JP2007142845A - Exchange device and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately suppress calling which is considered as a single ring. <P>SOLUTION: An exchange 300 measures a time from calling (or a ring back tone transmission start) to disconnection. When the time is not more than a fixed time, the calling is considered as the single ring and stored in a database server 102. When a call-back is performed to the calling which is considered as the single ring, the exchange 300 changes-over a charging method so as to allow call charge concerning the call-back between terminals to be charged on a person who is regarded as a single ring calling person, based on the storage of the database server 102. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an exchange apparatus and a control method thereof that suppress a wank act.

  Conventionally, what is called damage caused by misusing the function of notifying the sender's telephone number such as a mobile phone has become a social problem. In this method, after calling for a very short time, the call is disconnected and a phone number that can be connected is left as a history in the mobile phone of the calling party. On the other hand, if the owner of the mobile phone that received the call calls back to a phone number with an incoming call history, the caller is connected to the paying information provider, and in the name of the information provision fee, the caller who does not want to charge the caller is unfair There is something to be done.

  A typical Wangiri sequence is shown in FIG. As shown in FIG. 10, the calling terminal places a call to establish a connection with the receiving terminal. The originating exchange that has received the call request connects to the terminating exchange to which the terminal is connected. The terminating exchange calls the receiving terminal, and returns a ringback tone that informs the calling terminal that the receiving terminal is being called. The calling terminal does not wait for a response from the receiving terminal, and disconnects in an extremely short time so that an incoming call history that informs the receiving terminal that a call has been received from the calling terminal remains. Since the number of calls until disconnection is almost once, it is called Wangiri. In this specification, a call having a call duration time shorter than a predetermined value is referred to as a single limit.

  Conventionally, as a countermeasure, the terminal side makes a decision and displays a warning screen to the effect that the terminal seems to be at the time of callback for that terminal, or makes the calling terminal that received the terminal limit to be rejected. By registering, there is one that can reject an incoming call from the next time (see Patent Document 1).

  Conventionally, mobile phone service companies have adopted measures such as “Wangiri incoming call rejection function”, “Use of silent ringtone for a certain period of time”, “Use of step tones”, “Annoying call stop service”, etc. User service is provided.

  The "Wangiri incoming call rejection function" is to reject incoming calls from registered general subscriber phone numbers by registering a phone number that is presumed to be a one-time service provider according to the registration procedure determined by the mobile phone service company. Is.

  Also, in “use of silent ringtone for a certain period of time”, a ringing tone with a silent portion at the beginning (2 to 6 seconds) is used so that a ringing tone is not generated.

  In “use of step tone”, a function called “step tone” in which the ring tone gradually increases is used to make it difficult to notice the ringing tone.

  In the “nuisance call stop service”, a specific telephone number is dialed, a telephone number for rejecting an incoming call (such as the previous party) is registered in the network, and the incoming call from a caller registered as a rejection target is rejected on the network side.

Also, some conventional mobile phone terminals have a function of displaying the number of incoming calls in the incoming call history and giving the user an indication of whether or not the incoming call is unknown.
JP 2003-249995 A

  However, registering an incoming call rejection target on the mobile terminal or the network side has a limit on the number of registrations of telephone numbers, so it is difficult to deal with malicious businesses that switch telephone numbers one after another. Furthermore, the “Wangiri incoming call rejection function” and the “nuisance call stop service” are bothersome because it is necessary to register the telephone number of the Wangiri dealer in advance.

  In addition, “Use Silent Ringtones for a certain period of time” or “Use Step Tone” may not be noticed immediately after the actual incoming call, but since the call history remains on the mobile terminal, the user calls back. This is not enough as a countermeasure.

  The present invention has been made in view of such a point, and an object thereof is to provide an exchange apparatus and a method for controlling the same that can effectively suppress a waning action.

