JP2012049701A - Group call system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a group call system capable of performing a participation type group call without the number limit of participants.SOLUTION: The group call system comprises: a detection part 8 which detects signals of a participation type group call special number and a voice transmission/reception special number from each of radio terminals 4a-4n; a number-of-seats decision part 9 which decides whether the number of current participants exceeds the number of voice transmission/reception possible seats set in advance when this detection part 8 detects the signals of the participation type group call special number and the voice transmission/reception special number; a voice transmission/reception possible person decision part 10 which decides whether the participants are voice transmission/reception possible persons when the number-of-seats decision part 9 decides that the number of current participants does not exceed the number of voice transmission/reception possible seats set in advance; and a participating form decision part 11 which decides whether the participants can participate with voice reception only or can participate with voice transmission/reception based on a decision result of the number-of-seats decision part 9 and an organizer decision part 10 when the detection part 8 detects the signal of the participation type group call special number or the voice transmission/reception special number. Even if the number-of-seats decision part 9 decides that the number of current participants exceed the number of voice transmission/reception possible seats, the participants can participate with the voice reception only.

Description

  The present invention relates to a group call system capable of performing a participatory group call.

  A conventional group call system such as a local PHS radio system is composed of a control device that controls the entire system, a base station, a maintenance terminal device that performs settings, and a PHS radio terminal, and performs a participatory group call , Register the special number (hereinafter referred to as “participatory group call special number”) for performing group calls using the maintenance terminal device, and the number of people who can make group calls (number of seats) using the participatory group call special number. A configuration is known in which, when a PHS wireless terminal enters a participatory group call using a participatory group call special number, all participants can make a group call in a voice interactive manner (see, for example, Patent Document 1). ). On the other hand, in the case of simultaneous notification, a special number for carrying out a group call using a maintenance terminal device (hereinafter referred to as a general notification special number) and an extension number to be called by the simultaneous notification special number are registered, and the general notification special number is transmitted from the PHS wireless terminal. The group call is held by calling the extension registered in (1). In this simultaneous report, the organizer makes a one-way call from the organizer to the callee, and a two-way call is made when the callee is held down.

JP 2004-88211 A

  However, in the conventional group call system, when a participatory group call is made, only the number of registered seats can participate in the group call, and if the number of seats has already been reached, it will participate in the participatory group call. I couldn't.

  An object of the present invention is to provide a group call system that can perform a participation type group call with no limit on the number of participants.

  In order to achieve the above object, the present invention provides a group call system including a control device that detects a participation group call special number pressing signal from each wireless terminal and determines participation in a participation group call. In addition, a detection unit that detects a participation group call special number and a voice transmission / reception special number signal from each wireless terminal, and a participant preset when the detection unit detects a participation group call special number and a voice transmission / reception special number signal. A seat number determination unit for determining whether or not the number of seats capable of voice transmission / reception is exceeded, and whether the participant is a person capable of voice transmission / reception when the seat number determination unit does not exceed the preset number of voice transmission / reception possible seats When the voice transmission / reception enabled person determination unit and the detection unit detect a signal of a participation type group call special number or a voice transmission / reception special number, the seat number determination unit and the Characterized by providing the entry format determining unit for determining entry at possible entry or voice transmission and reception in only possible sound reception based on the determination result of the voice can be transmitted and received user determination unit.

  The present invention also provides a group call system having a control device that detects a press signal of a participation type group call special number from each wireless terminal and determines participation in the participation type group call. Detecting participatory group call special number pressing signal, and whether the detection unit detects a participatory group call special number pressing signal whether or not the number of seats that can be transmitted and received by the participant in advance is exceeded. The number of seats to be determined is determined, and when the number of seats determination unit determines that the number of seats that can be transmitted / received in advance is not exceeded, it is determined that it is possible to transmit / receive speech and the number of seats that can be transmitted / received is exceeded. It is characterized by providing an entry form determining unit that determines that entry is possible only when voice reception is possible.

