Lucent Technologies 6.1 manual Bis, Bmi

MERLIN LEGENDCommunications System Release 6.1		Issue 1
System Planning 555-661-112	August 1998
Glossary
	Page GL-4
barrier code	Password used to limit access to the Remote Access
	feature of the system. In a private network, it is especially
	important that barrier codes be required for all types of
	remote access.
basic carrier	Hardware that holds and connects the processor module,
	power supply module, and up to five other 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- 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)