Cordless telephone system

Details Cordless telephone system Cordless telephone system

1988-08-10

1990-11-27

Ng, Jin F.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 63, H04M 1100

Patent

active

049742515

ABSTRACT:
A cordless telephone system comprises a radio telephone set and a connection unit connected to a wire telephone circuit and also connected to the radio telephone set through a radio communication circuit, for interconnection control between the wire telephone circuit and the radio telephone set. When the wire telephone circuit is put in an unusable state or a signal on the radio communication circuit is put in an unreceivable state, the connection unit transmits a disconnecting signal to the wireless telephone set to forcibly cut off the radio communication circuit.

REFERENCES:
patent: 4180708 (1979-12-01), Yamaguchi et al.
patent: 4415770 (1983-11-01), Kai et al.
patent: 4575582 (1986-03-01), Makino
patent: 4640987 (1987-02-01), Tsukada et al.
patent: 4726052 (1988-02-01), Kato et al.

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