A

A for app

abbreviation / acronyms term definition
A

connet Ampere

connet Anchor

connet Current measurement unit

connet HTML tag, a link to another location

A/N/K alphabetic, numeric, katakana Pertaining to alphabetic, numeric, or katakana characters.
a11y accessibility There are eleven letters between the "a" and the "y".
A2A application-to-application An approach to enterprise application integration that provides visibility into internal systems, so that these systems can share information or business processes.
AA anti-aliasing the technique of minimizing the distortion artifacts known as aliasing when representing a high-resolution signal at a lower resolution
AA automated attendant A device, typically attached to a private branch exchange or voice mail system, that answers incoming calls.
AAA authentication, authorization, and accounting

Also pronounced "triple a." Refers to a framework for intelligently controlling access to computer resources, enforcing policies, auditing usage, and providing the information necessary to bill for services.

connet Authentication is the process of identifying an individual, usually based on a username and password.

connet Authorization is the process of granting or denying a user access to network resources once the user has been authenticated through the username and password.

connet Accounting is the process of keeping track of a user's activity while accessing the network resources

AAB All-to-all broadcast the process where every node broadcasts its information to all other nodes.
AAC

connet Advanced Audio Coding

connet ATM access concentrator

connet an audio compression format newer and more efficient than MP3, used internally by iTunes and Nintendo Wii

connet A device used to concentrate a variety of services (such as frame relay, Internet Protocol and video) over a single ATM network access connection.

AAL ATM adaptation layer The ATM layer where non-ATM data is converted to ATM format. The AAL serves as the "glue" that connects traditional packet and frame structures with short, fixed-length ATM cells.
AARP AppleTalk Address Resolution Protocol Provides for the dynamic assignment of node identifiers to nodes within an AppleTalk network.
AAS Auto Area Segmentation Scanner technology which detects and optimizes text and graphics on the same page by Epson.
AAT Average Access Time The average amount of time it takes for a storage peripheral to transfer data to the CPU.
AAUI Apple Attachment Unit Interface A 14-position, 0.050-inch-spaced ribbon contact connector.
ABAP Advanced Business Application Programming Powerful programming language created specifically for developing SAP applications. The core development tool in SAP's R/3 system.
ABC

connet activity-based costing

connet Atanasoff-Berry Computer

connet An approach to understanding where and why costs are incurred within an enterprise.

connet First digital calculating machine that used vacuum tubes

ABEND

connet abnormal end

connet Absent By Enforced Net Deprivation

connet A type of system error in which a task or program fails to execute properly (i.e., "abnormally ends"). The term is also used as the name for a type of error message that indicates such a failure has occurred.

connet Sent in e-mail subject lines warning friends and others of forced loss of Internet access

ABI application binary interface A set of specifications that enables an application written for one target OS and hardware platform to run on a different OS and platform, where the two hardware platforms share the same processor type.
ABLE Agent Building and Learning Environment A Java framework and toolkit for constructing and deploying intelligent agents.
ABM activity-based management The use of ABC principles in the ongoing management of costs and resources.
ABME asynchronous balanced mode extended In communications, an operational mode in which modulus 128 sequence numbers are used.
ABR Automatic Baud Rate detection The process in which a receiving device examines the first character of an incoming message to determines its speed, code level, and stop bits.
ABR available bit rate An ATM service category. ABR service is conceptually similar to that of a frame relay network - a minimal cell rate is guaranteed, and bursts can be supported if the network resources allow it.
ACA Australian Communications Authority The Australian government body that regulates the nation's communications industries.
ACAP Application Configuration Access Protocol a standard for accessing program configuration information from a remote server, allowing a user to use and change their configuration from any workstation by reading or writing the values on a central server. Defined in RFC 2244.
ACC Adaptive Cruise Control

Authorization Contract for Containers

Adaptive Cruise Control

Specification (JSR-115) that defines new java.security.Permission classes to satisfy the J2EE authorization model

ACCU Association of C and C++ Users A worldwide association of people who are interested in C, C++, and related programming languages.
ACD

connet Automatic Call Delivery

connet automatic call distributor or distribution

connet feature that allows cellular & wireless phones to receive incoming calls when roaming.

connet specialized phone system that handles many incoming calls. ACDs are used for a variety of order-taking functions, such as calls to help desks or dispatching of service technicians.

ACDI Asynchronous Communications Device Interface A software device that permits asynchronous transmission, a way of transmitting data in which one character is sent at a time, and there may be uneven amounts of time between characters.
ACE

connet access control entry

connet Adobe Certified Expert

connet Advanced CMOS-ECL

connet Agile Communication Environment

connet a set of identities and permissions that are directly associated with a particular resource. Each access control entry is directly associated with only one resource. More than one ACE can be associated with each resource.

connet a professional who has demonstrated proficiency with one or more Adobe software products.

connet A high-end processor technology introduced by Hitachi in the 1990s.

connet Nortel SIP-based platform acquired by Avaya

ACEE access control environment element In RACF, a control block containing details of the current user, including user ID, current connect group, user attributes, and group authorities.
ACF Advanced Communications Function A family of IBM communications programs that handle tasks such as resource sharing and distribution of functions. They include ACF/Virtual Telecommunications Access Method (ACF/VTAM) and ACF/Network Control Program (ACF/NCP).
ACF2 Access Control Facility 2 A host-based security subsystem from CA (formerly Computer Associates); also known as CA-ACF2.
ACG adaptive code generation A technology that enables a program that uses processor features of a given system model to continue to work correctly when the program is moved to another system model that does not have all the processor features of the original model.
ACH automated clearinghouse A type of funds transfer network that processes debit and credit transactions between accounts from participating financial institutions.
ACI access control information Data that identifies the access rights of a group or principal.
ACID atomicity, consistency, isolation, durability Four well-established tests for verifying the integrity of business transactions in a data-processing environment.
ACK acknowledgement When a modem receives a data packet, it sends a signal back to the sending modem. If all the data is present and correct, it sends an ACK signal, which acts as a request for the next data packet.
ACL

connet Access control list

connet application connectivity link

connet Asianet Communications Limited

connet Asynchronous Connectionless Link

connet A list of authorised users, processes or systems.

connet A service that transmits out-of-band information between DirectTalk and the Siemens Hicom 300 switch.

connet an Indian media conglomerate jointly owned by STAR TV and Jupiter Entertainment.

connet type of data packet (data only).

