JP2016163285A - Troublesome telephone countermeasure system and troublesome telephone countermeasure method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To identify whether a caller is a malicious caller or a well-meaning caller more accurately than before and reduce the possibility of a receiver being damaged even when the identification cannot be done.SOLUTION: A troublesome telephone countermeasure system 1, when a connection is requested from a caller terminal 102 to a contractor terminal 103, when a telephone number of the caller terminal 102 is not in a white list, first performs determination using a password, when the password does not match, discards the connection request, and when the password matches, establishes a three-way calling or transmits a watching call to a receiver (contract receiver 103).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for preventing unwanted calls.

  In the past, there have been many people who suffer from mental and financial damages due to nuisance calls. Here, a nuisance call refers to a telephone to which a recipient suffers nuisance (damage), such as a call from a person who attempts a fraud scam or a call from a person who conducts malicious business activities.

  Hereinafter, the caller of the nuisance call is referred to as “malicious caller”, and the caller of the bona fide call is referred to as “good faith caller”. In addition, words and phrases frequently used by malicious callers in nuisance calls are referred to as “bad keywords”.

So far, various technologies have been devised as countermeasures against nuisance calls. Hereinafter, an example of a transfer fraud will be described as a nuisance call.
As countermeasures for wire fraud, for example, “the phone number of the mobile phone has changed”, “the cold has caught a cold”, “depending on the circumstances (debt, traffic accident etc.) If you have detected a bad keyword by voice recognition of the phone content, you will be notified of the warning by phone, e-mail, etc. There are technologies (Patent Documents 1 and 2).

  In addition, there is a technique using a black list (for example, a list of phone numbers of malicious callers) or a white list (for example, a list of phone numbers of good faith callers) (see Patent Document 3). In this case, for example, when a phone call is received, if the phone number is on the black list, it is determined that the call is from a malicious caller, and the incoming call is rejected. Also, if the phone number is on the white list, it can be determined that the call is from a bona fide caller, and the call can be connected to the recipient without worry.

  In addition, there is also a technology called a nuisance call treatment service that performs registration operation from the telephone immediately after receiving a nuisance call and automatically sends an incoming call rejection message to a call from the same telephone number thereafter (non-patent) Reference 1).

  According to these technologies, a certain degree of effect can be obtained as a countermeasure against nuisance calls.

JP 2006-196949 A JP 2006-324715 A JP 2011-160029 A

“Junk Calling Service” [online], 2015, East Nippon Telegraph and Telephone Corporation, [February 19, 2015 search], Internet <URL: http://web116.jp/shop/benri/meiwaku/ mei_00.html>

  However, the techniques described in Patent Documents 1 and 2 have a problem that a word issued by a malicious sender is invalid if it is not registered as a bad keyword. And, the tricks of wire fraud are getting more sophisticated every day, and the words that malicious callers make are the ones mentioned above as bad keywords, as well as “Your bank account is being abused.” , “I have a tax refund (named a city hall employee)”, “(I gave a station employee), I keep your son's bag”, etc. New things appear one after another. Therefore, it is practically impossible to prepare all bad keywords in advance.

  In addition, in the technique described in Patent Document 3, it is practically impossible to put all malicious callers on the black list. Therefore, a method of rejecting a call from a telephone number on the black list, etc. Then, there is a problem that it is invalid for malicious callers who are not on the blacklist. In addition, the method in which only a call from a good-caller on the white list is connected to the recipient has a problem that a call from a good-caller not on the white list is repelled.

  In addition, in the technique described in Non-Patent Document 1, it is necessary to perform a registration operation (such as calling a special number for 144) from a telephone immediately after receiving a nuisance call. In addition, there is a problem that no countermeasure can be taken unless the registration operation is performed. Another problem is that the recipient may not be aware of the nuisance call.

  Therefore, the present invention specifies whether the caller is a malicious caller or a bona fide caller with higher accuracy than before without placing a heavy burden on the telephone receiver, and even if it cannot be specified. It is an issue to reduce the possibility that a person will be damaged.

