acronyms... love em, hate em, live with them

• 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
• AMB - 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]
• ACE - Adverse Channel Enhancements [Microcom]
• ACE - Automatic Computing Engine
• ACE - Access Control Entry [Microsoft]
• ACF - Advanced Communication Function
• ACF - Access Control Field
• ACHEFT - Automated ClearingHouse Electronic Funds Transfer
• ACK - ACKnowledge
• ACK - ACKnowledgement flag, TCP header
• ACL - Access Control List
• ACL - Advanced Cmos Logic
• ACM - Association for Computing Machinery
• ACMS - Application Control Management System
• ACNA - Access Customer Name Abbreviation
• ACP - Argus Communications Protocol
• ACP - Ancillary Control Program
• ACP - Auxillary Control Process
• ACPI - Advanced Configuration and Power Interface [Microsoft]
• ACS - Asynchronous Communications Server
• ACS - Advanced Communications System
• ACSE - Association Control Service Element (ISO/CCITT layer 7)
• ACTEF - ACcess TEchnologies Forum
• ACTS - Advanced Communications Technology Satellite
• ACTS - Automatic Coin Telephone Service [Telephony]
• ACUTA - Association of College and University Telecomm
• ACU - Automatic Calling Unit
• ACW - Alternating Continuous Waves
• A/D - Analog to Digital conversion
• ADA - Automatic Data Acquisitions
• ADA - (Programming Language named after Agusta Ada Lovelace)
• ADC - Analog to Digital Converter
• ADC - Adaptive Data Compression (protocol)
• ADCCP - Advanced Data Communication Control Procedure
• ADCI - Automatic Display Call Indicator
• ADF - Adapter Description File (file name extension)
• ADF - 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
• ADPCM - Adaptive Data Pulse Code Modulation
• ADR - AdDRess
• ADS - Application Development Solutions [AT&T]
• ADS - Application Development System
• ADS - 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
• ADSR - Attack, Decay, Sustain, Release
• ADT - Application Data Types
• ADTS - Automated Digital Terminal System
• ADU - Analog-Digital-Umsetzer
• ADU - Automatic Dialing Unit
• AE - Application Entity
• AE - Account Executivpplication Engineer
• AE - 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
• AFP - 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
• AI - Access Interface
• AI - Analog Input
• AIA - Air Intelligence Agency
• AIA - 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
• AIS - 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
• ALC - Automatic Level Control
• ALE - Address Latch Enable
• ALGOL - Algorithmic Oriented Language
• ALGOL - 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
• AMD - Administration Management Domain
• AMD - Advanced Micro Devices, Inc.
• AMEL - Active Matrix Electro-Luminescence
• AMI - Alternate Mark Inversion (see also NRZ, NRZI, B8ZS)
• AMI - 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
• AOS - Array Of Structures
• AP - Application Process
• AP - Application Processor
• AP - Adjunct Processor
• AP - 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
• ARL - 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
• ASP - Active Server Pages
• ASP - Applet Security Profile
• ASO - Address Supporting Organization
• ASP - AppleTalk Session Protocol
• ASPI - Advanced SCSI Programming Interface
• ASR - Access Service Request
• ASR - Automatic Speech Recognition
• AT - Advanced Technology
• AT - 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
• ATM - 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
• AUO - 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
• BCC - Broadcast Call Control
• BCD - Binary Coded Decimal
• BCDIC - Binary Coded Decimal Interchange Code
• BCP - Byte Controlled Protocols
• BCP - 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
• BER - 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)
• BMP - BitMaP (Bildformat)
• BMP - 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
• BSC - 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
• BT - Broadband Terminal
• BT - 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)

