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MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Glossary
Page GL-22
Q
R
private network
trunks
The facilities that connect
communications systems
in a
private network
. See also
tandem tie trunks
and
tandem
PRI trunks
.
processor module Module in the second slot of the control unit
(Slot 0, to the
right of the
power supply module
). Includes the software
and memory that runs the system.
programming port
reassignment
Reassignment of the system programming jack position to
any of the first five extension jacks on the first MLX module
in the control unit.
protocol Set of conventions governing the format and timing of
message exchanges between devices, such as an MLX
telephone and the control unit.
PSTN Network that is commonly accessible for local or long-
distance calling. Also called “public network” or “public
switched network.”
PSTN trunk In a
private network
, a facility that connects a networked
system to the public switched telephone network.
public switched
telephone network
See
PSTN.
QCC (Queued Call Console) MLX-20L telephone used by a
system operator in
Hybrid/PBX mode
only. Used to answer
outside calls (directed to a system operator position) and
inside calls, direct inside and outside calls to an extension
or an outside telephone number, serve as a message
center, make outside calls for users with outward calling
restrictions, set up conference calls, and monitor system
operation.
RAM (random-access memory) Computer memory in which an
individual
byte
or range of bytes can be addressed and
read or changed without affecting other parts of memory.
read-only memory See
ROM
.
Remote Access System feature that allows an outside caller to gain access
to the system, almost as if at a system extension. In a
private network
, remote access settings are used to control
calls routed via
ARS
or
UDP
routing across the network.
restore Procedure whereby saved and archived system
programming is reinstated on the system, from a floppy
disk or
memory card
. See also
backup
.