JP2001257784A - Group call system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a group call system that can ensure secrecy and excellent sound quality of communication terminals making a simultaneous call in a group so as to supplement functions deficient in a transceiver. SOLUTION: A PHS terminal 11 is used for a wireless terminal for a group call and connected to a PABX 10 containing a multi-function phone 12, a truck line 13 and a leased line 14 via a wireless channel. The PHS terminal 11 is connected to a group call processing section 25 of its own group registered to a group registration storage section 41 as an own group detection connection 31 through the operation of an own group call request, connected to all group call processing sections 25, 26 as an all group contact 32 through a button operation of a simultaneous contact request during an own group call so as to execute a group speech function such as calling of a communication terminal registered in an individual call destination storage section 42 through an operation of an individual call request and has a PABX function such as an individual incoming call and a group incoming call as an extension terminal of the PABX 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a group communication system in which a plurality of communication terminals are arranged in at least one group and a simultaneous communication is performed by the groups, and more particularly, a good sound quality and confidentiality of the communication terminals performing the simultaneous communication. The present invention relates to a group call system that can improve the usability by ensuring multi-functionality.

[0002]

2. Description of the Related Art In this type of group call system, a communication terminal having a group configuration is used as a means of communication between an employee and a manager in a large premises such as a large store, an entertainment facility, a factory, or the like. As the communication terminal, a portable wireless terminal is used as a small mobile device.

Conventionally, in this type of group communication system, a typical example is a transceiver. The transceiver enables simultaneous calls for each group by a plurality of portable wireless terminals. In addition, in addition to the above-mentioned simultaneous call of many persons, functions such as individual call with a specific partner, broadcasting for paging, and group management by an administrator are realized by the wireless terminal.

However, in such a wireless terminal,
Since the quality of a telephone is not required, there is a problem in sound quality and confidentiality. 2. Description of the Related Art In recent years, PHS (Personal Handy Phone System) terminals have become widespread as simple mobile terminals, but PHS terminals are housed and used in private branch exchanges.

On the other hand, in a private branch exchange, simultaneous communication by a plurality of terminals is realized as a conference call.
Terminals can also participate in this simultaneous call. Further, such simultaneous calls are those in which a meeting convenor calls and connects to a plurality of terminals by special number operation, and those in which a pre-registered terminal is automatically called by a special number operation of the meeting convenor to participate in the conference. Various methods and means have been proposed, such as a method of joining a conference by a special number operation of a participant.

[0006]

The above-described conventional group communication system using a transceiver using a wireless terminal does not have a telephone function, and therefore does not have the same quality as a telephone, and thus has a problem in sound quality and confidentiality. There is. Further, there is a problem that a specific terminal can be called, but one terminal cannot be called from any other terminal.

On the other hand, a PHS housed in a private branch exchange
The terminal has a telephone function and can solve the above-mentioned problems, but in terms of simultaneous calls, the terminals for simultaneous calls are limited to a group configured for each purpose, and the large-scale stores and entertainment facilities as described above are used. In a large premises such as a factory, control is complicated in a case where a group is formed in advance as a means of communication between an employee and a manager. Furthermore, it is inevitable that it is difficult to immediately and voluntarily participate in other groups.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to ensure good sound quality and confidentiality of a communication terminal that performs simultaneous communication, and to provide a multi-function combining a function of a transceiver and a function of a telephone. It is an object of the present invention to provide an easy-to-use group call system by realizing a group communication system.

[0009]

A group call system according to the present invention comprises a plurality of communication terminals arranged in at least one group to perform simultaneous calls by the groups, wherein the communication terminals are connected to a private branch exchange. PABX)
Group which is a PHS terminal in a personal handy phone system (PHS) registered as a base unit with the base unit as a base unit and a multi-function telephone connected to the private branch exchange, and which requests at least participation of the self-group in a simultaneous call It has a function of transmitting a call request to the private branch exchange and a plurality of function buttons corresponding to functions necessary for a group call, and the private branch exchange stores the registered group data of the communication terminals to be accommodated. A group registration storage unit, comprising a group call processing unit for each group that connects the communication terminals in the same group and performs a voice mixing process, wherein when the own group call request is received from one communication terminal, Search the group registration storage to find out which group this communication terminal was registered in and before it was assigned to this group The communication terminal is connected to the group call processing unit to participate in the simultaneous call of the own group, and when a signal transmitted by pressing the function button is received during the simultaneous call, a predetermined signal is received based on the signal. Performing the functions of