• C - programming language (successor to B, which was based on BCPL)
• CA - Collision Avoidance (as in CSMA/CA (q.v.))
• CA - Certification Authority
• CABEB - Capture Aviodance Binary Exponential Backoff
• CAC - Connection Admission Control
• CAD - Computer Aided Design
• CALL - Computer Assisted Language Learning
• CAM - Computer Aided Manufacturing
• CAM - Content Addressable Memory
• CAMAC - Computer Aided Measurement And Controlling
• CAN - Content Addressable Memory
• CAP - Carrierless Amplitude/Phase modulation
• CAPI - Common Application Programming Interface
• CAPI - Crypto API [Microsoft]
• CAR - Contents of the Address part of the Register (LISP)
• CAS - Column Access Strobe (siehe auch RAS)
• CASE - Computer Aided Software Enginering
• CATV - Community Antenna TeleVision
• CAU - Controlled Access Unit
• CAUCE - Coalition Aganinst Unsolicited Commercial E-mail
• CAV - Constant Angular Velocity (Umdrehung bei Festplatten)
• CB - Communications Base
• CB - Cable Budget
• CBC - Cipher Block Chain
• CBNS - Corporate Backbone Network Switch
• CBR - Constant Bit Rate
• CBS - Committed Burst Size
• CBT - Computer-Based Training
• CBX - Computerized Branch Exchange
• CC - Cluster Controller
• CCD - Charge Coupled Device
• CCF - Configuration Control Element
• CCFL - Cold Cathode Fluorescent Lamp
• CCIA - Computer and Communications Industry Association
• CCIS - Common Channel Interoffice Signalling system
• CCITT - Comite Consultatif International Telegraphique st Telephonique
• CCL - Communications Command Language
• CCM - Common Configuration Method (Novell)
• CCP - Compression Control Protocol [Microsoft] (PPP suite)
• CCRL - Computer Crime Research Laboratories
• CCS - Common Communications Support
• CCTLD - country code Top Level Domain
• CCTV - Closed Circuit TeleVision
• CCU - Communications Control Unit
• CD - Carrier Detect
• CD - Compact Disc
• CD - Connection Director
• CD - Collision Detection (as in CSMA/CD (q.v.))
• CD-DA - CD Digital Audio
• CDDI - Copper Distributed Data Interface
• CDE - Cooperative DEvelopment Environment
• CDE - Common Desktop Environment
• CDFS - CD File System
• CDMA - Code Division Multiple Access
• CDP - CRL Distribution Point [Microsoft]
• CDPD - Cellular Digital Packet Data
• CD-R - CD Recordable
• CDRAM - Cache DRAM
• CDROM - Compact Disk Read Only Memory
• CD-RW - CD ReWritable
• CDS - Current Directory Structure
• CDSA - Common Data Security Architecture
• CD-WORM - CD Write Once Read Many
• CDV - Cell Delay Variation
• CDVT - Cell Delay Variation Time
• CE - Compact Edition
• CeBIT - Centrum f�r B�ro und InformationsTechnik
• CEG - Continuous Edge Graphics
• CEN - Comite Europeen de Normalisation
• CENTR - Council of European National Top level domain Registries
• CERN - Centre Europ�en de Recherche Nucl�aire
• CERT - Computer Emrgency Response Team
• CES - Consumer Electronics Show
• CFC - Cipher Feedback Chain
• CFM - ConFiguration Management
• CGA - Color Graphics Adapter
• CGI - Common Gateway Interface
• CGM - Computer Graphics Metafile
• CHAP - Challenge-Handshake Authentication Protocol (PPP suite)
• CHARGEN - CHARacter GENerator
• CHILL - CCITT HIgh-Level Language
• CHV - Card Holder Value
• CI - Control Interface
• CI - Cell Identity
• CIAC - Computer Incident Advisory Capability
• CIC - Carrier Identification Code (10XXX codes)[Telephony]
• CICS - Customer Interface Control System (IBM)
• CIDR - Classless Inter-Domain Routing
• CIF - Cells in Frames (ATM over LAN)
• CIFS - Common Internet File System
• CIM - Common Information Model
• CIMOM - CIM Object Manager
• CIP - Common Indexing Protocol
• CIR - Committed Information Rate
• CIRC - Cross-Interleave-Reed-Solomon-Code
• CIS - Contact Image Sensor
• CISC - Complex Instruction Set Computing
• CIX - Commercial Internet eXchange
• CL - Cache Latency
• CLA - Carry Lookahead Adder
• CLF - Common Log Format
• CLI - Command Line Interpreter
• CLI - Call Level Interface
• CLIP - Calling Line Identification Presentation
• CLIP - CLassical IP (over ATM)
• CLIR - Calling Line Identification Restriction
• CLK - Clock
• CLNP - Connectionless Network Protocol
• CLNS - ConnectionLess Network Service (Protocol)
• CLP - Cell Loss Priority
• CLR - Cell Loss Ratio
• CLR - CLeaR
• CLS - Cycle Line State
• CLSID - Class ID
• CLV - Constant Linear Velocity (Umdrehung bei CD-DA)
• CMA - Communications Managers Association
• CMC - Common Mail Calls
• CMD - Compatibility Mode Drivers
• CMIP - Common Management Information Protocol
• CMIS - Common Management Information Services
• CMISE - Common Management Information Service Element
• CMNS - Connection Mode Network Service
• CMOS - Complementary Metal Oxide Semiconductor
• CMOT - CMIS Over TCP/IP
• CMP - Congestion Monitoring Period
• CMP - Container Managed Persistance
• CMS - Code Morphing Software
• CMT - Connection ManageMent
• CMYK - Cyan Magenta Yellow blacK
• CNC - Computerized Numerical Control
• CNE - Certified NetWare Engineer
• CNI - Certified Netware Instructor
• CNM - Customer Network Management
• CNMS - Communications Network Management System
• CNR - Carrier-to-Noise Ratio
• CNRI - Corporation for National Research Initiatives
• CO - Central Office
• COAST - Computer Operations, Audit, and Security Technology
• COBM - Central Office-Based Multiplexing
• COBOL - Common Business Oriented Language
• COBRA - Common Object Request Broker Architecture
• CODEC - COder-DECoder
• CODEL - Communications Definition Language
• COM - Continuation Of Message
• COM - Component Object Model
• COM - Computer Output (on) Microfiche
• COM - Computer Output (on) Microfilm
• COMSAT - COMmunications SATellite corporation
• CONS - Connection-Oriented Network Services
• COPS - Common Open Policy Service
• CORBA - Common Object Request Broker Architecture
• COS - Corporation for Open Systems
• COS - Class Of Service
• COSE - Common Open Software Environment
• CP - Communications Processor
• CP - Common Part
• CPAN - Comprehensive Perl Archive Network
• CPCS - Common Part of Convergence Sublayer
• CPE - Customer Premises Equipment
• CPI - Common Programming Interface
• CPI - Common Part Indicator
• CPI-C - Common Programming Interface - Communications
• CPN - Customer Premises Node
• CPS - Characters Per Second
• CPU - Central Processing Unit
• CR - Carriage Return (ASCII 15 octal)
• CRC - Cyclic Redundancy Check
• CRL - Certificate Revocation List [Microsoft]
• CRM - Connection Request Mode
• CRMI - Committed Rate Measurement Interval
• CRS - Cell Relay Service
• CRS - Content Replication System
• CRT - Cathode Ray Tube
• CS - Convergence Sublayer
• CS - Circuit switched
• CSA - Canadian Standards Association
• CSF - Customer Support Facility
• CSID - Called Subscriber ID
• CSLIP - Compressed SLIP
• CSMA - Carrier Sense Multiple Access
• CSMA/CA - Carrier Sense Multiple Access with Collision Avoidance
• CSMA/CD - Carrier Sense Multiple Access with Collision Detection
• CSP - Cryptographic Service Provider
• CSS - Cascading Style-Sheets
• CSS1 - Cascading Style-Sheets level 1
• CSTC - Computer Security Technology Center
• CSU - Channel Service Unit
• CSV - Comma Separated Values
• CSV - Common Service Verbs
• CTCP - Client To Client Protocol
• CTERM - Command TERMinal (DECnet)
• CTI - Computer/Telephone Integration
• CTL - Certificate Trust List [Microsoft]
• CTS - Clear-To-Send
• CTS - Common Transport Semantics
• CU - Call UNIX
• CUA - Common User Access
• CUG - Closed User Group
• CUT - Control Unit Terminal
• D/A - Digital to Analog conversion
• DA - Directory Agent
• DAA - Direct Access Arrangement
• DAB - Digital Audio Broadcasting
• DAC - Digital Audio Copy
• DAC - Digital to Analog Converter
• DAC - Dual Attached Concentrator
• DACL - Discretionary Access Control List [Microsoft]
• DACS - Digital Access and Cross-connect System
• DAE - Distributed Automation Edition
• DAE - Digital Audio Extraction
• DAI - Distributed Artificial Intelligence
• DAML - Digital Added Main Line
• DAO - Data Access Object
• DAO - Disc At Once
• DAP - Directory Access Protocol
• DAP - Data Access Protocol (DECnet)
• DARPA - Defense Advanced Research Projects Agency
• DAS - Dual Attached Station
• DASD - Directly Accessible Storage Device
• DAT - Digital Audio Tape
• DATE - Dedicated Access to X.25 Transport Extension
• DAU - Digital-Analog-Umsetzer
• dB - Decibel
• DB2 - DataBase 2
• DBA - DataBase Administrator
• DBCS - Double-Byte Character Set
• DBMS - Data Base Management System
• DBS - Direct Broadcast Satellite
• DC - Direct Current (Gleichstrom)
• DCA - Document Control Architecture
• DCAP - Data Link Switching Client Access Protocol
• DCC - Data Communication Channel
• DCC - Direct Client Connection
• DCD - Data Carrier Detect
• DCE - Data Carrier Equipment
• DCE - Data Circuit-terminating Equipment
• DCE - Distributed Computing Environment
• DCE - Data Communications Equipment
• DCI - Display Control Interface
• DCOM - Distributed Component Object Model
• DCP - Data Compression Protocol over Frame Relay
• DCPCP - DCP Control Protocol
• DCR - Direct Connecting Receptacle
• DCS - Digital Cross-connect System
• DCS - Data Communication Services
• DCS - Digital Cellular System
• DCTL - Direct Coupled Transistor Logic
• DDCMP - Digital Data Communications Message Protocol
• DDA - Digital Differential Analyzer
• DDC - Display Data Channel
• DDE - Dynamic Data Exchange
• DDI - DEvice Driver Interface
• DDI - Direct Dialing In
• DDL - Description Definition Language
• DDM - Distributed Data Management
• DDN - Defense Data Network
• DDNS - Dynamic DNS
• DDO - Dynamic Data Object
• DDoS - Distributed Denial of Service attack
• DDP - Distributed Data Processing
• DDP - Datagram Delivery Protocol
• DDPT - Disk Drive Parameter Table
• DDR SDRAM - Double Data Rate SDRAM
• DDS - Dataphone Digital Service (ATT)
• DDX - Dialog Data eXchange
• DE - Discard Eligibility
• DEC - Digital Equipment Corporation
• DECT - Digital Enhanced Cordless Telecommunication
• DEL - Decode Encode Language
• DEMS - Digital Electronic Message Service
• deque - Double-Ended QUEue
• DES - Data Encryption Standard
• DET - Directory Entry Table
• DFA - DXI Frame Address
• DFP - Digital Flat Panel
• DFS - Distributed File System
• DFT - Diskrete Fourier Transformation
• DFT - Distributed Function Terminal
• DGA - Direct Graphics Access
• DGIS - Direct Graphics Interface Standard
• DHCP - Dynamic Host Configuration Protocol
• DHTML - Dynamic HTML
• DIA - Document Interchange Architecture
• DIA - Directory Information Base
• DIA - Device Independent Bitmap
• DIAG - DIAGnostic Responder protocol (Novell)
• DIB - Dual Independent Bus
• DID - Direct Inward Dial
• DIME - DIrect Memory Execute (AGP)
• DIME - Direct Internet Message Encapsulation
• DIMM - Dual In-line Memory Module
• DIN - Deutschen Institut f�r Normunsgwesen
• DIP - Dual-In-line Package
• DIPL - Drain Induced Barrier Lowering
• DIRx - Device Identification Register x (Cyrix CPUs)
• DISA - Data Interchange Standards Association
• DISA - Defense Information Systems Agency
• DISOSS - DIStributed Office Support System
• DIT - Directory Information Tree
• DIW - Defensive Information Warfare
• DIX - DEC/Intel/Xerox standard
• DLC - Data Link Control
• DLCI - Data Link Connection Identifier
• DLL - Dynamic Link Library
• DLL - Dynamic Load Libraries
• DLL - Data Link Layer
• DLPI - Data Link Provider Interface
• DLSW - Data Link SWitching (IBM SNA)
• DM - Disconnect Mode
• DMA - Direct Memory Access
• DMB - Digital Multipoint Bridge
• DME - Distributed Management Environment
• DMI - Digital Multiplexed Interface
• DMI - Desktop Management Interface
• DML - Data Manipulation Language
• DMT - Descrete MultiTone modulation
• DMT - Direct MultiTone
• DMTF - Desktop Management Task Force
• D-MTU - Default Maximum Transmission Unit
• DN - Distinguished Names
• DNA - Digital Network Architecture
• DNA - Downstream Neighbor Address
• DNCC - Domain Network Control Center
• DNCP - PPP DECnet Phase IV Control Protocol (PPP suite)
• DNIC - Data Network Identification Code
• DNIS - Dialed Number Identification Service
• DNR - Domain Name Resolver
• DNS - Domain Name Service
• DNS - Domain Name System
• DNSO - Domain Name Supporting Organization
• DOCSIS - Data Over Cable Service Interface Specification
• DOD - Department Of Defense
• DOD - Dial On Demand
• DODIIS - Department Of Defense Intelligence Information System
• DOE - Department of Energy
• DOM - Document Ovject Model
• DOMF - Distributed Object Management Facility
• DOR - Digital Optical Recording
• DOS - Denial of Service attack
• DOS - Disk Operating System
• DPG - Dedicated Packet Group
• DPI - Distributed Protocol Interface
• DPI - Dots Per Inch
• DPMI - DOS Protected Mode Interface
• DPMS - Display Power Management Signaling
• DPN - Deutsches Provider Netzwerk
• DPSK - Differential Phase Shift Keying
• DQDB - Distributed Queue Dual Bus
• DQDB - Dual Queue Dual Bus
• DRAM - Dynamic Random Access Memory
• DRL - Dynamically Reconfigurable Logic
• DRPA - Defense Research Projects Agency
• DRPA - Distributed Relational Database Architecture
• DRQ - DMA Request
• DRUMS - Detailed Revision/Update of Message Standards
• DRx - Debug Register x
• DS - Dansk Standardiseringsrad
• DS - Distribution System
• DSA - Directory System Agents
• DSA - Destination Sub-Area
• DSAP - Destination Service Access Point
• DSC - DiSConnect
• DSD - Direct Stream Digital
• DSE - Data Switching Equipment
• DSL - Digital Subscriber Line
• DSMON - Differentiated Services MONitoring
• DSN - Data Source Name
• DSO - Dynamic Shared Object
• DSOM - Distributed System Object Model
• DSMCC - Digital Storage Media Command and Control (Audio Visual over ATM)
• DSP - Display System Protocol
• DSP - Directory System Protocol
• DSP - Digital Signal Processor
• DSS - Department Store System
• DSS - Decision Support System
• DSS - Digital Signature Standard [Microsoft]
• DSS1 - Digital Subscriber System 1 (normiertes ISDN-Protokoll in Europa)
• DSSS - Direct Sequence Spread Spectrum
• DSTN - Double Super Twisted Nematic
• DSTN - Dual Scan Twisted Nematic
• DSU - Digital Service Unit
• DSVD - Digital Simultaneous Voice and Data
• DTAG - Deutsche Telekom AG
• DTCP - Digital Transmission Content Protocol
• DTD - Document Type Definition
• DTE - Data Terminal Equipment
• DTE - Domain and Type Enforcement
• DTIC - Defense Technical Information Center
• DTMF - Dual-Tone MultiFrequency
• DTP - Data Transfer Process
• DTP - DeskTop Publishing
• DTP - Distributed Transaction Processing
• DTR - Data-Terminal-Ready
• DTS - Distributed Time Service
• DUA - Directory User Agents
• DUA - Distance Vector Algorithms
• DUN - Dial-Up Networking
• DVB - Digital Video Broadcast
• DVD - Digital Versatile Disc
• DUA - Digital Video Disc
• DVD-R - DVD Recordable
• DVD-RW - DVD ReWritable
• DVI - DeVice Independent
• DVI - Digital Visual Interface
• DVMRP - Distance-Vector Multicast Routing Protocol
• DWDM - Dense Wavelength Division Multiplexing
• D-WiN - Deutsches WissenschaftsNetz
• DWMT - Discrete Wavelet MultiTone
• DXF - Data eXchange File
• DXF - Drawing eXchange Format

