Acronym Guide - A

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AAA - Authentication, Authorization and Accounting Services

AAA - Authentication, Authorization and Audit/Accounting

AAP - Alternative Access Provider

AAV - Automated Address Verification

ABS - Alternative Billing Service

ABS - Average Busy Season

AC - Access Customer

A-CAM - Alternative Connect America Cost Model                              

ACAT - Additional Cooperative Acceptance Testing

ACD - Automatic Call Distribution

ACH - Access Charge Handbook

ACN - Access Customer Name

ACNA - Access Customer Name Abbreviation

ACP - Anywhere Call Pickup

ACR - Alternate Carrier Routing

ACR - Automatic Carrier Routing

ACS - Automatic Configuration Server

AD - Administrative Domain

ADA - Abbreviated Dialing Arrangement

ADM - Add/Drop Multiplexing

ADM - Asymmetrical Digital Microcell

ADML - Asymmetrical Digital Microcell Link

ADSL - Asynchronous Digital Subscriber Line

ADSL2+ - Next Generation ADSL

AFR - Application for Review

AFUDC - Allowance for Funds Used During Construction

A-GPS - Assisted Global Positioning System

AI - Artificial Intelligence

AIN - Advanced Intelligent Network

AIS - Alarm Indication Signal

ALNP - Aggregated Line and Node Protection

ALT - Alternative Local Transport Provider

AM - Access Minute

AMA - Automatic Message Accounting

AME - Automatic Message Exchange

AML - Actual Measured Loss

AMOU - Access Minutes Of Use also MOU

AMR - Automatic Message Recording

AMRE - Automatic Message Recording Equipment

ANI - Automatic Number Identification

ANI - Average Net Investment

ANS - American National Standard

ANS - Ancillary Network Service

ANSI - American National Standards Institute

AOC - Access Order Charge

AOCN - Administrative Operating Company Number

AOS - Alternate Operator Service

APDU - Application Protocol Data Unit

API - Actual Price Index

API - Application Platform Interface

APS - Automatic Protection Switching

ARC - Access Recovery Charge

ARM - Access Recovery Mechanism

ARMIS - Automated Reporting Management Information System

ARRA - American Recovery and Reinvestment Act of 2009

AS - Average Schedule

ASCP - Access Service Connection Point 

ASEC - Area Specific Exchange Carrier

ASG - Access Service Group

ASM - Any-Source Multicast

ASOG - Access Service Ordering Guidelines

ASON - Automatically Switched Optical Network

ASR - Access Service Request

ASTN - Automatic Switched Transport Network

AT - Access Tandem 

ATIS - Alliance for Telecommunications Industry Solutions

ATM - Asynchronous Transfer Mode

ATM-CRS - Asynchronous Transfer Mode Cell Relay Access Service

ATV - Advanced Television Service

AWC - Area Wide Centrex