Digital cordless telephone system having communication mode swit

Details Digital cordless telephone system having communication mode swit Digital cordless telephone system having communication mode swit

1997-11-26

2000-02-08

Chin, Wellington

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455462, 455465, 455552, 455573, 455421, H04Q 732, H04Q 718

Patent

active

060236272

ABSTRACT:
A digital cordless telephone system includes a plurality of radio base stations, a master unit, a subsidiary unit, a charging base, and a communication mode switching unit. The radio base stations are connected to a public line and each cover a certain service area. The master unit is connected to a personal line. The subsidiary unit is connected to a nearby radio base station or the master unit through a time-division multiplex radio channel to transmit/receive speech and control data. The charging base charges the subsidiary unit. The communication mode switching unit includes a detection section for detecting that the subsidiary unit is placed on the charging base, and a control section for automatically selecting whether to connect the subsidiary unit to a radio base station or the master unit depending on whether the subsidiary unit is placed on the charging base.

REFERENCES:
patent: 5428668 (1995-06-01), Dent et al.

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