JP5709635B2 - Communication relay system and guidance device - Google Patents

Description

  The present invention relates to a communication relay system and a guide device for relaying between a transmission side communication device and a reception side communication device.

  In recent years, the functions of telephones have been expanded. For example, a service that can reject an incoming call without ringing a ringing tone for a caller whose telephone number cannot be specified (not notified of a telephone number) is provided. Also, even if the call can be specified by the caller phone, if you want to reject the incoming call from the caller phone individually, register the phone number of the caller phone, specify the registered phone number, and specify There is a technique for rejecting an incoming call having a matching telephone number by comparing the telephone number of the calling telephone set (for example, Patent Document 1).

  Also, if the caller's voice in a call is converted into a character string and there are a large number of characters that match a pre-registered keyword (such as “Kozabangou”), the call is determined to be a call from a fraudster. A technology for establishing a call with a pre-registered report destination telephone during a call and performing a three-party call including the report destination telephone is disclosed (for example, Patent Document 2).

Japanese Patent Laid-Open No. 7-235579 Japanese Patent No. 4310748

  However, when the three-party call is uniformly started by the determination based on the keyword using the technique of Patent Document 2, the three-party call may be executed even if it is not actually a fraudulent act. is there. At this time, the callee may forget that he / she is connected to the call destination telephone, or may have a long conversation without being aware of it, and there is a risk of lack of privacy protection for the callee or caller. is there.

  In addition, if a third party can make a valid judgment immediately through the telephone, it is possible to prevent damage caused by fraud. However, depending on the content of the call, a valid judgment can be made immediately. May be difficult. And if the third party can't interrupt the conversation immediately, the caller believes in the story of the scammers as the conversation between the scammers and the callee progresses, and as a result, the third party is alerting Nevertheless, there is a risk that the callee will be deceived. Therefore, there is a demand for a technology that improves the deterrence of fraud by performing a process that alerts the fraudster at an early stage.

  The present invention has been made in view of such a problem, and an object thereof is to provide a communication relay system and a guide device capable of protecting privacy and improving the deterrence of fraud.

In order to solve the above-described problem, the present invention includes a relay server that relays between a caller communication device and a callee communication device, and a guide device that can be connected to the caller communication device and the callee communication device through the relay server. In the communication relay system, the relay server includes a request transfer unit that receives a communication request from the caller communication device to the callee communication device registered in advance and connects the caller communication device and the guide device. A guide connection unit that connects the guidance device and the receiving side communication device, a three-party communication execution unit that connects the calling side communication device, the receiving side communication device, and the guidance device so that three-way communication is possible, and three-party communication A three-party communication notifying unit for notifying that the three-party communication is being executed through the incoming communication device and the outgoing communication device, and the three-party communication execution unit performs the three-party communication. A predetermined time has elapsed since the execution The three-party communication is switched to the two-party communication between the calling-side communication device and the called-side communication device, and the three-party communication notification unit notifies the three-party communication when the three-party communication is switched to the two-party communication. It is terminated and said Rukoto.

In order to solve the above-described problem, the guide device of the present invention, which can be connected to the caller communication device and the callee communication device through a relay server that relays between the caller communication device and the callee communication device, While performing a three-party communication, a guidance connection unit that connects a communication device, a three-party communication execution unit that connects a calling-side communication device, a receiving-side communication device, and a guidance device so that three-way communication is possible, A three-party communication notifying unit for notifying that the three-party communication is being executed through the incoming communication device and the outgoing communication device, and the three-party communication execution unit is predetermined after executing the three-party communication. When the predetermined time elapses, the three-party communication is switched to the two-party communication between the calling-side communication device and the called-side communication device. and features that you end the notification of being a person communication.

  In addition, an operation unit that accepts an operation input of a guide who is a user is provided, and the three-party communication execution unit guides the three-party communication according to the operation input of the guide during the execution of the three-party communication. Switching to the two-party communication between the device and the receiving communication device, the three-party communication notifying unit may notify the fact through the transmitting communication device.

  The three-party communication execution unit receives a disconnection request of the receiving communication device while executing the three-party communication, and switches the three-party communication to two-party communication between the calling communication device and the receiving communication device, The three-party communication notification unit may end the notification that the communication is three-party communication.

  The three-party communication execution unit receives the switching request for the receiving communication device and receives the switching request for the receiving communication device even after the three-party communication is switched to the two-party communication between the transmitting communication device and the receiving communication device. Switching to the two-party communication with the receiving communication device, the three-party communication notification unit may notify the fact through the calling communication device.

  According to the present invention, while a three-party call (three-party communication) is being executed to prevent fraud, privacy is protected by notifying the callee to that effect, and a three-party call is being executed. It is possible to improve the deterrence of fraud by notifying the sender of this fact.