  In order to solve such a problem, an exchange apparatus according to the present invention includes an illegal call detection means for detecting a short-time call having a call duration time of a predetermined value or less as an illegal call, and a callback for the illegal call upon a callback. A billing control means for switching a billing destination so as to charge a call charge to a terminal that has made an illegal call is adopted.

  Also, the control method of the exchange apparatus according to the present invention includes an illegal call detection step for detecting a short-time call having a call duration of a predetermined value or less as an illegal call, and a call charge for a callback for the illegal call upon a callback. And a charging control step of switching a charging destination so as to charge a terminal that has made an illegal call.

  According to the present invention, since a fee is charged for a calling terminal when making a callback, it is possible to effectively suppress the maliciousness based on malicious intention.

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

(Embodiment 1)
FIG. 1 is a block diagram showing a configuration of a network system according to Embodiment 1 of the present invention. The network system 100 mainly includes a communication network 101, a database server 102, exchanges 103 and 104, and communication terminals 105 and 106.

  The exchanges 103 and 104 and the database server 102 are connected to the communication network 101. Communication terminals 105 and 106 are connected to exchanges 103 and 104.

  The exchanges 103 and 104 have an access point for connecting the communication terminals 105 and 106 and a router function for appropriately routing in the network. The database server 102 stores the telephone number of the calling terminal and the receiving terminal, the presence / absence of a charge switching response, etc., for the call that is determined to be a complete call. Communication terminals 105 and 106 are communication terminals having a voice call function.

  Note that the communication network 101 is a network that performs voice communication between a calling terminal and a receiving terminal, including not only a mobile phone network but also an inter-network connection with an analog fixed telephone network (PSTN).

  FIG. 2 is a block diagram showing a configuration of communication terminal 200 according to Embodiment 1 of the present invention. Communication terminal 200 corresponds to communication terminals 105 and 106 in FIG.

  The communication terminal 200 mainly includes a terminal control unit 201, a transmission / reception unit 202, an operation unit 203, a microphone 204, a display unit 205, a speaker 206, and a memory 207.

  The terminal control unit 201 controls the operation of each unit of the communication terminal 200. The transmission / reception unit 202 transmits / receives data to / from the exchanges 103 and 104. The operation unit 203 is an interface for the user to operate the communication terminal 200, and is configured with a push button or the like, and sends an operation operated by the user to the terminal control unit 201. The microphone 204 converts an audio signal into an electric signal. The display unit 205 displays information sent from the terminal control unit 201. The speaker 206 converts an electrical signal into an audio signal.

  FIG. 3 is a block diagram showing the configuration of the exchange 300 according to the first embodiment. The exchange 300 corresponds to the exchanges 103 and 104 in FIG.

  The exchange 300 mainly includes a communication control unit 301, a terminal transmission / reception unit 302, a memory 303, a database server communication unit 304, a network transmission / reception unit 305, a timer 306, and a database server 102.

  The communication control unit 301 controls the operation of each unit of the exchange 300. The terminal transmission / reception unit 302 establishes a communication link with any communication terminal 105, 106 via wired or wireless communication under the control of the communication control unit 301, and communicates with the communication terminal 105, 106. The network transmission / reception unit 305 establishes a communication link with another switch via the communication network 101 under the control of the communication control unit 301, and communicates with the other switch.

  Further, the communication control unit 301 includes an illegal call detection unit 307, a charging method switching notification unit 308, a charging control unit 309, and a central processing unit (CPU) 310.

  The illegal call detection unit 307 outputs an illegal call detection signal to the accounting method switching notification unit 308 when detecting the last call as an illegal call. Charging method switching notification unit 308 receives the illegal call detection signal and outputs a charging method switching notification signal to communication terminals 105 and 106. When the charging control unit 309 determines that the callback performed after the charging method switching notification signal is output to the communication terminals 105 and 106 is the callback for the terminal that has made the illegal call, the charging method for the callback Switching control is performed.

