Instruction manual

Glossary
forced idle
Condition of the system during certain programming or
maintenance procedures; system prevents initiation of new
calls.
foreign exchange
See
FX .
frequency
generator
See
ring generator .
FRL
(Facility Restriction Level) ARS calling restriction type that
restricts outgoing calls to certain specified routes.
FX
(Foreign exchange) Central office ( CO ) other than the one
that is providing local access to the public telephone
network.
G
General Purpose
Adapter
See
GPA .
glare
Condition that occurs when a user tries to call out on a
loop-start trunk at the same time that another call arrives
on the same trunk.
GPA
(General Purpose Adapter) Device that connects an
analog multiline telephone to optional equipment such as
an answering machine or a fax machine.
ground-start trunk
Trunk on which the communications system, after verifying
that the trunk is idle (no ground on tip lead), transmits a
request for service (puts ground on ring lead) to the
telephone company central office (
CO ).
group
videoconferencing
system
A system application that allows face-to-face,
simultaneous video and voice communications between
groupss and requires high-speed
ISDN data transmission
facilities. See also
desktop videoconferencing system.
H
Hands Free Answer
on Intercom
See
HFAI .
hands-free unit
See HFU .
headset
Lightweight earpiece and microphone used for hands-free
telephone operation.
GL–10 System Manager's Guide