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DEFINITY Enterprise Communications Server Release 6
Installation and Test for Multi-Carrier Cabinets
555-230-112
Issue 5
May 1998
Glossary and Abbreviations
Page GL-4
ALBO
Automatic Line Build Out
All trunks busy (ATB)
The state in which no trunks are available for call handling.
ALM-ACK
Alarm acknowledge
American Standard Code for Information Interchange
See ASCII (American Standard Code for Information Interchange)
.
AMW
Automatic Message Waiting
AN
Analog
analog
The representation of information by continuously variable physical quantities such as amplitude,
frequency, and phase. See also digital
.
analog data
Data that is transmitted over a digital facility in analog (PCM) form. The data must pass through a
modem either at both ends or at a modem pool at the distant end.
analog telephone
A telephone that receives acoustic voice signals and sends analog electrical signals along the
telephone line. Analog telephones are usually served by a single wire pair (tip and ring). The
model-2500 telephone set is a typical example of an analog telephone.
analog-to-digital converter (ADC)
A device that converts an analog signal to digital form. See also digital-to-analog converter (DAC)
.
angel
A microprocessor located on each port card in a processor port network (PPN). The angel uses
the control-channel message set (CCMS) to manage communications between the port card and
the archangel on the controlling switch-processing element (SPE). The angel also monitors the
status of other microprocessors on a port card and maintains error counters and thresholds.
ANI
See Automatic Number Identification (ANI)
.
ANSI
American National Standards Institute. A United States professional/technical association
supporting a variety of standards.
answerback code
A number used to respond to a page from a code-calling or loudspeaker-paging system, or to
retrieve a parked call.
AOL
Attendant-offered load
AP
Applications processor
APLT
Advanced Private-Line Termination