Avaya Communication Manager Administrator's Manual page 1789

channel negotiation
The process by which the channel offered in the Channel Identification Information Element (CIIE)
in the SETUP message is negotiated to be another channel acceptable to the switch that receives the
SETUP message and ultimately to the switch that sent the SETUP. Negotiation is attempted only if
the CIIE is encoded as Preferred. Channel negotiation is not attempted for wideband calls.
CI
Clock input
circuit
1. An arrangement of electrical elements through which electric current flows.
2. A channel or transmission path between two or more points.
circuit pack
A card on which electrical circuits are printed, and IC chips and electrical components are installed. A
circuit pack is installed in a switch carrier.
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)
A feature that uses a number to specify if voice-terminal users can activate the Automatic Callback,
Call Forwarding All Calls, Data Privacy, or Priority Calling features. See also
(COR).
CLI
command-line interface
cm
Centimeter
CM
Connection Manager
CMC
Compact Modular Cabinet
CMDR
Centralized Message Detail Recording
CMS
Call Management System
CO
See central office
common-control switching arrangement (CCSA)
A private telecommunications network using dedicated trunks and a shared switching center for
interconnecting company locations.
Administrator's Guide for Avaya Communication Manager
November 2003
(CO).
Glossary and Abbreviations
Class of Service (COS).
Class of Restriction
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C