What does the two-way voice base unit do?
When a subscriber has a two-way voice unit installed, it essentially does the same as the dialer unit with one exception. When the subscriber presses the pendant, the monitoring center can speak to the subscriber through the speaker and microphone, even if the subscriber cannot reach the phone. Then a determination can be made as to which kind of help to dispatch. There is an active range of the speaker and microphone (typically 20 – 30 feet in the line of sight) and outside that range the communication cannot be established.