• EAB - Extended Attribute Byte
• EAI - External Authoring Interface
• EAP - Extensible Authentication Protocol [Microsoft]
• EAR - Enterprise Application Repository
• EAX - Environmental Audio eXtension
• EAX - Extended AX (und EBX, ECX ...)
• EBCDIC - Extended Binary Coded Decimal Interchange Code
• EBCOT - Embedded Block Coding with Optimized Truncation
• EBI - Extended BIOS Interface
• EBIM - Ethernet Bridge Interface Module
• EBONE - European IP backBONE
• EBS - Excess Burst Size
• EC - Error Checking
• ECB - Electronic Code Book
• ECC - Error Checking and Correction
• ECF - ECho Frame
• ECL - Emitter-Coupled Logic
• ECL - Execution Control List
• ECM - Error Correction Mode
• ECM - Entity Coordination Management
• ECMA - European Computer Manufacturers Association
• ECML - Electronic Commerce Markup Lamguage
• ECO - Electronic Commerce Forum (Verband der deutschen Internet-Wirtschaft)
• ECP - Encryption Control Protocol (PPP suite)
• ECSA - Exchange Carriers Standards Association
• ED - Ending Delimiter
• EDAC - Error Detecting and Correcting
• EDGE - Enhanced Data rates for GSM Evolutions
• EDI - Electronic Data Interchange
• EDICUSA - EDI Council of the U.S.A.
• EDIFACT - EDI For Administration, Commerce, and Transport
• EDMS - Electronic Document Management System
• EDO-RAM - Extended Data Out RAM
• EDP - Electronic Data Processing
• EDV - Elektronische DatenVerarbeitung
• EECL - Equivalent Electrical Cable Length
• EEHLLAPI - Entry Emulator High-Level Language Application Programming Interface
• EELL - Equivalent Electrical Lobe Length
• EEMRL - Equivalent Electrical Main Ring Length
• EEMS - Enhanced Expanded Memory Specification
• EEPROM - Electrically Erasable/Programmable ROM
• EFF - Electronic Frontier Foundation
• EFM - Eight to Fourteen Modulation (Aufzeichnungsverfahren bei Audio-CDs)
• EFS - Encrypting File System [Microsoft]
• EFT - Electronic Funds Transfer
• EGA - Enhanced Graphics Adapter
• EGP - Exterior Gateway Protocol
• EHLLAPI - Emulator High-Level Language Application Programming Interface
• EIA - Electronic Industries Association
• EIDE - Enhanced IDE
• EIF - European Internet Foundation
• EIP - Extended Internet Protocol
• EIR - Equipment Identification Center
• EIS - Employee Information System
• EIS - Executive Information System
• EISA - Extended Industry Standard Architecture
• EJB - Enterprise JavaBeans
• ELAN - Emulated Local Area Network
• ELD - Electro-Luminescence Display (aktives LCD)
• ELF - Executable and Linking Format
• ELF - Extensible Linking Format
• ELLC - Enhanced Logical Link Control
• ELSTER - ELektronische STeuerERkl�rung
• EMA - Enterprise Management Architecture
• EMACS - Editor MACroS
• EMC - Explicit Multiplexing Capability
• EMF - Electro-Magnetic Force
• EMF - Enhanced Metafile
• EMI - ElectroMagnetic Interference
• EMMS - Electronic Media Management System
• EMP - Excessive Multiple Posting
• EMS - Expanded Memory Services
• EMS - Enhanced Memory Services
• EMSD - Efficient Mail Submission and Delivery
• EMV - ElekroMagnetische Vertr�glichkeit
• EN - End Node
• ENA - Extended Network Addressing
• ENIAC - Electronic Numerical Integrator And Computer
• EOCB - Electrical-Optical Circuit Board
• EOF - End Of File
• EOI - End Of Interrupt
• EOL - End Of Line
• EOR - End Of Record
• EOT - End Of Transmission
• EPIC - Electronic Privacy Information Center
• EPIC - Explicit Parallel Instruction Computing
• EPP - Enhanced Parallel Port
• EPROM - Erasable Programmable Read-Only Memory
• EPS - Encapsulated PostScript
• ER - Explicit Route
• ERP - Emergency Repair Disk [Microsoft]
• ES - End Systems
• ESCD - Extended Setup Configuration Data
• ESCON - Enterprise Systems CONnection
• ESD - Electro-Static Discharge
• ESDI - Enhanced Small Device Interface
• ESDRAM - Enhanced SDRAM
• ESF - Extended Superframe Format
• ESF - Extended Servvice Frame
• ES-IS - End System to Intermediate System (ISO protocols)
• ESMTP - Extended SMTP
• ESP - Enterprise Server Platform
• ESP - Encapsulating Security Payload
• ESS - Electronic Switching System
• ESS - Extended Service Set
• ETP - Extended Thermal Plate
• ETR - Early Token Release
• ETSC - European Telecommunications Standardization Institute
• ETSI - European Telecommunications Standards Institute
• EW - Electronic Warfare

• FA - From ARPANET
• FAQ - Frequently Asked Questions
• FASL - Fujitsu-AMD Semiconductor Ltd.
• FAT - File Allocation Table (DOS)
• FATMA - Frequency And Time Multiple Access
• FC - Frame Control
• FCAPS - Faults, Configuration, Accounting, Performance, Security (Netzwerkmanagement-Gesichtspunkte)
• FCB - File Control Block [Microsoft]
• FCC - Federal Communications Commission
• FCFS - First Come First Served
• FC-PGA - Flip Chip Pin Grid Array
• FCRAM - Fast Cycle RAM
• FCS - Frame Check Sequence
• FCS - Frame Control Sequence
• FCS - Fiber Channel Standard
• FDD - Floppy Disk Drive
• FDDI - Fiber Distributed Data Interface
• FDL - Facility Data Link
• FDM - Frequency Division Multiplexing
• FDX - Full DupleX operation
• FDX - Forms Data eXchange
• FE - Front End
• FEBE - Far-End Bit Error
• FEC - Front-End Controller
• FEC - Forward Error Correction
• FECN - Forward Explicit Congestion Notification
• FED - Field Emission Displays (Konkurrenz zu LCD)
• FEP - Front End Processor
• FERF - Far-End Receive Failure
• FET - Field Effect Transistor
• FF - Form Feed
• FFOL - FDDI Follow-On Lan
• FFT - Fast Fourier Transformation
• FIF - Fractal Image Format
• FIFO - First-In First-Out
• FILO - First-In Last-Out
• FIPS - Federal Information Processing Standard
• FIR - Fast InfraRed
• FIRST - Forum of Incident Response and Security Teams
• FHSS - Frequency Hopping Spread Spectrum
• FLAG - Fiberoptic Link Around the Globe
• FLOPS - FLoating point Operations Per Second
• FM - Frequency Modulation
• FMD - Function Management Data
• FMT - Fine grain MultiThreading
• FO - Fragment Offset
• FOIRL - Fiber Optic Inter-Repeater Link
• FOMAU - Fiber Optic Medium Access Unit
• FOP - Frame Oriented Protocol
• FORTRAN - Formula Translator
• FOSSIL - Fido/Opus/Seadog Standard Interface Level
• FOTS - Fiber-Optic Terminal System
• FPGA - Field Programmable Gate Array
• FPM-RAM - Fast Page Mode RAM
• FPS - Fast Packet Switching
• FPU - Floating Point Unit
• FQDN - Fully Qualified Domain Name
• FRAM - Ferroelectric RAM
• FRBS - Frame Relay Bearer Service
• FRF - Frame Relay Fragmentation
• FRICC - Federal Research Internet Coordinating Committee
• FRMR - FRaMe Reject
• FRS - File Replication System
• FRS - File Record Segment
• FRU - Field Replaceable Unit
• FS - Frame Status
• FSAA - Full Screen AntiAliasing
• FSB - Front Side Bus
• FSF - Free Software Foundation
• FSK - Frequency Shift Keying
• FSMO - Flexible Single Master Operation
• FSP - File Server Processes
• FSS - Food Service System
• FTAM - File Transfer Access and Management
• FTAM - File Telecommunications Access Method
• FTP - File Transfer Protocol
• FUBAR - Fouled Up Beyond All Recognition
• FUNI - Framebased UNI (User Network Interface)
• FVF - Flexible Vertex Format
• FWH - FirmWare Hub
• FYI - For Your Information
• FX - Foreign eXchange service
• FXO - Foreign eXchange Office
• FXS - Foreign eXchange Subscriber
• FXS - Foreign eXchange Station

• GAL - Generic Array Logic
• GAN - Global Area Network
• GART - Graphics Address Remapping Table
• GAS - Gallium Arsenide
• Gb - Interface between a SGSN and a BSS
• GC - Global Catalog
• GC - Interface between a GGSN and a HLR
• GCC - Group Call Control
• GCCS - Global Comand and Control System
• GCRA - Generic Cell Rate Algorithm
• Gd - Interface between a SMS-GMSC and a SGSN, and between a SMS-IWMSC and a SGSN
• GDI - Graphical Device Inferface
• GDS - Graphic Data Syntax
• Gf - Interface between a SGSN and an EIR
• GFC - Generic Flow Control
• GFLOPS - Giga-FLoating point Operations Per Second
• GFSK - Gaussian Frequency Shift Keying
• GGP - Gateway-to-Gateway Protocol
• GGSN - Gateway GPRS Support Node
• Gi - Reference point between GPRS and an external packet data network
• GIF - Graphics Interchange Format
• GIS - Graphical Information System
• GIWU - GSM interWorking Unit
• GLAN - Global LAN
• GMM - GPRS Mobility Management
• GMSC - Gateway Mobile Services switching Center
• GMT - Greenwich Mean Time
• Gn - Interface between two GSNs within the same PLMN
• GNU - Gnu is Not Unix
• GOSIP - Government Open Systems Interconnection Profile
• GPF - General Protection Fault
• GPRS - General Packet Radio Service
• GPSC - General Purpose Synchronous Communications board
• Gr - Interface between a SGSN and a HLR
• GREP - Generalized REgular Expression Parser
• Gs - Interface between a SGSN and a MSC/VLR
• GSM - Global System for Mobile Communications
• GSM - GPRS Session Management
• GSMP - General Switch Management Protocol (IP Switching)
• GSN - GPRS Support Node (xGSN)
• GTP - GPRS Tunneling Protocol
• GUI - Graphical User Interface
• GUID - Global Unique IDentifier (128 Bit Code)
• GUUG - GateWay
• GW - German Unix User Group

• HAL - Hardware Abstraction Layer
• HCL - Hardware Compatibility List [Microsoft]
• HDD - Hard Disk Drive
• HDLC - High-level Data Link Control
• HDSL - High bit rate Digital Subscriber Line
• HDSL-RA - HDSL Rate Adaptive
• HDTP - Handheld Device Transport Protocol
• HDTV - High-Definition TV
• HDX - Half DupleX
• HEC - Header Error Control
• HEL - Hardware Emulation Layer
• HERF - High Energy Radio Frequency
• HFS - Hierarchial File System
• HIPPI - HIgh Performance Parallel Interface
• HL - Horizontal Length
• HLLAPI - High-Level Language Application Programming Interface
• HLR - Home Location Register
• HLS - Halt Line State
• HMA - High Memory Area
• HMAC - Hash-based Message Authentication Code
• HP - Hewlett-Packard
• HP-UX - Hewlett-Packard's UNIX implementation
• HPAD - Host PAD
• HPFS - High Performance File System (OS/2)
• HPGL - Hewlett-Packard Graphics Language
• HPPI - High-Performance Parallel Interface
• HPRAPPN - High Performance Routing Advanced Peer to Peer Network, IBM network architecture for dynamic routing across arbitrary network topologies
• HPUX - Hewlett-Packard UniX
• HRC - Hybrid Ring Control
• HSCSD - High-speed Circuit-Switched Data
• HSM - Hardware-Specific Module
• HSSI - High-Speed Serial Interface
• HSTR - High Speed Token Ring
• HTA - HTml Application
• HTML - Hyper Text Markup Language
• HTTP - Hyper Text Transport Protocol
• HTTPR - Reliable HTTP
• HZ - HertZ

