ADTRAN Express 3000 SP, Руководство пользователя

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61203153L3-20 Express 3000 SP User Manual F-1
Appendix F
Glossary
AT commands
A set of commands that allows a computer to take control of a mo-
dem and to retrieve information from a modem. AT stands for at-
tention and precedes each command.
Bandwidth Allocation Control Protocol (BACP)
In ISDN, a protocol that controls the addition and removal of
channels from a multichannel link.
bit error rate test (BERT)
A diagnostic tool used to test data integrity by transmitting a
known pattern of bits and then evaluating the subsequent bit error
rate.
Bandwidth on Demand Industry User Group Protocol (BONDING)
A set of protocols that improves interoperability among multi-
plexers from various vendors. BONDING describes a number of
interoperability modes for switched networks so that a sideband
signal can be subdivided into multiple 56 kbps or 64 kbps chan-
nels and then recombined at the receiving end.
carrier detect (CD)
A signal generated by a modem which operates over phone lines
to indicate whether the phone carrier is present and the line can be
dialed.
Customer Premises Equipment (CPE)
Communication equipment residing on the end-user's side of the
network interface boundary. In the U.S., end-user equipment that
may not be owned by the local exchange. Examples include tele-
phones and modems.