  According to the group call system of the present invention, when the seat number determination unit determines that the preset number of voice transmittable / receiveable seats is not exceeded, the determination of the voice transmittable / receiveable person determination unit is determined to be a voice transmittable / receiveable person. The entry form determination unit is assumed to be able to send and receive voice and when the voice transmission / reception enabler determination part is not a person capable of sending and receiving voice, the entry form determination unit can only receive voice and decide to enter, but only voice reception can be entered. Even if the detection unit detects the voice transmission / reception special number signal and the number of seats determination unit does not exceed the preset number of voice transmission / reception available seats, the entry form determination unit can enter the voice transmission / reception. Can be changed. In addition, when the detection unit detects a press signal of the participation type group call special number, at the time, when the seat number determination unit determines that the preset number of voice transmittable / receiveable seats has been exceeded, the entry form determination unit described above Was decided to enter as only voice reception is possible, so it was not possible to participate in participatory group calls in the same state in the past, but now it is possible to enter if only voice reception is possible, Participate in group calls without restrictions.

  Further, according to the group call system of the present invention, when the seat number determination unit does not exceed the preset number of voice transmittable / receiveable seats, the entry form determination unit determines that it is possible to transmit / receive voice, but the seat number determination Even if the number of seats that can be sent and received in advance exceeds the number of seats that can be sent and received, the entry form determination unit decides that only voice reception is possible. It is possible to enter without being limited by the number of participants.

It is a block block diagram which shows the group call system by one embodiment of this invention. It is explanatory drawing which shows the setting table of the group call system shown in FIG. It is a flowchart which shows the processing operation at the time of the participation type group call by the group call system shown in FIG. It is explanatory drawing which shows the initial participation type group call state by the group call system shown in FIG. It is explanatory drawing which shows the participation type group call state after the change by the group call system shown in FIG. It is explanatory drawing of the voice synthesis | combination by a conference trunk in the audio | voice processing part of the group call system shown in FIG. It is another explanatory view of the voice synthesis by the conference trunk in the voice processing unit of the group call system shown in FIG. FIG. 10 is still another explanatory diagram of voice synthesis by the conference trunk in the voice processing unit of the group call system shown in FIG. 1. It is a block block diagram which shows the group call system by other embodiment of this invention. It is explanatory drawing which shows the structural example of the setting table of the group call system shown in FIG. It is a flowchart which shows the process sequence in the group call system shown in FIG.

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

  FIG. 1 is a block diagram showing the overall configuration of a group call system according to an embodiment of the present invention. The group call system includes a control device 1 that performs all the controls in the system, and the control device 1. It is composed of a connected base station 2, a maintenance terminal device 3 for performing various settings in the control device 1 including settings for participatory group calls, and a plurality of wireless terminals 4a to 4n.

  The control device 1 includes a transmission / reception unit 5 that performs transmission / reception with the base station 2, an audio processing unit 6 that performs processing of audio signals of the transmission / reception unit 5, and items related to the participation type group call in advance from the maintenance terminal device 3. , A detection unit 8 for detecting a press signal of a participation type group call special number and a voice transmission / reception special number from each of the wireless terminals 4a to 4n, and a detection unit 8 for participating group call special number and voice transmission / reception special number. The seat number determination unit 9 that determines whether or not the current participant exceeds the preset number of voice transmittable / receiveable seats when a press signal is detected, and the voice transmittable / seatable seat preset by the seat number determination unit 9 When it is determined that the number does not exceed the number, the voice transmitter / receiver determination unit 10 that determines whether the participant is a voice transmission / reception enabled person registered in the setting table 7 and the detection unit 8 When a pressing signal of a loop call special number or a voice transmission / reception special number is detected, whether entry is possible only for voice reception or entry where voice transmission / reception is possible based on the determination result of the seat number determination unit 9 or the voice transmitter / receiver determination unit 10 It has an entry form determination unit 11 to be determined, a storage unit 12 that stores a program related to a participatory group call, and a control unit 13 that controls each unit described above according to the program.

  In the setting table 7 shown in FIG. 2, predetermined items are registered in advance through an initial setting unit (not shown). For example, when participating in a participation type group call as shown in FIG. Participating group call special number 14 to be set, the number of seats that can be transmitted and received by two-way audio in the participatory group call special number 14 is set, and the number of seats that can be transmitted / received is 15 Each item. When the participation group call special number 14 is set to “90”, the number of voice transmittable / receiveable seats 15 is “32”, and the voice transmittable / receiveable person 16 has the radio numbers “1, 6, 6” assigned to the radio terminals 4a to 4n, respectively. 7 "is registered.