It is explanatory drawing which showed the schematic relationship of the communication relay system. It is the functional block diagram which showed the electrical structure of the relay server. It is explanatory drawing for demonstrating an incoming call permission table. It is the functional block diagram which showed the electrical structure of the guide apparatus. It is the flowchart which showed the whole flow of the communication relay method. It is the flowchart which showed the whole flow of the communication relay method. It is the sequence diagram which showed the typical example of the communication relay method.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Communication Relay System 100)
FIG. 1 is an explanatory diagram showing a schematic relationship of the communication relay system 100. The communication relay system 100 includes a communication network 102, a transmission side communication device 110, a relay server 120, a guidance device 130, and a reception side communication device 140.

  The communication network 102 includes a telephone line, the Internet, a LAN (Local Area Network), a dedicated line, and the like, and connects the transmission side communication device 110, the relay server 120, the guidance device 130, and the reception side communication device 140, respectively.

  The caller communication device 110 is a telephone (communication device) that starts a call in this embodiment, and is used by an arbitrary caller 112 to call the callee communication device 140 of the callee 142. Here, the calling side communication device 110 uses a VoIP (Voice over Internet Protocol) in addition to a fixed phone connected to a fixed phone line, a mobile phone connected to a mobile phone network, a PHS (Personal Handy-phone System). A voice input unit 110a for inputting the voice of the caller 112, and a voice output unit 110b for outputting the voice of the caller 142 or the guide 132, which are composed of devices such as a PDA (Personal Digital Assistant) and a personal computer. And a communication unit (not shown) for realizing voice communication.

  The relay server 120 is connected to an exchange such as a fixed telephone network, for example, and relays a call from the calling communication device 110 to the receiving communication device 140. Here, the relay server 120 has at least a function of transferring the call to the specific device (here, the guide device 130) with respect to the call from the calling communication device 110 to the receiving communication device 140. Further, the relay server 120 can realize a two-party call in which any two selected from the transmission side communication device 110, the guidance device 130, and the reception side communication device 140 are connected, and a three-party call in which all are connected. It is also possible to switch between a three-party call and a two-party call between arbitrary devices in response to 130 switching commands.

  The guidance device 130 includes a communication device similar to the transmission side communication device 110 and is provided so as to be connectable to the transmission side communication device 110 and the reception side communication device 140 through the relay server 120. In the guidance device 130, for example, a call from the calling communication device 110 to the receiving communication device 140 is used as a trigger to connect to the calling communication device 110 or the receiving communication device 140, and the guide (guidance) The operator 132 who becomes the user of the device 130 corresponds individually.

  The receiving side communication device 140 is a telephone (communication device) that receives a call in this embodiment, and, like the calling side communication device 110, a fixed telephone connected to a fixed telephone network or a mobile phone connected to a mobile telephone network. In addition to PHS, a voice input unit 140a for inputting a voice of the called party 142 and a voice for outputting the voice of the caller 112 or the guide 132 is configured by a device such as a PDA or a personal computer that performs a call using VoIP. It has the output part 140b and the communication part (not shown) which implement | achieves voice communication.

  In the present embodiment, an object is to prevent fraudulent acts through such a call from the calling communication device 110 to the receiving communication device 140. Here, fraudulent billing scams that transfer cash based on fictitious facts, such as nominal costs related to litigation, fraudulent claim frauds, loan guarantee scams that pledge a deposit to the person who applied for the loan, and annuity There is a fraud such as a refund that operates as an ATM and transfers cash as if it is a refund procedure for taxes, and a transfer fraud that transfers cash as an acquaintance pretending to be a nominal amount of money for a traffic accident. In particular, the number of wire frauds and the amount of damage are increasing rapidly in the near future. Also, scammers themselves have become clever and malicious, such as impersonating police officers, lawyers, bankers, etc. in groups of people.

  In the communication relay system 100, when the caller 112 makes a call from the caller communication device 110 to the callee communication device 140 (FIG. 1 (1)), if the caller communication device 110 is not known, the caller A guide 132 of the guide device 130 is interposed. For example, when the malicious caller 112 calls the callee communication device 110 from the caller communication device 110 to deceive the callee 142, the relay server 120 does not immediately connect the both. Then, the guidance device 130 is called to connect the communication device 110 on the transmission side and the guidance device 130 (FIG. 1 (2)). Then, only when the guide 132 of the guide device 130 confirms the identity of the caller 112 of the caller communication device 110 (FIG. 1 (3)) and obtains a certain level of credibility, that fact is indicated. To the called party 142 (FIG. 1 (4)), and finally a direct call between the calling side communication device 110 and the called side communication device 140 is started (FIG. 1 (5)). Here, only when the caller 112 can be trusted, the guidance device 130 can protect the callee 142 from fraud by allowing the call to the callee 142.

  Further, the guider 132 of the guidance device 130 monitors the call between the calling side communication device 110 and the called side communication device 140 even after the calling side communication device 110 and the receiving side communication device 140 are directly connected (here, the electronic data and the sound are watched by viewing ( (Listening) is called monitoring.) This is because the purpose of the call transmitted from the caller 112 to the guider 132 is different from the content of the caller 112 actually calling the callee 142, which may be a fraudulent act. . For example, the guidance device 130 performs a three-party call (corresponding to a three-party communication) with the caller communication device 110 and the callee communication device 140, and the guider 132 performs a conversation between the caller 112 and the callee 142 in real time. Listen to continue to determine the authenticity of the caller 112.

