AT&T MERLIN LEGEND Release 3.0 System Programming And Maintenance Manual page 95

Glossary
Behind Switch mode
.
binary code
bipolar 8 zero
substitution
BIS
bit
bit rate
blocking
BMI
board
board assignment
One of three modes of system operation, in
which the control unit is connected to (behind)
another telephone switching system, such as
Centrex or Definity, which provides features
and services to telephone users. See also
Hybrid/PBX mode and Key mode.
Electrical representation of quantities or
symbols expressed in the base-2 number
system, which includes zeros and ones.
See 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 communication system.
SPM procedure for assigning line/trunk and
extension modules to slots on the control unit.
System Programming and Maintenance (SPM) GL-5