ACM Association for Computing Machinery

Address Complete Message

a worldwide association of computer professionals headquartered in the United States. www.acm.org

Address Complete Message

ACMS Application Control and Management System A transaction-processing monitor from Compaq (now part of Hewlett-Packard); originally a product of Digital Equipment, which Compaq acquired in 1998.
ACP array control processor A type of processor used in storage systems.
ACPI Advanced Configuration and Power Interface A standard developed by Intel, Microsoft and Toshiba to improve PC power management and plug-and-play capabilities.
ACR

connet Allowed Cell Rate

connet attenuation-to-crosstalk ratio

connet An ABR service parameter, ACR is the current rate in cells/sec at which a source is allowed to send.

connet A measure of signal quality in network cabling.

ACRI additional coding-related required information A specification that is required by an encoding scheme to complete its definition, which extends beyond the character set and code page elements.
ACROSS Automated Cargo Release and Operations Service System Automated Cargo Release and Operations Service System
ACS Affiliated Computer Services, Inc Xerox Corp.'s $6.4 billion acquisition of Affiliated Computer Services Inc.
ACSE Association Control Service Element The method used in International Organization for Standardization's OSI for establishing a call between two applications.
ACSLS Automated Cartridge System Library Software A Unix-based tape-library-sharing system from Storage Technology.
ACT access control template a reusable named authorization pattern that you can apply to multiple resources. An access control template consists of a list of users and groups and indicates, for each user or group, whether permissions are granted or denied.
ACU abstract code unit A measurement used by the z/OS XL C/C++ compiler for judging the size of a function. The number of ACUs that comprise a function is proportional to its size and complexity.
AD

connet Active Directory

connet Administrative Domain

connet The directory service portion of the Windows 2000 operating system. AD manages the identities and relationships of the distributed resources that make up a network environment.

connet Defined in RFC 1136. On the Internet, a group of networks, hosts, and routers operated by the same organization.

ADAPT Architecture, Design, Analysis and Planning Tool Architecture, Design, Analysis and Planning Tool
ADB Apple Desktop Bus Port on the Macintosh for a keyboard, a mouse, and other peripherals.
ADC

connet Advanced Direct Connect

connet Analog to Digital Converter

connet automated data collection

connet a peer-to-peer file-sharing protocol, based on the topology of the Direct Connect (DC) protocol.

connet Often referred to A/D, the analog to digital converter is an electronic device that transforms the analog signal to digital signal, helping interconnecting the two kinds of technology/gear.

connet The automated conversion of disparate types of information into computer records. ADC devices and technologies include bar code systems, optical character recognition and speech recognition.

ADCCP Advanced Data Communications Control Procedures A bit-oriented, ANSI-standard communications link-layer protocol.
ADDM

connet Application Discovery and Dependency Mapping

connet Automatic Database Diagnostic Monitor

connet BMC's application

connet analyzes the data in Oracle’s Automatic Workload Repository (AWR) to discover the actual cause behind performance problems

ADE

connet Application Data Export

connet application development environment

connet Technology by Oracle Databases

connet An product that offers a range of tools or features (for example, for programming, interface development and testing) to provide a complete "environment" for developing applications.

ADF

connet Activity Decision Flow

connet Application Development Facility

connet automatic document feeder

connet The format in which models are exported from WebSphere Business Integration Workbench into WebSphere Business Modeler.

connet An IBM program for developing IMS applications

connet a device for feeding documents into a SCANNER automatically, sheet by sheet

admin ADMINISTRATOR the account name used by the system administrator under Windows NT and its successors
ADI

connet Analog Devices, Inc.

connet Application Desktop Integrator

connet leader in high performance signal processing solutions http://www.analog.com/

connet Spreadsheet-based extension of Oracle Applications. It provides full-cycle accounting within the comfort and familiarity of a spreadsheet for General Ledger and Oracle Assets

ADK Additional Decryption Key Key to be able to decrypt data even if the private key owner is unwilling to provide the private key
ADL Advanced Distributed Learning A set of standards designed to facilitate the sharing of learning objects across different learning management systems.
ADM

connet Agile development management

connet Application
Development Manager

connet Agile development management

connet Oracle Siebel's product that reduce the deployment efort and application downtime and to increase the application deployment quality

ADMD Administration Management Domain or Administrative Management Domain A public e-mail message service that uses the X.400 protocol.
ADMF Asynchronous Data Mover Facility A IBM mainframe feature designed to enhance system performance in data moves between central and expanded storage.
ADN Advanced Digital Network

application delivery networking

ADN refers to a 56Kbps leased-line.

ADN is an approach and a suite of technologies that comprises application security, application acceleration and network availability.

ADO ActiveX Data Objects A high-level data access object model introduced by Microsoft in 1996.
ADP Accidental Damage Protection A hardware support agreement covering physical damage to aproduct caused by or resulting from a fortuitous incident. Accidents covered include liquid spills, drop impact, electrical surges, and accidental breakage.
ADPCM adaptive differential pulse code modulation A speech-coding method that calculates the difference between two consecutive speech samples in standard pulse code modulation (PCM) coded telecommunications voice signals.
ADS

connet Active Directory Service

connet Asynchrous Data Switching

connet Windows 2000 network objects database that stores each specific network item in a central database and that may be replicated

connet A PBX system that supports asynchronous data.

ADSI

connet Active Directory Services Interface

connet Analog Display Services Interface

connet A Microsoft Active Directory feature that enables Windows 2000 applications to interact with other directory services without the need to know the details of the underlying protocols.

connet Protocol that simplifies use of advanced features by displaying text messages, generated by a remote computer or central office switch, on a user's telephone display or television set.