[0010] In the group registration storage unit in this configuration,
In large premises such as large stores, recreational facilities, factories, etc., by storing in advance the groups that constitute the means of communication between employees and managers and between employees, it is possible to participate in simultaneous calls of groups. It can be easily realized as in the conventional case. Also, by providing a function button for group call and its signal, the conventional transceiver function can be completely realized. Further, since the wireless terminal is a PHS terminal, the wireless terminal is excellent in sound quality and confidentiality and can have a telephone function. Furthermore, a multifunctional telephone connected to the private branch exchange via a wire can also participate in the simultaneous call of the group as well as the wireless terminal.

[0011] In addition to the above-mentioned function button of the self-group call request to the communication terminal, a function button of a simultaneous communication request for requesting the private branch exchange to perform simultaneous transmission of voice for all the call groups is provided. A function button for an individual call request for requesting the private automatic exchange to connect to one communication terminal, and a function for a broadcast request for requesting a connection to the private automatic exchange by specifying an external speaker group in which external speakers are registered in advance. Button, a function button for requesting a call with another group requesting the private automatic exchange to specify a group to participate in a simultaneous call in another group,
It has function buttons such as function buttons for requesting a response to the incoming call or simultaneous communication to the private branch exchange, and the private branch exchange has a necessary data storage unit corresponding to each of the above function buttons. When a corresponding request signal is transmitted by pressing the function button, a function equivalent to a transceiver can be completely realized.

Therefore, when the specific PHS terminal has only a large number of function buttons as a transceiver function and does not have a calling function of a telephone, it can be provided as a simple wireless terminal with improved quality and secrecy.

Further, the private branch exchange receives a signal indicating that one of the communication terminals in the group receiving voice from the terminal of the simultaneous communication request has pressed the function button of the response request based on the simultaneous communication request. In this case, a two-way call can be made by forming a communication path between the responding communication terminal and the communication terminal of the simultaneous communication request.

When an incoming call is made to a communication terminal which is in a simultaneous call, the private branch exchange directly sends a ringing tone within the communication band to this communication terminal, and a response request is sent from the communication terminal which received the call. By receiving a signal indicating that the function button has been pressed, a two-way call can be made by forming a communication path. Further, the private branch exchange has one special number for the function executed in the simultaneous call by the group, and automatically receives an incoming call from an outside line and receives the special number and a number code following the special number. In this case, it is possible to execute a predetermined connection function in each of the group call connection to the received number and the simultaneous connection when the received number is zero.

Further, the private branch exchange has an external signal interface for receiving an emergency notification signal or a periodic notification signal for scheduled broadcasting from the outside in response to an emergency, and an external sound source interface for connecting an external sound source. When an emergency call signal is input, or when a predetermined time notification signal is input from a separately provided timer, the simultaneous call is carried out to any one of all of the simultaneous calls and a preset specific group The external sound source interface can be connected to the corresponding group call processing unit to participate in simultaneous calls of all groups.

When the private branch exchange establishes a communication path and allows two-party communication, the two-way handset is connected one-to-one, and the communication that participates in the group communication based on the setting. By switching from the group call processing unit in the terminal to the group call processing unit dedicated to two parties,
The communication terminal can respond to an inquiry such as a simultaneous communication even while the two-party call is being performed independently.

[0017]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a connection diagram of a communication terminal showing an embodiment of the present invention.

As shown in the figure, a group call system according to the present invention uses a PHS (Personal Handy Phone System) which is a communication terminal as a wireless terminal for performing a group call, and uses a PHS terminal used as a communication terminal for a local automatic communication. An exchange (hereinafter abbreviated as PABX) 10 is used, and a communication terminal for performing a group call is provided with a function button for the group call.

The PABX 10 accommodates a PHS terminal and a multifunctional telephone as communication terminals, has a plurality of antennas 1 for connecting the PHS terminals by radio lines, and
It is assumed that each of the S terminal and the multifunction telephone is grouped into one of two groups 2 and 3.
Further, it is assumed that the PABX 10 accommodates the broadcast speaker 4 and the external line 5 connected to the public network or the upper PABX.

