Radio telephone system control apparatus and method

Claim 2

Radio telephone system control apparatus comprising: a plurality of radio telephone sets, each having a slave radio set; a master apparatus connected to a wired telephone channel for exchanging signals between the master apparatus and the slave radio sets of said telephone sets; characterized by comprising: means provided for said master apparatus for detecting a paging through said wired telephone channel; means for sequentially sending, with a predetermined time difference, paging signals each containing a channel designating signal to the slave radio sets of said plurality of radio telephone sets from the master radio set of said master apparatus when said paging is detected; means responsive to the received paging signal for sending a paging response signal to the master radio set of said master apparatus from the slave radio sets of said radio telephone sets, and for switching the radio channel of the slave radio sets of said radio telephone sets to a radio channel corresponding to said channel designating signal; means for switching the radio channel of said master radio set of said master apparatus to a radio channel corresponding to said channel designating signal when said paging response signal is received within a predetermined interval after sending out said paging signal from the master radio set of said master apparatus. whereby the connection control between said wired telephone channel and either one of said plurality of radio telephone sets based on the paging via said wired telephone channel is effected by a single master apparatus,

Claim 3

The radio telephone system control apparatus according to claim 1 wherein said paging signals are sequentially sent out from the master radio sets of said master apparatus to the slave radio sets of said plurality of radio telephone sets according to a predetermined order of priority which is preset corresponding to respective radio telephone sets.

Claim 4

The radio telephone system control apparatus according to claim 1 wherein said paging signals are sequentially sent out from the master radio set of said master apparatus according to an order of priority which is randomly set each time said paging is detected by said detecting means.

Claim 5

The radio telephone system control apparatus according to claim 1 wherein said paging signals are sequentially sent out from the master radio set of said master apparatus to the slave radio sets of said plurality of radio telephone sets according to a predetermined order of priority which is set according to a speech hysteresis of respective radio telephone sets.

Claim 6

The radio telephone system control apparatus acceding to claim 4 wherein said order of priority is set such that previously spoken radio telephone set is placed at the uppermost order.

Claim 7

The radio telephone system control apparatus according to claim 1 further comprising: means for sending a bell ringing signal from the master radio set of said master apparatus to the slave radio sets of said radio telephone sets after the radio channel of the master radio set of said master apparatus has been switched to a speech channel corresponding to said channel designating signal; means provided for said radio telephone set for producing an origination tone signal in accordance with said radio telephone set; and means responsive to said origination tone signal for sending an off-hook signal to the master radio set of said master apparatus when said radio telephone set hooks off in response to said paging signal so as to connect said wired telephone channel to said radio telephone set which has sent out said off-hook signal.

Claim 8

The radio telephone system control apparatus according to claim 6 wherein said bell ringing signal is sent to all radio telephone sets.

Claim 9

The radio telephone system according to claim 1 further comprising: means for sending to the slave radio set of said radio telephone set from the master radio set, a bell ringing signal when there is a paging through said wired telephone channel, whereas a bell not ringing signal when there is no paging, after the radio channel of the master radio set of said master apparatus has been switched to a speech channel corresponding to said channel designating signal; means provided for said radio telephone set for producing a call tone signal in response to said bell ringing signal; means responsive to said paging signal for sending an off-hook signal to the master radio set of said master apparatus from the slave radio set of said radio telephone set when said radio telephone set hooks off; and means for returning the telephone system to a waiting state when said radio telephone set does not receive either one of said bell ring ringing signal and said not bell ringing signal.

Claim 10

The radio telephone system control apparatus according to claim 8 wherein said bell ringing signal and said not bell ringing signal are supplied to all radio telephone sets.

Claim 11

The radio telephone system control apparatus according to claim 1 wherein said paging signal sent from the master radio set of said master apparatus to the slave radio sets of said radio telephone sets is added with an identifying code that identifies addressed radio telephone sets.

Claim 12

The radio telephone system control apparatus according to claim 1 wherein said paging response signal sent to the master radio set of said master apparatus from the slave radio sets of said radio telephone sets is added with an identifying code that identifies the originating radio telephone set.

Claim 13

The radio telephone system control apparatus according to claim 10 wherein said identifying code comprises a first identifying code common to said plurality of radio sets and a second identifying code corresponding to respective ones of said radio telephone sets.

Claim 14

The radio telephone system control apparatus according to claim 1 wherein the master radio set of said master apparatus and the slave radio set of said radio telephone set arrest a control channel when they are in a waiting state, and wherein the radio channel of the master radio set of said master apparatus and the radio channel of the slave radio set of said radio telephone set are switched to a speech channel from said control channel in response to said channel designating signal.

