Flexible outputs to connect to any amplifier input
Priority output to access amplifiers with switched inputs
BT approved item for connection to public networks
Optional pre-announcement chime card available
The BT5 Single Zone Dial Up Interface is a free standing, self-powered unit with full British Telecom approval.
The BT5 connects a single amplifier within the PA system to the telephone system by plugging into the extension socket where a conventional telephone would be used (the TI5 telephone jack plugs into the two-wire master socket).
The BT5 connects to the amplifier input using screened cable which must be grounded at both ends, with the correct output selectable from line to microphone level, with priority control available where required. When this extension is dialled from another handset the ringing current is detected and the BT5 will loop the line. An acknowledging tone, and with the MIM33 optional model; a chime is sent to the caller indicating that an announcement may now be made which will be conveyed over the PA system.
Once the announcement is complete and the caller's handset is replaced, the BT5 will disconnect from the PA system and release the interface extension, thus making it ready to accept another call.