Glossary-5
busyout
A configuration option in the voice module that is used to place the voice port
into the
busy
state, effectively disabling the port.
byte
A collection of bits operated upon as a unit. Most bytes in data
communications are 8 bits long and most character sets use one byte per
character. The capacity of storage devices (such as RAM) is frequently given
in bytes or in Kbytes (K=1024).
carrier
A continuous signal that is modulated with a second, informationcarrying
signal.
carrier frequency
The frequency of the signal (carrier), which is being modulated, to transmit
data.
CCITT, Consultative Committee for International Telegraph and Telephone
See
International Telecommunication Union - Telecommunication Standards
Section.
CCM
See
Communications Control Module.
CD, carrier detect
A control signal that indicates that the local modem is receiving a signal from
the remote modem.
CEM
See
channel expansion module.
central office, CO
The building where common carriers terminate customer circuits and where
the switching equipment that interconnects those circuits is located.
channel
A path for electrical transmission between two or more points. Also called
circuit, line, data link, or path. It may be asynchronous, synchronous, or
voice.