Claim 15

The radio telephone system control apparatus according to claim 1 wherein the master radio set of said master apparatus and the slave radio sets of said radio telephone sets arrest a predetermined channel when they are in a waiting state, and wherein the radio channel of the master radio set of said master apparatus and the radio channel of the slave radio sets of said radio telephone sets are switched to the other speech channel front said predetermined speech channel in response to said channel designating signal.

Claim 16

Radio telephone system control apparatus comprising: a plurality of radio telephone sets, each having a slave radio set; a master apparatus connected to a wired telephone channel for exchanging signals between the master apparatus and the slave radio sets of said radio telephone sets; characterized by comprising: means provided for said master apparatus for detecting a paging through said wired telephone channel; means for sending paging signal to the slave telephone sets of said radio telephone sets from the master radio set of said master apparatus when said paging is detected by said detecting means; means for sending a paging response signal to the master radio set of said master apparatus from the slave radio set of said radio telephone set in response to said paging signal; means responsive to said paging response signal for sending a channel designating signal to the slave radio set of said radio telephone set from the master radio set of said master apparatus; means for switching the radio channel of the master radio set of said master apparatus to a radio channel corresponding to said channel designating signal: means responsive to said channel designating signal for switching a radio channel of the slave radio set of said radio telephone set to a radio channel corresponding to said channel designating signal, thereby effecting connection control between said wired telephone channel and either one of said plurality of radio telephone sets based on the paging through said wired telephone channel with a single master apparatus.

Claim 17

Radio telephone system control apparatus comprising: a plurality of radio telephone sets, each having a slave radio set; a master apparatus connected to a wired telephone channel for exchanging signals between the master apparatus and the slave radio sets of said radio telephone sets; characterized by comprising: means provided for said master apparatus for detecting a paging through said wired telephone channel; means for sending paging signal to the slave telephone sets of said radio telephone sets from the master radio set of said master apparatus when said paging is detected by said detecting means; means for sending a paging response signal to the master radio set of said master apparatus from the slave radio set of said radio telephone set in response to said paging signal; means responsive to said paging response signal for sending a channel designating signal to the slave radio set of said radio telephone set from the master radio set of said master apparatus; means for switching the radio channel of the master radio set of said master apparatus to a radio channel corresponding to said channel designating signal: means responsive to said channel designating signal for switching a radio channel of the slave radio set of said radio telephone set to a radio channel corresponding to said channel designating signal, thereby effecting connection control between said wired telephone channel and either one of said plurality of radio telephone sets based on the paging through said wired telephone channel with a single master apparatus.

Claim 18

The radio telephone system control apparatus according to claim 15 wherein sending out of said channel designating signal to the slave radio sets of said radio telephone sets from the master radio set of said master apparatus is made to all slave radio sets of said radio telephone sets, and wherein radio channels of all slave radio sets of said radio telephone sets are switched to a radio channel corresponding to said channel designating signal.

Claim 19

The radio telephone system control apparatus according to claim 15 which further comprises: means for sending a bell ringing signal to the slave radio sets of said radio telephone sets from the master radio set of said master apparatus after the radio channel of the master radio set of said master apparatus has been switched to a speech channel corresponding to said channel designating signal; means provided for said radio telephone set for producing a call tone in response to said bell ringing signal: and means responsive to said call tone for sending an off-hook signal to the master radio set of said master apparatus from the slave radio set of said radio telephone set when said radio telephone set hooks off; thereby interconnecting said wired telephone channel and a radio telephone set which has sent out said off-hook signal.

Claim 20

The radio telephone system control apparatus according to claim 17 wherein said bell ringing signal is sent to all radio telephone sets.

Claim 21

The radio telephone system control apparatus according to claim 15 which further comprises: means for sending a bell ringing signal to the slave radio set of said radio telephone set from the master radio set of said master apparatus when there is a paging through said wired telephone channel after the radio channel of the master radio set of said master apparatus has been switched to a speech channel corresponding to said channel designating signal, but sending a not bell ringing signal when there is no paging; means provided for said radio telephone set for generating a call tone in response to said bell ringing signal; means responsive to said call tone for sending an off-hook signal to the master radio set of said master device from the slave radio set of said radio telephone set when said radio telephone set hooks off; and means for returning the telephone system to a waiting state when either one said bell ringing signal and said not bell ringing signal is not received by said radio telephone set, thereby interconnecting said wired telephone channel and said radio telephone set which has sent said off-hook signal.

Claim 22

The radio telephone system control apparatus according to claim 19 wherein said bell ringing signal and said not bell ringing signal are sent to all radio telephone sets.

