Nortel Networks 10292FA, 10396EA manual Glossary

56Glossary

CD-ROM

compact disc read-only memory

A compact disc with pre-recorded data, normally used in large database-type applications such as directory, reference, or data retrieval.

channel

A communications path or the signal sent over that path. By multiplexing several channels, voice channels can be transmitted over one optical channel.

CO

central office

A major equipment center designed to serve the communication traffic of a specific geographical area.

configuration

The relative arrangements, options, or connection pattern of a system and its subcomponent parts and objects.

configure

The process of defining an appropriate set of collaborating hardware and software objects to solve a particular problem.

CWDM

coarse wavelength division multiplexing

A technology that allows two or four optical signals with different wavelengths to be simultaneously transmitted in the same direction over one fiber, and then separated by wavelength at the distant end.

dB

decibel

A unit of measure indicating relative optic power on a logarithmic scale. Often expressed to a fixed value, such as dBm (1 milliwatt) or dBµ

(1 microwatt).

dBm

decibels above one milliwatt

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