  When a participant group call is entered using the participatory group call special number 14, if the voice transmission / reception enabler 16 is registered in advance, the wireless terminal is entered in a state where voice transmission / reception is possible. In the wireless terminals of other entrants, entry is made in a state where only voice reception is possible. However, if an entrant other than the voice transmission / reception enabled person 16 wants to enter by voice transmission / reception at a certain point, it is changed by pressing “99” of the voice transmission / reception special number 17 in the setting table 7 as will be described in detail later. be able to. Thereafter, when returning from an entry allowing voice transmission / reception to an entry allowing only voice reception, the voice transmission special number 17 “99” can be pressed. In addition, when returning from the entry which can carry out audio | voice transmission / reception to the entry which can carry out only audio reception, you may provide another number instead of "99" of the audio transmission / reception special number 17.

  The entry form determination unit 11 shown in FIG. 1 can only receive a voice when the detection unit 8 detects a press signal of the participation type group call special number 14 and the preset number of voice transmission / reception available seats 15 is exceeded. On the other hand, if the number of seats capable of voice transmission / reception does not exceed 15, if it is a voice transmitter / receiver, it is determined that the voice transmission / reception is possible. When the detection unit 8 detects a press signal of the voice transmission / reception special number 17 after determining that the voice reception is possible, the voice transmission / reception special number 17 is detected. If the detection unit 8 detects a voice transmission / reception special number 17 pressing signal after it has been decided that only voice reception is possible, the voice is transmitted if the preset number of voice transmission / reception available seats exceeds 15. It is determined that the entry is possible only for communication, and when the detection unit 8 detects the pressing signal for the voice transmission / reception special number 17 again after detecting the pressing signal for the voice transmission / reception special number 17, the entry is returned to the entry where only the voice reception is possible. decide.

FIG. 3 is a flowchart showing a basic processing procedure during a participatory group call.
Now, the detection unit 8 of the control device 1 monitors the pressing signal of the participation group call special number “90” by the wireless terminals 4a to 4n under the group in step S1. Here, it is assumed that the wireless terminal 4a registered as a voice transceivable person enters the participation group call by pressing the participation group call special number “90”. Then, since the detection unit 8 of the control device 1 monitors the press signal of the participation type group call special number “90”, the detection signal of the participation type group call special number “90” is transmitted through the base station 2 and the control device 1. Then, the seat number determination unit 9 determines whether or not the number of seats that can be transmitted / received voice 15 has reached the preset value “32” while referring to the setting table 7 in step S2. Here, the wireless terminal 4a registered as a person who can transmit and receive voice is the first entry, and the seat number determination unit 9 assigns the wireless number of the wireless terminal 4a to the seat number. Assign to 1. At this point, the other seats are empty.

  Next, the voice transmitter / receiver determination unit 10 determines whether or not the wireless terminal 4a detected by the detection unit 8 is registered in the preset voice transmitter / receiver 16 with reference to the setting table 7 in step S3, and the result. Since the voice transmission / reception enabled person 16 is registered in advance, the participation mode determination unit 11 determines that the wireless terminal 4a that has notified the participation type group call special number “90” in step S4 is an entry capable of voice transmission / reception. . In this way, the wireless terminal 4a can participate by the control device 1 through a mutual call in which voice can be transmitted and received in the participation type group call.

  Next, it is assumed that the wireless terminal 4b that is not registered as a voice transceivable person enters the participation group call by pressing the participation group call special number “90”. Then, since the detection unit 8 of the control device 1 monitors the pressing signal of the participation type group call special number “90”, the detection unit 8 detects the pressing signal of the participation type group call special number “90” from the wireless terminal 4b, Further, the seat number determination unit 9 determines whether or not the number of seats that can be transmitted and received by voice 15 reaches “32” set in advance with reference to the setting table 7 in step S2. Here, since the number of seats for which voice transmission / reception is possible has not yet reached “32” set in advance, the seat number determination unit 9 assigns the wireless number of this wireless terminal 4b to the seat number. Assign to 2. Subsequently, when the voice transmitter / receiver determination unit 10 determines whether or not the voice transmitter / receiver is registered in step S3, the voice transmitter / receiver determination unit 10 determines that it is not registered and does not correspond, and the participation mode determination unit 11 determines that the wireless terminal 4b has notified in step S5. Is determined to be an entry that only allows voice reception. However, the entry that allows only voice reception in step S5 can change the entry form as described later.

