Networking Acronyms

Extensive List of Computer Related Acronyms:

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 for Buro und InformationsTechnik
CEG - Continuous Edge Graphics
CEN - Comite Europeen de Normalisation
CENTR - Council of European National Top level domain Registries
CERN - Centre European de Recherche Nucleaire
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 fuer 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 STeuerERklaerung
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 Vertraeglichkeit
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 fuer kunstliche 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 - Kuenstliche 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 fuer 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 Muenchen
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 Televiseurs
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 fuer 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

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ActiveXperts Network Monitor 2023

ActiveXperts Network Monitor 2023

ActiveXperts Network Monitor 2023

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Networking Acronyms

Extensive List of Computer Related Acronyms: