JP2007243325A - Speech restriction apparatus, speech restriction method, and exchange - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of impartially connecting a speech to many more subscribers in a time of disaster. <P>SOLUTION: A speech restriction apparatus for restricting a speech inside an area is characterized in to include: a means for storing a limit value of the number of speech times set inside the area and a history including the number of speech times applied to terminals making a speech inside the area; a determination means for discriminating the approval/disapproval of speech connection to a call on the basis of the limit value and the history on the occurrence of the call from the inside of the area; and a communication means for informing an exchange in the area about a determination result. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to call regulation in a stricken area, and more particularly to call regulation that suppresses congestion due to a call to a disaster occurrence area and a transmission from a disaster occurrence area.

  Conventionally, when a disaster occurs, call congestion occurs due to concentration of calls for confirmation of safety to residents in the disaster area or calls from residents in the disaster area. In order to prevent the exchange from becoming punctured due to this excessive call, it becomes a call connection restriction state (a state where it is harder to connect than usual), but from the psychology of `` anxiety because it can not be confirmed '', the congestion state will settle down Since there are many users who repeatedly make calls until they are connected without waiting, it may take time to calm down the congestion state.

  In order to prevent this inconvenience, conventionally, a call restriction to a disaster area is performed.

  In Patent Document 1, as a call restriction for restricting a call when a telephone line is congested, the call is disconnected after a predetermined call restriction time elapses from the start of the call.

Also, in the event of a disaster, a subscriber number that should be prioritized such as a hospital or administrative organization is determined in advance, and in the event of a disaster, the priority subscriber number is preferentially connected, and the reason for restriction is notified to the subscriber whose call is restricted. There is a method to do (Patent Document 2).
JP 2001-186254 A JP-A-9-312692

  In the background art described above, there are two methods for limiting the call time from the call start time to a predetermined time. If these are all set to the same time limit, there may be inconvenience that the necessary requirements are not communicated if the time limit is short, and call congestion may increase due to unnecessary calls if the time limit is long. There is sex.

  In addition, in the background art described above, the method of predetermining the priority subscribers may cause inconvenience for the safety confirmation of general subscribers, which is the majority of calls, and is not a fair call restriction. .

  Accordingly, one of the objects of the present invention is to provide a method of connecting a call fairly to more subscribers in the event of a disaster.

  The present invention is not limited to the above-mentioned object, and is a result derived from each configuration shown in the best mode for carrying out the invention described later, and has an effect that cannot be obtained by conventional techniques. It can be positioned as one of the purposes.

(1) In the present invention, there is provided a call restriction device for restricting a call from within an area, wherein the limit value of the number of calls set for the area and the number of calls to a terminal that has made a call within the area are set. Means for storing a history including, a judgment means for judging whether or not a call connection is permitted or not based on the limit value and the history when a call is generated from within the area, and a result of the judgment within the area. A call control device characterized by comprising communication means for notifying an exchange is used.
(2) In the present invention, there is provided a call restriction method for restricting a call from within an area, the limit value of the number of calls set for the area, and the number of calls to a terminal that has made a call within the area. Storing a history including: a step of determining whether call connection is permitted or not based on the limit value and the history when a call is generated from within the area; and calling based on the determination result A call control method comprising connecting steps is used.
(3) In the present invention, there is provided a call restriction device for restricting a call from outside the area to the area, and a limit value of the number of calls set for the area and a terminal that has made a call within the area Means for storing a history including the number of calls, and a determination unit for determining whether to allow or reject call connection based on the limit value and the history when a call is generated from outside the area to the area; A call control device comprising a communication means for notifying the exchange outside the area of the determination result is used.
(4) In the present invention, there is provided a call restriction device for restricting a call from within an area and a call from outside the area to the area, the call frequency limit value set for the area, Means for storing a history including the number of calls made to a terminal that has made a call within a predetermined time; and when a call is generated from within the area or from outside the area to the area, based on the limit value and the history, Use of a call control device comprising: determination means for determining whether call connection is permitted or not permitted for a call; and communication means for notifying the history and determination results to an exchange in the area and outside the area. .
(5) In addition, when the exchange according to claim 4 receives a notification of permission of the call connection for the call from the call restriction device when a call is generated from the inside or outside the area to the area, A connection means for connecting a caller terminal to a callee terminal; a notification of the history of the callee terminal having a call count of one or more times within a predetermined time from the call restriction device; When the notification is received, an exchange is used, which comprises notification means for notifying the caller terminal that the call has already been made within the predetermined time.

