Kabushiki Kaisha Toshiba

Nec Corporation

Nippon Telegraph and Telephone Corporation

Syoji Huse

Koji Ono

Ryoji Kawasaki

Kazuyuki Tate

Noboru Saegusa

Toshihiro Hara

Akio Yotsutani

Yukihiro Shimura

Interconnection control method in cordless telephone system

A cordless telephone system includes a connector connected to a subscriber telephone line and at least one radio telephone set through a radio channel to establish or hold a communication channel between the ratio telephone set and a subscriber. The connector includes a control unit incorporating a timer. The control unit sets the system in a self hold state in which the radio channel is kept connected or a complete hold state in which the radio channel is disconnected on the basis of a hold signal from the radio telephone set, the presence/absence of a radio reception signal within a predetermined period of time preset in the timer, and the type of reception signal.

Cordless telephone system

A radio telephone system includes a base station connected to a telephone exchanger and a plurality of mobile stations connected to the base station through a radio channel including a control channel and communication channels. The base station includes a transmitter/receiver, a receiver, and a controller. In a stand-by mode, the controller sets a channel of the transmitter/receiver to the control channel to receive a calling signal from each mobile station and sets a channel of the receiver to a given communication channel to monitor vacancy of the communication channels.

Radio telephone system

Growing community of inventors

Tokyo, Japan

Syoji Huse