AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 94

Glossary
B
B8ZS
backup
bandwidth
barrier code
basic carrier
baud rate
B-channel
Bearer-channel
GL-4 System Programming and Maintenance (SPM)
(bipolar 8 zero substitution) Line-coding format
that encodes a string of eight zeros in a unique
binary sequence to detect bipolar violation.
See also bipolar signal.
Procedure for saving a copy of system
programming onto a floppy disk or memory
card. See also restore.
Difference, expressed in hertz, between the
highest and lowest frequencies in a range that
determines channel capacity.
Password used to limit access to the Remote
Access feature of the system.
Hardware that holds and connects the
processor, power supply, and up to five
modules in the system. See also expansion
carrier.
Strictly speaking, a measurement of
transmission speed equal to the number of
signal level changes per second. In practice,
often used synonymously with bit rate and bps.
(Bearer-channel) 64-kbps channel that carries
a variety of digital information streams, such as
voice at 64 kbps, data at up to 64 kbps,
wideband voice encoded at 64 kbps, and
voice at less than 64 kbps, alone or combined.
See B-channel.