  
• ACPI = Advanced Configuration and Power Interface [Microsoft]
• ACS = Asynchronous Communications Server
  
• " = Advanced Communications System
  
• ACSE = Association Control Service Element (ISO/CCITT layer 7)
  
• ACTEF = ACcess TEchnologies Forum
  
• ACTS = Advanced Communications Technology Satellite
  
• " = Automatic Coin Telephone Service [Telephony]
  
• ACUTA = Association of College and University Telecomm
  
• Administrators
  
• ACU = Automatic Calling Unit
  
• ACW = Alternating Continuous Waves
  
• A/D = Analog to Digital conversion
  
• ADA = Automatic Data Acquisitions
  
• " = (Programming Language named after Agusta Ada Lovelace)
  
• ADC = Analog to Digital Converter
  
• " = Adaptive Data Compression (protocol)
  
• ADCCP = Advanced Data Communication Control Procedure
  
• ADCI = Automatic Display Call Indicator
  
• ADF = Adapter Description File (file name extension)
  
• " = Automatic Document Feed
  
• ADI = AutoCad Device Interface (driver)
  
• ADL = Address Data Latch
  
• ADLAT = Adaptive Lattice Filter
  
• ADM = Active Device Mount
  
• ADMD = ADministrative Management Domain [X.400]
  
• ADN = Advanced Digital Network Service
  
• ADO = ActiceX Data Objects
  
• ADP = Automatic Data Processing
  
• ADPCM = Adaptive Differential Pulse Code Modulation
  
• " = Adaptive Data Pulse Code Modulation
  
• ADR = AdDRess
  
• ADS = Application Development Solutions [AT&T]
  
• " = Application Development System
  
• " = Automatic Distribution System
  
• ADSC = Address Status Changed
  
• ADSI = Active Directory Service Interface
  
• ADSL = Assymetric bit rate Digital Subscriber Line
  
• ADSP = AppleTalk Data Stream Protocol
  
• ADSR = Administration of Designed Services Review
  
• " = Attack, Decay, Sustain, Release
  
• ADT = Application Data Types
  
• ADTS = Automated Digital Terminal System
  
• ADU = Analog-Digital-Umsetzer
  
• " = Automatic Dialing Unit
  
• AE = Application Entity
  
• " = Account Executivpplication Engineer
  
• " = Above or Equal
  
• AEB = Analog Expansion Bus [Dialogic]
  
• AEC = Alternate Exchange Carrier
  
• AEP = AppleTalk Echo Protocol
  
• AES = Advanced Encryption Standard
  
• AF = Auxilary carry Flag
  
• AFC = Automatic Font Change
  
• AFCEA = Armed Forces Communications and Electronics Association
  
• AFD = Automatic File Distribution
  
• AFDAS = Accenet Flexible Digital Access Service
  
• AFIWC = Air Force Information Warfare Center
  
• AFII = Association for Font Information Interchange
  
• .AFM = Adobe Font Metrics (file name extension) [Adobe Systems]
  
• AFNOR = Association Francaise de NOrmalisation
  
• AFOSR = Air Force Office of Scientific Research
  
• AFP = AppleTalk Filing Protocol
  
• " = Apple File Protocol
  
• AFS = Andrew File System
  
• AFTP = APPC File Transfer Protocol
  
• AGC = Automatic Gain Control
  
• AGI = Address Generation Interlock
  
• AGP = Advanced Graphics Port
  
• AGU = Address Generation Unit
  
• AI = Artificial Intelligence
  
• " = Access Interface
  
• " = Analog Input
  
• AIA = Air Intelligence Agency
  
• " = Applications Integration Architecture [DEC]
  