• I - Information
• IAB - Internet Architecture Board
• IAB - Internet Activity Board
• IACR - International Association for Cryptologic Research
• IANA - Internet Assigned Number Authority
• IAS - Information Access Service
• IASIW - Institute for the Advanced Study of Information Warfare
• IBR - Intermediate Bit Rate
• IC - Interexchange Carrier
• IC - Integrated Circuit
• ICA - International Communications Association
• - Independent Computing Architecture
• ICC - International Color Consortium
• ICD - Installable Client Driver
• ICH - I/O Controller Hub
• ICI - Interface Control Information
• ICMP - Internet Control Message Protocol
• ICMPv6 - revision of ICMP (TCP/IP)
• ICP - Initial Connection Protocol
• ICS - Internet Connection Sharing
• ICSL - Internet Communication Search Language
• IDAPI - Integrated Database Application Programming Interface
• IDC - Insulation Displacement Connector
• IDE - Integrated Drive Electronics
• IDEA - International Data Encryption Algorithm
• IDF - Intermediate Distribution Frame
• IDF - Intel Developer's Forum
• IDI - International Development Institute
• IDL - Interface Definition Language
• IDN - Integrated Data Network
• IDP - Internet Datagram Protocol (XNS)
• IDRP - InterDomain Routing Protocol
• IE - Information Element
• IEEE - Institute of Electrical and Electronics Engineers
• IEN - Internet Experimental Note
• IESG - Internet Engineering Steering Group
• IETF - Internet Engineering Task Force
• IF - InterFace
• IFMP - Ipsilon Flow Management Protocol (IP Switching)
• IFS - Installable File System
• IGMP - Internet Group Management Protocol
• IGP - Interior Gateway Protocol
• IGRP - Interior Gateway Routing Protocol
• IHL - Internet Header Length
• IIOP - Internet Inter-ORB Protocol
• IIS - Internet Information Server
• IISP - Interim Interswitch Signalling Protocol (ATM Signalling)
• ILD - Integrated LAN Driver
• ILD - Injection Laser Diode
• ILMI - Interim Local Management Interface
• ILS - Idle Line State
• IMAC - Isochronous Medium Access Controller
• IMAP - Internet Message Access Protocol
• IMAP2 - Interim Mail Access Protocol, version 2
• IMC - Isochronous Maintenance Channel
• IMC - Internet mail Consortium
• IME - Input Method Editor [Microsoft]
• IMP - Interface Message Processor
• InATMARP - ATM Address Resolution Protocol
• INF - Interactive Network Facility
• INMS - Integrated Network Management System
• INN - Intermediate Network Node
• INN - InterNet News
• InterNIC - Internet Network Information Center
• INXS - InterNet eXchange System
• IO - Input/Output
• IOCTL - IO-ConTroL
• IP - Internet Protocol
• IPC - Integrated Protocol Converter
• IPC - InterProcess Communication
• IPCP - Internet Protocol Control Protocol
• IPES - Improved Proposed Encryption Standard
• IPHC - IP Header Compression
• IPI - Intelligent Peripheral Interface
• IPL - Information Processing Language (Programmiersprache f�r k�nstliche Intelligenz)
• IPSec - IP Security
• IPSO - Internet Protocol Security Options
• IPX - Internet Packet Exchange
• IPXCP - Internet Packet eXchange Control Protocol
• IPV6 - revised version of IP (TCP/IP)
• IPV6CP - IPv6 PPP Control Protocol, responsible for configuring, enabling and disabling the IPv6 protocol modules on both ends of a PPP link
• IRC - Internet Relay Chat
• IrDA - InfraRed Data Association
• IrLAP - InfraRed Link Access Protocol
• IrLMP - InfraRed Link Management Protocol
• IrOBEX - InfraRed OBject EXchange protocol
• IRQ - Interrupt ReQuest
• IRTF - Internet Research Task Force
• IS - Intermediate System
• ISA - Industry Standard Architecture
• ISAPI - Internet Server API
• ISCA - Intelligent Synchronous Communication Adapter
• ISDN - Integrated Services Digital Network
• ISI - Information Sciences Insitute
• IS-IS - Intermediate System to Intermediate System protocol
• ISLAN - Integrated Services Local Area Network
• ISN - Information Systems Network
• ISO - International Organization for Standardization
• ISOC - Internet Society
• ISOIP - ISO Internetworking Protocol, includes builtin error signalling to aid in routing management
• ISOSP - ISO Session Protocol, specifies procedures for a single protocol for the transfer of data and control information from one session entity to a peer session entity
• ISOTP - ISO Transport Protocol
• ISP - International Standardized Profile
• ISP - Internet Service Provider
• ISRC - International Standard Recording Code
• ISSA - Information Systems Security Association
• ISUP - ISDN User Part
• ISV - Independent Software Vendor
• IT - Information Technology
• ITU - International Telecommunications Union
• IVD - Integrated Voice Data
• IWF - InterWorking Function
• IWU - Interworking Unit
• IXA - Internet eXchange Architecture
• IXC - IntereXchange Carrier

• JAF - JavaBeans Activation Framework
• JARS - Java Applet Rating Service
• JAXP - Java API for XML Parsing optional package
• JBIG - Joint Bi-level Image expert Group
• JCL - Job Control Language
• JDBC - Java DataBase Connectivity
• JDK - Java Development Kit
• JED - Journal of Electronic Defense
• JEIDA - Japan Electronics Industry Department Association
• JFIF - JPEG File Intercharge Format
• JFS - Journaling File System
• JFT - Job File Table
• JINI - Java Intelligent Network Infrastructure
• JISC - Japanese Industrial Standards Committee
• JIT - Just-In-Time
• JMS - Java Messaging Service
• JNDI - Java Naming and Directory service Interface
• JNI - Java Native Interface
• JNT - Java Network Technology
• JPEG - Joint Photographic Experts Group
• JS - JavaScript
• JSAPI - Java Speech API
• JSDK - Java Servlet Development Kit
• JSP - Java Server Pages
• JTA - Java Transaction API
• JTM - Job Transfer and Manipulation
• JTS - Java Transaction Service
• JVM - Java Virtual Machine

• KB - KiloByte
• KBPS - KiloBits Per Second
• KCC - Knowledge Consistency Checker
• KDC - Kerberos key Distribution Center
• KDE - K Desktop Environment
• KEA - Key Exchange Algorithm
• KI - K�nstliche Intelligenz
• KNI - Katmai New Instructions
• KSH - Korn SHell
• KSR - Keyboard Send/Receive

• L2F - Layer 2 Forwarding
• L2TP - Layer 2 Tunneling Protocol
• LAB - Link Access Procedure (not balanced)
• LAB - Latency Adjustment Buffer
• LAI - Location Area Identity
• LAN - Local Area Network
• LANA - Local-Area Network Adapter
• LANE - LAN Emulation
• LAP - Link Access Procedure
• LAPB - Link Access Procedure (Balanced)
• LAPD - Link Access Procedure, D channel
• LAPF - Link Access Procedure F (Frame Relay), modified LAPD standard for Frame Relay
• LAPM - Link Access Procedure for Modems
• LAPX - Link Access Procedure eXtended
• LASER - Light Amplification by Stimulated Emission of Radiation
• LAT - Local Area Terminal
• LAT - Local Area Transport
• LATA - Local Access and Transport Area
• LAVC - Local Area VAX Cluster protocol, communications between DEC VAX computers in a cluster (DECnet)
• LBA - Logical Block Addressing
• LCD - Liquid Crystal Display
• LCD - Loss of Cell Delineation
• LCG - Linear Congruent Generator
• LCN - Logical Channel Number
• LCOS - Liquid Crystal On Silicon
• LCP - Link Control Protocol (PPP suite)
• LCR - Least Cost Router
• LCT - Link Confidence Test
• LDA - Local Delivery Agent
• LDAP - Lightweight Directory Access Protocol
• LDD - Lightly Doped Drain
• LDIF - LDAP Data Interchange Format
• LDM - Local Domain Manager
• LDP - Linux Documentation Project
• LDP - Label Distribution Protocol
• LDSL - Low bit rate Digital Subscriber Line
• LEC - Local Exchange Carrier
• LEC - LAN Emulation Client
• LECS - LAN Emulation Configuration Server
• LED - Light Emitting Diode
• LEM - Link Error Monitor
• LEN - Low-Entry Networking
• LER - Label Edge Router
• LES - LAN Emulation Server
• LF - Line Feed
• LFN - Long FileName
• LFN - Long Fat Network
• LFS - Large File Support
• LFSR - Linear Feedback Shift Register
• LFV - Logical File Viewer
• LGPL - Library GPL
• LGX - Light Guide Cross Connect
• LIDE - LED Indirect Exposure
• LIFO - Last In First Out
• LILO - Last In Last Out
• LILO - LInux LOader
• LIM - Lotus/Intel/Microsoft
• Linux - LInus' UniX
• LIS - Logical IP Subnetwork
• LISP - LISt Processing language
• LISP - LISt Processor
• LL - Lobe Length
• LLC - Link Layer Control
• LLC - Logical Link Control
• LLNL - Lawrence Livermore National Laboratory
• LLP - Lower-Level Protocol
• LLTSR - Logs and Tallies Terminate and Stay Resident program
• LME - Layer Management Entity
• LMI - Layer Management Interface
• LMI - Local Management Interface
• LMMP - Lan Man Management Protocol
• LMP - Link Management Protocol
• LMU - Lan Manager for Unix
• LNNI - LAN emulation Network to Network Interface
• LOD - Level Of Detail
• LOF - Loss Of Frame
• LON - Local Operation Network
• LOP - Loss Of Pointer
• LOS - Loss Of Signal
• LPC - Local Procedure Call
• LPCM - Linear Pulse Code Modulation
• LPD - Line Printer Daemon protocol - Berkeley
• LPDGWY - Line Printer Daemon Gateway
• LPI - Lines Per Inch
• LPM - Line Processing Module
• LPR - Line Printer Remote
• LPS - Labeled Switch Path
• LPT - Line Printer
• LPNC - Logical Private Network Capability
• LRC - Logical Redundancy Check
• LQR - Link Quality Report, specifies the mechanism for link quality monitoring with PPP
• LRU - Least Recently Used
• LSA - Link State Algorithms
• LSB - Least Significant Byte
• LSB - Least Significant Bit
• LSB - Linux Standard Base
• LSF - Load Sharing Facility
• LSI - Large Scale Integration
• LSL - Link Support Layer
• LSM - Linux Software Map
• LSU - Line State Unknown
• LT - Line Termination
• LTPS - Low Temperature Poly Silicium
• LU - Logical Unit
• LUN - Logical Unit Number
• LUNI - LAN emulation User to Network Interface
• LVDS - Low Voltage Differential Signaling
• LVDS - Low Voltage Differential Swing
• LVM - Logical Volume Manager
• LVTTL - Low Voltage Transistor Transistor Logic