  In order to solve the above-mentioned problem, the present invention is a nuisance call countermeasure system used for a call from a caller terminal to a receiver terminal, and is a list of phone numbers of bona fide callers for each receiver terminal. Storage means for storing a white list, secret words, and a third party telephone number list that is a list of third party candidate telephone numbers participating in a three-party call; and from the caller terminal to the receiver terminal A white list determination unit that determines whether a telephone number of the caller terminal is on a white list of the receiver terminal stored in the storage unit when there is a telephone connection request; When the determination result using the list is negative, the password request means for requesting a password to the caller terminal and the words received from the caller terminal are stored in the storage means. If it does not match, if it does not match, a password determination means for discarding the connection request, and a third party of the receiver terminal stored in the storage means if the password matches Third party determination means for determining whether or not there is a third party capable of three-party calling using a telephone number list, and when there is no third party capable of three-party calling, the connection request is discarded. When there is a third party capable of the three-party call, there is provided a three-party call establishing means for establishing a three-party call including the third party.

According to this, when there is a call connection request from the caller terminal to the receiver terminal, if there is no phone number of the caller terminal in the white list, first the determination using the secret word is performed, and the password is confirmed. If not, discard the connection request. Then, if the secret word matches, if there is no third party capable of three-way calling, the connection request is discarded. If there is a third party that can make a three-party call, establish a three-party call including the third party. That is, the recipient can make a three-way call with a trusted third party registered in advance.
Therefore, it is possible to identify whether the caller is a malicious caller or a bona fide caller without imposing a heavy burden on the receiver, and the receiver can be damaged even if it cannot be specified. Can be reduced.

  The present invention is also a nuisance call countermeasure system used for a call from a caller terminal to a receiver terminal, wherein for each receiver terminal, a white list, a secret word, a nuisance, which is a list of good faith caller telephone numbers. When there is a request for connection to the receiver terminal from the caller terminal and the storage means storing the watch guidance and the voiceprint DB of the bona fide caller that are alert messages regarding the telephone, The whitelist determination means for determining whether the telephone number of the receiver terminal is on the whitelist of the recipient terminal stored in the storage means, and the determination result using the whitelist is negative In addition, for the caller terminal, a password request means for requesting a password, and a word received from the caller terminal matches the password stored in the storage means. If the password does not match, a password determination unit that discards the connection request, a call establishment unit that establishes a call and records the call when the password matches, and the call Is finished, it is determined whether or not the voiceprint of the recorded voice matches with any voiceprint in the voiceprint DB stored in the storage means at a matching rate equal to or higher than a predetermined threshold, and the predetermined threshold And a watch guidance transmitting means for sending the watch guidance stored in the storage means to the recipient terminal when the match rate does not match.

According to this, when there is a call connection request from the caller terminal to the receiver terminal, if there is no phone number of the caller terminal in the white list, first the determination using the secret word is performed, and the password is confirmed. If not, discard the connection request. If the secret matches, the call is established, the call is recorded, and after the call is finished, whether the voice print of the recorded voice matches any voice print in the voice print DB with a match rate equal to or higher than a predetermined threshold. If it does not match, watch guidance is transmitted to the recipient terminal. That is, the receiver can detect the possibility that the telephone call was a nuisance call by listening to the watching guidance.
Therefore, it is possible to identify whether the caller is a malicious caller or a bona fide caller with higher accuracy than before without imposing a heavy burden on the call recipient, and even if the call cannot be identified, the recipient is damaged. The possibility of receiving can be reduced.

  Further, in the present invention, the storage unit further stores a handling list having a plurality of combinations of keywords and call destinations, and after the watching guidance transmitting unit transmits the watching guidance to the recipient terminal, Referring to the handling list stored in the storage means, and transmitting a message to the receiver terminal for prompting connection to the call destination corresponding to the keyword matching the word received from the receiver terminal, and receiving the receiver If there is a call connection request from the terminal, it is further characterized by further comprising coping means for establishing a call between the recipient terminal and the call connection destination.

According to this, after transmitting the watching guidance to the receiver terminal, a message prompting the call connection to the call connection destination corresponding to the keyword matching the word received from the receiver terminal is transmitted to the receiver terminal, and the receiver If there is a call connection request from the terminal, a call between the recipient terminal and the call connection destination is established.
Therefore, the receiver can consult with the call connection destination, and the possibility of being damaged can be further reduced.

  According to the present invention, it is possible to specify whether a caller is a malicious caller or a bona fide caller with higher accuracy than before without receiving a heavy burden on a telephone receiver, and even if it cannot be specified The possibility that a person will be damaged can be reduced.