  In the event of a disaster, call connections between many subscribers can be ensured, the congestion regulation state in the exchange converges quickly, and the normal call connection state can be restored.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Example 1
In the first embodiment, it is assumed that the limit value of the number of calls in the stricken area A101 after the occurrence of a disaster is set to one, and the call restriction for outgoing calls from the stricken area 101 is performed.

  FIG. 1 shows a network configuration for call restriction in the first embodiment.

In Figure 1, 101 is affected areas area A, 102 is the exchange A, 102a replacement device A, 103 is the announcement device (notification means) A, 104 ₁ base station _A 1, 104 ₂ is the base station _A 2, 104 _n is a base station A _n , 105 ₁ is a terminal A ₁ , 105 ₂ is a terminal A ₂ , 106 is a call control device, 107 is an area B, 108 is a switching device B, 108a is a switching device B, 109 is an announcement device (notification Means) B and 110 ₁ are the base station B ₁ , 110 ₂ is the base station B ₂ , 110 _n is the base station B _n , 111 ₁ is the terminal B ₁ , and 111 ₂ is the terminal B ₂ .

In the first embodiment, when a disaster occurs, the terminal A ₁ 105 ₁ in the disaster area A101 sends a call to the terminal A ₂ 105 ₂ in the disaster area A101.

  First, call regulation for calls made from the disaster area 101 will be described.

  FIG. 2 shows a call restriction processing flow for calls made from the disaster area in the first embodiment.

In FIG. 2, S101 is the start of call restriction, S102 is a step in which the call restriction device 106 determines the occurrence of a disaster, S120 is a normal connection processing step, and S103 is a call restriction device 106 that makes a call restriction due to a disaster to an exchange in each area. Step S104 is a step in which the switch A102 in the area A101 starts the call restriction, S104 is a step in which the caller terminal A ₁ 105 _{1 in the} stricken area 101 sends, and S105 is a step in which the stricken area switch A102 sends the call After inquiring whether the terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ can make a call, the call control device 106 after the disaster occurs in the disaster area A101 of the source terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ A step of determining whether the number of calls exceeds the limit value, S106 is a disaster area exchange A 02 instructs the announcement device A103, the step of notifying the announcement information to the originating terminal _A 1 105 _1, step S107 of connecting the source terminal _A 1 105 ₁ to the destination terminal _A 2 105 _2, the S108 A step in which the call is terminated, S109 is a step of registering the call history of the call source terminal A ₁ 105 ₁ and the call destination terminal A ₂ 105 _{2 in} the call restriction device 106, and S110 is a step in which the call restriction device 106 terminates the call congestion. Step S111 is a step in which the call restriction device 106 cancels the call restriction.

FIG. 3 shows a configuration diagram of the exchange A102 in the first embodiment.
In FIG. 3, the same components as those in FIG.
Reference numeral 102a denotes a switching apparatus A, 102b denotes a computer (including storage means and selection means), 102c denotes storage means, 102d denotes instruction means, and 102e denotes a switch (connection means).

  When a disaster occurs in the area 101, the exchange A102 receives a notification for performing call restriction in the disaster area 101 from the call restriction device 106 in FIG. 1, and stores it in the storage means 102c (processing flow S103 in FIG. 2).

  FIG. 4 is a configuration diagram of the call restriction device 106 according to the first embodiment.

  In FIG. 4, 106a indicates a communication means, 106b indicates a storage means, and 106c indicates a determination means.

When a call is made from the terminal A ₁ 105 ₁ in the area A101 to the destination terminal A ₂ 105 ₂ (flow S104 in FIG. 2), the exchange A102, based on the call restriction notification stored in the storage unit 102c, The communication means 102c inquires of the call restriction device 106 in FIG. 1 whether or not the connection between the caller terminal A ₁ 105 ₁ and the call receiver terminal A ₂ 105 ₂ is possible.

The call restriction device 106 stores the current area information and the call history information of the terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 _{2 in} the storage means 106b, and the determination means 106c stores the stored information. Whether the calling terminal A ₁ 105 ₁ and the receiving terminal A ₂ 105 ₂ exceed the limit value of the number of calls set in advance according to the number of calls made in the disaster area A101 after the disaster occurrence time using the information It is determined whether or not (flow S105 in FIG. 2).

