Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Glossary
Page GL-5
B
B8ZS (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 bipo-
lar signal.
backup Procedure for saving a copy of system programming
onto a floppy disk or
memory card . See also restore .
bandwidth Difference, expressed in hertz, between the highest
and lowest frequencies in a range that determines
channel capacity.
barrier code Password used to limit access to the Remote
Access feature of the system.
basic carrier Hardware that holds and connects the processor,
power supply, and up to five modules in the system.
See also expansion carrier.
baud rate 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.
B-channel (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
.
Bearer-channel See B-channel.