Instruction manual

Glossary and Abbreviations
GL-1
DEFINITY® Business Communications System and GuestWorks® Issue 6
Overview
555-231-208
Issue 1
April 2000
GL
Glossary and Abbreviations
A
AAR
See Automatic Alternate Routing (AAR)
.
Abbreviated Dialing (AD)
A feature that allows callers to place calls by dialing one or two digits.
AC
1. Alternating current.
2. See Administered Connection (AC)
.
ACA
See Automatic Circuit Assurance (ACA)
.
ACD
See Automatic Call Distribution (ACD)
.
ACU
See Automatic Calling Unit (ACU)
access code
A one- to four-digit dial code used to activate or cancel a feature, or to access an outgoing trunk.
access endpoint
Either a nonsignaling channel on a DS1 interface or a nonsignaling port on an analog tie-trunk
circuit pack that is assigned a unique extension.
access tie trunk
A trunk that connects a main communications system with a tandem communications system in an
electronic tandem network (ETN). An access tie trunk can also be used to connect a system or
tandem to a serving office or service node. Also called access trunk.
ACCUNET
A trademarked name for a family of digital services offered by AT&T in the United States.
AD
See Abbreviated Dialing (AD)
.
ADAP
AUDIX Data Acquisition Package
ADC
See analog-to-digital converter (ADC).
ADM
Asynchronous data module