Alcatel-Lucent 1643 AMS Installation Manual page 268

Glossary
Circuit
A combination of two transmission channels that permits bidirectional transmission of
signals between two points to support a single communication.
CIT
Craft Interface Terminal
Client
Computer in a computer network that generally offers a user interface to a server. See
also Server.
CO
Central Office
CP
Circuit Pack
Craft Interface Terminal (CIT)
Local manager for SDH network elements.
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D Data Communication Channel (DCC)
The embedded overhead communication channel in the SDH line. The DCC is used for
end-to-end communication and maintenance. It carries alarm, control, and status
information between network elements in an SDH network.
DC
Direct Current
DCN
Data Communications Network
DDF
Digital Distribution Frame
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E Element Management System (EMS)
See Integrated Transport Management Subnetwork Controller.
EMC
ElectroMagnetic Compatibility
EMI
ElectroMagnetic Interference
EOW
Engineering Order Wire
ESD
ElectroStatic Discharge
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Issue 4, June 2007