By installing the plurality of antennas 1 at various places in a large store or the like, it becomes possible to make a group call at the PHS terminal over a wide area.

Normally, one group includes a plurality of PHS terminals and at least one multifunction telephone, and one communication terminal to be group-talked belongs to any one group. It is assumed that the communication terminal has an LCD (liquid crystal display) display, dial buttons, and function buttons. Also, the PHS terminal has the L
In addition to a PHS terminal having a normal telephone function provided with a CD display, a dial button, and a function button, a simple specific PHS having a function button of a transceiver without a dial-destination function for connection only for group calls and a telephone. A terminal is provided. Each of the specific PHS terminals has a terminal number as an extension number, and individual reception by the PABX 10 is possible.

FIG. 2 shows a list of function buttons possessed by the communication terminals for group calls. That is, corresponding to each of the function buttons 1 to 7,
For example, a call request with the own group (2), a simultaneous communication request, an individual call request, a response, a broadcast request, and a call request with another group (3) are assigned. These functions are provided in both the PHS terminal and the multi-function telephone set for the group call, and can be set flexibly by system data registered in the PABX 10 of the base unit. In the specific PHS terminal, the power switch is also used as the function button 1 by turning on the power switch for a long time and simultaneously transmitting power to the PABX 10 via the antenna and transmitting a "call request with the own group (2)" via the antenna. can do. When the power switch is used as the function button 1, the power switch is pressed for a short time. Therefore, in the specific PHS terminal, the function button 1 shown in FIG. 2 can be made unnecessary.

Next, the functions of the PABX 10, the PHS terminal 11 of the communication terminal, and the multifunctional telephone 12 will be described with reference to FIG. 3 and FIGS. FIGS. 1 to 3 show only the components directly related to the present invention. For example, the components which the PABX 10 normally requires as a private branch exchange but are not relevant to the basic matters of the present invention are not shown. Omitted.

Therefore, the PABX 10 shown in FIG.
It has a communication path between a PHS terminal 11 that communicates by a wireless line via an antenna 20 and a multifunction telephone 12 that is connected by wire, and further has a station line 13 that connects to a public network and a dedicated line that connects to another PABX. 14 form a communication path. In the illustrated PABX 10, illustration of means used for interconnection and switching connection of each communication line is omitted.

The PABX 10 includes an antenna interface 21 for connecting an antenna 20, a telephone interface 22 for connecting a multifunctional telephone 12, a central line interface 23 for connecting a central line 13, a dedicated line interface 24 for connecting a dedicated line 14, and a plurality of Group call processing unit 25, 2
6, central control device 30, group registration storage unit 41, individual call storage unit 42, broadcast output destination storage unit 43, external speaker interface 44, external signal interface 45,
And an external sound source interface 46.

It is assumed that each of the PHS terminal 11 and the multifunction telephone 12 is grouped into one of the groups 2 and 3 in FIG. 1 and has received the setting of the function button in FIG.

Each of the interfaces 21 to 24 is controlled by the central control unit 30. In the case of a two-party call, any one of the interfaces 21 to 24 that accommodates the other party via a two-party call dedicated group call processing unit (not shown). In the case of simultaneous calls within the same group, it is assumed that simultaneous calls can be made by simultaneously connecting to one group call processing unit.

The group call processing unit 25 is connected to, for example, the PHS terminal 11 and the multi-function telephone 12 belonging to the group 2 in FIG. 1 via an interface, and the group call processing unit 26 is connected to the PHS terminal belonging to the group 3 via the interface. Connects to the terminal 11 and the multi-function telephone 12, performs a sound mixing process of mixing sounds received from the connected communication terminals, sends the mixed sound to all the connected communication terminals, and simultaneously talks with members in the same group. Has been realized.

The central control unit 30 has a group detection connection 31, a whole group communication 32, an individual call 33, a broadcast connection 34, another group connection 35, a terminal incoming call 36, a group incoming call 37, and an emergency call 38 for a group call. , And the periodic report 39. The details of the central control device 30 will be described later with reference to a flowchart.