• MAC - Media Access Control
• MAC - Message Authentication Code
• MADCAP - Multicast Address Dynamic Client Allocation Protocol
• MAJC - Micro Architecture for Java Computing (gesprochen magic)
• MAN - Metropolitan-Area Network
• MAP - Manufacturing Automation Protocol
• MAP - Management Access Protocol
• MAPI - Message Application Programming Interface (Microsoft)
• MAPOS - Multiple Access Protocol over SONET / SDH
• MARS - Multicast Address Resolution Server (TCP/IP)
• MAU - Medium Attachment Unit (Ethernet)
• MAU - Multistation Access Unit (Token Ring)
• MB - MegaByte
• MBCS - MultiByte Character Set
• MBONE - Multicast backBONE
• MBPS - Million Bits Per Second
• MBR - Master Boot Record
• MBR - Mail-Based Replication
• MBS - Maximum Burst Size
• MC - Micro Channel
• MC - Motion Compensation
• MCA - Micro Channel Architecture
• MCF - Meta Content Format
• MCGA - Memory Controller Gate Array
• MCH - Memory Controller Hub
• MCI - Media Control Interface
• MCIA - Micro Channel Interface Adapter (NCR)
• MCM - Multi-Carrier Module
• MCM - Multi-Chip Module
• MCR - Minimal Cell Rate
• MCS - MultiCast Server
• MCU - MicroController Unit
• MD5 - Message Digest 5
• MDA - Monochrome Display Adapter
• MDF - Main Distribution Frame
• MDG - Minimum Delay Generator
• MDI - Multiple Document Interface
• MDI - Medium Dependent Interface
• MDSL - Medium bit rate Digital Subscriber Line
• MEDEA - Micro-Electronics Development for European Applications
• MEGACO - MEdia GAteway COntrol
• MEMS - Micro-Electrical-Mechanical Systems
• MESI - Modified-Exclusive-Shared-Invalid (Cache-Protokoll f�r Multiprozessorumgebung)
• METAL - Machine and Translation of Natural Language
• MF - MultiFunction
• MFLOPS - Millions of FLOating Point Operations per Second (MegaFlops)
• MFM - Modified Frequency Modulation
• MHS - Message Handling Service
• MHS - Message Handling System (Novell)
• MFT - Master File Table
• MFTP - Multicast File Transfer Protocol
• MGCP - Media Gateway Control Protocol
• MHS - Message Handling System
• MHTML - Mime encapsulation of aggreagte HTML document
• MHz - MegaHertZ
• MIB - Management Information Base
• MIC - Management Interface Connector
• MIC - Media Interface Connector
• MIC - Message Integrity Check
• MID - Message IDentification
• MIDI - Musical Instrument Digital Interface
• MIF - Management Information Format
• MIFD - Management Information Format Database
• MII - Media Independent Interface
• MILNET - MILitary NETwork
• MIMD - Multiple-Instruction Multiple-Data
• MIME - Multipurpose Internet Mail Extension
• MIMIX - MIniature UniX
• MIPS - Million Instructions Per Second
• MIS - Management Information System
• MISD - Multiple-Instruction Single Data
• MIT - Massachusetts Institute of Technology
• MJ - Modular Jack
• M-JPEG - Motion JPEG
• MLAN - Mobile LAN
• MLD - Multicast Listener Discovery
• MLID - Multiple Link Interface Driver
• MLP - Multilink Procedure, added upper sublayer of the LAPB, operating between the packet layer and a multiplicity of single data link protocol functions (SLPs) in the data link layer (X.25).
• MLS - Master Line State
• MM - Mobility management
• MMC - MultiMedia Card
• MMDF - Multi-channel Memo Distributing Facility
• MMJ - Modified Modular Jack
• MML - Man-Machine Language
• MMPM - MultiMedia Presentation Manager
• MMS - Manufacturing Message Standards
• MMS - Microsoft Metadirectory Services
• MMU - Memory Management Unit
• MMVF - MultiMedia Video Format
• MMX - MultiMedia eXtension
• MNP - Microcom Network Protocol
• MNP4 - Microcom Network Protocol Four
• MNP5 - Microcom Network Protocol Five
• MO - Managed Object
• MODCA - Mixed Object Document Content Architecture
• MODEM - MOdulator / DEModulator
• MOF - Managed Object Format
• MOM - Manager Of Managers
• MOM - Message-Oriented Middleware
• MOP - Maintenance Operation Protocol, utility services such as uploading and downloading system software, remote testing and problem diagnosis (DECnet)
• MOPS - Millions of Operations Per Second
• MOS - Metal-Oxide Semiconductor
• MOSPF - Multicast Open Shortest Path First
• MOSS - MIME Object Security Services
• MOTIS - Message Oriented Text Interchange System
• MP - MultiProcessor
• MP3 - MPEG audio layer 3
• MPC - Multimedia PC
• MPCA - Multi-Protocol Communications Adapter (NCR)
• MPDU - Message Protocol Data Unit
• MPEG - Moving Pictures Experts Group
• MPL - Mozilla Public License
• MPLS - Multi-Protocol Label Switching
• MPOA - Multi-Protocol Over ATM
• MPP - Massively Parallel Processor
• MPPC - Microsoft PointtoPoint Compression Protocol
• MPSL - Multi Protocol Label Switching
• MPTS - Multi Protocol Transport Services
• MPTN - Multi Protocol Transport Network
• MPU - MicroProcessor Unit
• MQI - Message Queuing Interface
• MRAM - Magnetic RAM
• MRCI - Microsoft Real-Time Compression Interface
• MRH - Memory Repeater Hub
• MRI - Magnetic Resonance Imaging
• MRJ - Macintosh Runtime for Java
• MRL - Main Ring Length
• MRM - Multi-Resolution-Mesh
• MR-SDSL - MultiRate SDSL
• MRSID - Multi Resolution Seamless Image Database
• MRU - Maximum Receive Unit
• MRX - MagnetoResistive eXtended
• MS - Message Store
• MS - Mobile station
• MSAU - Multi-Station Access Unit
• MSB - Most Significant Bit
• MSB - Most Significant Byte
• MSC - Mobile services Switching Center
• MS-DOS - Microsoft Disk Operating System
• MSDP - Multicast Source Discovery Protocol
• MSDSL - Multirate SDSL
• MSDTS - Microsoft Distributed Transaction Controller [Microsoft]
• MSE - Microsoft Scripting Engine
• MSFS - Mail Slot File System
• MSI - Medium Scale Integration
• MSL - Maximum Segment Lifetime
• MSM - Media Support Module
• MSN - Monitoring cell Sequence NUmber
• MSN - Multiple Subscriber Numbers
• MSP - Management Service Provider
• MSS - Maximum Segment Size
• MTA - Mail Transfer Agent
• MTA - Message Transfer Agent
• MTBF - Mean Time Between Failures
• MTC - MIDI Time Code
• MTF - Message Transfer Facility
• MTH - Memory Translator Hub
• MTJ-RAM - Magnetic Tunnel Junction RAM
• MTP - Mail Transfer Part
• MTP - Message Transfer Part
• MTP2 - Message Transfer Part, Level 2, signalling link which together with MTP3 provides reliable transfer of signalling messages between two directly connected signalling points (SS7)
• MTP3 - Message Transfer Part, Level 3, connects Q.SAAL to the users (SS7 suite)
• MTRR - Memory Type Range Register
• MTS - Message Transfer System
• MTS - Microsoft Transaction Server
• MTTR - Mean Time To Repair
• MTU - Maximum Transmission Unit
• MULTICS - MULTiplexed Information and Computing System
• MUP - Multiple UNC Provider
• MUX - MUltipleXer
• MVS - Multiple Virtual Storage

• NAC - Null Attachment Concentrator
• NACS - Network Asynchronous Communications Services
• NAIC - National Air Intelligence Center
• NAK - Negative AcKnowledgement
• NANP - North American Numbering Plan
• NAP - Network Access Points
• NAS - Network Attached Storage
• NAS - Network access server
• NASA - National Aeronautics and Space Administration
• NAT - Network Address Translation
• NAU - Network-Addressable Unit
• NAVCERT - Naval Computer Incident Response Team
• NBFCP - NetBios Frames Control Protocol
• NBMA - NonBroadcast, MultiAccess
• NBP - AppleTalk Name Binding Protocol, manages the use of names on AppleTalk networks
• NBS - National Bureau of Standards
• NC - Network Computer
• NC - Norton Commander
• N/C - No Connect
• NCC - Network Control Center
• NCM - Network Control and Management
• NCP - NetWare Core Protocol
• NCP - Network Control Program
• NCS - National Communications Systems
• NCS - Network Computing System
• NCSA - National Computer Security Association
• NCSC - National Computer Security Center
• NCTA - National Cable Television Association
• NDIS - Network Driver Interface Specification (IBM/Microsoft)
• NDL - Network Database Language
• NDM - Netlabs Dual Manager
• NDPS - Novell Distributed Print Services
• NDS - NetWare Directory Services
• NDS - Novell Directory Services
• NE - Network Element
• NE - Name Error
• NEC - National Electric Code
• NEMA - National Electric Manufacturers Association
• NetBEUI - NetBIOS Extended User Interface
• NetBIOS - NETwork Basic Input/Output System
• NETPRC - NetRemote Procedure Call, used to access VINES applications such as StreetTalk and VINES Mail (Banyan).
• NEXT - Near End crossTalk
• NFR - Near Field Recording
• NFS - Network File System (Sun)
• NHBU - Networking Hardware Business Unit
• NHC - Next Hop Client
• NHDR - Network layer HeaDeR, begins the frame used by RTP nodes
• NHRP - Next Hop Resolution Protocol
• NHS - Next Hop Server
• NI - Network Interface
• NIAS - Novell Internet Access Server
• NIC - Network Interface Card
• NIC - Network Information Center
• NIDL - Network Interface Definition Language
• NIF - Neighbor Information Frame
• NIP - Non-Impact Printer
• NIST - National Institute for Standards and Technology
• NIT - Network Interface Tap
• NIU - Network Interface Unit
• NIUF - North-american ISDN User Forum
• NLM - Netware Loadable Module
• NLS - Noise Line State
• NLS - Native Language Support
• NLSP - Netware Link Services Protocol
• NMAS - Network Management Alert System
• NMAS - Novell Modular Authentication Service
• NMC - Network Management Center
• NMI - Non-Maskable Interrupt
• NMIB - Network Management Information Base
• NMMP - Network Management Manager Process
• NMOS - Negatively doped Metal-Oxide Semiconductor
• NMP - Network Management Protocol
• NMPE - Network Management Protocol Entry
• NMS - Network Management System
• NMUP - Network Management User Process
• NMVT - Network Management Vector Transport
• NN - Network Node
• NN - Next Node
• NNI - Nederlands Normalisatie-Instituut
• NNI - Network-Node Interface
• NNI - Network to Network Interface
• NNS - Netware Name Service (Novell)
• NNTP - Network News Transfer Protocol
• NOP - No OPeration
• NOS - Network Operating System
• NPA - Numbering Plan Area
• NPAD - Non PAD
• NPD - Network Products Division (NCR)
• NPFS - Named Pipes File System
• NPSI - NCP Packet Switching Interface
• NREM - National Research and Engineering Network
• NRM - Normal Response Mode
• NSA - Next Station Addressing
• NSA - National Security Agency
• NSAI - National Standards Authority Of Ireland
• NSAP - Network Service Access Point
• NSAPI - Netscape Server API
• NSC - National Semiconductor Corporation
• NSF - National Science Foundation
• NSFNET - National Science Foundation NETwork
• NSP - Network Services Protocol, provides reliable virtual connection services with flow control to the network layer Routing Protocol (DECnet)
• NSP - Name Service Protocol
• NSS - Netware Storage Services
• NSS - Network and Switching Subsystem
• NT - New Technology
• NT - Network Termination
• NT1 - Network Termination 1
• NT2 - Network Termination 2
• NTFS - NT File System (NT)
• NTP - Network Time Protocol, time synchronization system for computer clocks through the Internet network (TCP/IP)
• NTRI - NCP Token-Ring Interface
• NTS - Network Time Protocol
• NTS - New Typesetting System
• NTSC - National Television Systems Committee
• NUA - Network User Address
• NUI - Network User Identification
• NUMA - Non-Unified Memory Architecture
• NURBS - Non Uniform Rational B-Splines
• NVFS - Network Virtual File System
• NVP - Network Voice Protocol
• NVP - Nominal Velocity of Propagation
• NVRAM - Non Volatile RAM
• NVT - Netware Virtual Terminal
• NVT - Network Virtual Terminal
• NWOC - New Way Of Computing

