AAL

ATM Adaptation Layer

ABATS

Automated Bit Access Test System

ABM

Accunet Bandwidth Manager (AT&T)

ABR

Available Bit Rate

AC

Access Control

AC

Address Copied

AC

Alternating Current

AC

Authentication Center

ACD

Automatic Call Distributor

ACELP

Algebraic Code Excited Linear Predictive

ACP

Access Control Point

ACS

Asynchronous Communications Server

ACTS

Advanced Communication Technology Satellite (NASA)

ADA

Americans with Disabilities Act

ADCR

Alternate Destination Call Routing (AT&T)

ADM

Add-Drop Multiplexer

ADN

Advanced Digital Network (Pacific Bell)

ADPCM

Adaptive Differential Pulse Code Modulation

ADSL

Asymmetrical Digital Subscriber Line

AFP

Apple File Protocol

Aglet

agent-applet (IBM Corp.)

AGRAS

Air-Ground Radiotelephone Automated Service

AIOD

Automatic Identification of Outward Dialed calls

AIN

Advanced Intelligent Network

ALI

Automatic Location Information

ALM

Anti-Locking Mechanism

AM

Amplitude Modulation

AMPS

Advanced Mobile Phone Service

ANI

Automatic Number Identification

ANR

Automatic Network Routing (IBM Corp.)

ANSI

American National Standards Institute

ANT

ADSL Network Terminator

AOL

America Online

AP

Access Point

APC

Access Protection Capability (AT&T)

API

Application Programming Interface

APPC

Advanced Program-to-Program Communications (IBM Corp.)

APPN

Advanced Peer-to-Peer Network (IBM Corp.)

APS

Automatic Protection Switching

ARCnet

Attached Resource Computer Network (Datapoint Corp.)

ARB

Adaptive Rate Based (IBM Corp.)

ARIB

Association of Radio Industries and Businesses (Japan)

ARP

Address Resolution Protocol

ARPA

Advanced Research Projects Agency

ARQ

Automatic Repeat Request

ARS

Action Request System (Remedy Systems Inc.)

AS

Autonomous System

ASCII

American Standard Code for Information Interchange

ASIC

Application Specific Integrated Circuit

ASN.1

Abstract Syntax Notation 1

ASTN

Alternate Signaling Transport Network (AT&T)

AT&T

American Telephone & Telegraph

ATDMA

Asynchronous Time...