AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 265

Glossary
B8ZS
B-channel
barrier code
basic carrier
Basic Rate
interface
baud rate
bearer channel
Behind Switch
mode
binary code
bipolar 8 zero
substitution
bipolar signal
bipolar violation
BIS
bit
bit rate
bits per second
(Bipolar 8 zero substitution) A line-coding format that
encodes a string of 8 zeros in a unique binary sequence
using bipolar violation. See also bipolar signal and bipolar
violation.
A 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 with other digital
information streams. Also called bearer channel.
A password used to limit access to the Remote Access
feature of the communications system.
A piece of hardware that holds and connects the processor
module, power supply module, and up to five line/trunk or
station modules in the communications system. See also
expansion carrier.
See BRI.
A unit of transmission speed equal to the number of signal
events per second. See also bit rate and bits per second,
See B-channel.
A mode of operation in which the communications system
control unit is connected to (is "behind") another
communications system.
An electrical representation of quantities or symbols
expressed in the base-2 number system.
See B8ZS.
A digital signal in which pulses (1's) alternate between
positive and negative. See also AMI, B8ZS, and bipolar
violation.
A condition that occurs when two positive or two negative
pulses are received in succession. See also AMI, B8ZS,
and bipolar signal.
Built-in speakerphone
(Binary digit) One unit of information in binary notation,
having two possible values: zero or one.
The speed at which bits are transmitted, usually expressed
in bits per second. Also called data rate. See also baud
rate and bits per second.
(bps) The number of binary units of information that are
transmitted or received per second. See also baud rate and
bit rate.
Glossary GL-3