Lucent-technologies PortMaster Manuel d'utilisateur Page 318

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Glossary
Glossary-8 PortMaster Configuration Guide
confederation member autonomous system
See CMAS.
console port
A serial port on a PortMaster attached to a terminal or PC through which you enter
commands to communicate with ComOS.
CRC error
Cyclic redundancy check error. These errors can indicate problems with source station
hardware, receivers, retiming modules and/or repeaters, bridges, cabling, or transceivers.
CSU
Channel service unit. An ancillary device needed to adapt the V.35 or X.21 interface to a
port on a telephone carrier switch. The CSU is placed between the data terminal
equipment (DTE) and the switch.
cyclic redundancy check
See CRC error.
D
data communications equipment
See DCE.
data link connection identifier
See DLCI.
data service unit
See DSU.
Data Set Ready
See DSR.
data terminal equipment
See DTE.
Data Terminal Ready
See DTR.
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