66-047
Installation
Area Paging Interface Station PA Port
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Any unused station port can be programmed to be a PA port instead Of a
telephone station port (see Chapter 3 for programming details).
audio input of an external paging amplifier can be connected to
the audio pair of the station port as illustrated in Figure 2-3.
l
The audio input connection must be isolated with a 600 ohm to 600
ohm audio matching transformer.
Terminate the audio input of the
PA system with a 620 ohm (nominal value) resistor.
l
If station port 39 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 39 is
dialed.
The normal common audible function, as discussed
previously,
is disabled as long as station 39 is a PA station.
If station port 41 is programmed as a PA port, the Auxiliary
Station Interface (station port 17 audible) contact points are
automatically reconfigured as PA enable terminals.
The contact
closure now occurs when PA station port 41 is dialed.
The normal
auxiliary station interface function,
as discussed previously, is
disabled as long as station port 41 is a PA station.
Area Paging Interface
Line Port
A line port can be configured by class of service 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
allowed station by pressing the proper line key to select the
AUXILIARY port.
DTMF tones or dial pulses can be dialed through the
auxiliary port as needed.
If direct access area paging is to be part of the system, connect the
audio input of a paging amplifier to the line that is programmed to be
an AUXILIARY port.
The input impedance of this port is approximately
ohms.
A 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.
2-7
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