ADSL Asynchrous Data Switching Line
A digital local loop using copper facilities and providing greater bandwidth in one direction than the other.
ADSM ADSTAR Distributed Storage Manager An IBM product which provides services for backing up, archiving and restoring data files by allowing a central workstation to act as a server for networked workstations and personal computers.
ADSR Attack, Decay, Sustain, Release the four parameters in a basic synthesizer. While Sustain is a level control, the Attack, Decay and Release are time and ratio-dependant parameters. When a key is pressed, the Attack determines the ratio with which it reaches a top level and the begins to fall at the ratio of the Decay parameter down to the level set by the Sustain value.
ADSTAR Automated Document Storage and Retrieval IBM's name for its storage products business in the 1990s.
ADT

connet Abstract Data Type

connet admission, discharge and transfer

connet application deployment template

connet a class of data structures described by means of a set of operations rather than by physical representation, such as a class in object-oriented programming.

connet A category of hospital software. An ADT system records admissions to, discharges from and transfers within a hospital, and maintains the hospital census.

connet A combination of the logical deployment template and the network topology template that describes the deployment of application modules on servers and clusters.

ADTG Advanced Data Table Gram Microsoft Proprietary binary format for storing database data
ADUC Active Directory Users and Computers A snap-in in the Microsoft Management Console (MMC)
AEC Architecture, Engineering, Construction A computer graphics market requiring specialized applications that facilitate efficient planning, design, drafting, and analysis.
AES

Advanced Encryption Standard

A competition is currently underway to define a public 256-bit symmetric encryption algorithm that will replace DES (Data Encryption Standard).

AF

connet Assured Forwarding

connet audio frequency

connet Using AF, a provider may offer different levels of service for IP packets received from a customer domain. Each AF class is allocated a specified amount of buffer space and bandwidth

connet a frequency within the range of human hearing, 20 to 20,000 hertz

AFC antiferromagnetically coupled A type of storage media that uses an advanced magnetic coating expected to dramatically increase HDD capacity. IBM shipped the first AVC-based storage products in 2001.
AFI Authority and Format Identifier This identifier is part of the network level address header.
AFIS Automated Fingerprint Identification System
a biometric ID methodology that uses digital imaging technology to obtain, store, and analyze fingerprint data. The AFIS was originally used by the U.S. Federal Bureau of Investigation (FBI) in criminal cases.
AFK Away From Keyboard An example of Internet shorthand used in chat rooms, E-Mail, and instant messages.
AFM Atomic Force Microscope a powerful tool to manipulate matters at the nanoscale. It is today used for imaging a wide range of surfaces such as glass, composites, ceramics, polymers and biological samples. AFM finds increasing application in nanotechnology and biophysics.
AFP

connet Advanced Function Printing

connet Apple Filing Protocol

connet An IBM all-points-addressable enterprisewide print architecture.

connet A client/server protocol used by Apple file service to share files and network services. AFP uses TCP/IP and other protocols to support communication between computers on a network.

AFL Academic Free License permissive free software license written in 2002 by Lawrence E. Rosen
AGC Automatic Gain Control Most often used in audio circuits; an electronic circuit which automatically increases the volume when someone is speaking quietly and drops the volume when someone is speaking loudly, to keep the transmitted signal constant.
AGP Accelerated Graphics Port An Intel technology for desktop systems. It increases system performance by offloading graphic requirements from the system bus to a bus dedicated to video processing.
AHCI Advanced Host Controller Interface an interface specification that allows the storage driver to enable advanced SATA features such as Native Command Queuing and hot plug.
AHP analytical hierarchy process A process that uses hierarchical decomposition to deal with complex information in multicriterion decision making, such as information technology vendor and product evaluation.
AI

connet Action Indicator

connet Adobe Illustrator

connet artificial intelligence

connet AI is an ISDN term

connet AI is a draw program for Macintosh and Windows. It is especially useful for technical drawing.

connet AI is the use of computers to simulate human thinking. Artificial intelligence is concerned with building computer programs that can solve problems creatively

AIA Application Integration Architecture Application Integration Architecture
AID attention identifier A character in a data stream that is sent to the host system when a display station user presses an AID key. Typical AID keys are function keys or the Clear, Enter, Page Up, Page Down, Help, Print, and Home keys.
AIM AOL Instant Messenger an application that allows computer users to correspond with friends while online
AIN Advanced Intelligent Network Introduced by AT&T Network Systems in 1991, AIN enables service providers to define, test and introduce new multimedia messaging, personal-communication and cell-routing services.
AIO all in one These are printers that are a combination of various devices in one machine, including printer, scanner, fax machine and copier.
AIOD Automatic Identified Outward Dialing An option on a PBX that specifies the extension number instead of the PBX number on outward calls. Used for internal billing.
AIP Advanced Inspection and
Prevention
Cisco ASA add-in modules
AIR Additive Increase Rate An ABR service parameter, AIR controls the rate at which the cell transmission rate increases. It is signaled as AIRF, where AIRF = AIR*Nrm/PCR.
AIT Advanced Intelligent Tape An eight-millimeter helical-scan tape drive designed and manufactured by Sony. Sony has differentiated its AIT drive from other 8-millimeter tape drives with a unique media feature on the tape cartridge called memory in cassette (MIC).
AIX Advanced Interactive Executive
AIX is an operating system developed by IBM and is in fact Unix-based.
Ajax Asynchronous JavaScript and XML A way of including content in a web page in which javascript code in the web page fetches some data from a server and displays it without re-fetching the entire surrounding page at the same time (hence the 'Asynchronous')
AJP Apache JServ Protocol Binary, packet-oriented protocol bridging the web server with the servlet container. The web server attempts to maintain persistent TCP connections to the servlet container, and to reuse a connection for multiple request/response cycles
AL PA Arbitrated Loop Physical Address In Fibre Channel transmissions, an 8-bit value used to identify a participating device in an arbitrated loop.
ALET access list entry token A token that serves as an index into an access list.
ALG Application Layer Gateway Used in conjuction with NAT to allow IP address translation
ALGOL ALGOrithmic Language a pair of programming languages that had a strong impact on programming language design.
ALI Application layer interface
The ALI forms the interface for the application layer in the OSI reference model. It provides a clearly defined separation of communication and application
ALM

connet Application Life Cycle Management

connet Asset Lifecycle Management

connet Asynchronous Line Multiplexer

connet the facility for common process workflow and consolidation of planning, management, measurement and reporting of work item activities in the development process.

connet Asset Lifecycle Management

connet A device that connects multiple terminals or other serial interface devices to Sun network file servers or workstations. Also known as "multiple terminal interface."