1 is an overall configuration diagram including a nuisance call countermeasure system of an embodiment. It is the first half of explanatory drawing of the outline | summary of this embodiment. It is the second half of explanatory drawing of the outline | summary of this embodiment. (A) is a figure showing an example of contractor information # 1. (B) is a figure showing an example of telephone call history DB. (C) is a figure which shows the example of a creation processing flow of contractor information # 1. (A) is a figure showing an example of contractor information # 2. (B) is a figure showing an example of contractor information # 3. (C) is a figure showing an example of contractor information # 4. (D) is a figure which shows the example of voiceprint DB. (E) is a figure which shows the example of prior guidance file DB. (A) is a figure showing an example of watching guidance file DB. (B) is a figure which shows the example of a countermeasure list | wrist. In this embodiment, it is a figure (1/3) which shows the example of the flow of the process which each apparatus performs. In this embodiment, it is a figure (2/3) which shows the example of the flow of the process which each apparatus performs. In this embodiment, it is a figure (3/3) which shows the example of the flow of the process which each apparatus performs.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment for implementing a nuisance call countermeasure system according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a caller terminal 102, a contractor terminal 103, a relative terminal 104, a consultation center terminal 105, a police terminal 106, and a nuisance call countermeasure system 1 are connected to a network 101.

The caller terminal 102 is a telephone terminal used by a caller.
The contractor terminal 103 is a telephone terminal used by a contractor (recipient) of the nuisance call countermeasure system 1 and receives a call from the caller terminal 102.
Note that the caller terminal 102 and the contractor terminal 103 are merely called for convenience in the present embodiment, and there is no difference as a device.

The relative terminal 104 is a communication terminal used by a contractor's relative, and includes a telephone terminal and a personal computer.
The consultation center terminal 105 is a communication terminal used by the consultation center, and includes a telephone terminal and a personal computer.
The police terminal 106 is a communication terminal used by the police, and includes a telephone terminal and a personal computer.

  The nuisance call countermeasure system 1 is a system used for a call from a caller terminal 102 to a contractor terminal 103 (recipient terminal), and includes a call control server 2, a preliminary guidance device 3, a voiceprint analysis server 4, and a mail server 5. A watch call server 6 and a Web server 7.

  The call control server 2 plays a central role in the nuisance call countermeasure system 1 and exhibits each function of nuisance call countermeasures in addition to call connection control between the caller terminal 102 and the contractor terminal 103 (details will be described later). The call control server 2 includes an input / output interface and a communication interface (not shown) in addition to the control unit 21 and the storage unit 22.

The storage unit 22 stores a call content storage DB (Data Base) 221, contractor information 222, a call history DB 223, and a handling list 224.
The call content storage DB 221 is a database that stores call content between telephone terminals including the caller terminal 102 and the contractor terminal 103.

  The contractor information 222 is information related to the contractor of the nuisance call countermeasure system 1 and includes contractor information # 1 to # 4.

  The contractor information # 1 is a white list that is a list of good faith caller telephone numbers for each contractor. For example, as shown in FIG. 4A, information in which an Index and a whitelist calling number are associated with each other. It is. This contractor information # 1 is created based on the processing flow of FIG. 4C, for example. The contracted party number of interest is searched from the called number in the call history DB 223 (FIG. 4B, details will be described later) (step S41), and if the call end time is within n months (Yes in step S42), the calling number Is registered in the contractor information # 1 (step S43), and the process proceeds to step S44. If the end time is not within n months (No in step S42), the process proceeds to step S44. In step S44, it is determined whether it is the last line. If Yes, the process ends. If No, the process returns to step S41. The contractor information # 1 is not limited to such automatic creation, but may be manually created and processed by visual confirmation of the contractor itself.

  For example, as shown in FIG. 5A, the contractor information # 2 includes (1) a three-way call with a relative and (2) after a normal call in order to appropriately follow the contractor as a countermeasure against annoying calls. This is information for selecting the connection form of two types of telephones, a watch call. In the contractor information # 2, for example, which of (1) and (2) is selected for each contractor is set in advance.

“(1) Three-party call with relative” refers to a caller (user of caller terminal 102; the same applies to the following) and a contractor (user of contractor terminal 103; the same applies to the following) to a relative (user of relative terminal 104). This is a telephone connection form by three parties with details added (details will be described later).
“(2) Watching call after normal call” means a voice print analysis of the voice from the caller terminal 102 after the call by the caller and the contractor, or depending on the result of the voice print analysis, the relative, the consultation center, the police It is a connection form that guides the contractor to automatic connection to (details will be described later).