• AIFF = Audio Interchange File Format
  
• AIIM = Association for Information and Image Management
  
• AIM = Asynchronous Interface Module
  
• AIN = Advanced Intelligent Network
  
• AIOD = Automatic Identified Outward Dialing
  
• AIS = Alarm Indication Signal
  
• " = Automatic Intercept System
  
• AISB = Association of Imaging Service Bureaus
  
• AISP = Association of Information Systems Professionals
  
• AISPRT = Automated Information Security Policy Review Team
  
• AIX = Advanced Interactive eXecutive (IBM's name for UNIX)
  
• AL = Artificial Life
  
• ALC = Arithmetic and Logic Circuits
  
• " = Automatic Level Control
  
• ALE = Address Latch Enable
  
• ALGOL = Algorithmic Oriented Language
  
• " = ALGOrithmic Language
  
• ALIT = Automatic Line Insulation Testing [Telephony]
  
• ALR = Advanced Logic Research, Inc.
  
• ALSA = Advanced Linux Sound Architecture
  
• ALS = Active Line State
  
• ALT = ALTernate (mode)
  
• ALU = Arithmetic-Logic Unit
  
• AM = Amplitude Modulation
  
• AMA = Automatic Message Accounting
  
• AMANDDA = Automated Messaging and Directory Assistance
  
• AMATPS = Automatic Message Accounting Tele-processing System
  
• AMD = Active Matrix Display
  
• " = Administration Management Domain
  
• " = Advanced Micro Devices, Inc.
  
• AMEL = Active Matrix Electro-Luminescence
  
• AMI = Alternate Mark Inversion (see also NRZ, NRZI, B8ZS)
  
• " = American Megatrends Inc.
  
• AMLCD = Active Matrix LCD
  
• AMMA = Advanced Memory Management Architecture [Everex Systems]
  
• AMPS = Advanced Mobile Phone System
  
• AMR = Audio/Modem Riser
  
• AMRL = Adjusted Main Ring Length
  
• ANAC = Automatic Number Announcemnt Circuit [Telephony]
  
• ANC = All Number Calling [Telephony]
  
  
• ANCOVA = ANalysis of COVAriance
  
• ANI = Automatic Number Identification
  
• ANOVA = ANalysis Of VAriance
  
• ANPX = Advanced News Picture indeX
  
• ANSI = American National Standards Institute
  
• ANW = Advanced Netware
  
• AO = Analog Output
  
• AO/DI = Always Online/Dynamic ISDN
  
• AOE = Application Operating Environment [AT&T]
  
• AOL = America OnLine
  
• AOS = Add Or Subtract
  
• " = Array Of Structures
  
• AP = Application Process
  
• " = Application Processor
  
• " = Adjunct Processor
  
• " = Access Point
  
• APA = All Points Addressable
  
• APAD = Asynchronous Packet Assembler/Disassembler
  
• APAR = Authorized Program Analysis Report [IBM]
  
• APAREN = Address Parity Enable [IBM]
  
• APCUG = Association of PC User Groups
  
• APDU = Application Protocol Data Unit
  
• APF = AppleTalk Filing Protocol
  
• API = Application Programming Interface
  
• APIC = Advanced Programmable Interrupt Controller
  
• APL = A Programming Language
  
• APM = Advanced Power Management
  
• APNIC = Asian Pacific Network Information Center
  
• APOP = Authenticated POP
  
• APP = A PPlication Data
  
• APPC = Advanced Program-to-Program Communications (protocol) [IBM]
  
• APPN = Advanced Peer-to-Peer Networking [IBM]
  
• APT = Advanced Photoscale Technology
  
• AQCB = Automated Quote Contract Billing
  
• ARA = AppleTalk Remote Access
  
• ARB = Architecture Review Board
  
• ARC = ATM Research Consortium
  
• ARCNET = Attached Resources Computing NETworks
  
• ARIN = American Registry for Internet Numbers
  
• ARIS = Aggregate Route-based IP-Switching
  
• ARL = Adjusted Ring Length
  
• " = Army Research Laboratory
  
• ARM = Asynchronous Response Mode
  
• ARMD = ATAPI Removable Media Device
  
• ARP = Address Resolution Protocol
  
• ARPA = Advanced Research Projects Agency
  
• ARPANET = Advanced Research Projects Agency NETwork
  
• ARQ = Automatic ReQuest to repeat
  
• AS = Autonomous System
  
• ASCII = American Standard Code for Information Interchange
  
• ASD = Automated Software Distribution
  
• ASE = Application Service Element
  
  
• ash = Almquist SHell
  
• ASI = Adapter Support Interface (IBM)
  