  As mentioned above, since the tricks of fraud are changing from moment to moment, it is difficult to alert all people at any time, and even ordinary people who are subject to fraud grasp all the tricks. It is impossible to respond. Here, the guide 132 who has grasped such a technique to some extent handles incoming calls on behalf of the callee 142, or monitors the conversation between the caller 112 and the callee 142 through a three-party call. It becomes possible to objectively determine whether or not the sender 112 is trying to execute a fraudulent act.

  However, for the purpose of preventing fraud, the three-party call is performed from the time when it is unknown whether or not it is a fraud, that is, from the start of the conversation between the caller 112 and the callee 142. Therefore, as described above, if the called party 142 forgets that the three-party call is made or remains unaware, the conversation is continuously heard by a third party (guide 132). There is a privacy problem. In addition, even if it is a three-party call, the guide 132 is only listening to the conversation, so it did not work as a deterrent. Thus, the present embodiment aims to protect privacy and improve deterrence against fraud. Hereinafter, specific configurations of the relay server 120 and the guide device 130 will be described, and the processing flow of the communication relay method using them will be described in detail.

(Relay server 120)
FIG. 2 is a functional block diagram showing an electrical configuration of the relay server 120. The relay server 120 includes a server memory 210, a server communication unit 212, and a server control unit 214.

  The server memory 210 is configured by a storage medium such as an HDD, a flash memory, or a RAM, and holds a program used by a server control unit 214 (to be described later) and an incoming call permission table 250. FIG. 3 is an explanatory diagram for explaining the incoming call permission table 250. In the incoming call permission table 250, an identifier (for example, a telephone number) 252 of the incoming communication device 140, one or more telephone numbers 254 that the incoming communication device 140 permits incoming calls, and a personal identification number 256 are associated with each other. .

  The server communication unit 212 connects any two or all of the transmission side communication device 110, the guidance device 130, and the reception side communication device 140 through the communication network 102. The server control unit 214 is configured by a semiconductor integrated circuit including a central processing unit (CPU), a ROM storing programs, a RAM as a work area, and the like, and relays in cooperation with the server memory 210 and other electronic circuits. Manage and control the entire server 120. The server control unit 214 also functions as a request transfer unit 230 and a communication switching unit 232. If the outgoing call (communication request) from the outgoing communication device 110 is a outgoing call to the incoming communication device 140 registered in the incoming call permission table 250, the request transfer unit 230 makes an outgoing call from the outgoing communication device 110. Various processes are executed according to the call state.

  For example, in the present embodiment, it is assumed that a call with a telephone number not notified is not accepted. Therefore, the request transfer unit 230 outputs a voice message such as “Please notify the telephone number and try again” when the calling communication device 110 makes a call without notification. Encourage re-calling by number notification.

  In addition, the calling communication device 110 makes a call with its own phone number notified, and the phone number is associated with the call receiving destination communication device 140 in the incoming call permission table 250. If so, the request transfer unit 230 directly connects the originating communication device 110 and the receiving communication device 140. The called party 142 can directly receive the incoming call with confidence as in the case of the previous call by pre-registering the calling side communication device 110 used by a reliable acquaintance or family in the incoming call permission table 250. The conversation is not heard by a third party.

  Here, the relay server 120 refers to the incoming call permission table 250 to determine whether or not to connect directly. For example, all outgoing calls notified of telephone numbers are once transferred to the guide device 130, and the guide device It may be determined whether or not a direct connection is possible based on the incoming call permission table 250 prepared in 130.

  Further, the called party 142 can directly access the relay server 120 or register a desired telephone number in the incoming call permission table 250 through the guider 132 of the guide device 130. For example, by registering a telephone number in the incoming call permission table 250 based on the advice of the guide 132 through the guidance device 130, it is possible to select only a telephone number that is appropriate for direct incoming calls. In addition, when a change in the telephone number already registered in the incoming call permission table 250 or the like occurs, by receiving advice from the guide 132 as to whether or not it is a preliminary act of a transfer fraud, for example, It is possible to prevent damages caused by wire fraud by calling again the telephone number before the change and confirming it.

  Further, in this embodiment, even when the calling communication device 110 makes a call that notifies the telephone number, the telephone number is sent to the called communication device 140 of the call destination in the incoming call permission table 250. If not associated, the request transfer unit 230 connects the calling communication device 110 and the guidance device 130 without connecting the calling communication device 110 and the receiving communication device 140.

  At this time, the guidance device 130 outputs a voice message such as “I will connect to the telephone agency service” to the calling-side communication device 110. If the caller 112 is a fraudster, there is a case where such a voice message warns if the identity is identified by any chance and terminates the call. In this way, at least the called party 142 can be protected from fraud.