  After that, even when the wireless terminal 4c not registered as a voice transceivable person performs the entry process to the participation type group call, the same process as the wireless terminal 4b is performed, and the entry that can only receive the voice is performed in step S5. decide. Subsequently, when the wireless terminal 4f registered as a voice transceivable person presses the participation group call special number “90” and performs the entry process to the participation group call, the same process as the wireless terminal 4a is performed, In step S4, it is determined that the voice transmission / reception is possible.

  However, when the number of entries increases and the number of seats 15 that can be transmitted / received in voice reaches the set number “32” in step S2, the seat number determination unit 9 determines that the number of seats that can be transmitted / received voice 15 has already reached the set number “32”. Since it determines, the participation form determination part 11 determines with the participation that the radio | wireless terminal can only receive audio | voice by step S6. In step S6, when the number of seats that can be transmitted / received has reached the set number “32”, the entry to the participation type group call itself is not rejected as in the conventional case, and thereafter the transmission / reception of the speech is possible. It is an entry that can only receive voices that cannot be changed to a new entry, and can receive voices without restriction on the number of people.

  As described above, when it is determined in step S5 that only voice reception is possible, the entry mode can be changed unlike the determination in step S6. That is, after step S5, if the owner of the wireless terminal 4b wants to speak by changing from entry that can only receive voice to entry that can transmit and receive voice, press the voice transmission special number "99" of the wireless terminal 4b. . Then, the detection unit 8 detects a press signal of the voice transmission / reception special number “99” in step S7. Upon receiving this detection, the seat number determination unit 9 determines whether or not the set number “32” of the number of seats that can be transmitted / received by voice 15 has been reached at the time of detection while referring to the setting table 7 in step S8. If there is a vacancy, the participation form determination unit 11 changes the wireless terminal 4b notified in step S9 to entry that allows voice transmission / reception. Thereafter, the detection unit 8 enters a waiting state for monitoring the release of pressing the voice transmission / reception special number “99” in step S10.

  Therefore, at the beginning of the participatory group call, even if only the wireless terminal 4a registered as a person capable of voice transmission / reception as shown in FIG. In step S9, the participation mode of the wireless terminal 4b whose voice transmission / reception special number “99” has been pressed is changed in step S9, and this wireless terminal 4b can also participate in the participation type group call through the mutual call capable of transmitting / receiving the voice. Become. Such a change enables a mutual call in which voice can be transmitted and received in the same manner in other wireless terminals that are determined to be able to receive voice only in step S5.

  After that, when returning the wireless terminal 4b that has been able to perform voice transmission / reception in step S9 to the entry where only voice reception is possible, when the voice transmission / reception special number “99” is pressed, the detection unit 8 performs this voice transmission / reception in step S10. A pressing signal of the special number “99” is detected. Upon receipt of this detection, the seat number determination unit 9 determines the corresponding seat No. from the set number “32” of the number of seats that can be transmitted and received at the time of detection. And the participation form determination unit 11 changes the wireless terminal 4b notified in step S5 to entry that only allows voice reception. As a result of this processing, the seat No. It is possible to assign other wireless terminals to.

  In this way, in a participatory group call, if the wireless terminal that has been able to receive only voice reception in step S5 is within the set number “32” of the number of seats that can be transmitted / received in step S8, voice is transmitted in step S9. It is possible to change from entry where only reception is possible to entry where voice transmission is possible.

6 to 8 are explanatory diagrams of voice synthesis by the conference trunk in the voice processing unit 6.
As described with reference to the flowchart of FIG. 3, it is assumed that the wireless terminal 4a registered in advance as a person capable of voice transmission / reception enters the participation type group call. Here, as shown in FIG. 6, the PS number “1” of the radio number 4 a is assigned to the seat number “1” of the registered number “32” in the number of seats 15 that can be transmitted and received as shown in FIG.