  The memory 303 stores a program group executed by the CPU 310 of the communication control unit 301. This program group includes a program for performing communication control between the communication terminals 105 and 106 or communication control between the respective exchanges 103 and 104, and further, a program for realizing a one-time detection and charging switching signal transmission sequence, charging A program for realizing a connection procedure when a switching response is not returned is also stored in the memory 303. Further, the program group includes a communication control program for controlling transmission / reception of information to / from the database server 102, and stores each processing program for performing “one-time history confirmation” and “collect mode switching” control. . The memory 303 also stores a program for performing “charging switching signal” transmission processing, “charging switching response” reception processing, and voice guidance transmission processing. That is, the CPU 310 realizes functions necessary for the exchange 300 by executing each program stored in the memory 303. Since a method for realizing the necessary functions by such a stored program method is well known and commonly used in the field of Neumann computers, detailed description thereof is omitted.

  The database server communication unit 304 communicates with the database server 102 via the communication network 101. The database server communication unit 304 acquires and rewrites various data from the database server 102 in accordance with instructions from the CPU 310 of the communication control unit 301.

  FIG. 4 is a diagram showing a sequence for sending a signal detection and charging method switching notification signal in the network system 100. Next, the operation of the network system 100 according to the first embodiment will be described with reference to FIG. In order to clarify the explanation when necessary, the communication terminal on the initial transmission side is called the transmission terminal 106 and the communication terminal on the initial reception side is called the reception terminal 105, and they will be described separately.

  The calling side exchange, for example, the exchange 104 in FIG. 1, detects the call from the calling terminal 106 (S41), and when the call is disconnected from the calling terminal 106 without reaching the call, Measure time.

  Specifically, in FIG. 4, when the exchange 104 receives a call signal from the transmission terminal 106, the CPU 310 of the communication control unit 301 starts the timer 306. Thereafter, the CPU 310 stops the timer 306 at the time of receiving the disconnection signal (S42), and measures the time from the call origination to the disconnection.

  Note that, instead of the time from the call origination to the disconnection, it is also possible to measure the time from the ringback tone transmission start (S43) to the disconnection at the receiving side exchange 103.

  When the time from the call to the disconnection measured in this way is “when it is below a certain threshold value” and “when the disconnection is performed before the call”, the illegal call detection unit 307 detects an illegal call and outputs an illegal call detection signal. The unauthorized call detected by the unauthorized call detection unit 307 is determined to be a charge that needs to be switched. The database server communication unit 304 receives the illegal call detection signal, sends control information to the database server 102, and records the one-time information including the corresponding calling terminal number (S44).

  When an illegal call is detected, the accounting method switching notification unit 308 receives the illegal call detection signal from the illegal call detection unit 307 and receives both communication terminals (200: 2), a billing method switching notification signal is sent (S45, S46). The transmitted accounting method switching notification signal is received by the transmission / reception unit 202 of the communication terminals 105 and 106 and output to the terminal control unit 201.

  When the terminal control unit 201 of each of the communication terminals 105 and 106 confirms that the input signal is a charging switching notification signal, the terminal 104 completes reception of the charging method switching notification signal to the exchange 104 via the transmission / reception unit 202. Is returned (S47, S48).

  Note that the communication terminals 106 and 105 that have received the accounting method switching notification signal are displayed and notified that the last call corresponds to the last call, as schematically shown in FIG. Specifically, for the callback corresponding to the call, the billing method is different from the normal method, and a display indicating that the incoming side (one calling side) is charged is displayed.

  In particular, as schematically shown in FIG. 5 (b), the receiving terminal 105 is configured to improve the visibility of the callee by providing a dedicated display of the incoming call history dedicated to Wangiri separate from the normal incoming call history. This is preferable in the practice of the present invention.

  FIG. 6 is a diagram showing a voice guidance sequence in a case where the charge switching response (steps S47 and S48 in FIG. 4) is not returned. Hereinafter, the operation when the charge switching response is not returned will be described.

