SYSTEM FEATURES
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DUAL-TONE MULTI-FREQUENCY (DTNF) SIGNALLING
The GLX System is compatible with DTMF central offices.
It can-
not be used in areas served by dial pulse central offices unless
a DTMF-to-rotary converter is installed on each C.O. line.
MUSIC-ON-HOLD AND BACKGROUND MUSIC
The system can be equipped with an external music source (radio,
tape player, etc.)
for calls on hold and calls waiting. This
feature not only makes the wait as pleasant as possible, but it
assures the waiting party that the call is still connected.
There are two music-on-hold channels for outside calls on hold.
When both channels are in use, a third outside call on hold will
not receive music. A channel is considered in use as long as the
call is in progress, even after the call is no longer on hold.
This ensures that an outside caller who has received music will
hear music if the call is placed on hold again.
Camped-on intercom calls will always receive music if the music
source is installed. Music can also be heard through the key-
sets' speakers, using the background music feature code (or BGM
key on the Executive Keyset).
Background music is interrupted
when the keyset is in use.
To turn music on or off (Standard Keyset): While on hook, dial
#06.
To turn music on or off (Executive Keyset):
While on hook, press
the BGM key. The BGM key lights when music is on.
CALL
PRIVACY
This feature ensures the privacy of calls in progress by prevent-
ing keyset users from accessing intercom channels or C.O. lines
already in use. Users attempting to access a busy intercom chan-
nel or C.O. line hear a busy signal. A keyset user may access
and gain control of an outside call if it is ringing in, has been
placed on system hold, or if it is recalling from system hold or
individual hold.
C.O. LINE RESTRICTION
As a means of restricting outgoing calls, keysets can be pro-
grammed to prevent access to one or more C.O. lines for placing
calls. Users attempting to place a call using a restricted C.O.
line hear a busy signal; however, they can answer incoming calls,
calls on system hold, or recalls on the restricted C.O. line.
GLX Owner's Guide (Issue 1, 11/85) Page 7
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