AT&T MERLIN LEGEND Installation & Maintenance Manual page 690

Glossary
C
Call Accounting System (CAS)
A vendor-supplied DOS or
UNIX-based application that
monitors and manages
telecommunications costs.
Call Accounting Terminal
(CAT)
A vendor-supplied stand-
alone unit with a built-in
microprocessor and data
buffer that provides simple
call accounting at a low cost.
Callback queue
The queue used to hold
Callback callers who have
requested a busy pool or
extension.
calling group
A team of agents who answer
the same types of calls.
Call Management System
(CMS)
A DOS-based application
simulates the actions of a
system operator by
answering and distributing
calls. CMS also produces
management reports for call
analysis.
campus cable
Cable that runs between
buildings connected to the
same communications
system.
central office (CO)
The location of telephone
switching equipment that
provides local telephone
service and access to toll
facilities for long-distance
calling.
central processor
The part of a computer that
interprets and executes
instructions. Also called
central processing unit.
Centrex
A set of communications
system features a user can
subscribe to on telephone
lines from the local telephone
company.
channel
A telecommunications
transmission path for voice
and/or data.
channel service unit (CSU)
Equipment used at a
customer's premises to
provide DS1 facility
terminations and signaling
that
compatibility.
checksum
The sum of ones in a
sequence of ones and zeros;
used to detect or correct
errors in data transmission.
Glossary GL-5