• OAM - Operations, Administration and Maintenance
• OAM - Operations, Administration and Management
• OCC - Open, Cooperative Computing
• OCCA - Open, Cooperative Computing Architecture
• OCD - Out-of-Cell Delineation
• OCR - Optical Character Recognition
• OCU - Office Channel Unit
• ODA - Office Document Architecture
• ODBC - Open Data Base Connectivity (Microsoft)
• ODBMS - Object Database Management System
• ODETTE - Organization for Data Exchange by Tele Transmission in Europe
• ODI - Open Data-Link Interface
• ODI - Open Driver Interface (Novell)
• ODIF - Office Document Interchange Format
• ODL - Object Definition Language
• ODSI - Open Directory Services Interface
• OEM - Original Equipment Manufacturer
• OLAP - OnLine Analytical Processing
• OLE - Object Linking and Embedding
• OMF - Open Modeling Forum
• OMF - Object Management Facility
• OMG - Open Management Group
• OML - Object Manipulayion Language
• ONC - Open Network Computing
• ONE - Open Network Environment
• ONR - Office of Naval Research
• ONU - Optical Network Unit
• OOF - Out Of Frame
• OOP - Object Orientated Programming
• OOT - Object-Oriented Technology
• OOUI - Object Oriented User Interface
• OPTIS - Overlapped PAM Transmission with Interlocking Spectra
• OPX - Off-Premises eXtension
• OQL - Object Query Language
• ORB - Object Request Broker
• OS - Operating System
• OSE - Office Server Extensions
• OSF - Open Software Foundation
• OSF - Open Systems Foundation
• OSI - Open Systems Interconnection
• OSI - Open Source Initiative
• OSINLCP - OSI Network Layer Control Protocol, responsible for configuring, enabling and disabling the OSI protocol modules on both ends of the PPP link
• OSIRM - Open Systems Interconnection Reference Model
• OSPF - Open Shortest Path First, linkstate routing protocol used for routing IP (TCP/IP)
• OSS - Operations Support System
• OTLF - One-Time License Fee
• OU - Organizational Unit

• PABX - Private Automatic Branch Exchange
• PAD - Packet Assembly/Disassembler
• PAL - Phase Alternating Line
• PAL - Programmable Array Logic
• PAM - Pulse Amplitude Modulation
• PAP - Printer Access Protocol
• PAP - Password Authentication Protocol
• PAWS - Protection Against Wrapped Sequence numbers
• PBX - Private Branch Exchange
• PC - Personal Computer
• PCB - Printed Circuit Board
• PCI - Peripheral Component Interface
• PCI - Protocol Control Information
• PCL - Printer Control Language
• PCM - Pulse Code Modulation
• PCM - Physical Connection Management
• PCMCIA - People Can't Memorize Computer Industry Acronyms
• PCMCIA - Personal Computer Memory Card International Association
• PCR - Peak Cell Rate
• PCS - Personal Communications Services
• PCSA - Personal Computing System Architecture
• PCSN - Private Circuit Switching Networks
• PCTA - Personal Computer Terminal Adapter
• PCU - Packet Control Unit
• PDA - Personal Digital Assistant
• PDC - Primary Domain Controller
• PDE - Page Directory Entry
• PDF - Portable Document Format
• PDL - Page Description Language
• PDN - Packet data network
• PDN - Public Data Network
• PDS - Premises Distribution System
• PDS - Persistent Data Services
• PDP - Packet Data Protocol
• PDU - Protocol Data Unit
• PDV - Path Delay Values
• PEM - Privacy Enhanced Mail
• PEP - Packet Exchange Protocol, provides a semireliable packet delivery service that orients towards singlepacket exchanges (XNS)
• PERL - Practical Extraction and Report Language
• PERM - Parallele Elektronische Rechenmaschine M�nchen
• PES - Proposed Encryption Standard
• PET - Personal Electronic Transactor
• PET - Privacy Enhancement Technology
• PFF - Page Fault Frequency
• PGA - Pin Grid Array
• PGA - Professional Graphics Adapter (IBM-Standard mit max. 640x480)
• PGP - Pretty Good Privacy
• PHY - PHYsical layer medium independent
• PICS - Protocol Implementation Conformance Statement
• PID - Process IDentifier[Microsoft]
• PIF - Program Information File
• PIM - Personal Information Manager
• PIM - Protocol Independent Multicast
• PIM-DM - Protocol Independent Multicast/Dense Mode
• PIM-SM - Protocol Independent Multicast/Sparse Mode
• PIN - Personal Identification Number
• PING - Packet INternet Groper
• PIO - Programmed I/O
• PIU - Path Information Unit
• pixel - picture cell
• pixel - picture element
• PIXIT - Protocol Implementation eXtra Information for Testing
• PJL - Printer Job Language
• PKCS - Public Key Cryptography Standards
• PKI - Public Key Infrastructure
• PKZIP - Phil Katz ZIP
• PL1 - Programming Language 1
• PLA - Programmable Logic Array
• PLC - PowerLine Communication
• PLCC - Plastic Leaded Chip Carrier
• PLCP - Physical Layer Convergence Protocol
• PLD - Programmable Logic Device
• PLIP - Parallel Line IP
• PLL - Phase Locked Loop
• PLL - Programming Language for Linguistics
• PLMN - Public Land Mobile Network
• PLP - Packet Layer Protocol
• PM - Presenation Manager
• PMA - Physical Medium Attachment
• PMAP - Port Mapper protocol, manages the allocation of transport layer ports to network server applications (Sun)
• PMD - Physical Media Dependent (Token Ring)
• PMD - Product Marketing Division
• PMF - Parameter Management Frame
• PMOS - Positively doped Metal-Oxide Semiconductor
• PMP - Point to MultiPoint
• PNG - Portable Network Graphics
• PNNI - Private NetworktoNetwork Interface, hierarchial, dynamic linkstate routing protocol (ATM)
• PnP - Plug'n'Play
• PO - Persistent Object
• POF - Plastic Optical Fiber
• POI - Path Overhead Identifier
• POM - Persistent Object Manager
• POP - POint Of Presence
• POP - Post Office Protocol
• POP3 - Post Office Protocol version 3
• POS - Point Of Sale
• POS - Programmable Option Select
• POSIX - Portable Operating System Interface for computer environments
• POST - Power-on Self Test
• POTS - Plain Old Telephone Service
• POTS - Point of Termination Station
• PP - ISO Presentation Protocol, performs context negotiation and management between open systems
• PPC - Power PC
• PPD - Postscript Printer Definition
• PPGA - Plastic Pin Grid Array
• PPP - Point to Point Protocol
• PPPBPDU - PPP Bridge Protocol Data Unit, used to connect remote bridges
• PPPMultilink - Multilink PointtoPoint Protocol, permits a system to indicate to its peer that it is capable of combining multiple physical links into a "bundle"
• PPPoE - PPP Over Ethernet
• PPS - Packets Per Second
• PPTP - Point to Point Tunneling Protocol, allows PPP to be channeled through an IP network (PPP)
• PRECOMP - write PRECOMPensation
• PRI - Primary Rate Interface (ISDN)
• PROFS - PRofessional OFfice System
• PROLOG - PROgramming in LOGic
• PROM - Programmable Read-Only Memory
• PS - Post Script
• PS/2 - Personal System/2
• PSDN - Packet-Switched Data Network
• PSPDN - Packet Switched Public Data Network
• PSK - Phase Shift Keying
• PSN - Private Switching Networks
• PSTN - Public Switched Telephone Network
• PTE - Page Table Entry
• PTI - Payload Type Indicator
• PTT - Postal, Telephone, and Telegraph Agency
• PTT - Prenegotiated Target Time
• PU - Physical Unit
• PUK - Personal Unblocking Key
• PUP - PARC Universal Packet protocol
• PVC - Permanent Virtual Circuit
• PVC - Permanent Virtual Connection
• PVC - PolyVinyl Chloride
• PVT - Permanent Virtual Terminal
• PWM - Pulse Width Modulation

• QAM - Quadrature Amplitude Modulation
• QBE - Query By Example
• QFP - Quad-FlatPack
• QIC - Quarter Inch Cartridge
• QLLC - Qualified Logical Link Control
• QLS - Quiet Line State
• QOS - Quality Of Service
• QPSX - Queued Packet Switch eXchange
• QSM - Queued Serial Module

• RAD - Rapid Application Development
• RADIUS - Remote Authentication Dial-In User Service
• RAF - Resource Allocation Frame
• RAID - Redundant Array of Inexpensive Disks
• RAM - Random Access Memory
• RAPID - Reusable Application Specific Intellectul Property Developers
• RARP - Reverse ARP
• RAS - Remote Access Service
• RBOC - Regional Bell Operating Company
• RCP - Remote Communications Processor
• RCP - Remote Copy Program
• RDA - Remote Database Access protocol
• RDBMS - Relational Data Base Management System
• RDF - Request Denied Frame
• RDF - Resource Description Format
• RDF - Resource Description Framework
• RDI - REmote DEfect Indicator
• RDO - Remote Data Object
• RDP - Reliable Datagram protocol
• RDP - Remote Desktop Protocol
• RDS - Remote Data Service
• REJ - REJect
• RES - Robots Exclusion Standard (robots.txt)
• REXX - REstructured eXtended eXecutor
• RF - Radio Frequency
• RFB - Remote Frame Buffer
• RFC - Request For Comment
• RFI - Radio Frequency Interference
• RFI - Request For Information
• RFP - Request For Proposal
• RFS - Remote File Service
• RFS - Remote File System
• RGB - Red Green Blue
• RI - Ring In
• RIAA - Recording Industry Association of America
• RIF - Routing Information Field
• RIP - Routing Information Protocol
• RIP - Routing Interface Protocol
• RISC - Reduced Instruction Set Computing
• RJE - Remote Job Entry
• RL - Reconfigurable Logic
• RLE - Run Length Encoding
• RLL - Run Length Limited
• RLOGIN - Remote Login
• RLP - Radio Link Protocol
• RMA - Return Merchandise Authorization
• RMA - Revolution in Military Affairs
• RMF - Remote Management Facility
• RMF - Rich Music Format
• RMI - Remote Method Invocation
• RMI-IIOP - Remote Method Invocation Internet Inter-ORB Protocol
• RMM - Read Mostly Memory
• RMON - Remote MONitoring
• RMS - Root Mean Squared
• RMW - Read Modify Write
• RNG - Random Number Generator
• RMN - Remote Multiplexer Node
• RMON - Remote Monitoring
• RMT - Ring ManageMent
• RNR - Receive Not Ready
• ROM - Read Only Memory
• RPC - Remote Procedure Call
• ROLC - Routing Over Large Clouds
• ROM - Read Only Memory
• ROS - Remote Operations Service
• ROSE - Remote Operations Service Element
• RP - Routing Protocol, distributes routing information among DECnet hosts
• RPC - Remote Procedure Call
• RPM - Rotations Per Minute
• RPOA - Recognized Private Operating Agencies
• RPSL - Routing Policy Specification Language
• RR - Receive Ready
• RR - Resource Record
• RRAS - Routing and Remote Access Service
• RSA - Rives/Shamir/Adleman
• RSAC - Recreational Software Advisory Council
• RSDL - Reverse Spiral Dual Layer
• RSE - Remote Streams Environment
• RSL - Registry Size Limit[Microsoft]
• RST - ReSeT
• RSVP - resource ReSerVation Protocol
• RTC - Real Time Clock
• RTD - Round Trip Delay
• RTF - Rich Text Format
• RTFM - Read The Flaming Manual
• RTM - Response Time Monitor
• RTMP - Routing Table Maintenance Protocol, manages routing information for AppleTalk networks
• RTO - Retransmission Time Out
• RTP - Routing Update Protocol, used to distribute network topology (Banyan).
• RTS - Request To Send
• RTSE - Reliable Transfer Service Element
• RTT - Round Trip Time
• RUDP - Reliable UDP
• rt-VBR - Real Time Variable Bit Rate
• RVD - Remote Virtual Disk Protocol
• RVP - Remote Voice Protocol
• RW - Read/Write
• RWIN - Receive WINdow

