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Glossary and Abbreviations
555-230-024GL-6 Issue 5 January 1998
ATM
See asynchronous Transfer Mode (ATM).
attendant console
The workstation used by an attendant. The attendant console allows the attendant to originate a
call, answer an incoming call, transfer a call to another extension or trunk, put a call on hold, and
remove a call from hold. Attendants using the console can also manage and monitor some
system operations. Also called console. See also attendant.
Attention dial (ATD)
A command in the Hayes modem command set for asynchronous modems.
Audio Information Exchange (AUDIX)
A fully integrated voice-mail system. Can be used with a variety of communications systems to
provide call-history data, such as subscriber identification and reason for redirection.
AUDIX
See Audio Information Exchange (AUDIX).
auto-in trunk group
Trunk group for which the CO processes all of the digits for an incoming call. When a CO seizes a
trunk from an auto-in trunk group, the switch automatically connects the trunk to the destination —
typically an ACD split where, if no agents are available, the call goes into a queue in which callers
are answered in the order in which they arrive.
Auto-In Work mode
One of four agent work modes: the mode in which an agent is ready to process another call as
soon as the current call is completed.
Automatic Alternate Routing (AAR)
A feature that routes calls to other than the first-choice route when facilities are unavailable.***
Automatic Callback (ACB)
A feature that enables internal callers, upon reaching a busy extension, to have the system
automatically connect and ring both parties when the called party becomes available.
Automatic Call Distribution (ACD)
A feature that answers calls, and then, depending on administered instructions, delivers
messages appropriate for the caller and routes the call to an agent when one becomes available.
Automatic Call Distribution (ACD) split
A method of routing calls of a similar type among agents in a call center. Also, a group of
extensions that are staffed by agents trained to handle a certain type of incoming call.
Automatic calling unit (ACU)
A device that places a telephone call.
Automatic Circuit Assurance (ACA)
A feature that tracks calls of unusual duration to facilitate troubleshooting. A high number of very
short calls or a low number of very long calls may signify a faulty trunk.
Automatic Number Identification (ANI)
Representation of the calling number, for display or for further use to access information about the
caller. Available with Signaling System 7.
automatic restoration
A service that restores disrupted connections between access endpoints (nonsignaling trunks)
and data endpoints (devices that connect the switch to data terminal and/or communications