Alcatel-Lucent 1665 Installation Manual page 391

Glossary
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Broadband
Any communications channel with greater bandwidth than a voice channel; sometimes used
synonomously with wideband. Also refers to signals at the DS3 (44.736 Mb/s) and higher.
Wideband refers to lower rates (i.e. DS1, VT1.5, etc.).
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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.
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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.
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Alcatel-Lucent 1665 DMX R9.0
365-372-304R9.0 Issue 2
July 2010
Terms and definitions
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