ALP Application Layer Program / Protocol A program or network protocol at the Application Layer
ALSA Advanced Linux Sound Architecture Linux kernel component intended to replace the original Open Sound System for providing drivers for sound cards.
ALT alternative

connet Used in an HTML tag for the benefit of people using nongraphical browsers, or for people using a browser with graphics turned off.

connet A top-level category of "alternative" USENET newsgroups.

connet The Alt key on the keyboard of PC compatibles, typically used in conjunction with other keys.

ALU

connet Alcatel-Lucent

connet arithmetic logic unit

connet A leader in fixed, mobile and converged broadband networking, IP and optics technologies, applications and services www.alcatel-lucent.com

connet A CPU's core element, which carries out arithmetic computations.

AM Amplitude Modulation A particular technology, most commonly used in radio broadcasting, where blending a modulated signal into a carrier wave by varying the amplitude of the carrier creates the final transmit frequency.
AMA automatic message accounting A function that automatically documents billing data related to subscriber-dialed long-distance calls.
Amanda (formerly) Advanced Maryland Automatic Network Disk Archiver an open source computer archiving tool that is able to back up data residing on multiple computers on a network. http://www.amanda.org/
AMD

connet Active Matrix Display

connet Advanced Microchip Devices

connet architected model-driven

connet LCD technology, used for computer screens, in which there is a transistor for each pixel, which prevents losing image quality between scans.

connet A semiconductor manufacturer and is a major competitor of Intel. They manufacture the Athlon, Duron, and K6 CPU chips.  www.amd.com

connet SOA tools that automate models and rules

AME Advanced Metal Evaporated A media formulation manufactured by Sony for use in its consumer and computer product lines.
ami Analyze, Metricate, Improve A method for software project management and process improvement.
AMI

connet advanced metering
infrastructure

connet Alternate Mark Inversion

connet Application Messaging Interface

connet utility-focused applications

connet Line coding format used on T1 facilities that transmits ones by alternate positive and negative pulses.

connet The programming interface provided by WebSphere MQ that defines a high level interface to message queuing services.

AML

connet Anti-Money-Laundering

connet Astronomical Markup Language

connet Verify the identity of any person seeking to open an account, determine the source and destination of their funding, and check the account opener's name against any government-provided lists of known or suspected terrorists or terrorist organizations.

connet A standardized format for exchange of metadata related to astronomy. This language will enhance the ability of astronomers to retrieve scientific data, and make it possible for humans and intelligent agents to use the same information.

AMMA Advanced Memory Management Architecture Strategies for providing sufficient memory to all the processes in a computer system, performed by the memory management unit.
AMP

connet ampere (A)

connet amplifier

connet Asymmetric Multi-Processing

connet a measurement of electrical current. One coulomb flowing per second.

connet a term used for devices that increase output of sound or electrical voltage or current.

connet an option built into many current operating systems to share CPU functions between two mirrored servers.

AMPS Advanced Mobile Phone System The original standard specification for analog systems. Used primarily in North America, Latin America, Australia and parts of Russia and Asia.
AMR

connet Audio Modem Riser

connet Automatic meter reading

connet an Intel specification that defines a new architecture for the design of motherboards.

connet the technology of automatically collecting consumption, diagnostic, and status data from water meter or energy metering devices (water, gas, electric) and transferring that data to a central database for billing, troubleshooting, and analyzing.

AMRF Action Message Retention Facility A z/OS facility that, when active, retains all action messages except those specified by the installation.
AMS access method services

Analog/Mixed-Signal

Application Management Services

A multifunction utility named IDCAMS that is used to manage catalogs, devices, and both VSAM and non-VSAM data sets.

Analog/Mixed-Signal

Application Management Services

AMT

connet Active Management Technology

connet address mapping table

connet Allows the IT team to better discover, heal, and protect their networked computing assets

connet A table that provides a current mapping of node addresses to hardware addresses.

AMTA American Mobile Telecommunications Association AMTA represents and promotes the interest of specialized wireless communications, meeting the educational, informational and regulatory needs of licensees and related businesses. See them at AMTAUSA.ORG.
ANDF Architecture-Neutral Distribution Format an emerging OSF standard for software distribution. Programs are compiled into ANDF before distribution, and executables are produced from it for the local target system.
ANI Automatic Number Identification The number associated with the telephone station from which switched calls are originated or terminated.
Anon FTP Anonymous FTP A method for downloading and uploading files using FTP protocol without having a username or a password.  In place of a username, word "anonymous" is used, and in place of a password, email address is usually used.
ANOVA analysis of variance A form of statistical analysis.
ANR automatic network routing In High-Performance Routing (HPR), a highly efficient routing protocol that minimizes cycles and storage requirements for routing network layer packets through intermediate nodes on the route.
ANSI American National Standards Institute the main industrial standardization organization in the United States. There are official ANSI standards in almost all industries, and many of them have to do with computers. www.ansi.org
ANX Automotive Network Exchange Established by the Automotive Industry Action Group to offer extranet-based applications to suppliers of Chrysler, Ford and General Motors.
AOA angle of arrival Based on triangulation, a method of processing cellular phone signals, AOA allows the physical position of switched-on wireless devices to be located.
AOCE Apple Open Collaboration Environment Macintosh System 7 extensions that make it possible to share e-mail, directory, and other services in a multiplatform environment.
AoE Ata Over Ethernet Network protocol designed for simple, high-performance access of SATA storage devices over Ethernet networks. It gives the possibility to build SANs with low-cost, standard technologies
AOF

connet Advanced Open File

connet application object file

connet Backup exec option backs up open files during a backup job

connet An ASCII text file that contains the names of the global description file and the component description files, which together describe the management characteristics of an application.