  Thereafter, when the wireless terminal 4b, the wireless terminal 4c, and then the wireless terminal 4f enter the participation type group call in this order as shown in FIG. 7, the wireless terminal 4b and the wireless terminal 4c receive voice as in step S5 shown in FIG. In the case of entry where only voice reception is possible, only one seat of the conference trunk is used regardless of the number of people, and there is no need to transmit own voice, so seat number "2" The PS number “For monitoring (silent)” is assigned.

  On the other hand, the wireless terminal 4f is a person who can register voice transmission / reception in advance and enters the voice transmission / reception at step S6 shown in FIG. A PS number “6” of 4f is assigned.

  The conference trunks synthesize and output each voice input, but the wireless terminal 4a with seat number "1" is an entry that can transmit and receive voice, and it is necessary to output its own voice to other participants. Then, it is set as an output obtained by synthesizing “+6 for monitoring” with respect to the voice input. On the other hand, for the voice input of the wireless terminal 4b and the wireless terminal 4c with the seat number “2”, only the voice reception is possible and there is no need to transmit own voice, so that the monitor (silence) is used. Used to output “1 + 6” speech synthesis. The wireless terminal 4f is also an entry capable of voice transmission / reception, and the voice input is a voice synthesized output of “monitoring +1”.

  After that, when the wireless terminal 4b changes from entry capable of only voice reception to entry capable of voice transmission / reception in step S9 in FIG. 3, as shown in FIG. 8, the wireless terminal 4c does not change due to entry only capable of voice reception. The PS number “for monitoring (silent)” of the seat number “2” is still assigned, but since the wireless terminal 4b is an entry capable of voice transmission / reception, the PS number “2” of the wireless number 4b is added to the seat number “4”. "Is newly assigned.

  Along with this, the conference trunk uses the voice input of the radio terminal 4a with the seat number “1” as the voice synthesized output of “monitoring + 2 + 6” and the voice input of the radio terminal 4c with the seat number “2”. Is a speech synthesis output of “1 + 2 + 6”. Further, it is assumed that the voice input of the wireless terminal 4f is an output obtained by synthesizing “monitoring + 1 + 2”. Furthermore, the voice input of the changed wireless terminal 4b is set to an output obtained by synthesizing “monitoring + 1 + 6”.

  As described above, the present group call system includes a detection unit 8 that detects a participation group call special number and a voice transmission / reception special number signal from each of the wireless terminals 4a to 4n, and the detection unit 8 uses the participation group call special number and voice transmission / reception. A seat number determination unit 9 that determines whether or not the current number of participants exceeds the preset number of voice transmission / reception possible when a special signal is detected, and a voice transmission / reception seat preset by the seat number determination unit 9 When it is determined that the number is not exceeded, the voice transmission / reception enabler determination unit 10 that determines whether the participant is a voice transmission / reception enabled person, and the detection unit 8 detects a signal of a participation type group call special number or a voice transmission / reception special number An entry form determination unit 11 that determines whether entry is possible only for voice reception or entry is possible for voice transmission / reception based on the determination results of the seat number determination unit 9 and the organizer determination unit 10 It is constructed by.

  According to the group call system having such a configuration, when the seat number determining unit 9 determines that the preset number of voice transmittable / receiveable seats has not been exceeded, the determination of the voice transmittable / receiveable person determining unit 10 is a voice transmittable / receiveable person. If there is, the entry form determination unit 11 is an entry that can transmit and receive voice, and when the voice transmission / reception enabler determination unit 10 is not a person capable of transmitting and receiving voices, the entry form determination unit 11 can only receive a voice and determine entry. Even after only voice reception is possible and entry is determined, when the detection unit 8 detects the voice transmission / reception special number signal and the seat number determination unit 9 does not exceed the preset number of voice transmission / reception available seats, The determination unit 11 can be changed to entry that allows voice transmission / reception.

  In addition, when the detection unit 8 detects a press signal for a participation group call special number, the group call system determines that the seat number determination unit 9 has exceeded the preset number of voice transmittable / receiveable seats at that time. Since the entry form determination unit 11 described above is configured so as to be determined as an entry that can only receive voice, it has been impossible to enter a participation group call in the same state in the past. You will be able to enter, and you can participate without any restrictions.