  Now, for some reason, the communication terminal fails to receive the charging method switching notification signal (steps S45 and S46 in FIG. 4), and a charging switching response is not returned to the exchange within a certain time. A case in which reception of a charging method switching notification signal and transmission of a charging switching response are not supported will be described with reference to FIG. FIG. 7 shows information stored in the database server 102 for an outgoing call determined to be complete. This stored information is made up of information on the calling date and time, the calling terminal number, the called terminal number, the presence / absence of a charging switching response from the calling terminal, and the presence / absence of the charging switching response from the called terminal.

  First, when the user of the receiving terminal 105 makes a call (call) by callback, this is transmitted to the exchange 103 (S61). Next, a one-time history is confirmed between the exchange 103 and the database server 102 (S62). Specifically, the charging control unit 309 of the exchange 103 reads out the stored information stored in the database server 102 after determining that it is a last minute. Thereafter, the charging control unit 309 reads out the stored information in the database server 102, and determines whether the terminal number of the other party related to the current callback is stored as the one terminal that made an illegal call to the database server 102. It is determined whether it is included in the terminal number. If the calling control unit 309 stores the calling terminal number and determines that the call back is for the Wangiri terminal, the charging control unit 309 requests the exchange 104 accommodating the corresponding transmitting terminal 106 to switch to the collect mode (S63). ). That is, the charging control unit 309 of the receiving terminal 106 requests switching of the charging destination so as to be in a collect mode in which the communication partner is charged, unlike the normal mode in which the user bears charging.

  In response to this, the exchange 104 next calls the calling terminal 106 (S64) and transmits a ringback tone to the receiving terminal 105 (S65). Next, when there is an incoming call response from the calling terminal 106 in the exchange 104 (S66), the incoming call response is also transmitted to the exchange 103 (S67). As a result, the exchange 104 is switched to the calling terminal 106, and the switching switch 103 is switched to the calling terminal 105 and voice guidance is performed to the effect that the calling terminal 106 is charged. (S68, S69). In this way, after voice guidance indicating that the charging method is switched is sent to both communication terminals 106 and 105, it is detected that both exchanges 104 and 103 have accepted (for example, the user does not disconnect after voice guidance). The call is established only when it is determined that the collect call connection is accepted (S70).

  The above is related to FIG. 6A, and an example in which voice guidance (S68, S69) is triggered by an incoming call response (S66) from the calling terminal 106 has been shown, but the timing of voice guidance is not limited to this. For example, as shown in FIG. 6B, voice guidance may be provided (S691) in synchronization with a call from the exchange 104 to the calling terminal 106 (S64).

  If a billing switching response is returned, the exchange 103 or 104 in FIG. 6 (a) or FIG. 6 (b) omits sending voice guidance (S69, S691) to the receiving terminal 105. May be. If the voice guidance for the receiving terminal 105 is omitted in this way, the processing load and facility load on the communication network 101 including the exchanges 103 and 104 are reduced accordingly.

  In the first embodiment, even if the billing method is switched for the callback corresponding to Wangiri (S61), it does not cause a problem for a legitimate user (a non-malicious user such as a family member or friend). That is the premise. This is because it can be assumed that the authorized user accepts the charge even if the charge method is switched due to the callback (S61). Thus, according to Embodiment 1, it is possible to charge the caller for a call request that is likely to cause a breach, and to suppress a malicious wank act. In addition, when switching the charging method in accordance with the callback (S61), this is clearly indicated, so that fairness among legitimate users is not impaired.

  In Embodiment 1, the switching of the callback is guided by voice, but other methods, for example, the calling terminal 106 is notified by a collect call dedicated sound, or the calling terminal 106 itself has a function of collect call. You may make it tell that there is.