  However, while a voice message such as “I connect to the telephone intermediary service” is being output, a number string is sent by the caller 112 through a tone signal (DTMF: Dual-Tone Multi-Frequency) of the caller communication device 110. Is entered, and if the number string matches the password 256 associated with the called communication device 140 in the incoming call permission table 250, the telephone number is associated without being transferred to the guidance device 130. Similarly, it is directly connected to the called communication device 140.

  This is to avoid useless transfer to the guidance device 130 when a trusted acquaintance or family is calling from the calling communication device 110 that is not registered in the incoming call permission table 250. In this case, The called party 142 can receive the incoming call directly with peace of mind, and the third party does not listen to the conversation through a three-party call. Here, the process of confirming the personal identification number 256 is provided in the relay server 120, but may be provided in the guidance device 130.

  The communication switching unit 232 executes a two-party call in which any two selected from the transmission-side communication device 110, the guide device 130, and the reception-side communication device 140 are connected and a three-party call in which all are connected. Further, the communication switching unit 232 switches between a three-party call and a two-party call between arbitrary devices in response to a switching command from the guidance device 130.

(Guide device 130)
FIG. 4 is a functional block diagram showing the electrical configuration of the guide device 130. The guidance device 130 includes an operation unit 310, a display unit 312, a voice input unit 314, a voice output unit 316, a guidance memory 318, a guidance communication unit 320, and a guidance control unit 322.

  The operation unit 310 includes a keyboard, a pointing device, a cross key, a joystick, a touch panel, and the like, and receives an operation input from the guide 132. The display unit 312 includes a liquid crystal display, an organic EL (Electro Luminescence) display, and the like, and displays information such as a telephone number of the transmitting communication device 110 connected to the guide device 130.

  The voice input unit 314 includes a microphone and takes in the voice of the guide 132 as a voice signal through A / D conversion, an encoder, and the like. The audio output unit 316 is configured by a speaker or the like, and converts an audio signal into audio and outputs it. In the present embodiment, a headset in which an audio input unit 314 and an audio output unit 316 are integrally formed is used.

  The guide memory 318 includes a storage medium such as an HDD, a flash memory, and a RAM, and holds a program used by the guide control unit 322 described later. The guide communication unit 320 establishes a communication connection with the originating communication device 110 and the receiving communication device 140 through the relay server 120. Here, the guidance device 130 is configured by a personal computer, but also has a general telephone function, and an operation according to an on-hook or an off-hook is executed according to the operation of the guide 132.

  The guidance control unit 322 is configured by a semiconductor integrated circuit including a central processing unit (CPU), a ROM storing programs, a RAM as a work area, and the like, and cooperates with the guidance memory 318 and other electronic circuits. Manage and control the entire device 130. The guidance control unit 322 also functions as an information acquisition unit 330, a guidance connection unit 332, an information transmission unit 334, a three-party communication execution unit 336, and a three-party communication notification unit 338.

  The information acquisition unit 330 is a transmission that is one or both of the information on the transmission side communication device 110 and the information on the caller 112 of the transmission side communication device 110 according to the connection between the transmission side communication device 110 and the guide device 130. Get information. Here, the information of the calling side communication device 110 is a telephone number, a calling time, a calling position (address) of the calling side communication device 110, and the information of the calling party 112 of the calling side communication device 110 is the information of the calling party 112. Name, affiliation name, requirements, gender, age, etc. Among these, the information of the caller 112 may be heard verbally from the caller 112 by the guide 132, or the voice of the caller 112 is recorded or converted into text information in association with the call, and the information It may be acquired as data. If the caller 112 is a fraudster, there is a case where the caller is warned that the identity or voice is not specified in response to such an inquiry from the guide 132 and the call is terminated. In this way, at least the called party 142 can be protected from fraud.

  If the guider 132 can judge the authenticity of the caller 112 based on the transmission information regarding the caller 112 and can show the view that it is not a fraudulent act, the connection between the guide device 130 and the receiving communication device 140 is first performed. Perform the operation.

  On the other hand, if it is determined in the authenticity determination of the caller 112 that the possibility of fraud is high, the guide 132 puts the connection with the caller communication device 110 on hold and asks the information acquisition unit 330 to A dummy voice message such as “I will be assigned to the telephone number” is output, and processing is performed as if the calling party communication device 140 is called. After that, after outputting a voice message such as “I will call you back for absence”, the guide 132 hears more detailed transmission information and ends the conversation. Here again, when the caller 112 is a fraudster, the caller 112 may be alerted to the question of the guide 132 and end the call. When the end-of-call process is completed, the guide 132 performs a connection operation between the guide device 130 and the receiving side communication device 140, and indicates that the call has been made as described above and the outgoing information. To communicate.

  When the connection operation between the guide device 130 and the receiving side communication device 140 is performed, the guide connection unit 332 maintains the connection between the transmission side communication device 110 and the guide device 130 in accordance with the operation. 130 and the called communication device 140 are connected. At this time, the guide connection unit 332 places the caller on hold on the caller communication device 110 and outputs a voice message such as “I will relay to the phone number you dialed” to the caller communication device 110. .

