| 摘要 |
For use with a conventional telephone system, automatic dialing equipment which includes a master or central station and a remote, automatically triggered, dialing station. The remote station is triggered by an alarm device of no particular interest to the present invention such as one to indicate an intruder or a fire. The remote station, once triggered, electronically dials by forming the necessary make and break signals for the conventional telephone equipment found at the telephone exchange and the message is transferred through the exchange to the master station. The master station is adapted to respond to calls from several remote stations. The master station interrogates the remote station through coded tone pulses and receives a response indicating the identity of the remote station, the nature of the alarm, and other pertinent information which enables it to respond to the inquiry from the remote station and from a signal or output dictated by the nature of the interrogation.
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