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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Glossary and abbreviations
1624
CISPR
International Special Committee on Radio Interference
Class of Restriction (COR)
A feature that allows up to 96 classes of call-origination and call-termination restrictions for voice terminals,
voice-terminal groups, data modules, and trunk groups. See also Class of Service (COS)
.
Class of Service (COS)
A feature that uses a number to specify if voice-terminal users can activate the Automatic Callback, Call For-
warding All Calls, Data Privacy, or Priority Calling features. See also Class of Restriction (COR).
cm
Centimeter
CM
Connection Manager
CMC
Compact Modular Cabinet
CMDR
Centralized Message Detail Recording
CMS
Call Management System
CO
See central office (CO).
common-control switching arrangement (CCSA)
A private telecommunications network using dedicated trunks and a shared switching center for interconnect-
ing company locations.
communications system
The software-controlled processor complex that interprets dialing pulses, tones, and keyboard characters and
makes the proper connections both within the system and external to the system. The communications system
itself consists of a digital computer, software, storage device, and carriers with special hardware to perform
the connections. A communications system provides voice and data communications services, including
access to public and private networks, for telephones and data terminals on a customer’s premises. See also
switch
.
confirmation tone
A tone confirming that feature activation, deactivation, or cancellation has been accepted.
connectivity
The connection of disparate devices within a single system.
console
See attendant console
.
contiguous
Adjacent DS0s within one T1 or E1 facility or adjacent TDM or fiber time slots. The first and last TDM bus,
DS0, or fiber time slots are not considered contiguous (no wraparound). For an E1 facility with a D-channel,
DS0s 15 and 17 are considered contiguous.
control cabinet
See control carrier.