  The contractor information # 3 is a third party telephone number list that is a list of candidate telephone numbers of third parties (relatives) who participate in the three-party call. For example, the contractor information # 3 is shown in FIG. As described above, this is information in which an Index, a third party candidate connection number (telephone number), and a mail address are associated with each other.

  The contractor information # 4 is, for example, secret information for each contractor as shown in FIG. The secret message candidate for each contractor is notified in advance of this secret word.

  The call history DB 223 is information related to the history of calls made via the network 101, and is information in which the calling number, called number, call end time, and call time are associated with each other as shown in FIG. 4B, for example. .

  The handling list 224 is information on handling methods for appropriately following the contractor as a countermeasure against nuisance calls, and is a handling list having a plurality of combinations of keywords and call connection destinations. For example, as shown in FIG. This is information in which a handling keyword example and a handling content example are associated with each other.

  Next, each of the devices denoted by reference numerals 3 to 7 will be described. However, the points of each device having a control unit, a storage unit, an input / output interface, a communication interface, etc. are omitted in FIG. The stored information and functions will be described.

The prior guidance device 3 is a device that performs various types of voice guidance for the caller terminal 102, and stores the prior guidance file DB31.
For example, as shown in FIG. 5E, the prior guidance file DB 31 stores a combination of a guidance type, a guidance file name, and a guidance content example (a watching guidance that is a warning message regarding a nuisance call).

The voiceprint analysis server 4 is a device that performs voiceprint analysis using a voiceprint DB 41 that stores a voiceprint of a whitelist applicable person (good faith sender) for each contractor.
For example, as shown in FIG. 5D, the voiceprint DB 41 stores combinations of Index, voiceprint, and name.

The Web server 7 stores an access call content storage DB 71.
The access call content storage DB 71 is a database that stores the same call content as the call content storage DB 221 and is accessible from the relative terminal 104, the consultation center terminal 105, and the police terminal 106.

The mail server 5 stores the web server URL 51.
The Web server URL 51 stores a URL (Uniform Resource Locator) for accessing the access call content storage DB 71 of the Web server 7.

The watch call server 6 is a server for making a watch call, and stores the watch guidance file DB 61.
The watch guidance file DB 61 stores voice guidance when making a watch call to the contractor terminal 103. For example, as shown in FIG. 6A, a combination of a voiceprint match rate, a guidance file name, and a guidance content example is stored. Remember.

  Next, an outline of the operation of the nuisance call countermeasure system 1 will be described with reference to FIGS. 2 and 3 (details will be described later in the description of FIGS. 7 to 9). Here, it is assumed that the latter is selected from “(1) Three-party call with relative” and “(2) Watch call after normal call”.

  As shown in FIG. 2, when there is a call (connection request) from the caller terminal 102 to the contractor terminal 103 (step S1), this service ( The service by the nuisance call countermeasure system 1 is not activated (step S2).

  If the calling number is not in the call history within the past n months, the preliminary guidance device 3 sends a secret request guidance to the caller terminal 102 (step S3). If a secret word is returned from the caller terminal 102 (step S4), the call control server 2 determines the secret word with reference to the contractor information # 4 (FIG. 5C) of the contractor information 222 (step S5). ) If the secret is different, the incoming call is rejected (step S6).

  If the password matches, the advance guidance device 3 sends advance notice for recording advance notice to the caller terminal 102 (step S7), and establishes a call between the caller terminal 102 and the contractor terminal 103 (step S8).

During the call, the call content is stored in the call content storage DB 221 (step S9), and after the call ends, the voice print analysis server 4 refers to the voice print DB 41 to obtain a voice print match rate (for convenience of explanation, an integer value is used). Is calculated (steps S10 and S11).
If the match rate is 80% or more, the watch call server 6 does not make a watch call to the contractor terminal 103 (step S12 in FIG. 3).

  If the match rate is less than 80%, the watch call server 6 sends a watch call to the contractor terminal 103 (step S13). The processes after step S13 shown in the lower part of FIG. 3 will be described later together with the description of FIGS.

  Next, details of the operation of the nuisance call countermeasure system 1 will be described with reference to FIGS. The operating subject of the call control server 2 is the control unit 21, but for the sake of brevity, the operating subject will be described as the call control server 2 below.

  When the call control server 2 receives a connection request from the caller terminal 102 to another telephone terminal (step S101), the call control server 2 determines whether the destination is a contractor of the nuisance call countermeasure system 1 (step S102). In the case of Yes (the destination is the contractor terminal 103), the process proceeds to step S103. In the case of No, the process proceeds to step S104.