  In addition to the above-described configuration, this group call system can be used only for voice reception, and after entering the voice transmission / reception special number pressing signal detection to change to entry that allows voice transmission / reception, the detection unit 8 is configured to receive the voice transmission / reception special number. When the signal is detected again, the entry form determination unit 11 is configured to return to the entry that can only receive voice, so in addition to the above effects, only voice reception is possible when voice transmission is possible and there is no need to enter. In this way, it is possible to make a state where a new wireless terminal can participate in voice transmission / reception by forming a vacant seat in the voice transmission / reception enabled seat.

  By the way, in this type of group call system, a general call special number is usually registered separately from a participatory group call special number, but it is also used as a broadcast special number by combining the characteristics of the participatory group call in this embodiment. can do. For example, “91” of the participatory group call special number 14 in FIG. 2 can be used as the simultaneous notification special number. As can be understood from the above description, even when “91” of the participation type group call special number 14 of FIG. 2 is used, the group call can be held by calling the extension from the wireless terminal of the number “8” registered in advance. This group call is a one-way call from the organizer using the wireless terminal with the number “8” to the called party as in the case of simultaneous notification. However, when pressing of the special number at the wireless terminal on the called party side shown in step S7 in FIG. 3 is detected, a two-way communication is possible, and the functions required for simultaneous notification can be satisfied. Therefore, the participation type group call special number and the simultaneous notification special number can be managed by the setting table 7 at the same position, and the management can be simplified.

FIG. 9 is a block diagram showing a group call system according to another embodiment of the present invention.
In the previous embodiment, when it is determined in step S2 that the seat number determination unit 9 does not exceed the preset number of voice transmittable / receiveable seats, whether the participant is a voice transmittable / receiver in the setting table 7 in step S3. However, in this embodiment, the voice transmission / reception capable person determination unit 10 is omitted.

  The maintenance terminal device 3 includes a transmission / reception unit 5 that performs transmission / reception with the base station 2, a voice processing unit 6 that performs processing of a voice signal of the transmission / reception unit 5, and an initial setting that performs initial settings for a participatory group call. Unit (not shown), a setting table 7 in which items related to the participation type group call are registered in advance by the initial setting unit, a storage unit 12 storing a program related to the participation type group call, and control for controlling each unit according to the program Although it is the same in that it has a unit 13, a detection unit 8 that detects a pressing signal of a participation group call special number from each of the wireless terminals 4 a to 4 n in accordance with the exclusion of the voice transmission / reception capable person determination unit 10, The number of seats that can be transmitted and received by the participant at the present time in advance while referring to the setting table 7 when the detection unit 8 detects a press signal for the participation type group call special number. The number of seats determination unit 9 that determines whether or not the number of seats is exceeded, and when the number of seats determination unit 9 determines that the number of seats that can be transmitted and received in advance is not exceeded, it is determined whether or not the participant can participate in voice transmission and reception. In addition, when the seat number determination unit 9 determines that the number of seats that can be transmitted / received in advance has been exceeded, the participation form determination unit 11 that determines that the participant can only receive voices is used.

  In the setting table 7 shown in FIG. 9, predetermined items are registered in advance through the maintenance terminal device 3. For example, as shown in FIG. It has a group call special number 14 and a voice transmission / reception capable seat number 15 that sets the number of bidirectional call transmission / reception that can be performed by the participation type group call special number 14. When the participation group call special number 14 is set to “90”, the number of seats that can be transmitted / received 15 is set to “32”.

Next, a processing procedure in the above-described group call system will be described using the flowchart shown in FIG.
Now, the detection unit 8 of the control device 1 monitors the pressing signal of the participation group call special number “90” by the wireless terminals 4a to 4n under the group in step S1. Here, it is assumed that the wireless terminal 4a enters the participation group call by pressing the participation group call special number “90”. Then, the detecting unit 8 detects a pressing signal of the participation type group call special number “90”, and the seat number determining unit 9 refers to the setting table 7 in step S2 and the number 15 of voice-transmittable seats is set in advance. It is determined whether or not “32” is reached. Here, the wireless terminal 4a is the first entry, and the seat number determination unit 9 assigns the PHS number of the wireless terminal 4a to the seat number. 1, the participation mode determination unit 11 determines that the wireless terminal 4 a that has notified the participation type group call special number in step S <b> 4 can participate in voice transmission and reception.