For example, when the limit value of the number of calls is one, if at least one of the source terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ is talking once after the disaster occurs, the connection is impossible. Judgment is made, and if any of the terminals is not making a call after the disaster occurs, it is judged that connection is possible.

Then, the exchange A102 is notified of whether or not the connection between the terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ is possible.

When the exchange A102 receives the notification from the call restriction device 106 by the communication means 102c, the instruction means 102d, when the notification is acceptable, from the source terminal A ₁ 105 ₁ to the destination terminal A ₂ 105 ₂ is instructed to the connection means 102e. The connection means 102e executes call connection from the caller terminal A ₁ 105 ₁ to the call receiver terminal A ₂ 105 ₂ .

When the notification is impossible, the command means 102d instructs the announcement device (notification means) 103 to notify the caller terminal A ₁ 105 ₁ that the connection cannot be established due to a call restriction during a disaster.

Processing in the case where a call from the caller terminal A ₁ 105 ₁ to the call receiver terminal A ₂ 105 ₂ in the disaster area 101 is permitted will be described in detail.

FIG. 5 shows a sequence in which a call is permitted to the terminal A ₁ 105 ₁ in the disaster area A101.

  In FIG. 5, the same components as those in FIG. 1 are given the same numbers, and the processing order is shown in <>.

  When a disaster occurs, the call restriction is started for the disaster area 101, and the exchange A102 stores the call restriction notification of the disaster area 101 according to the notification <1> of the call restriction device 106 and starts the call restriction < 2>.

The terminal A ₁ 105 ₁ in the stricken area A101 makes a call to the destination terminal A ₂ 105 _{2 of the} other party who wants to talk <3>.

The exchange A102 makes an inquiry to the call restriction device 106 and inquires whether or not the call origination terminal A ₁ 105 ₁ and the call destination terminal A ₂ 105 _{2 can establish} a call connection <4>. Based on the current area information and call history stored in the storage means 106b, the call restriction device 106 has the caller terminal A ₁ 105 ₁ and the call receiver terminal A ₂ 105 _{2 located} in the disaster area A101, After the occurrence of the disaster, it is determined that there is no call history with the terminal in the disaster area A101 <5>, and a reply indicating that the call can be connected is returned to the exchange A102 <6>.

The exchange A102 instructs the connection means to make a call connection <7>, and calls the receiving terminal A ₂ 105 ₂ <8>.

A call between source terminal A ₁ 105 ₁ and destination terminal A ₂ 105 ₂ is performed <9>. When the call of the caller terminal A ₁ 105 ₁ ends and the call is disconnected, the call with the call receiver terminal A ₂ 105 ₂ is disconnected through the exchange A102 <10>.

The exchange A102 requests the call restriction device 107 to update the call registration <11>, and the call histories of the call source terminal A ₁ 105 ₁ and the call destination terminal A ₂ 105 _{2 in} the call restriction device 106 are updated and sent simultaneously. Since the original terminal A ₁ 105 ₁ and the called terminal A ₂ 105 ₂ made a call after the disaster occurred, the safety confirmation information is stored <12>.

  The above-mentioned call restriction is a case of a flow that passes through S101, S102, S103, S104, S105, S107, S108, S109, and S110 in FIG.

Next, a description will be given of processing when the caller terminal A ₁ 105 ₁ in the stricken area calls once after a disaster and then calls the callee terminal A ₂ 105 ₂ again and the call is not permitted.

FIG. 6 shows a sequence in which a call is not permitted to the terminal A ₁ 105 ₁ in the disaster area A101.

  In FIG. 6, the same components as those in FIG. 1 are given the same numbers, and the processing order is shown in <>.

The terminal A ₁ 105 ₁ in the stricken area A101 sends a call to the destination terminal A ₂ 105 _{2 of the} other party who wants to make a call <1>. The exchange A102 inquires of the call restriction device 106 whether or not the call connection of the calling terminal A ₁ 105 ₁ and the called terminal A ₂ 105 ₂ is possible <2>. The call restriction device 106 determines that the call connection is impossible because both the terminals A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ have made a call once in the disaster area A101 after the occurrence of the disaster <3 > Reply to the exchange A102 that the call cannot be connected <4>. The exchange A102 instructs the announcement device (notification means) A103 to make an announcement at the time of disaster based on the call rejection <5>.

