DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115 Issue 1
April 2000
Glossary and Abbreviations
GL-5
appearance
A software process that is associated with an extension and whose purpose is to supervise a call.
An extension can have multiple appearances. Also called call app earance, line appearance, and
occurrence. See also call appearance.
application
An adjunct that requests and receives ASAI services or capabilities. One or more applications can
reside on a single adjunct. However, the switch cannot distinguish among several applic ations
residing on the same adjunct and treats the adjunct, and all resident applic ations, as a single
application. The terms application and adjunct are used interc hangeably throughout this
document.
applications processor
A micro-computer based, program c ontrolled computer providing applic ation services for the
DEFINITY switch. The processor is used with several user-controlled applications such as traffic
analysis and electronic documentation.
application service element
See capability group.
architecture
The organizational structure of a system, including hardware and software.
ARS
See Automatic Route Selection (ARS).
ASAI
See Adjunc t-Switch Application In terface (ASAI)
ASCII (American Standard Code for Information Interchange)
The standard code for representing characters in dig ital form. Each character is represented by an
8-bit code (including p arity bit).
association
A communication channel between adjunct and switch for messaging purposes. An active
association is one that applies to an existing call on the switch or to an extension on the call.
asynchronous data transmission
A method of transmitting data in which each character is preced ed by a start bit and followed by a
stop bit, thus permitting data charac ters to be transmitted at irregular intervals. This type
transmission is advantageous when transmission is not regular (characters typed at a keyboard).
Also called asynchronous transmission. See also synchronous data transmission.
asynchronous data unit (ADU)
A device that allows direct connection between RS-232C equipment and a digital switch.
asynchronous Transfer Mode (ATM)
A packet-like switching technology in which data is transmitted in fixed -size (53-byte) cells. ATM
provides high-speed access for d ata communication in LAN, campus, and WAN environments.
ATB
See All trunks busy (ATB).
ATD
See Attention dial (ATD).
attendant
A person at a console who provides personalized service for incoming callers and voice-services
users by performing switching and signaling op erations. See also attendant console.