Lucent Technologies 6.1 manual Lan, Ldn, Led

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998
Glossary
	Page GL-17

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.
line/trunk jack	Physical interface on a module in the control unit for
	connecting an outside line/trunk to the communications
	system. Also called “trunk jack.”
line/trunk and	Module on which the jacks for connecting central office
extension module	lines/trunks and/or the jacks for connecting the extensions
	are located.
local dial plan	In a system that is part of a private network, a list of
	extension ranges that the local system refers to in order to
	route local intersystem calls via UDP.
local extension	In a system that is part of a private network, an extension
	that is listed in the system’s local dial plan.
local host	A method for connecting an extension jack to an on-site
computer access	computer for data-only calls through a modem or ISDN
	terminal adapter.