The group registration storage unit 41 stores each group 2,
The registration data of communication terminals grouped into groups of three, that is, communication terminals that have registered a group call are stored.
The individual call destination storage unit 42 pre-registers and stores the terminal number or telephone number of the communication terminal used by the store manager or the manager of the group as the individual call destination for each terminal or group for the grouped communication terminals. are doing. The call destination is not limited to the communication terminals registered in the group, and if the PABX 10 can call, the call information can be registered.

The broadcast output destination storage unit 43 stores, for example, a relationship between speaker positions corresponding to the function buttons 3 for each group. For example, only the external speakers belonging to each group can be enabled in a state where each group is divided into each floor. The external speaker interface 44 is connected to all of the external speakers for broadcasting, and controls the external speakers registered in the external speaker group designated by the communication terminal that has issued the broadcast request under the control of the central control device 30. Connecting.

The external signal interface 45 is an interface with an emergency sensor, a timer device, and the like, and receives a signal from the emergency sensor, the timer device, and transmits the signal to the central control device 30. External sound source interface 46
Is an interface with an external sound source device, which receives a plurality of sound sources and transmits them to the central control device 30.

Next, various operation functions when performing group communication will be described one by one with reference to flowcharts. Although the communication terminals registered in the group have the function buttons shown in FIG. 2, the function button 1 in the specific PHS terminal also serves as a power switch as described above.

First, referring to FIG. 4 and FIGS. 1 to 3, a description will be given of a case where a communication terminal registered in a group makes a normal telephone call and a case where it participates in a simultaneous call of its own group. In the case of a simultaneous call of the own group, the function of the own group detection connection 31 operates in the central control device 30.

The PHS terminal performs an off-hook operation (step S
1) Yes. In this case, the terminal is not a specific PHS terminal (procedure S
In a state where there is no pressing operation of the function button 1 at the same time (NO in 2) (NO in step S3), the function of the telephone by the dial operation can be executed (step S4). This function is terminated by the on-hook operation.

If the above step S3 is "YES" and the function button 1
Is pressed, a signal of the self-group call request is sent to the PABX 10 via the line. Since the central control device 30 receives the signal of the self-group call request, the function of the self-group detection connection 31 operates to search the registration of the communication terminal making the call request from the group registration storage unit 41 and perform the call request. Communication terminal is, for example, group 2
Is connected to the group call processing unit 25, the group 2 connected to the group call processing unit 25
Participate in a simultaneous call by a group with another communication terminal (step S
5) Yes.

In the specific PHS, the power is turned on by turning on a power switch (function button 1) to start communication (step S1). In this case, since the terminal is a specific PHS terminal (YES in step S2), a signal of the self-group call request is sent to PABX 10 via the wireless line. Accordingly, as described above, the central control device 30 receives the signal of the self-group call request, so that the process proceeds to the step S5.

In this state, if a function button shown in FIG. 2 is pressed (step S6), a function corresponding to a button described later can be executed (step S7).

After executing the function corresponding to the function button in step S7, similarly to "YES" in step S3, when the function button 1 for requesting a call with the own group is pressed (YES in step S8). Returning to step S5, the user can return to the call with the own group and participate again.

If the above procedure S6 is "NO" or the above procedure S8 is "NO", the procedure proceeds to step S9, and the executed function is terminated. If the procedure S9 is “YES” and the on-hook operation (power off) is performed, the communication terminal that has performed the on-hook operation (power off) exits the group call and ends the group call (step S10). On the other hand, step S9 is "N
If the on-hook operation (power-off) is not performed at "O", the procedure returns to the above-mentioned step 6, and the next function button can be designated.

According to this function, the communication terminal registered in the group call can join the group call or exit from the group call and terminate the call by a simple operation whenever the user desires.

Next, the contents of step S7 in FIG. 4 will be sequentially described with reference to FIGS. 5 to 8.

First, a case where a communication terminal registered in a group makes a simultaneous communication request will be described with reference to FIGS. In this case, in the central control device 30, the function of the all-group communication 32 operates.

When the communication terminal performs the operation of pressing the function button 2 in the procedure S6 during the self-group call shown in FIG. 4, the central control unit 10 issues a simultaneous communication request based on the operation of pressing the function button 2. A signal is received (procedure S1
1) Yes. Accordingly, in the central control unit 30, when the function of the all group communication 32 is operated and the communication path of the communication terminal which has issued the simultaneous communication request is connected to the group communication processing unit 25 in group 2, for example, It is also connected to the other group call processing unit 26 in the group to enable transmission to the group 3 communication terminals. Through such a procedure, connection can be made to all groups (procedure S12), and transmission can be made to the connected communication terminal.