Claim 23

The radio telephone system control apparatus according to claim 15 wherein said paging signal and said channel designating signal are sent over an interval longer than a period of intermittent reception.

Claim 24

Radio telephone system control apparatus comprising: a plurality of radio telephone sets, each having a slave radio set; a master apparatus connected to a wired telephone channel for exchanging signals between the slave radio sets of said radio telephone set and said master apparatus; characterized by comprising: means responsive to a predetermined transfer operation for sending a transfer address designation signal to the master radio set of said master apparatus from a slave radio set of said radio telephone set subjected to a transfer operation; means responsive to a reception of said transfer address designating signal for sending a paging signal to the slave radio set of an addressed radio telephone set from the master radio set of said master apparatus; means responsive to a receival of said paging signal for sending a paging response signal to the master radio set of said master apparatus from the slave radio set of said transfer addressed radio telephone set; means responsive to a receival of said paging response signal for sending a bell ringing signal to the slave radio set of said radio telephone set from the master radio set of said master apparatus; means provided for said radio telephone set for producing a call tone for sending an off-hook signal to the radio telephone set of said master apparatus from the slave radio set of said transfer addressed radio telephone set when said transfer addressed radio telephone set hooks off; and means responsive to said off-hook signal for the slave radio set of a radio telephone set which has issued a transfer signal from the master radio set to said master apparatus, thereby substituting said radio telephone set which has issued said transfer signal with said wired telephone channel and said transfer address radio telephone set which has sent out said off-hook signal.

Claim 25

Radio telephone system control apparatus comprising: a plurality of radio telephone sets, each having a slave radio set; a master apparatus connected to a wired telephone channel for exchanging signals between the slave radio sets of said radio telephone set and said master apparatus; characterized by comprising: means responsive to a predetermined transfer operation for sending a transfer address designation signal to the master radio set of said master apparatus from a slave radio set of said radio telephone set subjected to a transfer operation; means responsive to a reception of said transfer address designating signal for sending a paging signal to the slave radio set of an addressed radio telephone set from the master radio set of said master apparatus; means responsive to a receival of said paging signal for sending a paging response signal to the master radio set of said master apparatus from the slave radio set of said transfer addressed radio telephone set; means responsive to a receival of said paging response signal for sending a bell ringing signal to the slave radio set of said radio telephone set from the master radio set of said master apparatus; means provided for said radio telephone set for producing a call tone for sending an off-hook signal to the radio telephone set of said master apparatus from the slave radio set of said transfer addressed radio telephone set when said transfer addressed radio telephone set hooks off; and means responsive to said off-hook signal for the slave radio set of a radio telephone set which has issued a transfer signal from the master radio set to said master apparatus, thereby substituting said radio telephone set which has issued said transfer signal with said wired telephone channel and said transfer address radio telephone set which has sent out said off-hook signal.

Claim 26

The radio telephone system control apparatus according to claim 22 wherein said paging signal sent to the slave radio set of said transfer addressed radio telephone set from the master radio set of said master apparatus is added with an identifying code for identifying an addressed radio telephone set.

Claim 27

The radio telephone system control apparatus according to claim 22 wherein said paging response signal sent to the master radio set of said master apparatus from the slave radio set of said transfer addressed radio telephone set is added with an identifying code that identifies a radio telephone set which has issued a transfer signal.

Claim 28

The radio telephone system control apparatus according to claim 22 wherein said paging signal sent to the slave radio set of the radio telephone set which has issued a transfer signal from the master radio set of said master apparatus is added with an identifying code that identifies an addressed radio telephone set.

Claim 29

The radio telephone system control apparatus according to claim 22 further comprising means responsive to the sending out of said transfer address designating signal for displaying the fact that the radio telephone set requested transfer is now being transferring; and means for terminating the display in response to a termination of a transfer termination signal.

Claim 32

The radio telephone system control method according to claim 27 further comprising the steps of: sending a bell ringing signal to said radio telephone set from said master apparatus when the radio channel of said master apparatus and the radio channel of said radio telephone set are connected to the same channel; causing said radio telephone set to generate a call tone in response to said bell ringing signal; sending an off-hook signal to the master apparatus from said radio telephone set when said radio telephone set hooks off in response to said call tone so as to interconnect said wired telephone channel and a radio telephone set sent out said off-hook signal.

