MERLIN LEGEND Communications System Release 6.1
System Programming Guide
555-661-111
Issue 1
August 1998
Glossary
Page GL-16
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IS II/III (Integrated Solution II or Integrated Solution III) Set of UNIX
System-based applications that augments and provides
additional services using the system. IS II and III are no
longer available.
ISDN (Integrated Services Digital Network) Public or private
network that provides end-to-end digital connectivity for all
services to which users have access by a limited set of
standard multipurpose user and
network
interfaces
;
provides digital circuit-switched or packet-switched
connections within the network and to other networks for
national and international digital connectivity.
ISDN 7500B Data
Module
Data communications device that allows connection
between an RS-232
DTE
device and the control unit by
MLX extension jacks on the 008 MLX or 408 GS/LS-MLX
module.
ISDN terminal
adapter
(Integrated Services Digital Network terminal adapter) A
device that connects the communications system with
data
terminal equipment (DTE)
.
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)
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