Braille Unit; Exchange Name Announcers; Recorder; Buzzer - Philips SOPHO SuperVisor 25 Engineer's Manual

In the interface only one B-channel is used. The D-channel is used for signalling information.
The consoles require 2,5 Watt power from the S bus. This means that no power is left to
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connect other terminals to the S bus. The other B-channel is therefore not available to
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support other terminals on the S bus.
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The recorder output comprises an audio output (same audio as on the handset) and a control
signal to switch on the recorder if a call is handled.

1.3.2. Braille Unit

Model 35 has an interface to connect a braille unit. A braille unit is defined for this purpose.
The braille unit must be connected to the V.24 interface. This means that if the braille unit is
connected, the interface cannot be used for other purposes. Some pins of the V.24 interface
on model 35 are also used for signalling purposes (e.g. signalling to an announcer). Therefore
a special cable is available which is equipped with at one side a male 25p D-connector and at
the other side a female 25p D-connector + a female 9p D-connector. (The female 9p D-
connector is compatible with the 9p D-connector on the SV30.)

1.3.3. Exchange Name Announcers

An exchange name announcer can be connected to the system via the audio input connectors
at the back. With two control (address) outputs up to four name announcers can be selected
for an incoming call. One trigger signal is present to start the announcer/announcement.

1.3.4. Recorder

A voice recorder can be connected to the Supervisor for voice registration of incoming calls.
A control signal is available to switch the recorder on or off.

1.3.5. Buzzer

The buzzer output is a relay contact which is closed when the buzzer is activated. This allows
the connection of an external buzzer.
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