Instruction manual

Glossary
protocol
Set of conventions governing the format and timing
of message exchanges between devices, such as
an MLX telephone and the control unit.
public network
Network that is commonly accessible for local or
long-distance calling. Also called “public switched
telephone network” or “
public switched network.
”
Q
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.
R
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.
Remote Access
System feature that allows an outside caller to gain access
to the system, almost as if at a system extension.
restore
Procedure whereby saved and archived system
programming is reinstated on the system, from a floppy
disk or
memory card . See also backup .
ring generator
Circuit pack added to the power supply that generates a
high-voltage, 20–30 Hz signal to ring a telephone.
RS-232
Physical interface, specified by the Electronics Industries
Association (EIA), that transmits and receives
asynchronous data at distances of up to 50 feet (15 m).
ROM
(read-only memory) Computer memory that can be read
but cannot be changed.
GL–18 System Manager's Guide