Radio telephone system control apparatus and method

A radio telephone system control apparatus comprising:

• a plurality of radio telephone handsets, each having a handset transceiver;
• a base station connected to a wired telephone channel;
• a base station transceiver for exchanging radio telephone signals between said base station and said handset transceiver for each of said plurality of radio telephone handsets;
• means provided in said base station for detecting a ring signal on said wired telephone channel;
• means for sending a paging signal to said handset transceiver for each of said plurality of radio telephone handsets from said base station transceiver when said ring signal is detected by said detecting means;
• means for sending a paging response signal to said base station transceiver from said handset transceiver for each of said plurality of radio telephone handsets in response to said paging signal;
• means responsive to said paging response signal for sending a channel designating signal to said handset transceiver for each of said plurality of radio telephone handsets from said base station transceiver;
• means for switching the radio channel of said base station transceiver to a radio channel corresponding to said channel designating signal;
• means responsive to said channel designating signal for switching a radio channel of said handset transceiver for one of said plurality of radio telephone handsets to a radio channel corresponding to said channel designating signal,
• thereby controlling the connection between said wired telephone channel and any one of said plurality of radio telephone handsets in response to said ring signal on said wired telephone channel, and using a single base station.

Radio telephone system control apparatus comprising:

• a plurality of radio telephone handsets, each having a handset transceiver;
• a base station having a base station transceiver, connected to a wired telephone channel for exchanging signals between said handset transceiver for each of said plurality of radio telephone handsets and said base station transceiver;
• means responsive to a predetermined transfer operation for sending a transfer address designation signal to said base station transceiver from the handset transceiver of one of said plurality of radio telephone handsets subject to a transfer operation;
• means responsive to reception of said transfer address designating signal for sending signal to the handset transceiver of a transfer addressed radio telephone handset from the base station transceiver;
• means responsive to reception of said paging signal for sending a paging response signal to said base station transceiver from said transfer addressed radio telephone handset;
• means responsive to reception of said paging response signal for sending a bell ringing status signal to said transfer addressed radio telephone handset from said base station transceiver;
• means provided in said transfer addressed radio telephone handset for producing a call tone for sending an off-hook signal to said base station transceiver from said transfer addressed radio telephone handset when said transfer addressed radio telephone handset goes off-hook;
• and
• means responsive to said off-hook signal for a radio telephone handset which has issued a transfer signal from said base station transceiver for substituting said radio telephone handset which has issued said transfer address designating signal with said wired telephone channel and said transfer addressed radio telephone handset which has sent out said off-hook signal.

A method of controlling a radio control system of the type wherein the connection of a wired telephone channel and a plurality of radio telephone handsets is controlled by a single base station connected to said wired telephone channel, said method comprising the steps of:

• detecting a ring signal on said wired telephone channel;
• sequentially sending, with a predetermined time difference, a paging signal to said plurality of radio telephone handsets from said base station when said ring signal is detected;
• connecting a radio channel of said base station to the same radio channel as any one of said plurality of radio telephone handsets responding to said paging signal;
• and
• establishing a speech channel between said responding one of said plurality of radio telephone handsets and said wired telephone channel connected to said base station.

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone handsets is controlled by a single base station connected to said wired telephone channel, said method comprising the steps of:

• detecting a ring signal on said wired telephone channel;
• sending a paging signal to said plurality of radio telephone handsets from said base station when said ring signal is detected;
• sending a paging response signal to said base station from said plurality of radio telephone handsets in response to said paging signal;
• sending a channel designating signal to said plurality of radio telephone handsets from said base station in response to said paging response signal;
• switching a radio channel of said base station to a radio channel corresponding to said channel designating signal;
• switching a radio channel of said plurality of radio telephone handsets to a radio channel corresponding to said channel designating signal in response to said channel designating signal;
• and
• establishing a speech channel between one of said plurality of radio telephone handsets responding to said paging signal and said wired telephone channel connected to said base station.

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone handsets is controlled by a single base station having a base station transceiver, said method comprising the steps of:

• sending a transfer address designating signal to said base station transceiver from one of said plurality of radio telephone handsets which has sent out a transfer signal in response to a predetermined transfer operation hereinafter called a transfer address radio telephone handset;
• sending a paging signal to said transfer address radio telephone handset from said base station transceiver when said transfer address designating signal is received;
• sending a paging response signal to said base station transceiver from said transfer address radio telephone handset when said paging signal is received;
• and
• connecting the transfer address radio telephone handset responsive to said paging signal to said wired telephone channel connected to said base station instead of said one of said plurality of radio telephone handsets which has operated to send a transfer signal.