In this state, when the currently connected communication terminal capable of simultaneous communication presses the function button 4 and responds, the central controller 30 detects this and accepts the response button operation (YES in step S13), The communication terminal and the answering terminal that have made the simultaneous communication request are connected to a group call processing unit dedicated to two-way communication or are directly connected to form a communication path between the two (step S14) to enable two-way communication. I do. This state continues to the procedure S8 shown in FIG. 4 described above. Step S13 above
Is "NO", the process proceeds to step S8, and the procedure ends.

With this function, when it is desired to search for an employee in a large store, the communication terminal holder makes a "simultaneous communication request" and calls on all the employees. It can be found without using a speaker.

Next, a case where a communication terminal registered in a group makes an individual call request will be described with reference to FIGS. In this case, in the central control device 30, the function of the individual call 33 operates.

When the communication terminal performs the pressing operation of the function button 3 in the procedure S6 during the self-group call shown in FIG. 4, the central control device 10 issues an individual call request based on the pressing operation of the function button 3. Accept the signal (procedure S
21). Therefore, the central control unit 30 searches the individual call destination storage unit 42 for the call number which is registered for the communication terminal which has issued the individual call request by operating the function of the individual call 33, and indexes the call terminal. The destination is called (procedure S22). In this state, the central controller 30
A predetermined ringing tone is transmitted to the communication terminal that has made the individual call request, and a ringing tone is transmitted within the communication band when the individual call destination is a communication terminal that is performing a group call.

Central controller 30 stops transmitting the ringing tone and the ringing tone when the called party responds (step S23), and the communication terminal that has made the individual call request and the communication terminal that has responded have two terminals. A two-way call is made possible by connecting to or directly connecting to the group call processing section dedicated to the two-way call (step S24). In this state, the procedure continues to step S8 shown in FIG.

With this function, if the communication terminal registered in the group has previously registered the extension of the manager as the individual call destination in the individual call destination storage unit 42, for example, By pressing the function button 3 of the request, a specific PH can be performed without dialing.
The communication terminal of the registered manager can also be called from the S terminal.

Next, a case where a communication terminal registered in a group issues a broadcast request will be described with reference to FIGS. In this case, the central controller 3
At 0, the function of the broadcast connection 34 operates.

When the communication terminal performs the pressing operation of the function button 5 in the procedure S6 during the self-group call shown in FIG. 4, the central control device 10 transmits a broadcast request signal based on the pressing operation of the function button 5. (Step S31)
I do. Accordingly, the central control device 30 indexes the external speaker of the broadcast output destination from the broadcast output destination storage unit 43 to the communication terminal that has requested the broadcast by operating the function of the broadcast connection 34, and replaces the indexed external speaker with the external speaker. The communication path between the communication terminal that has sent the broadcast request by notifying the interface 44 and the external speaker of the broadcast output destination is formed only for the transmission from the communication terminal to the external speaker (step S32), and the communication terminal broadcasts the external speaker. Make it possible. In this state, the procedure continues to step S8 shown in FIG. At this time, it is possible to disconnect only the transmission connection from the group call processing unit 25 connected up to that time by setting.

With this function, even when a person in charge of business broadcasts in-store, the broadcast can be performed on the spot from any communication terminal for group calls and from anywhere without using the console device for in-store broadcasting. In addition to being able to make calls, it is possible to listen to calls within the group even during broadcasting.

Next, a case in which a communication terminal registered in a group designates another group and makes a group call request will be described with reference to FIGS. In this case, in the central control device 30, the function of the other group connection 35 operates.

When the communication terminal performs the pressing operation of the function button 6 in the procedure S6 during the own group call shown in FIG. 4, the central control device 10 designates the group 2 based on the pressing operation of the function button 6. The received call request signal is received (procedure S41). Therefore, the central control unit 30
Connects the communication terminal that has made a call request specifying the group 2 by operating the function of the other group connection 35 to the group call processing unit 25 of the group 2 irrespective of the registration in the group registration storage unit 41 (procedure) S42) and separate from the group call processing unit of the own group to participate in the simultaneous call of the communication terminals of group 2; In this state, the procedure is as shown in FIG.
And the procedure S8 shown in FIG.