  The information transmission unit 334 transmits the transmission information to the receiving communication device 140. Specifically, the information transmission unit 334 maintains a state in which the guider 132 and the called party 142 can talk and prompts the guider 132 to transmit the transmission information, or the transmission information is converted into electronic data such as a voice message or text information. Or transmitted to the receiving side communication device 140. Then, after the transmission information is transmitted to the called party 142, the system proceeds to the three-party call shown below. However, if the called party 142 shows an opinion such as “it is an acquaintance and can be transferred” based on the outgoing information, the subsequent three-party call is stopped, and the information transmission unit 334 receives the incoming side communication device 110 and the incoming call. The side communication device 140 is directly connected.

  The three-party communication execution unit 336 issues a switching instruction to the relay server 120 to execute a three-party call, and performs a two-party call between the caller communication device 110 and the guide device 130 and the guide device 130 and the callee communication device 140. Is switched to a three-party call of the calling communication device 110, the receiving communication device 140, and the guidance device 130. At this time, the three-party communication execution unit 336 outputs a voice message such as “Starts a three-party call” to the transmission-side communication device 110 and the reception-side communication device 140, and the three-party call is executed. May be notified in advance.

  Here, the three-party call is time-limited, and if there is no additional operation before a predetermined time (for example, three minutes) elapses, the three-party communication execution unit 336 makes the three-party call with the caller communication device 110 and the incoming call. Switch to a two-party call with the side communicator 140. By making the three-party call timed in this way, the called party 142 can be protected from fraud and the privacy problem can be minimized. In addition, during a three-party call, the guide 132 of the guidance device 130 only monitors the voice of the calling communication device 110 and the receiving communication device 140, and the voice of the guide 132 is transmitted to the calling communication device 110 and the incoming call. Is not output to the side communication device 140. However, the voice may be output only from the guidance device 130 to the receiving communication device 140 while maintaining the three-party call.

  The guide 132 monitors the call between the calling side communication device 110 and the called side communication device 140 through a three-party call and continuously determines the authenticity of the caller 112. If there is no problem in the content of the conversation, the guide 132 ends the three-party call after the predetermined time has elapsed. However, if suspicious, the guide 132 can extend the predetermined time and continue the three-party call.

  Instead of outputting the voice of the guide 132 to the three-party call, the three-party communication notifying unit 338 transmits a mechanical sound, for example, a sound such as “Pupp ...”, during the three-party call. The caller 112 and the callee 142 are notified that the three-way call is being executed through the caller communication device 110 and the callee communication device 140.

  In this way, while the three-party call is being performed, by notifying the callee 142 to that effect, the callee 142 always confirms that the third party (guide 132) is listening to the conversation. You can be conscious and protect your privacy. Also, by notifying the caller 112 that the three-party call is being executed, the caller 112 can no longer perform fraudulent activity, being aware that the call is being monitored by a third party. It becomes possible to improve deterrence against fraud.

  In addition, the three-way communication notifying unit 338 stops the output of the mechanical sound indicating that the three-party call is being executed after a lapse of a predetermined time during which the three-party call is maintained unless the guide 132 extends the three-party call. To do. The successful completion of the three-party call mechanical sound is equivalent to the guide 132 showing that the caller 112 is not a fraudster. The conversation with the caller 112 can be continued with peace of mind. Further, after the output of the mechanical sound is stopped, there is no worry that the third party (guide 132) is listening to the conversation, so that the called party 142 can freely enjoy the conversation.

  In addition, when the three-party communication execution unit 336 receives an operation input from the guide 132 while executing the three-party call, the three-party communication is performed in accordance with the guidance device 130 and the receiving communication device 140. Can be switched to a two-party call. At this time, the three-party communication notifying unit 338 notifies the calling-side communication device 110 to that effect. However, it is preferable to notify the callee 142 in advance that the guide 132 may interrupt the three-party call.

  For example, the guide 132 listens to the conversation between the caller 112 and the callee 142, and the caller 112 selects a suspicious keyword such as “Oleore”, “Zidan”, “Ginkgo”, “Furikomi”, “Kouzabango”, etc. If the caller 112 determines that the caller 112 is suspected of being a fraudster, the caller interrupts the three-party call, switches to a two-party call between the guidance device 130 and the receiving communication device 140, and notifies the callee 142 of the call. To do. At this time, the guide 132 may give advice to the callee 142 to determine whether the caller 112 is a fraudster. For example, when the caller 112 is called relative, the user can check whether information that only the relative knows can be answered correctly, or when the caller 112 is called a public facility employee, You may give instructions such as calling the telephone number of the facility for confirmation.

  In addition, during the two-party call between the guidance device 130 and the receiving communication device 140, the calling communication device 110 is connected to a monitor sound or “monitoring device” indicating that a two-party call is being executed. Is output. When the guider 132 finishes transmitting information to the called party 142, the three-party communication execution unit 336 returns to the three-party call based on the operation of the guider 132, or the guide device 130 and the calling side communication device 110 And the guide 132 and the caller 112 are made to talk again.