  After repeating the same processing, it is assumed that another wireless terminal 4n enters the participation group call by pressing the participation group call special number “90”. Then, since the detection unit 8 of the control device 1 monitors the pressing signal of the participation type group call special number “90”, the detection unit 8 detects the notification of pressing the participation type group call special number “90” from the wireless terminal 4b, Further, the seat number determination unit 9 determines whether or not the number of seats that can be transmitted and received by voice 15 reaches “32” set in advance with reference to the setting table 7 in step S2. Here, when the seat number determination unit 9 determines that the number of seats that can be transmitted / received by voice 15 has reached the set number “32”, the participation mode determination unit 11 enters the wireless terminal 4n that can only receive voice in step S6. And decide. The same applies when the wireless terminal 4n is entered after the wireless terminal 4n. In step S6, the participation form determining unit 11 determines that the wireless terminal can only receive voice.

  In the above-described group call system, a detection unit 8 that detects a press signal of a participation type group call special number from each of the wireless terminals 4a to 4n, and when the detection unit 8 detects a press signal of the participation type group call special number, The seat number determination unit 9 for determining whether or not the number of participants exceeds the preset number of voice transmittable / receiveable seats, and the seat number determination unit 9 determines that the preset number of voice transmittable / receiveable seats is not exceeded Since it has the entry form determination unit 11 that determines that it is possible to receive and receive voice and when it is determined that the number of seats that can transmit and receive voice is exceeded, only the voice reception is possible. If the number determination unit 9 does not exceed the preset number of voice transmissible seats, the entry form determination unit 11 determines that the participation is possible for voice transmission / reception, but the seat number determination unit 9 sets the voice transmission preset. Even beyond the signal can seats, entry format determining unit 11 is the entry in the only possible sound reception. Conventionally, entry cannot be made when the number of seats capable of voice transmission / reception is exceeded, but even in this embodiment, entry is possible only by voice reception, and participants can join without being limited by the number of people.

  The group call system according to the present invention can be applied not only to the configuration shown in FIG. 1 but also to other configurations.

DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Base station 3 Maintenance terminal apparatus 4a-4n Wireless terminal 5 Transmission / reception part 6 Voice processing part 7 Setting table 8 Detection part 9 Seat number determination part 10 Voice transmitter / receiver determination part 11 Entry form determination part 12 Storage part 13 Control part 14 Participation type group call special number 15 Number of seats available for voice transmission / reception 16

Claims (2)

  In a group call system having a control device that detects a press signal of a participatory group call special number from each wireless terminal and determines participation in the participatory group call, the control device receives the participation group call from each wireless terminal. A detection unit that detects a special number and a voice transmission / reception special number signal, and whether or not the number of seats that can be transmitted / received by a participant is exceeded when the detection unit detects a participation type group call special number and a voice transmission / reception special number signal. The number-of-seats determination unit for determining whether or not the participant is a person capable of voice transmission / reception when the number-of-seats determination unit does not exceed the preset number of seats for voice transmission / reception, When the detection unit detects a participation group call special number or a voice transmission / reception special number signal, the determination result of the seat number determination unit and the voice transmission / reception enabler determination unit Group call system, characterized in that a and entry format determining unit for determining entry at possible entry or voice transmission and reception in the only possible audio received Zui.   In a group call system having a control device that detects a press signal of a participatory group call special number from each wireless terminal and determines participation in the participatory group call, the control device receives the participation group call from each wireless terminal. A detection unit for detecting a special number pressing signal, and a seat number determination for determining whether or not a participant has exceeded a preset number of voice transmitting and receiving seats when the detecting unit detects a participation group call special number pressing signal. And when the seat number determination unit determines that it has not exceeded the preset number of seats capable of voice transmission / reception, and has determined that the entry is possible for voice transmission / reception and has exceeded the number of seats capable of voice transmission / reception. A group call system, characterized in that an entry form determination unit that decides entry that allows only voice reception is provided.

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