• S/MIME - Secure Multipurpose Internet Mail Extensions
• SA - Security Association
• SA - Service Agent
• SAA - Systems Application Architecture
• SAA - System Application Architecture (IBM)
• SAA - Standards Association of Australia
• SAAL - Signaling ATM Adaption Layer
• SABM - Set Asynchronous Balanced Mode
• SAC - Single Attached Concentrator
• SACD - Super Audio CD
• SACK - Selective Acknowledgement
• SACL - System Access Control List [Microsoft]
• SAG - SQL Access Group
• SALI - Subnetwork Adjacent Layer Interface
• SAM - Scalable ADSL Modem
• SAM - Security Accounts Manager
• SAM - Sequential Access Memory
• SAN - Storage Area Network
• SANE - Scanner Access Now Easy
• SAP - Service Advertising Protocol
• SAP - Service Access Point
• SAR - Segmentation And Reassembly sublayer
• SARM - Set Asynchronous Response Mode
• SAS - Single Attached Station (FDDI)
• SASE - Specific Application Service Elements
• SASI - Shugart Associates Standard Interface (Seagate)
• SASO - Saudi Arabian Standards Organization
• SBA - Synchronous Bandwidth Allocation
• SBA - Side Band Addressing
• SCAM - SCSI Configured AutoMagically
• SCART - Syndicat des Constructeurs d'Appareils Radio receteurs et T�l�viseurs
• SCCP - Signalling Connection Control Part
• SCEP - Simple Certificate Enrollment Protocol
• SCHWAFEL - Self Constructing Hyper Wavelet Algorithms For Extrapolating Linguistics
• SCI - Scalable Coherent Interface
• SCM - Service Control Manager
• SCO - Santa Cruz Operations
• SCP - Session Control Protocol, manages logical links for DECnet connections
• SCR - Sustainable Cell Rate
• SCS - SNA Character String
• SCSI - Small Computer System Interface
• SCTP - Stream Control Transmission Protocol
• SD - Starting Delimiter
• SDCP - PPP Serial Data Control Protocol, responsible for configuring, enabling and disabling the SDTP modules on both ends of the pointtopoint link
• SDDS - Sony Dynamic Digital Sound
• SDF - Sub Distribution Frame
• SDF - Shortest Delay First
• SDH - Synchronous Digital Hierarchy
• SDI - Serial Digital Interface
• SDI - Single Document Interface
• SDIF - Standard Document Interchange Format
• SDK - Software Development Kit
• SDL - System Description Language
• SDLC - Service Data Link Control
• SDLC - Synchronous Data Link Control
• SDM - Sub-rate Data Multiplexer
• SDMI - Secure Digital Music Initiative
• SDP - Session Description Protocol
• SDRAM - Synchronous DRAM
• SDSL - Single line Digital Subscriber Line
• SDSL - Single pair Digital Subscriber Line
• SDSL - Symmetrical bit rate Digital Subscriber Line
• SDSL - Symmetrical single pair Digital Subscriber Line
• SDT - Structured Data Transfer
• SDU - Satellite Delay Units
• SDU - Service Data Unit
• SEAL - Simple and Efficient Adaptation Layer
• SEAL - Software-optimized Encryption ALgorithm
• SECC - Single Edge Contact Cartridge
• SED - Stream EDitor
• SEF - Source-Explicit Forwarding
• SEI - Software Engineering Institute
• SEPP - Single Edge Processor Package
• SEK - Swedish Electrical Commission
• SER - Serialization packet, ensures that a single version of NetWare is not being loaded on multiple servers
• SES - Smart Energy System
• SET - Secure Electronic Transaction
• SF - Superframe Format
• SFD - Start Frame Delimiter
• SFS - Suomem Standardisoimisliitto
• SFP - System File Protection
• SFT - System Fault Tolerance
• SFT - System File Table
• SFTP - Simple File Transfer Protocol
• SGI - Silicon Graphics Inc.
• SGML - Standard Generalized Markup Language
• SGMP - Simple Gateway Monitoring Port
• SGRAM - Static Graphics RAM
• SGRAM - Synchronous Graphic RAM
• SGSN - Serving GPRS Support Node
• SHA - Secure Hash Algorithm
• SHARP - Self-Healing Alternate Route Protection
• SHAZAM - Semi-Heuristic Algorithm by Zemel And Miller
• SHTML - SSI HTML (Kennzeichnung f�r HTML-Dateien mit SSI)
• S-HTTP - Secure HTTP
• SIA - Systems Interconnect Architecture
• SIB - Security Information Base
• SID - Security ID
• SID - Society for Information Displays
• SIF - Status Information Frame
• SIF - Source Input Format
• SIG - Special Interest Group
• SIGINT - SIGnal INTelligence
• SIIA - Software and Information Industry Association
• SIM - Synchronous Interface Module
• SIM - Subscriber Identity Module
• SIMD - Single-Instruction Multiple-Data
• SIMD-FP - Single Instruction, Multiple Data-Floating Point
• SIMM - Single In-line Memory Module
• SINIX - SIemens unIX
• SIP - Serial Interface Protocol
• SIP - Single In-line Package
• SIP - SMDS Interface Protocol, threelevel protocol that controls access to the network
• SIPP - Single In-Line Pin Package
• SIR - Serial InfraRed
• SIR - Standard InfraRed
• SIS - Standardiseringskommissionen I Sverige
• SISD - Single-Instruction Single-Data
• SLA - Service-Level Agreement
• SLC - Simple Line Code
• SLD - Second Level Domain
• SLDRAM - SyncLink DRAM
• SLFP - Serial Line Framing Protocol
• SLI - Scan Line Interleaving
• SLIP - Serial Line Internet Protocol
• SLM - Service Level Management
• SLP - Service Locator Protocol
• SMART - Self Monitoring, Analysis and Reporting Technology
• SMB - Service Message Block
• SMB - System Management Bus
• SMD - Surface Mount Device
• SMDS - Switched Multi-megabit Data Service
• SMI - Structure of Management Information
• S/MIME - Secure MIME
• SMM - System Management Mode
• SMNP - Simple Network Management Protocol
• SMP - Symmetric Multi-Processor
• SMP - Simple Management Protocol
• SMS - Selective Multicast Server
• SMS - Short Message Service
• SMS - System Management Server
• SMSC - Short Message Service Center
• SMT - Simultanous MultiThreading
• SMT - Station ManagemenT
• SMT - Surface Mount Technology
• SMTP - Simple Mail Transfer Protocol
• SNA - System Network Architecture
• SNACP - SubNetwork ACcess Protocol
• SNAPDS - SNA Distribution Services
• SNAP - SubNetwork Access Protocol
• SNI - SNA Network Interconnect
• SNI - Subscriber Network Interface
• SNICP - Subnetwork Independent Convergence Protocol
• SNMP - Simple Network Management Protocol
• SNP - Sub-Network Protocol
• SNPA - Sub-Network Point of Attachment
• SNR - Signal to Noise Ratio
• SOA - Start Of Authentication
• SOA - Start Of Authority
• SOA - Structure Of Arrays
• SOA - Semiconductor Optical Amplifier
• SOAP - Simple Object Access Protocol
• SOAP-DSIG - SOAP Security Extensions: Digital Signature
• SODIMM - Small Outline DIMM
• SOHO - Small Office/Home Office
• SOI - Silicon-On-Isolator
• SOIC - Small Outline Integrated Circuit
• SOL - Small OutLine
• SOL - System on a Chip
• SOM - System Object Model
• SOM - Start Of Message
• SONET - Synchronous Optical Network
• SP - Service Pack
• SPAG - Standards Promotion and Applications Group
• SPANS - Simple Protocol for ATM Network Signalling, developed by FORE Systems for use in ATM networks
• SPARC - Scalable Performance ARChitecture
• SPC - Stored Program Control
• SPD-EEPROM - Serial Presence Detect EEPROM
• S/P-DIF - Sony/Philips Digital InterFace
• SPE - Synchronous Payload Envelope
• SPI - Syncronization Programming Interface
• SPID - Service Profile IDentifier
• SPKAC - Signed Public Key And Challenge
• SPM - SONET Physical layer Mapping
• SPMD - Single Program Multiple Data
• SPP - Sequenced Packet Protocol, provides reliable transport delivery with flow control (XNS)
• SPOOL - Simultaneous Peripheral Operation On Line
• SPT - Sectors Per Track
• SPX - Sequenced Packet Exchange
• SQE - Signal Quality Error
• SQL - Structured Query Language
• SRAM - Static RAM
• SRB - Source Routing Bridging, proprietary header of Bay Networks which passes Token Ring information over WAN lines
• SRDC - SubRate Data Cross-connect
• SRDM - SubRate Data Multiplexer
• SRF - Status Report Frame
• SRI - Stanford Research Institute
• SRMU - SubRate Multiplexer Unit
• SRPI - Server-Requester Programming Interface
• SRTS - Synchronous Residual Time Stamp
• SRV - SeRVice resource
• SS7 - Signaling System Number 7
• SSAP - Source Service Access Point
• SSCF - Service-Specific Coordination Function
• SSCOP - Service-Specific Connection-Oriented Protocol
• SSCP - System Service Control Point
• SSI - Server Side Includes
• SSL - Secure Sockets Layer
• SSNC - StarGROUP Server for Netware Clients
• SSP - Servvice-Specific Part
• SST - Spread-Spectrum Technology
• SST - Silicon Storage Technology
• SSTL_2 - Stab Series Terminated Logic for 2,5 V
• S/STP - Screened Shielded Twisted Pair
• S/UTP - Screened Unshielded Twisted Pair
• STA - Spanning Tree Algorithm
• STD - STandarD
• STDM - Synchronous Time Division Multiplexing
• STE - Signaling Terminal Equipment
• STM - Synchronous Transport Module
• STN - SuperTwist Nematic
• STP - Shielded Twisted Pair
• STP - Signal Transfer Point
• STP - Spanning Tree Protocol, prevents the formation of logical looping in the network (DECnet)
• STS - Synchronous Transport Signal level
• STU - Streaming Tape Unit
• STUN - Serial TUNnel
• SUS - Single Unix Specification
• SVC - Switched Virtual Circuit
• SVD - Simultaneous Voice over Data
• SVG - Scalable Vector Graphics
• SVGA - Super Video Graphics Array
• SVID - System V Interface Definition
• SVR4 - System V Release 4
• SWA - SOAP Messages with Attachments
• SWAP - Shared Wireless Access Protocol
• SWDS - SoftWare Distribution System
• SWS - Silly Window Syndrome
• SYNC - SYNChronous
• SYSV - SYStem V (= roman 5)

