Tadiran Telecom Coral IPx 500, Installation Manual, Page: 500 / 544

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Coral IPx 500 Installation Manual
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The External Paging (P1) Interface is electrically identical to the Music interfaces.
Audio signals from the system are passed through the audio coupling transformer to
the interface. A direct current (DC) blocking capacitor protects the secondary winding
of the audio coupling transformer from conducting DC energy. As a music input the
circuit operates as an input only, and so it can be used to play but not record music.
The relay provides form A (single pole, single throw and normally open) contacts for
activating external circuitry and devices. Contacts RLY1 are designated to operate in
conjunction with audio interface P1 for external paging applications. Care must be
taken not to exceed the contact ratings listed in the specifications.