AOL America Online

Application Object Library

AOL is founded in 1985, America Online, based in Dulles, Virginia, has become the world's leader in interactive services, Web brands, Internet technologies, and e-commerce services. www.aol.com

AOL stand for Application Object Library

AOR Address of Record
An SIP term, an AOR provides a single public address for all telecommunications. The AOR can be mapped across multiple devices and media types.
AP access point a hardware device or a computer's software that acts as a communication hub for users of a wireless device to connect to a wired LAN. APs are important for providing heightened wireless security and for extending the physical range of service a wireless user has access to.
APA all-points addressable Able to address, reference, and position text, overlays, and images at any defined position or picture element (pel) on the printable area of the paper.
APaaS application platform as a
service
application platform as a service
APACS Association for Payment Clearing Services The organization that manages U.K. payment systems.
APaRT automated packet recognition/translation Technology that allows a server to be attached to CDDI or FDDI without requiring the reconfiguration of applications or network protocols.
APC

connet asynchronous procedure call

connet American Power Conversion

connet Antenna Phase Center

connet A kernel-defined control object which represents a procedure that is called asynchronously within a particular thread context.

connet American Power Conversion

connet A theoretical point in the guidance receiver for which a position is derived.

APDU application-layer protocol data unit In OSI, a protocol data unit in the application layer.
APF Automated Purposing Framework Collection of scripts and utilities that enable you to consistently and reliably prepare computer hardware (BIOS, mass storage) and install the Windows operating system and layered products on one or more build computers
API

Application Programming Interface

Advanced Photonix, Inc

An interface to a computer operating system or software program that gives other programs access to functions similar to those offered to users through a graphical user interface.

a leading supplier of opto-electronic solutions and Terahertz sensors and instrumentation to a global OEM ...advancedphotonix.com/
APM

connet Active policy management

connet Advanced Power Management

connet application performance management

connet analyzes unstructured content in documents and e-mails, and applies the appropriate rules for access, life cycle management and oversight.

connet A feature from Intel and Microsoft for battery-powered computers, which powers-down or the display when the computer has been inactive for a certain length of time in order to conserve power.

connet application performance management

APML Attention Profiling Markup Language used to consolidate and aggregate individual users' ranked interests
APNIC Asia Pacific Network Information Center Nonprofit Internet registry organization for the Asia Pacific region. The other Internet registries are currently IANA, RIPE NCC, and InterNIC. http://www.apnic.net/
APO Advanced Planner and Optimizer A supply-chain-planning suite from SAP.
APOP Authenticated Post Office Protocol similar to the POP protocol except that APOP enables your password to be encrypted while being transmitted over the network.
APOT Alternate (Additional) Point of Termination form identifies specific collocation terminations at the ICDF frame where the CLEC "UNE termination cables" are terminated. These terminations are used for the purpose of ordering UNEs, Ancillary Services, or Finished Services.
app application a computer program that performs useful work not related to the computer itself. Examples include WORD PROCESSORs, PRESENTATION GRAPHICS programs
APPC Advanced Program-to-Program Communication The programming interface to LU 6.2, IBM's protocol for peer-to-peer program communication under SNA.
APPN Advanced Peer to Peer Networking IBM data communications support that routes data between Advanced Peer-to-Peer Communication (APPC) systems to enable users anywhere on the network to have direct communication with each other.
APR Apache Portable Runtime Its mission is to provide a free library of C data structures and routines, forming a system portability layer to as many operating systems as possible, including Unices, MS Win32, BeOS and OS/2
APS

connet advanced planning and scheduling

connet Automatic Protection Switching

connet A subcomponent of supply chain planning (SCP) that focuses on manufacturing planning and scheduling.

connet A mean for automatically detecting and signalling a transmission link failure

APWG Anti-Phishing Working Group
an international membership organization that seeks to eliminate fraud based on attacks from phishing and e-mail spoofing. These attacks hurt legitimate businesses as the attackers fraudulently use the identity of an established organization in their attack.
AQCB Automated Quote Contract Billing System used to price non-tariffed products and services.
AR

connet Access Rate

connet Augmented reality

connet The data rate of the user access channel. The rate (maximum) at which access devices can offer data to the frame relay network

connet a technology that superimposes graphics, audio and other virtual enhancements over a live view of the real world. It is this "real world" element that
differentiates AR from virtual reality.

ARA Apple Remote Access Communication software designed to offer remote access to an AppleTalk-compatible network via an ARA server.
ARAD architected rapid application development SOA tools that automate models and rules
ARAG AntiReflection AntiGlare There are add-on screens for monitors that eliminate screen glare and protect the user’s eyes.
ARC Ames Research Center

Archive

NASA facility is charged with the mission of assisting with better life quality on earth, human exploration, space travel and the search for life on other planets. www.nasa.gov/centers/ames

Archive

ARCNET Attached Resource Computer NETwork a LAN protocol, similar in purpose to Ethernet or Token Ring.
ARD Automatic Ring Down Private line connecting a station instrument in one location with a station instrument in another location. When station one is off hook, station two rings. Also called "hot line".
ARIA Accessible Rich Internet Applications ARIA, also WAI-ARIA, defines a way to make Web content and Web applications more accessible to people
ARIN American Registry for Internet Numbers the Internet registry service for North and South America, as well the Carribean and sub-Saharan Africa. http://arin.net/
ARL ABLE Rule Language A rule-based programming language that is used to express business logic outside of program logic. ARL provides tight integration with Java objects, and the tooling provided with ABLE is based on the Eclipse platform.
ARM Advanced RISC Machines

Asynchronous Response Mode

Active Registry Monitor

a RISC processor find most of their use on hand-held machines and PDAs. Currently owned by Intel, and currently produced by both the above and Digital/Compaq.