Claim 33

The radio telephone system control method according to claim 27 which further comprises the steps of: sending a bell ringing signal when a paging is made to said radio telephone set from said master apparatus through said wired telephone channel after the radio channel of said master channel and the radio channel of said radio telephone set have been connected to the same channel, but sending a not bell ringing signal when said paging is not made; generating a call signal from said radio telephone set in response to said bell ringing signal; sending an off-hook signal to said master apparatus from said radio telephone set when it hooks off in response to said call tone; and restoring a radio telephone set to a waiting state when said radio telephone set does not receive either one of said bell ringing signal and said not bell ringing signal so as to interconnect said wired telephone channel and said radio telephone set which has sent out said off-hook signal.

Claim 34

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone sets is controlled by a single master apparatus connected to said wired telephone channel, said method being characterized by comprising the steps of: detecting a paging through said wired telephone channel; sending a paging signal to said radio telephone set from said master apparatus when said paging is detected; sending a paging response signal to said master apparatus from said radio telephone set in response to said paging signal; sending a channel designating signal to said radio telephone set from said master apparatus in response to said paging response signal; switching a radio channel of said master apparatus to a radio channel corresponding to said channel designating signal; switching a radio channel of said radio telephone set to a radio channel corresponding to said channel designating signal in response to said channel designating signal; and establishing a speech channel between a radio telephone set responded to said paging signal and said wired telephone channel connected to said master apparatus.

Claim 35

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone sets is controlled by a single master apparatus connected to said wired telephone channel, said method being characterized by comprising the steps of: detecting a paging through said wired telephone channel; sending a paging signal to said radio telephone set from said master apparatus when said paging is detected; sending a paging response signal to said master apparatus from said radio telephone set in response to said paging signal; sending a channel designating signal to said radio telephone set from said master apparatus in response to said paging response signal; switching a radio channel of said master apparatus to a radio channel corresponding to said channel designating signal; switching a radio channel of said radio telephone set to a radio channel corresponding to said channel designating signal in response to said channel designating signal; and establishing a speech channel between a radio telephone set responded to said paging signal and said wired telephone channel connected to said master apparatus.

Claim 36

The radio telephone system control method according to claim 30 further comprising the steps of; sending a bell ringing signal to the radio telephone set from said master apparatus after the radio channel of said master apparatus has been switched to a speech channel corresponding to said channel designating signal; generating a call tone from said radio channel set in response to said bell ringing signal; sending an off-hook signal to said master apparatus from a radio telephone set which has hooked off in response to said paging tone so as to interconnect said wired telephone channel and said radio telephone set which has sent out said off-hook signal.

Claim 37

The radio telephone control method according to claim 30 further comprising the steps of: sending a bell ringing signal when a paging is made through said wired telephone channel to said radio telephone set from said master apparatus after the radio channel of said master apparatus has been switched to a speech channel corresponding to said channel designating signal, but sending a not bell ringing signal where there is no paging; generating a call tone from said radio telephone set in response to said bell ringing signal; sending an off-hook signal to said master apparatus from said radio telephone set when said radio telephone set hooks off in response to said call tone; and restoring said radio telephone set to a waited state when said radio telephone set does not receive either one of said bell ringing signal and said not bell ringing signal so as to interconnect said wired telephone channel and said radio telephone set which has sent out said off-hook signal.

Claim 38

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone sets is controlled by a single master apparatus, said method being' - characterized by comprising the steps of: sending a transfer address designating signal to the master radio set of said master apparatus from a radio telephone set which has sent out a transfer signal in response to a predetermined transfer operation; sending a paging signal to a transfer address radio telephone set from said master apparatus when said transfer address designating signal is received; sending a paging response signal to the master radio set of said master apparatus from said transfer address radio telephone set when said paging signal is received; and connecting the transfer address telephone set responsive to said paging signal to said wired telephone channel connected to said master apparatus instead of a radio telephone set which has operated to send a transfer signal.

Claim 39

A radio telephone system control method of the type wherein a connection between a wired telephone channel and a plurality of radio telephone sets is controlled by a single master apparatus, said method being' - characterized by comprising the steps of: sending a transfer address designating signal to the master radio set of said master apparatus from a radio telephone set which has sent out a transfer signal in response to a predetermined transfer operation; sending a paging signal to a transfer address radio telephone set from said master apparatus when said transfer address designating signal is received; sending a paging response signal to the master radio set of said master apparatus from said transfer address radio telephone set when said paging signal is received; and connecting the transfer address telephone set responsive to said paging signal to said wired telephone channel connected to said master apparatus instead of a radio telephone set which has operated to send a transfer signal.

Claim 40

The radio telephone system control method according to claim 33 further comprising the steps of displaying such that said radio telephone set issuing a transfer signal is now transferring in response to sending out of said transfer address designating signal, and terminating said display when a transfer termination signal is received.