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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Glossary
Page GL-16
J
K
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ISDN terminal
adapter data
station
A type of data station that includes an ISDN terminal
adapter as its DCE. It may also include an MLX telephone
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.
jack Physical connection point to the system for a telephone,
line/trunk, or other device. Also called “port.”
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.
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
Assignment of lines and trunks connected to the system
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
.