Asynchronous Response Mode

Active Registry Monitor

ARP Address Resolution Protocol A method for finding a host's Ethernet address from its Internet address. It works like this: The sender broadcasts an ARP packet containing the Internet address of another host and waits for it to send back its Ethernet address.
ARPANET Advance Research Projects Agency Network A packet-switched network developed in the early 1970s. The “father” of today’s Internet. ARPANET was decommissioned in June 1990. http://www.arpa.mil/
ARQ automatic repeat request A modem status signal indicated by a light on the modem; in cases of transmissions errors, the ARQ is a request to the sender to retransmit.
ARS

connet Action Request System

connet automatic route selection

connet call tracking and resolution software provided by BMC Software

connet Device (or software) which chooses the lowest cost route for long-distance calls over specific lines or services, including WATS, leased, specialized non-Bell common carriers or direct distance dialing (DDD).

ART Additional Reference Transmission ART is carrier term
ARTS Association for Retail Technology Standards Data Model standard
ARu audio response unit Output device which provides a spoken response to digital inquiries from a telephone or other device. The response is usually assembled by a computer from a prerecorded vocabulary of words. 
AS/400 Application System/400 A midrange computer system introduced by IBM in 1988 as a replacement for its System/36 and System/38 product families.
AS2 Applicability Statement 2
a specification for EDI between businesses using the Internet's Web page protocol, HTTP. The specification is an extension of the earlier version, Applicability Statement 1 (AS1).
ASA average speed of answer A standard quantitative method for measuring the speed at which call center calls are answered.
ASBR Autonomous System Boundary Router ASBRs run both OSPF and another routing protocol, such as RIP. ASBRs must reside in a nonstub OSPF area.
ASC Abstract Syntax Checker In OSI, a utility program for OSI Communications Subsystem that processes user-specified ASN.1 statements
ASCII

American Standard Code for Information Interchange

pronounced as-kee, standard way of encoding characters into digital codes. An ASCII file is taken to mean a text file containing unformatted text that is, characters but not information about fonts, sizes and so on.

ASCL Asianet Satellite Communications Limited dataline, broadband internet, leading ISP in kerala. asianet.co.in
ASE

connet Adaptive Server Enterprise

connet application service element

connet relational database management system product of Sybase Corporation, is a direct descendant of Sybase SQL Server.

connet A set of functions in the application layer of OSI that provides a capability for the interworking of application entities for a specific purpose on a single application association.

ASF

connet Advanced Streaming Format

connet Automatic Sheet Feeder

connet set of standards from Microsoft that is utilized in WMP7 technology.

connet The technology dictates the different ways printers feed paper. Dot matrix printers usually run on a continuous Web of paper while laser printers or ink jet type printers are generally single sheet. They are also often referred to as page printers.

ASIC Application-Specific Integrated Circuit A chip with custom-built hardware circuits for a particular set of functions. ASICs are commonly used in networking devices to maximize performance and provide integration of multiple functions into a single chip.
ASIF access security information field In SNA, a field within Function Management Header Type 5 (FMH-5), which is used to convey security information.
ASIS access security information subfield In SNA, a subfield within Function Management Header Type 5 (FMH-5), which is used to convey security information.
ASK Anomalous State of Knowledge ASK is a programming term
ASLR Address Space Layout Randomization a process which entails arranging the positions of major data areas randomly in virtual address space. Microsoft's Windows Vista and Windows Server 2008 have ASLR enabled by default
ASLS Analog Single Line Station a telephony term. An extension port on a PABX/KSU that will allow a standard household type phone to interface with the system.
ASM

connet Auto-sequencing memory

connet Automatic Storage Management

connet Anti machine data memory including data counters to be programmed by flowware to generate the data streams at run time.

connet Oracle 10g database feature that provides the database administrator with a simple storage management interface that is consistent across all server and storage platforms

ASML originally ASM Lithography (ASM for Advanced Semiconductor Materials) largest supplier in the world of photolithography systems for the semiconductor industry, founded in 1984 as a joint venture between the Dutch companies Advanced Semiconductor Materials International (ASMI) and Philips. www.asml.com
AS Activesync AS is Microsoft software
AS / ASN autonomous system (number) A number assigned to a local network, registered into the carrier's routing community and placed under the umbrella of an administrative domain called an autonomous system
ASN Abstract Syntax Notation The International Organization for Standardization's OSI language for describing abstract syntax.
ASN.1 Abstract Syntax Notation One In OSI, a notation for defining data structures and data types. The notation is defined in international standards ISO 8824/ITU X.208 and ISO 8825/ITU X.209.
ASO Address Supporting Organization

ICANN Supporting Organization responsible for reviewing and developing recommendations on IP address policy

aso.icann.org

ASP

connet Abstract Service Primitive

connet Active Server Pages

connet Application Server Process

connet Application Service Provider

connet Aspect Oriented Programming

connet Average Selling Price

connet Implementation-independent description of interaction between service-user and service-provider at particular service boundary, as defined by OSI.

connet a Microsoft technology, allows programmers to develop custom code that works with Microsoft's IIS.

connet Application Server Process

connet Sometimes refered to as an "app-on-tap," this is a third-party company that distributes software-based services from a central location to customers in other locations.

connet Aspect Oriented Programming

connet This term is used in the microchip manufacturing world. Companies like AMD and Intel strive for high ASPs. The ASP is an indication not only of direct profits, but how well a company is keeping up with the technology curve.