• ASIC = Application Specific Integrated Circuit
  
• ASIO = Audio Stream I/O
  
• ASID = Access, Searching, and Indexing of Directories
  
• ASIS = American Society for Industrial Security
  
• ASN.1 = Abstract Syntax Notation One
  
• ASO = Address Supporting Organization
  
• ASP = Apple Session Protocol
  
• " = Active Server Pages
  
• " = Applet Security Profile
  
• ASO = Address Supporting Organization
  
• ASP = AppleTalk Session Protocol
  
• ASPI = Advanced SCSI Programming Interface
  
• ASR = Access Service Request
  
• " = Automatic Speech Recognition
  
• AT = Advanced Technology
  
• " = ATtention (Modembefehle)
  
• ATA = AT-bus Attachment
  
• ATAPI = AT-bus Attachment Packet Interface
  
• ATCP = AppleTalk Control Protocol
  
• ATDM = Asynchronous Time Division Multiplexing
  
• ATIP = Absolute Time in Pregroove
  
• ATL = Active Template Library
  
• ATM = Automatic Teller Machine
  
• " = Asynchronous Transfer Mode
  
• ATMARP = ATM Address Resolution Protocol
  
• ATME = Automatic Transmission Measuring Equipment
  
• ATP = Apple Transaction Protocol
  
• ATR = Answer To Reset
  
• ATRAC = Adaptive Transform Accoustic Coding
  
• ATS = Abstract Test Suite
  
• ATT = ATTenuation
  
• A/UX = Apple UniX
  
• AUI = Attachment Universal Interface
  
• AUO = Active User Object
  
• " = Attachment Unit Interface
  
• AUSCERT = Austrialian Computer Emergency Response Team
  
• AUTODIN = AUTOmatic DIgital Network
  
• AUTOVON = AUTOmatic VOice Network
  
• ATW = Advanced Windowing Toolkit
  
• A/UX = Apple UniX
  
• AVI = Audio Video Interleave
  
• AWG = American Wire Gauge
  
• AVL = Andelson-Velskij/Landis
  
• AWM = Advanced Wave Memory
  
• AWK = Aho, Weinberger, and Kernighan
  
• AWT = Abstract Window Toolkit
  
• AXCS = Advanced X.25 Connection Services
  
• B8ZS = Binary 8 Zero Substitution (see also NRZ, NRZI, AMI)
  
• BAA = Blanket Authorization Agreemenr
  
• BAP/BACP = Bandwidth Allocation Protocol/Bandwidth Allocation Control Protocol (PPP suite)
  
• BALUN = BALanced-UNbalanced
  
• BAMM = Bidirectional Asymmetric Multipoint-to-Multipoint
  
• BAP = Bandwidth Allocation Protocol (PPP suite)
  
• BAPM = Bidirectional Asymmetric Point-to-Multipoint
  
• BAPP = Bidirectional Asymmetric Point-to-Point
  
• BAS = Basic Activity Subset
  
• bash = Bourne-Again SHell
  
• BASIC = Beginners All Symbolic Instruction Code
  
• BBS = Bulletin Board Service
  
• BCAST = BroadCAST Protocol (Novell protocols)
  
• BCC = Block Check Character
  
• " = Broadcast Call Control
  
• BCD = Binary Coded Decimal
  
• BCDIC = Binary Coded Decimal Interchange Code
  
• BCP = Byte Controlled Protocols
  
• " = Bridging Control Protocol (PPP suite)
  
