Nortel 10292FA, Installation Manuallines

Page: 56 / 70

56 Glossary
212257-B
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