AT&T MERLIN LEGEND Release 3.1 System Planning Manual page 352

Glossary
binary code
bipolar 8 zero
substitution
bipolar signal
bipolar violation
BIS
bit
bit rate
blocking
BMI
board
board assignment
board renumbering
BRI
broadband
BTMI
GL–4
System Planning
Electrical representation of quantities or symbols
expressed in the base-2 number system, which includes
zeros and ones.
See B8ZS .
Digital signal in which pulses (ones) alternate between
positive and negative. See also AMI , B8ZS , and bipolar
violation .
Condition occurring when two positive or two negative
pulses are received in succession. See also AMI and
B8ZS .
(Built-In Speakerphone) Part of the model name of some
analog multiline telephones.
(binary digit) One unit of information in binary notation; it
can have one of two values, zero or one.
Speed at which bits are transmitted, usually expressed in
bps . Also called "data rate." See also baud rate.
Condition in which end-to-end connections cannot be
made on calls because of a full load on all possible
services and facilities. See also glare.
(Broadcast Music Incorporated)
A module , for example, 100D or 408 MLX GS/LS, that
allows you to connect lines/trunks and extensions to the
communications system.
SPM procedure for assigning line/trunk and extension
modules to slots on the control unit .
System programming procedure for renumbering line/trunk
and extension modules that have already been assigned
to specific slots on the control unit .
(Basic Rate Interface) Standard digital framing format that
specifies the protocol between the communication system
and a terminal. BRI runs at 19.2-kbps and provides two
64-kbps voice or B-channels and on 16-kbps signaling or
D-channel per port. The remaining 48-kbps are used for
framing and D-channel contention.
Transmission path having a bandwidth greater than a
voice-grade channel.
(basic telephone modem interface)