In step S103, the call control server 2 determines whether or not the calling number is in the whitelist calling number of the contractor information # 1 (FIG. 4A). If Yes (the calling number is within the past n months) If the call history is No), the process proceeds to step S104.
In step S104, the call control server 2 performs a normal call connection and ends the process.

In step S <b> 105, the call control server 2 issues a password request instruction to the prior guidance device 3.
In response to this, the prior guidance device 3 sends a secret word request guidance (FIG. 5E) to the caller terminal 102 (step S106).

When the secret word is transmitted from the caller terminal 102 (step S107), the preliminary guidance device 3 transfers the secret word to the call control server 2 (step S108).
In response to this, the call control server 2 refers to the contractor information # 4 (FIG. 5 (c)) to determine whether or not the secret word is matched (step S109). Proceeding to step S111, in the case of No, the connection request is disconnected (step S110), and the process is terminated.

In step S <b> 111, the call control server 2 issues a recording notice instruction to the prior guidance device 3.
In response to this, the advance guidance device 3 sends a recording advance notice (“preliminary guidance” in the advance guidance file DB 31 in FIG. 5E) to the caller terminal 102 (step S112).

  Subsequently, in step S113, the call control server 2 refers to the contractor information # 2 (FIG. 5A), and if “(1) three-party call with relative” is set, the call control server 2 proceeds to step S114. Proceed (the process in FIG. 8A), and if “(2) watch call after normal call” is set, the process proceeds to step S118 (the process in FIG. 8B).

  If “(1) Three-party call with relative” is set, in step S114, the call control server 2 determines whether there is a third party capable of calling, and if Yes, the process proceeds to step S116. If no, the process proceeds to step S115. Specifically, in step S114, for example, referring to the contractor information # 3 (FIG. 5B), an inquiry call is made as to whether or not a three-party call is possible to the relative registered in the connection destination number. To do.

  In step S115, the call control server 2 disconnects the connection request and ends the process. As a result, it is possible to avoid a situation in which a call between the caller terminal 102 and the contractor terminal 103 is established in a situation where there is no third party, and the contractor of the contractor terminal 103 is damaged by the nuisance call. .

  In step S116, the call control server 2 instructs the mail server 5 to send the URL of the access call content storage DB 71 of the Web server 7 to a third party participating in the three-party call.

  Next, the call control server 2 establishes the three-party call connection (step S117). Then, the caller, the contractor, and the third party make a three-party call, the three-party call is recorded, and the call content is stored in the call content storage DB 221 and the access call content storage DB 71.

  Further, after step S116, the mail server 5 sends the URL of the access call content storage DB 71 to the third party by mail. Thereby, after the three-party call, the third party can access the call content storage DB 71 for access of the Web server 7 using the URL and confirm the call content. Therefore, it is possible to reduce the possibility that the contractor of the contractor terminal 103 is damaged by the nuisance call.

  If “(2) watch call after normal call” is set in step S113, the call control server 2 establishes a two-party call connection between the caller and the contractor (step S118). Then, the caller and the contractor make a two-party call, the two-party call is recorded, and the call content is stored in the call content storage DB 221 and the access call content storage DB 71.

  Thereafter, the call control server 2 determines whether or not the two-party call has ended (step S119 in FIG. 9). If Yes, the process proceeds to step S120, and if No, the process returns to step S119.

In step S <b> 120, the call control server 2 issues a voice voice analysis analysis instruction from the caller terminal 102 to the voice print analysis server 4.
In response to this, the voiceprint analysis server 4 refers to the voiceprint DB 41 (FIG. 5D), analyzes the voiceprint of the voice from the caller terminal 102 (step S121), and sends the voiceprint analysis result to the call control server 2. Send.

  In step S123, when the voiceprint match rate is 80% (predetermined threshold) or more (80 to 100%), the call control server 2 has received the voice from the caller terminal 102 from a bona fide caller. If the voiceprint match rate is less than 80% (0 to 79%), the process proceeds to step S124 because the voice from the caller terminal 102 cannot be determined to be from a bona fide caller.

In step S124, the call control server 2 instructs the watch call server 6 to send watch guidance.
In response to this, the watch call server 6 sends watch guidance to the contractor terminal 103.

  The content of the watch guidance is, for example, as shown in the watch guidance file DB 61 of FIG. 6A, if the voiceprint match rate is less than 50% (0 to 49%) "Do you want to contact the police?", And if the voiceprint match rate is 50% or more and less than 80% (50-79%), it is different from the usual voice of Mr. XX (voiceprint analysis subject) "Would you like to confirm with the person?"