With this function, the manager or the store manager can monitor calls of other groups that are separated by floor or by charge, and can interrupt the calls to make inquiries.

As described above, the communication terminals registered in the group include a specific PHS terminal, and are assigned a terminal number and an extension number. Therefore, the central controller 3
0 can receive an individual incoming call for the communication terminals registered in the group by the function of the terminal incoming call 36 which the PABX normally has. When receiving a call to a communication terminal that is in a group call, the central control device 30 sends a ringing tone within a communication band for notifying the called communication terminal of the incoming call. In this state, when the called communication terminal presses the response function button 4, the central controller 30 receives the response signal, stops transmitting the ringing tone, and responds with the caller communication terminal. The communication terminal is connected to a group call processing unit dedicated to two-party communication or both are directly connected to form a communication path between the two and put into an individual communication state.

As in the case of the extension interconnection, even in the case of an incoming call from an external line of the PABX, the function of receiving an incoming call to a terminal normally included in the PABX works, and the communication terminals in the group can directly receive the incoming external line. In this case, the extension terminal representative number can be assigned to the communication terminals in the same group as one extension group, thereby realizing the representative number receiving function. Even if the received communication terminal is a specific PHS terminal, or if all the members of the group are on the floor and are in a group call, it is possible to respond to an incoming call from an outside line. Therefore, a specific PHS terminal is a PHS terminal registered in a group.
Even if the terminal is carried on the store floor, it is possible to eliminate the need for in-store broadcasting.

As described above, even if the individual communication state is established during the participation in the group call, the communication path of each communication terminal is not changed while the communication terminal is connected to the group call processing unit dedicated to the two-way call. As a communication terminal connected to the group call processing unit, it is possible to listen to and respond to a report or incoming call notification by simultaneous communication.

In addition, incoming calls to each group can be made from an outside line including a central office line or a dedicated line. That is, PABX1
Numeral 0 has a dial-in function using an automatic answering apparatus, and a call arriving from an outside line to the automatic answering apparatus normally receives a dial number at the automatic answering apparatus.

By providing one special number for the call request function with the group shown in FIG. 2, the central control unit 30 can determine whether the first dial number received by the automatic answering apparatus is the special number. The function of the group incoming call 37 operates with the number code following the group code as the group corresponding number, and connects the incoming line to the group call processing unit 25 corresponding to the received number code (for example) 2, for example. Therefore, the calling communication terminal connected to this outside line can participate in the simultaneous call of group 2. Further, when the number code is “0”, the function of the “broadcast request” is executed. Therefore, the calling communication terminal connected to this outside line can connect to all groups and transmit.

With such a configuration, it is possible for a manager to issue an instruction to an employee who is in a group call from outside. In addition, when the calling party is not specified, or when the extension number of the calling party is unknown, the purpose can be achieved by calling all the members using the simultaneous communication function from the outside line. Also, regardless of whether the external line is connected to the public network or PABX, incoming calls from external lines can be automatically group-connected or connected by simultaneous communication.

Next, the functions of the emergency notification 38 and the periodic notification 39 of the central control unit 30 will be described. As described above, the external signal interface 45 connects various signal output devices and supplies them internally. The signals include, for example,
There is an emergency call signal generated in conjunction with the fire alarm. When receiving the emergency notification signal, the central control device 30 drives the function of the all group communication 32 of the simultaneous communication request to all the groups, and from the sound source connected via the external sound source interface 46 to all the people on the call. The incoming emergency call can be transmitted. When a device linked to a timer is used as the signal output device, the central control unit 3 outputs a sound source of a regular broadcast such as background music (BGM) or news at noon during a break or working time.
"0" can be transmitted to all the members who are simultaneously talking by a call request function for all groups or a preset individual group at a predetermined time.

In the above description, each function is individually described one by one. However, it is clear that more functions and great effects can be exhibited by a combination thereof, and the above description does not limit the present invention.

[0066]

As described above, according to the present invention, it is possible to ensure good sound quality and confidentiality of a communication terminal performing a simultaneous call, and to realize a multi-function combining a function of a transceiver and a function of a telephone. A group call system having an effect of being easy to use is obtained.