ASPI Advanced SCSI Programming Interface An interface from Adaptec that allows application programs to access SCSI hardware. See SCSI.
ASPX Active Server Pages eXtended Dynamic web pages engine for the Microsoft .NET framework
ASR Access Service Request

Automatic Speech Recognition

Automated System Recovery

Access Service Request

Automatic Speech Recognition

Automated System Recovery

ASQ

Automated Software Quality

 

The use of software tools, such as automated testing tools, to improve software quality.

 

ASR

connet Automatic Send and Receive

connet automatic speech recognition

connet Automated system recovery

connet Any one of several devices designed to transmit and receive data unattended, in contrast with RO, "receive only" devices.

connet Another name for speech recognition technology.

connet One of several backup mechanisms on Windows XP. ASR is intended to be taken infrequently, whenever there are changes in the system.

ASV Approved Scanning Vendor Company approved by the PCI SSC to conduct external vulnerability scanning services.
AT Advanced Technology the class of IBM PCs originally introduced in 1984 using the 80286 microprocessor and a 16-bit bus
AT&T American Telephone And Telegraph The USA's major common carrier for long distance telephone lines.
ATA

connet Actual Time of Arrival

connet Advanced Technology Attachment

connet Analog Telephone Adaptor

connet Actual Time of Arrival

connet An integrated bus usually used between host processors and disk drives. Used interchangeably with IDE.

connet connects the conventional telephone to the Internet, converts the analog voice signals into IP packets, delivers dial tone and manages the call setup.

ATAG Authoring Tool Accessibility Guidelines W3C recommendation that explains how to develop authoring tools that make it easier to produce accessible Web pages that conform to the Web Content Accessibility Guidelines (WCAG)
ATAPI AT Attachment Packet Interface A hardware and software specification that documents the interface between a host computer and CD-ROM drives using the ATA bus.
ATB all trunks busy A single tone interrupted at a 120 impulses per minute (ipm) rate to indicate all lines or trunks in a routing group are busy. 
ATCA Advanced Telecom Computing Architecture
ATCA provides the telecommunications industry with an opportunity to adopt a standard architecture for a broad spectrum of products, including wireless access, wireless core networks, and IP Multimedia Subsystem IMS network elements.
ATG

connet advanced technology group

connet Art Technology Group

connet A group charged with researching, tracking and evaluating emerging technologies for an enterprise, and with prototyping and piloting advanced-technology projects prior to deployment.

connet A developer of online customer relationship management applications, headquartered in Cambridge, Massachusetts.

ATI

Allied Telesyn International

Networking hardware manufacturer

ATL

connet Active Template Library

connet automated tape library

connet A group of routines provided by Microsoft that can be used to help more easily create ASP, ActiveX, and COM objects in C++.

connet A system used for high-capacity, tape-based data storage. ATLs typically have dozens of drives and can accommodate hundreds tape cartridges.

ATLAS Authorization Token Layer Acquisition Service Describes the service needed to acquire authorization tokens to access a target system using the CSIv2 protocol. This design defines a single interface with which a client acquires an authorization token
ATM

connet Adobe Type Manager

connet asynchronous transfer mode

connet automated teller machine

connet a software program or system extension manufactured by Adobe Systems that is used to enhance the display of screen fonts on computer monitors,

connet a transfer mode for switching and transmission that efficiently and flexibly organizes information into cells. It is asynchronous in the sense that the recurrence of cells depends on the required or instantaneous bit rate.

connet A public banking machine that customers can access by inserting or swiping a magnetic card and entering a password.

ATO assemble to order A strategy allowing a product or service to be made to meet the custom requirements of a specific order, where a large number of such customized products can be assembled in various forms from common components.
Atom

connet Any Transport over MPLS

connet Atom

connet a technology developed by Cisco for transporting Layer 2 packets over an IP/MPLS backbone.

connet Atom is the name of an XML-based Web content and metadata syndication format, and an application-level protocol for publishing and editing Web resources belonging to periodically updated Web sites.

ATP

connet AppleTalk Transaction Protocol

connet available to promise

connet In AppleTalk networks, a protocol that provides client/server request and response functions for hosts accessing the ZIP for zone information.

connet The uncommitted portion of a company's inventory or planned production. This figure is frequently calculated from the master production schedule and is maintained as a tool for order promising.

ATPCO Airline Tariff Publishing Company

The central database where airlines file and publish their fares

ATRAC Adaptive TRansform Acoustic Coding Audio compression algorithm, introduced by Sony for its Mini Disk, which relies on the masking of low-amplitude frequency components by temporaly adjacent high-amplitude components
ATRN Authenticated Turn Authenticated Turn
ATS Abstract Test Suite

Applications Technology Satellite

Air to Surface

Abstract Test Suite

Applications Technology Satellite

Air to Surface

ATSC Advanced Television Systems Committee an international, non-profit organization developing voluntary standards for digital television.
ATTIS AT&T Information Systems A division of AT&T Technologies that supplies and manufactures CPE.
ATU-C / ATU-R ADSL Transmission Unit, Central or Remote Device at end of ADSL line that stands between line and first item of equipment in subscriber premises or telephone switch. May be integrated within access node.
ATUL ADSL Termination Unit Remote ATUR is the ADSL modem or PC card that physically terminates an ADSL connection at the end user’s location.
ATVEF Advanced TV Enhancement Forum A standard for creating enhanced, interactive television content and for delivering that content to a range of television, set-top, and PC-based receivers (http://www.atvef.com).
ATX Advanced Technology eXtended A particular set of characteristics defining a generic type of motherboard, power supply and chassis combination. The definition came from Intel, along with a consortium of hardware and software makers to define the ability of the design.
AUDIT AUtomated Data Input Terminal AUtomated Data Input Terminal
AUI Attachment Unit Interface a device that contains a 15-bit pin, or socket, and is used to connect a NIC with a standard Ethernet cable.
AUIML Abstract User Interface Markup Language An XML implementation that provides a platform and technology-neutral method of representing windows, wizards, property sheets, and other user interface elements.
AUP acceptable use policy a policy that a user must agree to follow in order to be provided with access to a network or to the Internet.
AUTOEXEC Automatic Execution When a program is executed on it's own.
AUTONEG Autonegotiation a feature that determines link options and optimal settings for a given Ethernet connection. When AUTONEG is enabled, a network interface card or a switch port can determine the capabilities of the device at the far end of the link and select the best mode of operation.
AUV Autonomous Underwater Vehicle a robotic device driven through water by a propulsion system. AUVs are self-sufficient vehicles carrying their own energy source.  The control of the vehicle is done using an onboard computer thus eliminating the need of operators located elsewhere.
AUX auxiliary device A peripheral device that may perform a useful function but is not necessary for the operation of the computer. Examples are printers, scanners, and modems.
AV