  From such a mechanical sound or voice message, the caller 112 recognizes that he is suspected. Therefore, when the caller 112 is a fraudster, there is a case where the call is terminated while being warned that the identity is specified. In this way, at least the called party 142 can be protected from fraud.

  However, the three-way call is an objective determination when the general callee 142 alone cannot simply determine whether the call is a good call or a bad call. There is no need to execute for a predetermined time until the called party 142 is obviously not a fraudster, such as when the called party 142 knows the calling party 112, and also lacks privacy protection.

  Therefore, when the three-party communication execution unit 336 receives a guide disconnection request (corresponding to a disconnection request) from the receiving communication device 140 while executing the three-party call, the three-party communication is performed. And switching to the two-party call between the receiving side communication device 140. With this configuration, if the callee 142 is convinced that the caller 112 is legitimate in his judgment, he / she can switch any switch (for example, “*” switch) of the callee communication device 140 during the three-way call. By stopping, it is possible to forcibly end the three-party call, and then continue the conversation with the caller 112 without worrying about the presence of a third party (guide 132). In addition, when the three-party communication execution unit 336 terminates the three-party call, the three-party communication notification unit 338 stops outputting the mechanical sound indicating that the three-party call is performed, and the three-party call is terminated. Is notified.

  In addition, the three-party communication execution unit 336 can receive the incoming communication device if the callee 142 desires even after the three-party call is switched to the two-party call after a predetermined time has elapsed since the start of the three-party call. In response to the switching request from 140, the two-party call between the calling communication device 110 and the receiving communication device 140 is switched to the two-party call between the guide device 130 and the receiving communication device 140.

  For example, it is assumed that the guide 132 determines that there is no suspicious point in the conversation between the caller 112 and the callee 142 and ends the three-party call. At this time, the caller 112 may first reassure the caller 142 and the guide 132 and execute a fraud after the machine sound of the three-way call is not output. However, since the three-way call is automatically canceled when the predetermined time has elapsed, the guide 132 can no longer listen to the conversation. Therefore, when the called party 142 feels suspicious even a little, it is possible to ask for at least the objective view of the guide 132 by communicating to that effect to the guide 132.

  Further, in response to the switching request of the called party 142, while the two-party call between the guide device 130 and the called communication device 140 is being executed, the three party communication notification unit 338 sends the two calling parties to the calling communication device 110. A mechanical sound indicating that the call is being executed and a voice message such as “Connecting to supervisor” are notified. From such a mechanical sound or voice message, the caller 112 recognizes that he is suspected. Therefore, when the caller 112 is a fraudster, there is a case where the call is terminated while being warned that the identity is specified. In this way, at least the called party 142 can be protected from fraud.

  While the three-way call is being executed by the relay server 120 and the guidance device 130 described above to prevent fraud, the caller 142 is notified of the fact to protect the privacy, and the three-party call is executed. It is possible to improve the deterrence of fraudulent activity by notifying the sender 112 of the fact.

(Communication relay method)
5 and 6 are flowcharts showing the overall flow of the communication relay method, and FIG. 7 is a sequence diagram showing a typical example of the communication relay method. In particular, FIG. 5 shows communication relay processing in the relay server 120, and FIG. 6 shows communication relay processing in the guidance device 130.

  Referring to FIG. 5, when a call is made from any originating communication device 110 to the terminating communication device 140 registered in advance in the relay server 120 (YES in S400), the request transfer unit 230 of the relay server 120 Then, it is determined whether or not the call is accompanied by notification of a telephone number (S402). If there is no notification of the telephone number (NO in S402), the request transfer unit 230 outputs a voice message so as to notify the telephone number and call again (S404), and the communication relay process is terminated.

  When the telephone number is notified (YES in S402), the request transfer unit 230 calls the telephone whose telephone number is associated (registered) with the called communication device 140 of the call destination in the incoming call permission table 250. It is determined whether or not the number is 254 (S406). If it is the telephone number 254 associated with the callee communication device 140 of the call destination (YES in S406), the request transfer unit 230 directly connects the caller communication device 110 and the callee communication device 140 ( S408), the communication relay processing ends. As described above, by directly connecting the pre-registered caller communication device 110 and the callee communication device 140, only the secure call is provided to the callee 142, and the privacy problem caused by the three-party call is avoided. can do.

  If it is not the telephone number 254 associated with the called communication device 140 of the call destination (NO in S406), a voice message such as “Connect to the telephone intermediary service” is output to the calling communication device 110. (S410). Then, the request transfer unit 230 receives a tone signal corresponding to the personal identification number from the originating communication device 110 while the predetermined personal identification number input period has not elapsed (NO in S412), and the personal identification number is It is determined whether or not the personal identification number 256 registered in the incoming call permission table 250 is matched (S414). If the personal identification number matches (YES in S414), the calling communication device 110 and the receiving communication device 140 Is directly connected and the communication relay process is terminated (S408), and if the password input period elapses without input or the password does not match (YES in S412), the calling communication device 110 and the guidance device 130 is connected (S416).