(Embodiment 2)
Next, a second embodiment according to the present invention will be described. The second embodiment is characterized by the receiving terminal 800. FIG. 8 is a block diagram showing a configuration of receiving terminal 800 according to Embodiment 2. In FIG. Since the receiving terminal 800 has the same configuration as the communication terminal 200 shown in FIG. 2, the same reference numerals are assigned to the same blocks, and detailed description thereof is omitted.

  Incoming terminal 800 according to Embodiment 2 mainly includes terminal control unit 801, transmission / reception unit 802, operation unit 203, microphone 204, display unit 205, speaker 206, and memory 207. . The terminal control unit 801 has a charge switching control unit 808 and an incoming call history display switching unit 809. The terminal control unit 801 has a charge switching response reply unit 810. The memory 207 has an address book area 811.

  Terminal control unit 801 controls the operation of each unit of incoming terminal 800. The transmission / reception unit 802 transmits / receives data to / from the exchanges 103 and 104. The display unit 205 displays information sent from the terminal control unit 801.

  When a charging method switching notification signal is input from the exchange 104 via the transmission / reception unit 802, the charging switching control unit 808 also inputs the terminal number data for which the charging has been performed, and determines whether the charging method can be switched to the terminal. To do. This determination is made by comparing the terminal number data with the address book data in the address book area 811. The charge switching control unit 808 outputs the determination result after the comparison to the incoming call history display switching unit 809 and the charging switch response reply unit 810.

  The incoming call history display switching unit 809 switches the display of the display unit 205 according to the determination result of the charge switching control unit. Charging switching response reply unit 810 outputs the determination result of charging switching control unit 808 to transmission / reception unit 802.

  Next, the operation of the receiving terminal 800 will be described. When the limit is detected, the exchange 104 transmits a billing method switching notification signal and the terminal number data after the limit. The charging method switching notification signal and the terminal number data are received by the transmission / reception unit 802 and output to the charging switching control unit 808 of the terminal control unit 801.

  The charging switching control unit 808 receives the charging method switching notification signal, and determines whether to switch the charging switching or not. Specifically, charging switching control unit 808 compares the received terminal number data with the address book data output from address book area 811. When the charging switching control unit 808 detects that the terminal number of the calling terminal 106 that has been charged is included in the address book area 811, the charging switching control unit 808 determines that the switching of the charging method is unapproved, and conversely, When the terminal number 106 is not included in the address book area 811, it is determined that the accounting method switching has been approved, and the determination result is output. In the present embodiment, the terminal number indicated by the address book data stored in the address book area 811 is a number indicating the family, acquaintance, etc. of the user of the receiving terminal 800, and the user of the receiving terminal 800 It is assumed that the call back is approved.

In this way, the billing switching control unit 808 sends a billing switching response signal indicating whether the billing switching is approved or not approved according to the determination result to the incoming call history display switching unit 809 and the billing switching response reply unit 810. And output.

  The incoming call history display switching unit 809 outputs a display switching signal to the display unit 205 when the charging switching response signal received from the charging switching control unit 808 is a signal indicating that charging switching is approved (charging switching approval signal). To do. Upon receiving the display switching signal, the display unit 205 switches the display of the incoming call history to the dedicated incoming call history as shown in FIG. 5B as in the case of the first embodiment.

  When the charge switching response signal received from the charge switching control unit 808 is a signal indicating that charging switching is not approved (charging switching non-approval signal), the incoming call history display switching unit 809 displays the indicator 205 Display normal incoming call history.

  The charging switching response reply unit 810 transmits a charging switching response signal to the exchange 104 via the transmission / reception unit 802. The exchange 104 determines that the charging switching response signal is a signal indicating that charging switching is approved (charging switching approval signal) according to the determination result of whether or not charging switching is indicated by the charging response signal. As in the case of the case, the charging for the callback is switched to the calling terminal 106 side, and the charging switching response signal is a signal indicating that the charging switching is not approved (charging switching non-approval signal). In contrast, control is performed to charge the receiving terminal 800 without switching charging for the callback to the transmitting terminal 106 side.

