Lucent Technologies 555-661-150 manual Bis, Bmi

MERLIN LEGEND Communications System Release 6.1		Issue 1
Network Reference 555-661-150	August 1998
Glossary
	Page GL-4
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- or 56-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.
Basic Rate	See BRI.
Interface
Bearer-channel	See B-channel.
Behind Switch	One of three modes of system operation, in which the
mode	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.
binary code	Electrical representation of quantities or symbols
	expressed in the base-2 number system, which includes
	zeros and ones.
bipolar 8 zero	See B8ZS.
substitution
bipolar signal	Digital signal in which pulses (ones) alternate between
	positive and negative. See also AMI, B8ZS, and bipolar
	violation.
bipolar violation	Condition occurring when two positive or two negative
	pulses are received in succession. See also AMI and
	B8ZS.
BIS	(Built-In Speakerphone) Part of the model name of some
	analog multiline telephones.
bit	(binary digit) One unit of information in binary notation; it
	can have one of two values, zero or one.
bit rate	Speed at which bits are transmitted, usually expressed in
	bps. Also called “data rate.”
blocking	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.
BMI	(Broadcast Music Incorporated)
board	A module, for example, 100D or 408 MLX GS/LS, that
	allows you to connect lines/trunks and extensions to the
	communications system.
board assignment	System Programming and Maintenance (SPM) procedure
	for assigning line/trunk and extension modules to slots on
	the control unit.
board	System programming procedure for renumbering boards
renumbering	that have already been assigned to specific slots on the
	control unit.