GL-4
Issue 5 June 2000
363-206-208
Glossary
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.
CEV
Controlled Environment Vault
CIT
Craft Interface Terminal. The connector on the front of a shelf which is used to gain
access to the condition of the shelf and system and through which system parameters
and values can be changed
CCITT
International Telephone and Telegraph Consultative Committee — An international
advisory committee under United Nations’ sponsorship that has composed and recom-
mended for adoption worldwide standards for international communications. This func-
tion is now under the auspices of the ITU (International Telecommunications Union).
See ITU.
CLF
Carrier Line Failure Status.
CLK
Clock.
CMOS
Complementary Metal Oxide Semiconductor.
CO
Central Office.
CP
Circuit Pack
CR
Critical (alarm status)
CSA
Carrier Serving Area.
CTS
Customer Technical Support
CTS
Clear to Send in TL1/X.25 telemetry.
CV
Coding Violation (a performance-monitoring parameter).
Summary of Contents for DDM-2000 OC-12
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