Avaya Communication Manager Administrator's Manual page 1788

Glossary and Abbreviations
C
CCSA
Common-Control Switching Arrangement
CDM
Channel-division multiplexing
CDOS
Customer-dialed and operator serviced
CDPD
Customer database-provided digits
CDR
See Call Detail Recording
CDRP
Call Detail Record Poller
CDRR
Call Detail Recording and Reporting
CDRU
See Call Detail Recording utility
CED
Caller entered digits
CEM
Channel-expansion multiplexing
center-stage switch (CSS)
The central interface between the processor port network and expansion port networks in a
CSS-connected system.
central office (CO)
The location housing telephone switching equipment that provides local telephone service and access
to toll facilities for long-distance calling.
central office (CO) codes
The first three digits of a 7-digit public-network telephone number in the United States.
central office (CO) trunk
A telecommunications channel that provides access from the system to the public network through
the local CO.
CEPT1
European Conference of Postal and Telecommunications Rate 1
CESID
Caller's Emergency Service Identification
channel
1. A circuit-switched call.
2. A communications path for transmitting voice and data.
3. In wideband, all of the time slots (contiguous or noncontiguous) necessary to support a call.
Example: an H0-channel uses six 64-kbps time slots.
4. A DS0 on a T1 or E1 facility not specifically associated with a logical circuit-switched call;
analogous to a single trunk.
1788
(CDR).
(CDRU).
Administrator's Guide for Avaya Communication Manager
November 2003