It is notified that the connection is not permitted because the limit value of the number of calls has been exceeded, and that the destination terminal A ₂ 105 ₂ has made a call after the disaster has occurred and thus safety has been confirmed <6>.

In this case, since the call was not established, the call history registration of the terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ is not updated.

  The above-mentioned call restriction is the case of the flow through S101, S102, S103, S104, S105, S106, and S110 in FIG.

  FIG. 7 shows a sequence for canceling the call restriction when there is no call congestion due to the occurrence of a disaster.

  7, the same components as those in FIG. 1 are given the same numbers, and the processing order is indicated in <>.

  The call restriction device 106 monitors the call congestion state in the exchange A102 in the disaster area A101 at regular intervals <1>. When there is no call congestion in the exchange A102 <2>, the call restriction device 106 grasps information on the end of the call congestion state <3>.

  The call restriction device 106 determines that the call congestion in the disaster-stricken area A101 has ended, and the call connection after the occurrence of the disaster is disapproved to the terminal in the disaster-stricken area A101 that is subject to call restriction. The call restriction is canceled in the order from the earliest time, the registered contents of the storage means 106b are updated <4>, and the exchange of each area is notified of the release of the call restriction <5>.

  The exchange in each area clears the call restriction information due to the disaster stored in the storage means, cancels the call restriction, and returns to the normal exchange operation (not shown).

  The above-mentioned call restriction shows a part of a flow that passes through S110 and S111 in FIG.

In the above description, both the source terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 ₂ are in the disaster area A101, but the source terminal A ₁ 105 ₁ is in the disaster area A101 and the destination Call control can be performed in the same manner as described above even when the terminal B ₁ is located in the area B 107 outside the disaster area.

  In the above description, the call frequency limit value is set to one time from the time of the disaster until the congestion is ended. However, the call control device stores a plurality of call frequency limit values in advance, and switches A102 in the disaster area. The limit value can also be selected according to the congestion state.

  For example, immediately after the occurrence of a disaster, if the outgoing call is occurring 5 times or more of the processing capacity of the exchange, select 1 as the limit value of the number of calls, and the outgoing call will settle to less than 5 times. The limit value can be selected twice.

  In the above, the period of counting the number of calls is from when the call restriction is started after the disaster occurs until the call restriction is released, but it is reset at an appropriate period and the number of new calls is counted again. You can also restrict calls.

  For example, the limit value of the number of calls is set to 1 and the reset cycle is set to 1 day, so that even if a call is made once after a disaster occurs, the call can be made once again on the next day.

(Example 2)
In the second embodiment, it is assumed that the limit value of the number of calls in the stricken area A101 after the occurrence of a disaster is set to one, and call control is performed for calls sent from outside the stricken area to the stricken area A101.

  The network configuration for call restriction in the second embodiment is the same as that of the first embodiment and is shown in FIG.

  In the second embodiment, the configuration of the call restriction device 106 is the same as that in FIG.

  The configuration of the exchange B 108 is the same as that of the exchange A 102 in FIG.

  FIG. 8 shows a call restriction processing flow for a call that is transmitted from the area B107 outside the disaster area to the disaster area 101 in the second embodiment.

In FIG. 8, S201 is the start of call restriction, S202 is a step in which the call restriction device 106 determines the occurrence of a disaster, S220 is a normal connection processing step, and S203 is a call restriction device 106 that makes a call restriction due to a disaster to an exchange in each area. Step S204 is a step in which the exchange B 108 in the area B 107 starts to restrict the call, S 204 is a step in which the transmission source terminal B ₁ 111 _{1 in the} area B 107 transmits, and S 205 is a step in which the exchange B 108 sends the call restriction device 106 to the transmission source terminal B ₁ 111. ₁ and the destination terminal A ₁ 105 ₁ are inquired about whether or not a call can be made, and the call restriction device 106 determines the number of calls after the disaster occurred in the disaster area A 101 of the source terminal A ₁ 105 ₁ and the destination terminal A ₂ 105 _2. Step S206 for determining whether or not the limit value is exceeded. Instruct the instrument device B 109, step of notifying the announcement information to the originating terminal _B 1 111 _1, the step of connecting the source terminal _B 1 111 ₁ to the destination terminal _{A 1} 105 1 S207, S208 are call termination S209 is a step of registering the call history of the caller terminal B ₁ 111 ₁ and the destination terminal A ₁ 105 _{1 in} the call restriction device 106, and S210 is a step of the call restriction device 106 determining the end of call congestion. , S211 respectively show steps of the call restriction device 106 releasing the call restriction.