The reason is that PABX is adopted as a control device for group communication, and a PHS terminal which is used as a dedicated terminal of PABX and has excellent communication quality and confidentiality in wireless communication is used as a radio terminal having a transceiver function. And a button corresponding to a function for group call.

Further, since the PHS slave unit of the PABX dedicated terminal is used as a portable radio terminal, it is not necessary to carry both a group call dedicated terminal such as a transceiver and both. In addition, even when a dedicated group call terminal is used as a specific PHS terminal, a specific communication terminal such as a manager or a store manager can be called by registering an individual call destination, and an individual call can be received by the PABX function. . Furthermore, a specific PHS terminal can be turned on, and a general PHS terminal can participate in a simultaneous call of a group registered in advance by pressing a predetermined function button. Therefore, it is possible to participate in the group's call at will whenever the user wants, not as a meeting on the floor or hall of a large store.

Further, by using PABX, it is possible to allow an outside line to participate in a group call. Therefore, from the public network on the go, or from the upper PABX
You can also join a group call from an extension phone.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

FIG. 2 is a function button assignment diagram showing an embodiment of the communication terminal according to the present invention.

FIG. 3 is a functional block diagram showing one embodiment of the PABX in FIG. 1;

FIG. 4 is a flowchart showing one embodiment of a communication terminal according to the present invention.

FIG. 5 is a flowchart showing an embodiment of a simultaneous communication request according to the present invention.

FIG. 6 is a flowchart showing an embodiment of an individual call request according to the present invention.

FIG. 7 is a flowchart showing an embodiment of a broadcast request according to the present invention.

FIG. 8 is a flowchart showing one embodiment of a designated group call request according to the present invention.

[Explanation of symbols]

 1.20 antenna 2, 3 group 4 broadcasting speaker 5 outside line 10 PABX (automatic private branch exchange) 11 PHS terminal 12 multifunctional telephone 13 office line 14 dedicated line 21 antenna interface 22 telephone interface 23 office line interface 24 dedicated line interface 25, 26 Group call processing unit 30 Central control unit 31 Own group detection connection 32 All group communication 33 Individual call 34 Broadcast connection 35 Other group connection 36 Terminal incoming 37 Group incoming 38 Emergency call 39 Scheduled call 41 Group registration storage unit 42 Individual call destination storage Unit 43 broadcast output destination storage unit 44 external speaker interface 45 external signal interface 46 external sound source interface

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 3/42 H04M 3/42 G 5K067 102 102 9A001 H04Q 3/58 101 H04Q 3/58 101 7/38 7 / 04 D (72) Inventor Yasuhiro Shibuya 3-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture F-term in JVC, Ltd. 5K015 AB00 AD01 AF05 BA00 CA02 EA00 JA00 JA01 5K024 AA04 AA05 AA11 AA21 AA33 AA43 AA51 AA52 AA79 BB03 BB04 CC03 CC11 CC14 DD01 EE04 FF06 GG00 GG01 GG03 5K027 AA06 AA12 BB01 BB03 BB08 CC08 EE01 FF07 5 AA23 AA30 AA34 BB04 BB08 CC12 CC13 CC14 DD15 DD17 DD24 DD28 DD30 FF02 FF07 FF13 FF27 GG12 HH06 HH07 HH15 HH22 HH23 KK03 KK15 9A001 CC02 JJ18

Claims (13)

