Alcatel-Lucent 1665 Installation Manual page 395

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.
DCE - Data Communications Equipment
In a data station, the equipment that provides the signal conversion and coding between the data terminal
equipment (DTE) and the line. The DCE may be separate equipment or an integral part of the DTE or of
intermediate equipment. A DCE may perform other functions usually performed at the network end of the
line.
DDM-2000
Lucent's first generation SONET multiplexers that multiplex DS1, DS3, or EC-1 inputs into EC-1, OC-1,
OC-3, or OC-12 outputs.
Default Provisioning
The parameter values that are preprogrammed as shipped from the factory.
Demultiplexing
A process applied to a multiplexed signal for recovering signals combined within it and for restoring the
distinct individual channels of these signals.
DEMUX - Demultiplexer
The DEMUX direction is from the fiber toward the DSX.
Digital Multiplexer
Equipment that combines time-division multiplexing several digital signals into a single composite digital
signal.
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365-372-304R7.1
Issue 1, November 2007
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