  As described above, the receiving terminal 800 according to the second embodiment does not send back a charging switching response signal that approves the switching of the charging method uniformly as in the first embodiment. If it is from the terminal number stored in the address book area 811, the switching of the billing method accompanying the stoppage is stopped. Therefore, when the user of the receiving terminal 800 is willing to pay himself / herself, the usage conditions of the receiving terminal 800 can be set without performing any special operation. In FIG. 8, the address book area 811 has been illustrated and described as a single area. However, when the address book area 811 is divided into family, friends, acquaintances, etc., for example, billing switching is performed only for the family and friend terminal numbers. The control unit 808 may determine whether or not charge switching is possible. Since communication terminals such as recent mobile phones can be used by dividing the address book area as a standard, using this function, the user can easily set the other party to approve the billing to the communication terminal 800, Convenience for terminal users is improved.

  As described above, according to the second embodiment, the user of the communication terminal 800 can easily prevent undesired charging switching and can smoothly use the communication terminal. On the other hand, when the charge switching is not approved, the network system 100 is relatively rare, and in the network system 100, a signal for approving the charge switching is returned to the exchange 104 at an early stage in response to the overwhelming number of malicious ones. Similar to the first embodiment, it is possible to reduce the load on the network system 100 and the like.

(Embodiment 3)
Next, a third embodiment according to the present invention will be described with reference to FIG. FIG. 9 is a block diagram showing a configuration of the exchange 900 according to the third embodiment. The third embodiment is the same as that of the first embodiment except for the communication control unit 901 in terms of hardware, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted. In FIG. 9, the communication control unit 901 includes a legitimate call detection unit 902, a post-legal call accounting control stop unit 903, a predetermined progress detection unit 904 after illegal call, and a charge control stop unit 905 after a predetermined period. have.

  The legitimate call detection unit 902 detects a case where a calling terminal makes a call for a predetermined time or more after performing a one-time operation as a legitimate call, and outputs a legitimate call detection signal. The charging control stop unit 903 after a legitimate call stops the billing control for switching the billing method for the calling terminal in response to the legitimate call detection signal. The predetermined period elapsed detection unit 904 after the illegal call outputs a predetermined period elapsed detection signal when the predetermined period elapses after the calling terminal performs the last call. The charging control stop unit 905 receives a predetermined period elapsed detection signal and stops charging control for switching the charging method for the corresponding transmitting terminal after the predetermined period has elapsed.

  In the network system according to the third embodiment of the present invention, the user's burden associated with the switching control of the accounting method is not excessive so that the state determined and stored is not maintained unnecessarily for a long time. There is a feature in the point.

  In the third embodiment, the billing method switching target is only one callback for a short-time call that the switch 104 has determined to be complete. That is, in the third embodiment, when the caller does not intend to complete the process, but has received a billing method switching notification signal from the switch 104 due to an operation error, for example, the same caller terminal 106 is used again. By continuing the call for a period of time that is not determined to be the same for the same callee, it is possible to stop the switching of the billing method registered in the network immediately before.

  Specifically, if the user of the calling terminal 106 after an unwilling operation makes a call again and continues to call the same called party for the time equal to or longer than the timer 306, the valid call detection unit 902 Thus, it is detected that the timer 306 has timed up and that a valid call has been made again. Along with the detection of the legitimate call, the legitimate call detection unit 902 outputs a legitimate call detection signal to the post-legitimate call accounting control stop unit 903. In response to this output, the post-legal call accounting control stop unit 903 deletes the stored information related to the corresponding transmission terminal 106 stored in the database server 102 as a last minute via the database server communication unit 304. When the stored information of the database server 102 is deleted in this way, the charging control for switching the charging method at the time of callback from the receiving terminal 105 is not executed, and charging for the corresponding transmitting terminal 106 is not performed. .

