Instruction manual

MERLIN LEGEND Communications System Release 5.0
Installation
555-650-140
Issue 1
June 1997
Glossary
Page GL-23
J
ISDN (Integrated Services Digital Network) Public or pri-
vate network that provides end-to-end digital con-
nectivity 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 terminal
adapter
A type of data communications equipment that trans-
mits digital signals over digital telephone company
facilities, for example, PRI. A digital data station uses
an ISDN Terminal Adapter (such as the Express-
Route 1000 or ISDN 7500B data module) as its
DCE.
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 tele-
phone for simultaneous voice and data. 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, trunk. or other device. Also called “port.”