Remotely-activated telephone system for communication with the d

Telephonic communications – Emergency or alarm communications – Personal monitoring

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Details

379 61, 379 63, 379102, H04Q 358, H04M 346

Patent

active

052376028

ABSTRACT:
A remotely-activated telephone system for remote caller controlled communication with the disabled having a master unit connected to a telephone line and at least one satellite unit. The disclosed system provides channel means for bi-directional coupling of acoustic signals between the satellite unit and the telephone line through the master unit and control means responsive to a control signal received from a remote caller by way of the telephone line. The disclosed control means allow a remote caller to select a satellite unit and to establish two-way speech communications without intervention by the disabled party.

REFERENCES:
patent: 4601064 (1986-07-01), Shipley
patent: 4682351 (1987-07-01), Makino
patent: 4775996 (1988-10-01), Emerson et al.
patent: 4802200 (1989-01-01), Murata et al.
patent: 4882746 (1989-11-01), Shimada
patent: 4937854 (1990-06-01), Sarakas

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