  As a result, even when the user of the calling terminal 106 performs a calling operation determined to be a one-off operation, the charging method switching control is stopped by a simple operation by the calling terminal 106 such as a legitimate call. Such switching of the billing method due to a subsequent legitimate call can be stopped in a short period after unwillingly making a call, so there is an unnecessary misunderstanding about whether or not there is a one-stop operation between both the incoming and outgoing terminal users. In addition, the convenience between users is improved. In accordance with this, the exchange 104 can change the display of the incoming call history only at the receiving terminal 105 to the normal display of the incoming call history.

  Furthermore, only the callback within a predetermined period from the call origination date / time (the time recognized on the exchange 104 side) when the first call was made in the third embodiment, and when the predetermined period has passed, the billing registered in the network Cancel method switching.

  Specifically, when a predetermined period, for example, half a day, has elapsed since the occurrence of an unjust call, the elapse of the predetermined period is detected by a predetermined time elapse detection unit 904 after the unfair call, and a predetermined period elapse detection signal is displayed for a predetermined time. After the elapse of time, it is output to charging control stop section 905. The accounting control stop unit 905 receives the output after the predetermined time has elapsed, and deletes the stored information related to the corresponding transmission terminal 106 stored in the database server 102 via the database server communication unit 304. For the transmission terminal 106 from which the stored information of the database server 102 has been deleted, the charging method switching control is stopped even if it is once stored.

  Thus, unlike the callback performed immediately after the occurrence of Wangiri, the callback by the user of the receiving terminal 105 when the last day of Wangiri has passed is considered to be a result of the user's calm judgment. It is treated as a callback in which the user of the terminal 105 has approved the charge burden.

  As described above, according to the third embodiment, in the case of a predetermined condition, the charge method switching control associated with Wanri is stopped, but this is a stop between users who are assumed to have a specific relationship such as family, friends, etc. It is a control, and it is possible to maintain the switching of the accounting method strictly for malicious callers, and the effect of suppressing the limit is great.

(Embodiment 4)
Next, a fourth embodiment according to the present invention will be described. The fourth embodiment is also the same as that of the first embodiment in terms of hardware, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted. The network system according to Embodiment 4 of the present invention is characterized in that a plurality of billing methods are prepared and can be selected when it is determined that there is a limit.

  In the fourth embodiment, as the first method of switching the charging method, the callback receiver (original sender) bears the full amount for the callback that is the charging method switching target such as collect call. The method. Further, the second billing switching method may be a method of splitting the charge between the sender and the receiver instead of the full amount. Further, as a third method, the callback receiver (original sender) side bears only for the first few minutes of the callback, and thereafter, the callback sender pays as usual. Forcing such a certain burden on the original caller can sufficiently exert the effect of suppressing the wrinkle when the original caller is malicious.

  Also, a plurality of charging switching methods can be prepared in advance by combining these first to third methods and other methods.

  As described above, in the network system according to the fourth embodiment, a plurality of charging switching methods are prepared in advance. For example, a service provider having an exchange can change or use a person who abuses Wangiri. In consideration of the convenience of the user, it is possible to employ the most suitable suppression means.

  In addition, when the callback call for Wangiri is automatically transferred to the pay information program without the intention of the call back person (for example, when there is no dial operation by the user and the pay program is automatically connected). In addition, when the telecommunications carrier is acting on behalf of collecting the information amount, it is possible not to perform the information amount substitution or to stop the connection to the pay program. In such a case, there is a high possibility that Wangiri has been misused, so it is desirable for the service provider to charge the telecommunications carrier from the viewpoint of improving the service for general users. Realization of such a function can also be realized by storing a predetermined program corresponding to the memory 303 in FIG.

  INDUSTRIAL APPLICABILITY Since the present invention can effectively suppress a waning act aiming at information amount income that has become a social problem, it is effective for improving the convenience of a user of a communication terminal device such as a mobile phone.