  Even after the communication relay process has been transferred to the guidance device 130 in this way, until the connection is released (NO in S418), when a switching command is received from the guidance device 130 (S420), the communication switching unit 232 switches between a two-party call connecting any two selected from the originating communication device 110, the guidance device 130, and the receiving communication device 140, and a three-party call connecting all (S422). When the connection is released (YES in S418), the communication relay process ends.

  Referring to FIG. 6, the information acquisition unit 330 of the guide device 130 transmits the call from the caller communication device 110 or the caller communication device 110 when the caller communication device 110 and the guide device 130 are connected (YES in S450). The transmission information which is the information of the person 112 is acquired (S452). Here, when the guide 132 determines that the caller 112 is a suspicious person and performs a disconnection operation of the receiving communication device 140 (YES in S454), the calling communication device 110 is put on hold (S456), and finally Then, the connection is disconnected and the communication relay process is terminated. Also, once the guide 132 determines that the caller 112 is not a suspicious person and performs a connection operation to the receiving communication device 140 (YES in S458), the guide connection unit 332 receives the incoming call from the guide device 130. The side communication device 140 is connected, and the information transmission unit 334 transmits the transmission information to the reception side communication device 140 (S460).

  Then, the three-party communication execution unit 336 outputs a voice message such as “Starts a three-party call” to the originating communication device 110 and the receiving communication device 140 (S462), and the three-party communication to the relay server 120. A two-party call between the caller communication device 110 and the guide device 130 and a two-party call between the guide device 130 and the callee communication device 140 are exchanged with the caller communication device 110. Switching to a three-way call between the receiving communication device 140 and the guide device 130 (S464).

  In addition, the three-party communication notification unit 338 notifies that the three-party call is being executed through the receiving communication device 140 and the calling communication device 110 while the three-party call is being executed (S466). Thus, the called party 142 can always be aware that a third party (guide 132) is listening to the conversation, and can protect privacy. Also, by notifying the caller 112 that the three-party call is being executed, the caller 112 can no longer perform fraudulent activity, being aware that the call is being monitored by a third party. It becomes possible to improve deterrence against fraud.

  While such a three-party call is being executed, the guide 132 determines that the caller 112 may be a suspicious person based on the conversation between the caller 112 and the callee 142, and interrupts the two-party call. When the operation is performed (YES in S468), the three-party communication execution unit 336 switches the three-party call to a two-party call between the guide device 130 and the receiving communication device 140 (S470), and the three-party communication notification unit 338 Then, the notification output that the three-party call is being executed is terminated, and the calling communication device 110 is notified that the call is a two-party call (S472). When the advice by the guider 132 is finished and the guider 132 interrupts the three-party call (YES in S474), the three-party call execution unit 336 switches the two-party call to the three-party call ( (S476) The three-party communication notification unit 338 notifies that the three-party call is being executed while the three-party call is being executed (S478).

  Further, if there is a connection disconnection request (call termination) from the receiving communication device 140 while the three-party call is being executed (YES in S480), the communication relay process is terminated. Further, if there is a guidance disconnection request (excluding the guidance device 130) of the receiving communication device 140 while the three-party call is being executed (YES in S482), the three-party communication execution unit 336 causes the transmitting communication device 110 to And switching to the two-party call between the receiving side communication device 140 (S484). And the alerting | reporting that the three-way call is performed is complete | finished. In this way, the called party 142 can switch from a three-party call to a two-party call with the caller 112 at his / her will and timing, thereby avoiding privacy problems.

  If there is no guidance disconnection request from the called communication device 140 while the three-party call is being executed (NO in S482), it is determined whether or not the elapsed time of the three-party call has exceeded a predetermined time (S486). While the elapsed time of the three-party call has not reached the predetermined time (NO in S486), the two-party call interruption operation determination process in step S468 is repeated. When the predetermined time is reached (YES in S486), the three-party call is switched to the two-party call between the caller communication device 110 and the callee communication device 140, and the notification that the three-party call is being executed is also terminated. (S484). The successful completion of the three-party call mechanical sound is equivalent to the guide 132 showing that the caller 112 is not a fraudster. The conversation with the caller 112 can be continued with peace of mind.

  If the called party 142 is suspicious of the calling party 112 and makes a switching request through the receiving side communication device 140 while the two-party call is being executed (YES in S488), the three-party communication execution unit 336 The two-party call between the communication device 110 and the called communication device 140 is switched to the two-party call between the guidance device 130 and the called communication device 140 (S490), and the three-party communication notification unit 338 calls the calling communication device 110. This is notified (S492). Then, the callee 142 receives advice from the guider 132, and thereafter, when there is a connection request from the callee communication device 140 (YES in S494), the three-party communication execution unit 336 again calls the caller communication device 110. And return to the two-party call with the receiving communication device 140 (S496).

  If there is a connection disconnection request (call termination) from the receiving communication device 140 while the two-party call is being executed (YES in S498), the communication relay process is terminated.