[Claims] 1. A personal handy phone in which a plurality of communication terminals are arranged in at least one group to perform simultaneous calls by the groups, wherein the communication terminal is registered in a slave unit with a private automatic exchange as a master unit. A multi-function telephone connected to the PHS terminal and the private branch exchange in the system, and a function for transmitting a self-group call request to the private private branch exchange requesting at least participation of the own group in a simultaneous call, and a group call Having a plurality of function buttons corresponding to various functions, the private branch exchange connects a communication terminal in the same group with a group registration storage unit that stores group data in which the communication terminals to be accommodated are registered. A group call processing unit for each group that performs a voice mixing process,
When receiving the self-group call request from one communication terminal, the group registration storage unit is searched to know the group in which the communication terminal is registered as the self-group and the group call processing unit assigned to this group The communication terminal is connected to the terminal to participate in a simultaneous call of the own group, and when a signal transmitted by pressing the function button is received during the simultaneous call, a predetermined function is executed based on the signal. A group call system. 2. The communication terminal according to claim 1, wherein the communication terminal has a function button for a simultaneous communication request for requesting transmission to all groups to the private branch exchange, and the private branch exchange receives the simultaneous communication from one communication terminal. When a request signal is received, only the transmission path of this communication terminal is connected to all the group call processing units performing simultaneous calls, and voice is transmitted to all groups. Group call system. 3. The private branch exchange according to claim 2, wherein, based on the broadcast request, one of the communication terminals in a group receiving voice from the broadcast request terminal presses a response request function button. When you receive a signal that you
A group communication system, wherein a communication path is formed between a communication terminal that has responded and a communication terminal that has requested the simultaneous communication, and a two-party communication is performed. 4. The private branch exchange according to claim 1, wherein the communication terminal has a function button for an individual call request for requesting the private automatic exchange to connect to one predetermined communication terminal. An individual call destination storage unit for registering a communication terminal of a call destination for each of at least one individual call request corresponding to the terminal; and when the signal of the individual call request is received from one communication terminal, the individual call destination The storage unit searches the communication terminal and the individual call request according to the individual call request, and sets one communication terminal registered correspondingly to the communication terminal that has issued the individual call request, and sets the communication terminal to the communication terminal that has received the individual call request. A group call system wherein a two-way call is made by forming a communication path between the two when a response operation signal is received. 5. The private branch exchange according to claim 1, wherein the communication terminal has a broadcast request function button for designating an external speaker group in which external speakers are registered in advance and requesting the private branch exchange to connect. Comprises a broadcast output destination storage unit that stores the external speaker group that is a broadcast output destination, and upon receiving the broadcast request signal from one communication terminal, searches the broadcast output destination storage unit according to the broadcast request. A group communication system, wherein a communication path for broadcasting is formed between at least one external speaker registered correspondingly and the communication terminal that has requested the broadcast. 6. The private branch exchange according to claim 5, wherein the private branch exchange transmits a call on a communication path between the communication terminal requesting the broadcast and the group call processing unit of the own group when forming the communication path for the broadcast. A group call system characterized in that only a call is disconnected. 7. The private terminal according to claim 1, wherein the communication terminal has a function button for requesting a call with another group to request the private automatic exchange to designate a group to participate in a simultaneous call in another group. When receiving a signal of a call request with the other group from one communication terminal, the exchange connects the communication terminal to the group call processing unit assigned to the group to which the call was requested and made a call request. A group call system characterized by participating in simultaneous group calls. 8. The personal handy phone system according to claim 1, wherein the communication terminal has a function of participating in a simultaneous call of a group, making a call, making a self-group call request, and responding to an incoming call. Specific PH by
A group call system comprising an S terminal. 9. The private branch exchange according to claim 1, wherein the private branch exchange directly sends a ringing tone within a call band to the communication terminal during a simultaneous call when the call is received. A group communication system, wherein a two-way communication is performed by forming a communication path by receiving a signal indicating that a response request function button is pressed from a communication terminal. 10. The private branch exchange according to claim 1, wherein the private branch exchange has one special number for a function executed in a simultaneous call by a group, and automatically responds to an incoming call from an outside line to store the special number and the special number. Subsequently, when a number code is received, a group call connection to the received number is performed, and when the received number is zero, a predetermined connection function is executed in each of the simultaneous communication connections. . 11. The private branch exchange according to claim 1, further comprising: an external signal interface for receiving an emergency call signal from outside in response to an emergency, and an external sound source interface for receiving an external sound source. A group call system, wherein, when a signal is input, the external sound source interface is connected to all of the group call processing units performing simultaneous calls to participate in simultaneous calls of all groups. 12. The private branch exchange according to claim 1, further comprising: an external signal interface for receiving a periodic report for scheduled broadcasting from the outside and an external sound source interface for receiving an external sound source. When a predetermined time notification signal is input, all of the simultaneous calls are connected and the external sound source interface is connected to the group call processing unit corresponding to any one of the predetermined groups. A group call system characterized by participating in simultaneous calls of groups. 13. The private branch exchange according to claim 3, wherein the private branch exchange is configured to perform a two-party call by forming a communication path from a group call processing unit of a communication terminal that has participated in the group call. A group call system characterized in that the connection is switched to a group call processing unit dedicated to a user.