  The configuration of the exchange B 108 is the same as that of the exchange A 102 in FIG.

Next, processing in a case where a call from the caller terminal B ₁ 111 ₁ in the area B 107 to the call receiver terminal A ₁ 105 _{1 in} the disaster area 101 is permitted will be described in detail.

FIG. 9 shows a sequence in which a call is permitted to the terminal B ₁ 111 _{1 in} the area B 107 outside the disaster area.

  9, the same components as those in FIG. 1 are given the same numbers, and the processing order is shown in <>.

  When a disaster occurs, the call restriction is started for the disaster area 101, and the exchange B 108 stores the call restriction notification to the disaster area 101 according to the notification <1> of the call restriction device 106 and starts the call restriction. <2>.

The terminal B ₁ 111 _{1 in} the area B 107 outside the disaster-stricken area makes a call to the destination terminal A ₁ 105 _{1 of the} other party who wants to talk <3>. The exchange B 108 makes an inquiry to the call restriction device 106 and inquires whether the call origination terminal B ₁ 111 ₁ and the call destination terminal A ₁ 105 ₁ can be connected to the call <4>.

The call restriction device 106 has the destination terminal A ₁ 105 _{1 located} in the disaster area A 101 based on the current area information and the call history stored in the storage means 106b, and the source terminal B ₁ 111 ₁ and the destination The terminal A ₁ 105 ₁ determines that there is no call history with the terminal in the disaster area A101 after the disaster occurs <5>, and replies to the exchange A102 that the call can be connected <6>.

The exchange B 108 instructs the connection means to make a call connection <7> and calls the receiving terminal A ₁ 105 ₁ <8>.

A call between source terminal A ₁ 105 ₁ and destination terminal A ₂ 105 ₂ is performed <9>. When the call of the caller terminal A ₁ 105 ₁ ends and the call is disconnected, the call with the call receiver terminal A ₂ 105 ₂ is disconnected through the exchange A102 <10>.

The exchange B 108 requests the call restriction device 106 to update the call registration <11>, and the call histories of the call source terminal B ₁ 111 ₁ and the call destination terminal A ₁ 105 _{1 in} the call restriction device 106 are updated and simultaneously sent. Since the former terminal B ₁ 111 ₁ made a call after the disaster occurred, information on the safety confirmation for the terminal B ₁ 111 ₁ is stored <12>.

  In FIG. 8, the call restriction is a flow through S201, S202, S203, S204, S205, S207, S208, S209, and S210.

Next, processing when the terminal B ₂ 111 _{2 in} the area B 107 outside the disaster-stricken area sends a call to the destination terminal A ₁ 105 ₁ in the disaster-stricken area A 101 after the disaster and the call is not permitted will be described.

FIG. 10 shows a sequence in which a call is not permitted to the terminal A ₁ 105 ₁ in the disaster area A101.

  In FIG. 10, the same components as those in FIG. 1 are given the same numbers, and the processing order is shown in <>.

The terminal B ₂ 111 _{2 in} the area B 107 outside the disaster area sends a call to the destination terminal A ₁ 105 _{1 of the} other party who wants to talk <1>. The exchange B 108 inquires of the call restriction device 106 whether the call connection of the caller terminal B ₂ 111 ₂ and the call receiver terminal A ₁ 105 ₁ is possible or not <2>. Based on the current location information and the call history stored in the storage means 106b, the call restriction device 106 has the destination terminal A ₁ 105 _{1 located} in the current disaster area A101, and ₁ in the disaster area 101 after the disaster occurs. Since the second call has been made, reply to the exchange B 108 that the call cannot be connected is returned <3>.

  It is determined that the call cannot be connected <3>, and the exchange A102 is answered that the call cannot be connected <4>.

The exchange B 108 instructs the announcement device (notification means) B 109 provided in the exchange B 108 to make an announcement at the time of disaster on the basis of the call disapproval <5>. The announcement device (notification means) B109 indicates that the connection to the terminal B ₂ 111 ₂ is not permitted because the destination terminal exceeds the limit value of the number of calls due to a restriction during a disaster, and the destination terminal A ₁ 105 ₁ announces that safety has been confirmed since a call was made after the disaster occurred <6>.

