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Glossary
Terms and Definitions
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G L - 1 9
Lucent Technologies - Proprietary
See notice on first page
365-372-327 R2.0
Issue 1, October 2003
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C
CC - Clear Channel
A provisionable mode for the DS3 output that causes parity violations not to
be monitored or corrected before the DS3 signal is encoded.
CCITT - International Telephone and Telegraph Consultative Committee
An international advisory committee under United Nations’ sponsorship that
has composed and recommended for adoption worldwide standards for
international communications. Recently changed to the International
Telecommunications Union Telecommunications Standards Sector (ITU-
TSS).
Channel
A logical signal within a port. For example, for an EC-1 port, there is one STS-
1 channel and sometimes 28 VT1.5 channels. See Port.
Channel State Provisioning
A feature that allows a user to suppress reporting of alarms and events during
provisioning by supporting multiple states (automatic, in-service and not
monitored) for VT1.5 and STS-1 channels. See Port State Provisioning.
CV - Coding Violation
A performance monitoring parameter.
CVFE - Coding Violation Far-End
An indication returned to the transmitting terminal that an errored block has
been detected at the receiving terminal.
D
DACS III-2000
Digital Access and Cross-Connect System that provides clear channel
switching at either the DS3 or the STS-1 rates, eliminating the need for manual
DSXs.
DACS IV-2000
Digital Access and Cross-Connect System that provides electronic DS3/STS-
1 or DS1/VT1.5 cross-connect capability, eliminating the need for manual
DSXs.
DCC - Data Communications Channel
The embedded overhead communications channel in the SONET line. It is
used for end-to-end communications and maintenance. It carries alarm,
control, and status information between network elements in a SONET
network.