FBSAR - Audio Interface Unit
From Zenitel Wiki
Features
- Provides interface to non-selective radio systems (1 base station)
- Two relays for busy marking of external equipment and transmitter keying
- Two optocouplers, which may be used for mutual busy marking
- Provides interface to PA systems (2 PA zones)
- DC termination of two subscriber outputs
- Two filters to remove carrier for display data signals on two subscriber audio outputs
- Second channel may be used as filter / PA adapter only
- Galvanic separation between the exchange and the external equipment
- +24 V supplied from the exchange via Power Distribution Board, needed only if the relays are used.