• TA - Terminal Adapter
• TAC - Terminal Access Controller
• TALI - Transfer Adjacent Layer Interface
• TAN - TransAction Number
• TAO - Track At Once
• TAP - Telocator Alphanumeric Protocol
• TAPI - Telephony API
• TASI - Time Assignment Speech Interpolation
• TBR - Technical Basis for REgulations
• TCA - Tele-Communications Association
• TCAP - Transaction Capabilities Application Part
• TCE - Targeted Client Environment
• TCL - Tool Command Language
• TCM - Trellis Code Modulation
• TCNS - Thomas Conrad Network System
• TCP - Transmission Control Protocol
• TCP/IP - Transmission Control Protocol/Internet Protocol
• TDCC - Transportation Data Coordinating Committee
• TDF - Tab Delimited Files
• TDM - Time Division Multiplex
• TDMA - Time Division Multiple Access
• TDP - Tag Distribution Protocol, a two party protocol that runs over a connection oriented transport layer with guaranteed sequential delivery
• TDR - Time Domain Reflectometer
• TDS - TeX Directory Structure
• TE - ISDN Terminal Equipment
• TEI - Terminal Endpoint Identifier
• TEI - Text Encoding Initiative
• TELNET - TELecommunications NETwork
• TFT - Thin Film Transistor
• TFTP - Trivial File Transfer Protocol
• TGA - TarGA
• TGS - Ticker-Granting Service
• TGT - Ticker-Granting Ticket
• THT - Token Holding Frame
• TIA - Telecommunications Industry Association
• TIC - Token-ring Interface Coupler
• TIFF - Tagged Image File Format
• TIGA - Texas Instruments Graphics Architecture
• TI-RCP - Transport-Independent Remote Procedure Call
• TK - Tool Kit
• TL - Total Length
• TLB - Translation-Lookaside Buffer
• TLD - Top Level Domain
• TLI - Transport Layer Interface
• TLP - Thread Level Parallelism
• TLV - Tag/Length/Value
• TSL - Transport Layer Security
• TM - Terminal Multiplexer
• TMAX - Maximum TTRT
• TMDS - Transition Minimized Differential Signaling
• TMN - Telecommunications Management Network
• TMSI - Temporary Mobule Subscriber Identity
• TN - Twisted Nematic
• TNA - Taskbar Notification Area
• TOP - Technical and Office Protocol
• TOS - Type Of Service
• TP - Transaction Program
• TPAD - Terminal PAD
• TPDU - Transport Protocol Data Unit
• TPI - Tracks Per Inch
• TPON - Telephony Passive Optical Networks
• TPS - Transactions Per Second (Bus)
• TPS - Triangles Per Second
• TPU - Time Processing Unit
• TREQ - Requested TTRT
• TRFS - Transparent Remote File System
• TRN - Token-Ring Network
• TRT - Token Rotation Time
• TRx - Test Register x
• TS - Time slot
• TSC - Time Stamp Counter
• TSI - Time Slice Intervals
• TSMC - Taiwan Semiconductor Manufactoring Company
• TSO - Time Sharing Option
• TSR - Terminate and Stay Resident
• TTCN - Tree and Tabular Combined Notation
• TTF - TrueType Font
• TTL - Time To Live
• TTL - Transistor-Transistor Logic
• TTML - Tagged Text Markup Language
• TTRT - Target Token Rotation Time
• TTS - Transaction Tracking System
• TTY - TeleTYpe
• TUBA - TCP and UDP with Bigger Addresses
• TUC - Total User Cell
• TUG - TeX Users Group
• Tux - Torvald's UniX
• TWA - Two Way Alternate
• TWAIN - Technology Without An Interesting Name (Scannerschnittstelle)
• TwinVQ - Transform-domain Weighted Interleave Vector Quantization (Soundkompression)
• TWIP - TWentIeth of a Point
• TWS - Two Way Simultaneous

• UA - User Agent
• UA - Unnumbered Acknowledgement
• UA - Unbalance Asynchronous
• UART - Universal Asynchronous Receiver Transmitter
• UAWG - Universal ADSL Working Group
• UBR - Unspecified Bit Rate
• UCI - User Class Identifier
• UCITA - Uniform Computer Information Transaction Act
• UCP - Universal Computer Protocol
• UCS - Universal Component System
• UDC - Universal Digital Channel
• UDDI - Universal Description, Discovery and Integration
• UDF - Universal Disk Format
• UDMA - Ultra-DMA
• UDP - User Datagram Protocol
• UDT - Unstructurede Data Transfer
• UE - User Elements
• UIP - Update In Progress
• UL - Underwriters Laboratories
• ULP - Upper Level Protocol
• UM - Interface between the MS and the GPRS fixed network part
• UMA - Unified Memory Architecture
• UMA - Universal Mainboard Architecture
• UMB - Upper Memory Block
• UME - UNI Management Entity
• UML - Unified Modeling Language
• UML-RT - UML RealTime
• UMM - Unidirectional Multipoint-to-Multipoint
• UMS - Unified Messaging Services
• UMTS - Universal Mobile Telecommunications Systems
• UN - Unbalanced Normal
• UNA - Upstream Neighbor Address
• UNC - Universal Naming Convention
• UNI - User Network Interface
• UNIX - From UNICS, a pun on its predecessor MULTICS
• UNMA - Unified Network Management Architecture
• UP - User Plane
• UPC - Usage Parameter Control
• UPC - Universal Product Code
• UPM - Unidirectional Point-to Multipoint
• UPnP - Universal Plug and Play
• UPP - Unidirectional Point-to-Point
• UPS - Uninterruptible Power System
• URI - Universal Resource Identifier
• URL - Uniform Resource Locator
• URM - Universal Retention Module
• URN - Uniform Resource Name
• URT - Utah Raster Toolkit
• USART - Universal Synchronous/Asynchronous Receiver Transmitter
• USB - Universal Serial Bus
• USDC - US Display Consortium
• USENET - USEr NETwork
• USL - Unix System Labs
• USM - User-based Security Model
• USML - UDDI Search Markup Language
• USTA - United States Telephone Association
• UTC - Universal Coordinated Time
• UTP - Unshielded Twisted Pair
• UUCP - UNIX to UNIX Copy Program
• UUNET - Unix to Unix NETwork
• UUX - Unix to Unix eXecute

• Vac - Volts of Alternating Current
• VACM - View-based Access Control Model
• VAN - Value Added Network
• VAP - Value Added Process
• VAR - Value Added Reseller
• VAR - Volt Amp Reactive
• VARP - VINES Address Resolution Protocol, used for finding the node Data Link Control address from the node IP address (Banyan)
• VAS - Value-added services
• VAT - Virtual Allocation Table
• VAX - Virtual Address eXtension
• VB - Visual Basic
• VBA - Visual Basic for Applications
• VBE - VESA BIOS Extension
• VBR - Variable Bit Rate
• VBS - Visual Basic Script
• VC - Virtual Circuit
• VC - Virtual Channel
• VC - Virtual Call
• VC-SDRAM - Virtual Channel SDRAM
• VCC - Virtual Channel Connection
• VCI - Virtual Channel Identifier
• VCL - Virtual Channel Link
• VCM - Virtual Channel Memory
• VCPI - Virtual Control Programming Interface
• VCR - Video Cassette Recorder
• Vdc - Volts of Direst Current
• VDM - Vienna Development Method
• VDT - Visual Display Terminal
• VDSL - Very high bit rate Digital Subscriber Line
• VDU - Visual Display Unit
• VESA - Video Electronics Standards Association
• VF - Voice Frequency
• VFAT - Virtual File Allocation Table
• VGA - Video Graphics Array
• VGCS - Voice Group Call Service
• VHDL - Virtual Hardware Description Language
• VIBE - Virtual Bass Enhancement technology
• VIM - Vendor Independent Messaging
• VINCE - Vendor Independent Network Control Entity
• VINES - VIrtual NEtworking Software
• VL - VESA Local Bus
• VLAN - Virtual LAN
• VLB - VESA Local Bus
• VLIW - Very Long Instruction Word
• VLIW - VVery Long Instruction Words
• VLM - Very Large Memory
• VLR - Visitor location register
• VLSI - Very Large Scale Integration
• VLSIC - Very Large Scale Integrated Circuit
• VM - Virtual Machine
• VM - Virtual Memory
• VME - VersaModule Eurocard
• VML - Vector Markup Language
• VMM - Virtual Memory Manager
• VMS - Virtual Memory System
• VMS - Voice Mail Server
• VMSC - Voice Mail Service Center
• VMTP - Versatile Message Transaction Protocol
• VNC - Virtual Network Computer
• VPS - Video Programming System
• VOB - Video OBject
• VOFDM - Vector Orthogonal Frequency Division Multiplexing
• VOIP - Voice-Over-IP
• VP - Virtual Path
• VPC - Virtual Path Connection
• VPE - Virtual Private Network
• VPI - Virtual Path Identifier
• VPL - Virtual Path Link
• VPN - Virtual Private Network
• VR - Virtual Reality
• VR - Voltage Regulated
• VRAM - Video RAM
• VRE - Voltage Regulated Extended (CPU)
• VRML - Virtual Reality Modeling Language
• VRRP - Virtual Router Redundancy Protocol
• VRT - Voltage Reduction Technology (CPU)
• VSAT - Very Small Aperture Terminal
• VSB - Vestigial Side Band
• VSB - VME Subsystem Bus
• VSE - Virtual Storage Extended
• VSIA - Virtual Socket Interface Alliance
• VT - Virtual Terminal
• VTAM - Virtual Telecom Access Method (IBM)
• VTAM - Virtual Terminal Access Method
• VTC - Volume Texture Compression
• VTS - Virtual Terminal Support
• VUI - Video User Interface

• W3C - World Wide Web Consortium
• WAE - Wireless Application Environment
• WAIS - Wide Area Information Server
• WAN - Wide-Area Network
• WAP - Wireless Access Protocol
• WAPI - Windows Application Binary Interface
• WATS - Wide Area Telephone Service
• WBC - WideBand Channel
• WCAT - Web Capacity Analaysis Tool
• WDM - Wavelength Division Multiplexing
• WDOG - WatchDOG protocol (Novell)
• WFW - Windows For Workgroups
• WIMPS - Windows, Icons, Menus, Pointers, Scroll bars
• WIN-TCP - Wollongong Integrated Networking/TCP
• WMI - Windows Management Instrumentation
• WML - Wireless Markup Language
• WOFTBO - Watch Out For The Burn Out
• WORM - Write Once Read Many
• WOS - Workstation Operating System
• WOSA - Window Open Services Architecture (Microsoft)
• WS-Inspection - Web Services Inspection Language
• WS-License - Web Services License Language
• WS-Referral - Web Services Referral Protocol
• WS-Routing - Web Services Routing Protocol
• WS-Security - Web Services Security Language
• WSCL - Web Services Conversation Language
• WSCM - Web Services Component Model
• WSDL - Web Services Description Language
• WSEL - Web Services Endpoint Language
• WSFL - Web Services Flow Language
• WSML - Web Services Meta Language
• WSP - Wireless Session Protocol
• WSXL - Web Services Experience Language
• WTLS - Wireless Transport Layer Security
• WTP - Wireless Transaction Protocol
• WSUI - Web Services for Business Process Design
• WWW - World Wide Web
• WYSIWYG - What You See Is What You Get

• XBM - X BitMap
• XDMCP - X Display Manager Control protocol
• XENIX - XENos unIX
• XML - eXtensible Markup Language
• XNS - Xerox Network Services
• XOM - X/Open Management
• XOT - Cisco Systems' X.25 over TCP
• XPM - X Pixel Map
• XTI - X/Open Transport layer Interface

• YAHU - Yet Another Header Utility

• ZIP - Zone Information Protocol

from:   http://www.activexperts.com/activmonitor/windowsmanagement/misc/acronyms/