Lucent Technologies 555-661-150 manual Lan, Ldn, Led

MERLIN LEGEND Communications System Release 6.1		Issue 1
Network Reference 555-661-150		August 1998
Glossary
		Page GL-16
ISDN terminal	A type of data station that includes an ISDN terminal
adapter data	adapter as its DCE. It may also include an MLX telephone
station	for simultaneous voice and data (ISDN terminal adapter
	data-only station). These data stations connect to MLX
	extension jack modules for digital transmission of data over
	a DS1 facility.

J

jack	Physical connection point to the system for a telephone,
	line/trunk, or other device. Also called “port.”

K

kbps	(kilobits per second)
Key mode	One of three modes of system operation, in which the
	system uses personal lines on line buttons for outside calls,
	with a separate interface (ICOM buttons) for inside calling.
	See also Behind Switch mode and Hybrid/PBX mode.

L

LAN	(local area network) Arrangement of interconnected
	personal computers or terminals, sometimes accessing a
	host computer, sometimes sharing resources such as files
	and printers.
LDN	(Listed Directory Number)
LED	(light-emitting diode) Semiconductor device that produces
	light when voltage is applied; light on a telephone.
line	Connection between extensions within the
	communications system; often, however, used
	synonymously with trunk.
line and trunk	Assignment of lines and trunks connected to the system
assignment	control unit to specific buttons on each telephone.
line coding	Pattern that data assumes as it is transmitted over a
	communications channel.
line compensation	Adjustment for the amount of cable loss in decibels (dB),
	based on the length of cable between a 100D module and
	a channel service unit (CSU) or other far-end connection
	point.
line/trunk	Refers to inside system lines and outside lines/trunks in
	general terms. See also line and trunk.