AT&T 7400 series Manuel D’Utilisation

ABBREVIATIONS

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4ESS

number 4 electronic switching system

5ESS

number 5 electronic switching system

AAR

Automatic Alternate Routing

ACA

Automatic Circuit Assurance

ACD

Automatic Call Distribution

ACP

action control point (for SDN)

ADPCM

adaptive differential pulse-code modulation

ADU

asynchronous data unit

AMI

alternate mark inversion

APLT

advanced private-line termination

ARS

Automatic Route Selection

AUDIX

Audio Information Exchange

B8ZS

binary-8 zero-suppression (line coding)

BCC

bearer capability class

BCCOS

bearer capability class of service

BEHO

best end hop off

BOS

bit-oriented signaling

BRI

basic rate interface

CAD/CAE

computer assisted design/computer assisted engineering

CAS

Call Accounting System
Centralized Attendant Service

CCSA

common control switching arrangement

AB-1