In this case, since the call has not been established, the call registration of the terminal B ₂ 111 ₂ is not updated.

  The above-mentioned call restriction is the case of the flow through S201, S202, S203, S204, S205, S206, and S210 in FIG.

  Further, the sequence for canceling the call restriction when the call congestion due to the disaster disappears is the same as in FIG.

  In the above description, the limit value of the number of calls is set to one from the time of the disaster until the congestion is ended. However, the call control device stores the limit value of a plurality of calls in advance, and the switch A102 of the disaster area The limit value can also be selected according to the congestion state.

  For example, immediately after the occurrence of a disaster, if the outgoing call is occurring 5 times or more of the processing capacity of the exchange, select 1 as the limit value of the number of calls, and the outgoing call will settle to less than 5 times. The limit value can be selected twice.

  In the above, the period of counting the number of calls is from when the call restriction is started after the disaster occurs until the call restriction is released, but it is reset at an appropriate period and the number of new calls is counted again. You can also restrict calls.

  For example, if the reset cycle is one day and the call is congested and the limit value of the number of calls is set to one, even if one call is made on the day of the disaster, one call can be made again on the next day.

It is a figure which shows a communication network structure. It is a figure which shows the processing flow (Example 1) of call control. It is a figure which shows the structure (Example 1, 2) of an exchange. It is a figure which shows the structure of a call control apparatus. It is a figure which shows the sequence example (Example 1) of call permission. It is a figure which shows the example of a sequence (Example 1) of telephone call rejection. It is a figure which shows the sequence (Example 1, 2) of call cancellation | release. It is a figure which shows the flow (Example 2) of call control. It is a figure which shows the example of a sequence (Example 2) of call permission. It is a figure which shows the example of a sequence (Example 2) of telephone call rejection.

Explanation of symbols

101 Disaster area A
102 Exchange A
102a Exchanger A
102b Computer (including storage means and selection means)
102c Storage means 102d Command means 102e Switch (connection means)
103 Announcement device (notification means) A
104 ₁ Base station A ₁
104 ₂ Base station A ₂
104 _n base station A _n
105 ₁ Terminal A ₁
105 ₂ Terminal A ₂
106 Call control device 106a Communication means 106b Storage means 106c Determination means 107 Area B
108 Exchange B
108a Exchanger B
109 Announcement device (notification means) B
110 ₁ Base station B ₁
110 ₂ Base station B ₂
110 _n base station B _n
111 ₁ Terminal B ₁
111 ₂ Terminal B ₂

Claims (5)

A call restriction device for restricting calls from within an area,
Means for storing a limit value of the number of calls set for the area and a history including the number of calls for a terminal that has made a call in the area;
A determination means for determining whether to permit or reject call connection based on the limit value and the history when a call is generated from within an area;
A communication restriction device comprising communication means for notifying the exchange in the area of the determination result. A call restriction method for restricting calls from within an area,
Storing a limit value of the number of calls set for the area and a history including the number of calls to a terminal that has made a call in the area;
Determining whether to allow or reject call connection based on the limit value and the history when a call is generated from within an area; and
Connecting a call based on the determination result;
Call control method consisting of: A call restriction device for restricting calls from outside the area to inside the area,
Means for storing a limit value of the number of calls set for the area and a history including the number of calls for a terminal that has made a call in the area;
A determination unit that determines whether to permit or reject a call connection based on the limit value and the history when a call occurs from outside the area to the area;
A call control device comprising: a communication unit that notifies the exchange outside the area of the determination result. A call restriction device for restricting calls from within an area and calls from outside the area to the area,
Means for storing a history including a limit value of the number of calls set for the area and the number of calls for a terminal that has made a call within a predetermined time in the area;
A determination means for determining whether to permit or reject call connection for the call based on the limit value and the history when a call is generated from the area or from outside the area to the area;
A call control device comprising: a communication unit that notifies the exchange and the outside of the area of the history and the determination result. The exchange according to claim 4 is:
Connection means for connecting the caller terminal to the callee terminal when the call restriction device receives a notification of permission for the call connection for the call when a call is made from within the area or from outside the area to the area When,
When receiving the notification of the history that the number of calls within the predetermined time of the destination terminal is one or more and the notification that the call connection is not permitted from the call restriction device, An exchange comprising: notification means for notifying that the destination terminal has already made a call within the predetermined time.

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