66-031
Installation
Area
Paging
Interface
Station PA Port
A station port can be configured by class of service
programming to be a PA port. As a PA port, it can be
used to couple a station voice path to an external device
(see Chapter 3 for programming details).
The audio input of an external paging amplifier can
be connected to the audio pair of the station port as
illustrated in Figure 2-3.
The audio input connection must be isolated with a
600 ohm to 600 ohm audio matching transformer.
Terminate the audio input of the paging amplifier
with a 620 ohm (nominal value) resistor.
If station port 23 is programmed as a PA port, the
Common Audible contact points are automatically
reconfigured as PA enable terminals. The contact
closure now occurs when PA station 23 is dialed.
The normal common audible function, as discussed
previously, is disabled as long as station 23 is a PA
station.
If station port 25 is programmed as a PA port, the
Auxiliary Station Interface (station 17 audible) con-
tact points are automatically reconfigured as PA
enable terminals. The contact closure now occurs
when PA station 25 is dialed. The normal auxiliary
station interface function, as discussed previously,
is disabled as long as station 25 is a PA station.
Area Paging Interface Llne Port
A fine port can be configured by COS programming to
be an AUXILIARY port. As an AUXILIARY port, it can
be used to couple a station voice path to an external
device. This is done from any station with that tine ap-
pearance by pressing the proper line key to select the
AUXILIARY port.
tones or dial pulses can be
dialed through the AUXILIARY port as needed.
l
The audio input of an external paging amplifier can
be connected to the tip and ring leads of the line
l
The audio input connection must be isolated with a
600 ohm to 600 ohm audio matching transformer.
Terminate the audio input of the paging amplifier
with a 620 ohm (nominal value) resistor.
A DTMF tone select, zone-paging amplifier can be
employed if desired. If used, the zone-select code must
be dialed after the AUXILIARY port line select key is
pressed.
On Hold
If music on hold is to be part of the system, connect a
KX registered music source to the KSU input jack
(phono jack) provided for this purpose. The impedance
of this input is approximately 500 ohms. Level adjust-
ment of the music source may be necessary. This may
be done during system checkout.
2-5