  Subsequently, referring to FIG. 7, a typical example of the communication relay method is shown. When any originating communication device 110 executes a call to the receiving communication device 140 (S500), first, the relay server 120 is used. The call is confirmed. If the telephone number of the calling side communication device 110 is not registered in the incoming call permission table 250, but the telephone number is notified, the request transfer unit 230 of the relay server 120 makes a call in response to the call. The side communication device 110 and the guide device 130 are connected (S502). On the guide device 130 side, the transmission information is acquired through the information acquisition unit 330 (S504), the guide connection unit 332 connects the guide device 130 and the receiving side communication device 140 (S506), and the transmission information is transmitted through the information transmission unit 334. Is transmitted to the called communication device 140 (S508).

  Subsequently, the three-party communication execution unit 336 executes a three-party call between the transmission-side communication device 110, the reception-side communication device 140, and the guide device 130 (S510), and the three-party communication notification unit 338 performs the call. 140 and calling side communication device 110 are notified that a three-party call is being executed (S512). When the predetermined time has elapsed, the three-party call is switched to a two-party call between the caller communication device 110 and the callee communication device 140 (S514), and the callee 142 is a third party (guide 132). The conversation with the caller 112 can be continued without being aware of the existence.

  In this way, while a three-party call is being executed to prevent fraud, the caller 112 is notified of that fact to protect privacy and the caller 112 is notified that the three-party call is being executed. It is also possible to improve the deterrence of fraudulent activity by notifying.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to this embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, in the above-described embodiment, the “call” has been particularly described as the communication. However, chat and various existing communication formats can also be adopted. By replacing the two-party call with the three-party communication or the two-party communication, it is possible to obtain the same effect as the present embodiment.

  Note that each step in the communication relay method of this specification does not necessarily have to be processed in time series in the order described in the flowcharts and sequence diagrams, and may include processing in parallel or by a subroutine.

  INDUSTRIAL APPLICABILITY The present invention can be used for a communication relay system and a guidance device that relays between a transmitting side communication device and a receiving side communication device.

DESCRIPTION OF SYMBOLS 100 ... Communication relay system 110 ... Origination side communication apparatus 112 ... Originator 120 ... Relay server 130 ... Guidance device 132 ... Guidance device 140 ... Termination side communication apparatus 142 ... Termination party 230 ... Request transfer part 232 ... Communication switching part 330 ... Information Acquisition unit 332 ... guide connection unit 334 ... information transmission unit 336 ... three-party communication execution unit 338 ... three-party communication notification unit

Claims (5)

A communication relay system including a relay server that relays between a caller communication device and a callee communication device, and a guide device that can be connected to the caller communication device and the callee communication device through the relay server,
The relay server is
A request transfer unit that receives a communication request to the callee communication device registered in advance from the caller communication device, and connects the caller communication device and the guide device;
The guide device includes:
A guide connection unit for connecting the guide device and the receiving communication device;
A three-party communication execution unit that connects the calling-side communication device, the called-side communication device, and the guide device so that three-way communication is possible;
While performing the three-party communication, a three-party communication notification unit for notifying that the three-party communication is being performed through the incoming communication device and the outgoing communication device,
Equipped with a,
The three-party communication execution unit performs the three-party communication with the two-way communication between the calling-side communication device and the called-side communication device when a predetermined time elapses after the three-party communication is executed. Switch to
Communication relay system the tripartite communication notification unit, when the three-way communication is switched to the two-party communication, characterized that you exit the notification of said a tripartite communication. A guide device connectable to the calling communication device and the receiving communication device through a relay server that relays the calling communication device and the receiving communication device,
A guidance connection unit for connecting the guidance device and the receiving communication device;
A three-party communication execution unit that connects the calling-side communication device, the called-side communication device, and the guidance device so that three-way communication is possible;
While performing the three-party communication, a three-party communication notification unit for notifying that the three-party communication is being performed through the incoming communication device and the outgoing communication device,
Equipped with a,
The three-party communication execution unit performs the three-party communication with the two-way communication between the calling-side communication device and the called-side communication device when a predetermined time elapses after the three-party communication is executed. Switch to
The tripartite communication notification unit, when the three-way communication is switched to the two-party communication, the guiding device characterized that you exit the notification of said a tripartite communication. In addition, it has an operation unit that accepts the operation input of the guide who is a user,
The three-party communication execution unit converts the three-party communication into two-party communication between the guide device and the receiving communication device in accordance with the operation input of the guide during execution of the three-party communication. switching,
The guidance device according to claim 2, wherein the three-party communication notification unit notifies the fact through the transmission side communication device. The three-party communication execution unit receives a disconnection request of the receiving communication device while executing the three-party communication, and performs the three-party communication between the calling communication device and the receiving communication device. Switch to two-way communication,
The guidance device according to claim 2, wherein the three-party communication notification unit ends notification that the three-party communication is being performed. The three-party communication execution unit receives a switching request for the called communication device even after the three-party communication is switched to two-party communication between the calling communication device and the called communication device. Then, switching to two-party communication between the guidance device and the called communication device, and the three-party communication notification unit notifies the fact through the calling communication device . The guide device according to item 1 .

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