• BCPL = Basic Combined Programming Language
  
• BCS = Basic Combined Subset
  
• BCVS = Basic Conversational Verb Set
  
• BDC = Backup Domain Controller
  
• BDS = Basic Data Service
  
• BE = Back End
  
• BEB = Binary Exponential Backoff
  
• BECN = Backward Explicit Congestion Notification
  
• BEDO = Burst EDO
  
• BER = Bit Error Rate
  
• " = Basic Encoding Rules
  
• BERT = Bit Error Rate Test
  
• BG = Border Gateway
  
• BGA = Ball Grid Array
  
• BGP = Border Gateway Protocol(TCP/IP)
  
• BHT = Branch History Table
  
• BI = Backbone Interface
  
• B-ICI = Broadband (BISDN) Inter-Carrier Interface (ATM PNNI Signaling)
  
  
• BiCMOS = Bipolar Complementary Metal-Oxide Semiconductor
  
• BIND = Berkeley Internet Name Domain
  
• BIP = Bit-Interleaved Parity
  
• BIOS = Basic Input/Output System
  
• B-ISDN = Broadband ISDN
  
• B-ISSI = Broadband Inter-Switching System Interface
  
• BIST = Built-In Self Test
  
• BISUP = Broadband ISDN User Part
  
• BISYNC = BInary SYNChronous communications protocol
  
• BIT = BInary digiT
  
• BLAM = Binary Logarithmic Arbitration Method
  
• BLAST = BLocked ASynchronous Transmission
  
• BLERT = BLock Error Rate Test
  
• B-LMI = Broadband Local Management Interface
  
• BLOB = Binary Large OBject
  
• BMP = Burst Mode Protocol (Novell protocols)
  
• " = BitMaP (Bildformat)
  
• " = Bean Managed Persistance
  
• BMS = Bandwidth Management Services
  
• BN = Boundary Node
  
• BNA = Burroughs Network Architecture
  
• BNC = Bayonet-Neill-Concelman connector
  
• BNF = Backus-Naur Form
  
• BNI = Broadband-to-Narrowband Interface
  
• BOa = Basic Object Adapter
  
• BOC = Bell Operating Company
  
• BODT = Bunch Of Dumb Terminals
  
• BOM = Beginning Of Message
  
• BONDING = Bandwidth ON Demand INteroperability Group
  
• BOOTP = BOOTstrap Protocol
  
• BOP = Byte Oriented Protocol
  
• BPAD = Bisynchronous Packet Assembler/Disassembler
  
• BPF = Berkeley Packet Filter
  
• BPDU = Bridge Protocol Data Unit
  
• BPI = Bits Per Inch
  
• BPS = Bits Per Second
  
• BRE = Bridge Relay Encapsulation, proprietary Ascom Timeplex protocol that extends bridging across WAN links by means of encapsulation (Frame Relay).
  
• BRI = Basic Rate Interface
  
• BSC = Binary Synchronous Communications
  
• " = Base Station Controller
  
• BSD = Berkeley Software Distribution
  
• BSI = British Standards Institute
  
• BSIG = Bluetooth Special Interest Group
  
• BSMM = Bidirectional Symmetric Multipoint-to Multipoint
  
• BSMTP = Batched Simple Mail Transfer Protocol
  
• BSPM = Bidirectional Symmetric Point-to Multipoint
  
  
• BSPP = Bidirectional Symmetric Point-to Point
  
• BSRAM = Burst Static RAM
  
• BSS = Broadband Switching System
  
• BT = British Telecom
  
• " = Broadband Terminal
  
• " = Burst Tolerance
  
• BTA = Basic Trading Area
  
• B-TE = Broadband Terminal Equipment
  
• BTAM = Basic Telecommunications Access Method
  
• BTS = Base transceiver station
  
• BVCP = PPP Banyan VINES Control Protocol (PPP suite)
  

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