Telephonic communications – Emergency or alarm communications – Personal monitoring
Patent
1985-08-13
1988-05-24
Dwyer, James L.
Telephonic communications
Emergency or alarm communications
Personal monitoring
379 49, 379106, H04M 126
Patent
active
047471204
ABSTRACT:
A monitoring system for indicating the presence of a person at a remote location through a telephone line includes circuitry at a central location for automatically establishing a telephone link between the central and remote locations. A decoder at the remote location produces a verification signal in response to an action performed by the person whose presence is to be indicated. The decoder transmits the verification signal through the telephone line to the central location to indicate the presence of the person at the remote location.
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Dwyer James L.
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