Control method for cordless telephone which displays identities

Details Control method for cordless telephone which displays identities Control method for cordless telephone which displays identities

1991-05-17

1992-10-13

Dwyer, James L.

Telephonic communications

Audio message storage, retrieval, or synthesis

379142, 379205, 379247, 379396, H04M 1100

Patent

active

051557592

ABSTRACT:
A control method for a cordless telephone system including a main apparatus connected to a telephone line and having a line control function, a plurality of stationary apparatuses connected to the main apparatus and each having a radio transmitter/receiver, and portable telephones capable of communicating with the stationary apparatuses through a radio channel. When the main apparatus receives a simultaneous calling request signal from one portable telephone through a given stationary apparatus, it transmits a simultaneous calling request signal to whichever of the other portable telephones are not in use through corresponding stationary apparatuses. The main apparatus then receives, from that responding portable telephone through the corresponding stationary apparatus, an incoming call response signal including an extension number of the responding portable telephone which received the simultaneous calling request signal, and transmits a response display signal including that extension number to the portable telephone which requested simultaneous calling. The portable telephone which requested simultaneous calling displays the extension number of the responding portable telephone.

REFERENCES:
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patent: 4653090 (1987-03-01), Hayden
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patent: 4771448 (1988-09-01), Koohgoli et al.
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patent: 4805203 (1989-02-01), Oda
patent: 4805205 (1989-02-01), Faye
patent: 4856047 (1989-08-01), Saunders

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