connet Anti Virus

connet Audio Video or Visual

connet Anti Virus software

connet pertaining to the recording and reproduction of sounds and pictures

AVD alternate voice data A single transmission facility which can be used for either voice or data. 
AVED AntiVirus Emergency Discussion list
A mailing list for professional antivirus researchers allowing them to alert other researchers to emerging or ongoing 'crisis' or 'emergency' virus events.
AVI Audio/Video Interleaved AVI is the most common format for audio/video data on the personal computer.
AVK Application Verification Kit Tool intended to help developers test their applications for correct use of J2EE APIs and portability across J2EE compatible application servers, and to help developers avoid inadvertently writing non-portable code
AVS Application Visualisation System a portable modular UNIX-based graphics package supported by a consortium of vendors including Convex, DEC, IBM, HP, SET Technologies, Stardent and WaveTracer.
AVST Applied Voice & Speech Technologies Inc. software company in the telecommunication industry http://www.avst.com/
AWD Access Workflow Designer Organize and track information
AVVID Architecture for Voice, Video and Integrated Data An architectural approach for integrating enterprise voice, video and data traffic over IP-based networks, introduced by Cisco Systems in 1999.
AWE Advanced WavEffects A series of sound cards from Creative Labs that includes the Sound Blaster AWE 32, the Sound Blaster AWE64, and the AWE64 Gold.
AWS

connet Advanced Wireless Services

connet Amazon Web Services

connet Autonomous Web Services

Amazon Web Services (AWS) delivers a set of services that together form a reliable, scalable, and inexpensive computing platform “in the cloud”. aws.amazon.com/

a collection of remote computing services

a next generation Web Services based on business process model harmonization among independent systems

AWT Abstract Window Toolkit In Java programming, a collection of GUI components that were implemented using native-platform versions of the components. These components provide that subset of functionality which is common to all operating system environments.
  a+ Pronounced A plus, a certification developed by the Computing Technology Industry Association (CompTIA) to validate vendor-neutral skills for entry-level computer technicians. Holders of the A+ certification have been trained in installing, repairing, troubleshooting, maintaining, customizing and operating PCs.
  AC97 The popular audio system from Realtek.
  acoustic coupler A special type of modem that converts acoustic energy (sound waves) into electrical energy, allowing a standard telephone handset to be attached to a computer or data terminal for data transmission. 
  ActiveX A Microsoft technology that facilitates various Internet applications, and therefore extends and enhances the functionality of Microsoft's Internet Explorer browser. Like Java, ActiveX enables the development of interactive content.
  Activity Streams a publish/subscribe notification mechanism that provides frequent updates to subscribers about the activities or events that relate to another individual.
  Ada a programming language developed in the late 1970s for the U.S. Department of Defense.
  Ad Hoc Network A decentralized wireless network in which each node is capable of forwarding data to other nodes without relying on an established access point. An ad hoc network can be created spontaneously as needed and requires no permanent infrastructure.
  Adwords an advertising service by Google for businesses wanting to display ads on Google and its advertising network. The AdWords program enables businesses to set a budget for advertising and only pay when people click the ads. adwords.google.com
  Aero The new user interface for Windows Vista, except for the Start and Home Basic editions.
  air interface a cellular industry term. It refers to the system that ensures compatibility between subscriber terminal equipment (i.e. cell phones and PDAs) and base stations. It involves the specification of channel frequencies and widths,
  air PBX an IP-PBX system in which traditional PBX desk phones are replaced by cell phones. The implementation can be via WLAN or cellular. Devices using software telephone ("softphone") technology can use all functions provided by the call manager.
  always-on An internet connection which remains on 24/7 such as ADSL or cable, rather than only connecting on demand like a dialup.
  Android Linux based operating system that is backed by Google and the other members of the Open Handset Alliance.
  Anonymous

With no traceability; unable to ascertain the actual identity of the claimed identity; very likely to imply naming that is intentionally opaque.

connet Anonymous FTP: Service supported by many Internet hosts. Typically, allows user to download documents, files, programs, and other publicly accessible data using FTP.

  antenna A metallic device used to transmit and receive electromagnetic waves. An antenna can be a passive or active device.
  applet This a Java program that can be embedded in a Web page. The difference between a standard Java application and a Java applet is that an applet can't access system resources on the local computer.
  archive Data that is important information, stored for a long period of time in some recording media such as magnetic tapes, storage arrays or other non-active hard disks.
  atom Atom is an alternate XML format for easily sharing content, much like RSS Really Simple Syndication (format). Blogs on http://www.blogger.com/ for example, publish Atom feeds.
  Autonomous Vehicles can drive itself from a starting point to a predetermined destination in "autopilot" mode using various in-vehicle technologies and sensors, including GPS navigation technology
  avatar

connet A graphical icon that represents a real person in a cyberspace system. When you enter the system, you can choose from a number of fanciful avatars. Sophisticated 3D avatars even change shape depending on what they are doing

connet A common name for the superuser account on UNIX systems. The other common name is root.

AVG AVG is a family of anti-virus and Internet security software for the Microsoft Windows, Linux, Mac OS X, and FreeBSD computing platforms, developed by AVG Technologies. http://www.avg.com
  AZERTY The standard French language keyboard layout. Term comes from the first six letters below the row of numbers.