Incoming call alert system for cellular telephones without...

Details Incoming call alert system for cellular telephones without... Incoming call alert system for cellular telephones without...

H - Electricity

04

B

H04B 1/40 (2006.01) H04Q 7/32 (2006.01) H04M 19/04 (2006.01)

Patent

CA 2054012

Each of the cellular telephones is adapted to receive a paging signal and to transmit a voice channel signal on a voice channel frequency in response to the paging signal. The alert system includes a receiver tuned to receive the voice channel frequency. A trigger circuit is connected to the output of the receiver to be activated by the receiver when the receive receives a voice channel signal on the voice channel frequency. An alert is produced by either an audio signal generator, a vibratory generator or a radio mute, and each of the latter is connected to the output of the trigger. Thus, an alert is provided on receipt of an incoming telephone call.

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