1 is a block diagram showing a configuration of a network system according to Embodiment 1 of the present invention. The block diagram which shows the structure of the communication terminal device which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the switching system which concerns on Embodiment 1 of this invention. The figure which shows the accounting method switch notification signal transmission sequence which concerns on Embodiment 1 of this invention. Schematic diagram for displaying the charge switching state according to the first embodiment of the present invention. The figure which shows the audio | voice guidance transmission sequence of charge switching which concerns on Embodiment 1 of this invention. The figure which shows the memory | storage information of the database server which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the communication terminal device which concerns on Embodiment 2 of this invention. The block diagram which shows the structure of the switching system which concerns on Embodiment 3 of this invention. Wangiri sequence diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Network system 101 Communication network 102 Database server 103, 104, 300, 900 Exchange machine 105, 106, 200, 800 Communication terminal (sending terminal, receiving terminal)
201, 801 Terminal control unit 301, 901 Communication control unit 302 Terminal transmission / reception unit 304 Database server communication unit 305 Network transmission / reception unit 306 Timer 307 Unauthorized call detection unit 308 Accounting method switching notification unit 309 Accounting control unit 808 Accounting switching control unit 809 Incoming History display switching unit 810 Charging switching response reply unit 902 Legitimate call detection unit 903 Legal call after charging control stop unit 904 Legitimate call after a predetermined period of time detection unit 905 Billing control stop unit after a predetermined period of time

Claims (9)

Illegal call detection means for detecting a short-time call with a call duration of a predetermined value or less as an illegal call;
Charging control means for switching a charging destination so as to charge a call charge for a callback for the illegal call to the terminal that made the illegal call upon callback;
An exchange apparatus comprising:   2. The exchange apparatus according to claim 1, further comprising billing method switching notifying means for notifying each terminal of incoming and outgoing calls of switching of the billing method in response to the illegal call.   The billing method switching notifying means notifies in advance by voice guidance that the billing method is switched prior to the call connection for both terminals after the incoming call response from the called party in the callback for the illegal call. The exchange apparatus according to claim 2.   Legitimate call detection means for detecting a legitimate call after the illegal call detection, and billing control stop means after legitimate call for stopping switching of the billing method by the billing control means by the output of the legitimate call detection means The exchange apparatus according to claim 1, further comprising:   The switching of the charging method by the charging control unit is stopped by the output of the predetermined period after the illegal call detecting unit for detecting the passage of the predetermined period after the illegal call and the output of the predetermined period after the illegal call detecting unit. 2. The exchange apparatus according to claim 1, further comprising charging control stop means after a predetermined time has elapsed.   A communication comprising charging switching response reply means for returning a charging switching approval signal indicating approval of switching of a charging method to the switching apparatus in response to reception of the charging method switching notification transmitted by the switching apparatus according to claim 2. Terminal device.   A non-approved terminal number storage means for storing a non-approved terminal number for non-approved switching of the charging method is compared with the non-approved terminal number and the calling number that made the unauthorized call, and charged according to the comparison result Charging switching control means for controlling approval or non-approval of method switching, and the charging switching response means uses the charging switching approval signal or charging switching non-approval signal as a charging switching response signal according to the comparison result. The communication terminal apparatus according to claim 6, which sends a reply to the exchange apparatus.   In response to the approval by the charge switching control means, a display means for displaying an incoming call history, and an incoming call history that switches and displays the occurrence of switching of the charging method in distinction from the normal incoming call history display by the display means The communication terminal device according to claim 7, further comprising display switching means. An illegal call detection step of detecting a short-time call with a call duration of a predetermined value or less as an illegal call;
A charging control step of switching a charging destination so as to charge a call charge for a callback for the illegal call to the terminal that made the illegal call upon callback.
A control method for an exchange apparatus comprising:

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