  In response to this, there is a response from the contractor terminal 103 (step S126), and the call control server 2 performs countermeasures according to the countermeasure list 224 (FIG. 6B) as necessary (step S127).

  Specifically, for example, as shown in the handling list 224 (FIG. 6B), if the keyword “contact son / daughter / grandchild / husband / wife” is included in the response from the contractor terminal 103. , Prompt the contractor to connect to the relative terminal 104.

  If the keyword “nuisance call” is included in the response from the contractor terminal 103, the contractor is urged to connect to the consultation center terminal 105 that provides the unwanted call rejection service.

  If the keyword “call police” is included in the response from the contractor terminal 103, the contractor is prompted to connect to the police terminal 106.

When the contractor prompted to connect agrees (call connection request), the call control server 2 connects the contractor terminal 103 and the call connection destination.
By doing so, the contractor can consult with the counterparts of the relative terminal 104, the consultation center terminal 105, and the police terminal 106.

  Thus, according to the nuisance call countermeasure system 1 of the present embodiment, when a call connection request is made from the caller terminal 102 to another telephone terminal, the caller is added to the white list (contractor information # 1). If there is no telephone number of the terminal 102, first, determination using a secret word is performed, and if the secret word does not match, the connection request is discarded. If the secret word matches, if the three-party call is selected from the three-party call and the watch call, if there is no third party capable of the three-party call, the connection request is discarded. If there is a third party that can make a three-party call, establish a three-party call including the third party. That is, the contractor can make a three-party call including a trusted third party registered in advance.

  Also, if the secret word is matched, if the watch call is selected from the three-way call and the watch call, the call is established and the call is recorded. Is matched with one of the voiceprints in the voiceprint DB 41 at a match rate equal to or higher than a predetermined threshold, and if not matched, watch guidance is transmitted to the contractor terminal 103. That is, the contractor can detect the possibility that the telephone call was a nuisance call by listening to the watching guidance.

  In addition, after transmitting the watching guidance to the contractor terminal 103, the call connection to the call connection destination (the relative terminal 104, the consultation center terminal 105, the police terminal 106) corresponding to the keyword that matches the word received from the contractor terminal 103. Is transmitted to the contractor terminal 103, and if there is a call connection request from the contractor terminal 103, a call between the contractor terminal 103 and the call connection destination is established. Therefore, the contractor can consult with the call connection destination.

  In other words, in both cases of three-party calls and watch-to-call, it is possible to specify whether the caller is a malicious caller or a bona fide caller with a higher accuracy than before without placing a heavy burden on the subscriber. Even if it cannot be exhausted, the possibility of the recipient being damaged can be reduced.

Although description of this embodiment is finished above, the aspect of the present invention is not limited to these.
For example, the hardware of the devices 2 to 7 in the nuisance call countermeasure system 1 may be integrated and separated, or the functions and retained data may be replaced. Specifically, for example, the voiceprint match rate determination (step S123 in FIG. 9) may be performed by the voiceprint analysis server 4 or the watch call server 6 instead of the call control server 2.
In addition, about a concrete structure, it can change suitably in the range which does not deviate from the main point of this invention.

DESCRIPTION OF SYMBOLS 1 Nuisance call countermeasure system 2 Call control server (White list determination means, secret word determination means, third party determination means, three-party call establishment means, call establishment means, countermeasure means, processing means)
3 Advance guidance device (password request means, processing means)
4 Voiceprint analysis server 5 Mail server 6 Watch call server 6 (guidance transmission means, processing means)
7 Web server 21 Control unit 22 Storage unit (storage unit)
31 Advance guidance file DB
41 Voiceprint DB
51 Web server URL
61 Watch guidance file DB
71 Call content storage DB for access
101 Network 102 Caller Terminal 103 Contractor Terminal 104 Relative Terminal 105 Consultation Center Terminal 106 Police Terminal 221 Call Content Storage DB
222 Contractor information 223 Call history DB
224 Action List

Claims (6)

A nuisance call countermeasure system used for a call from a caller terminal to a receiver terminal,
For each recipient terminal, a white list that is a list of good faith caller phone numbers, secret words, and a third party phone number list that is a list of third party candidate phone numbers participating in a three-way call are stored. Storage means
Whether or not the telephone number of the caller terminal is on the whitelist of the callee terminal stored in the storage means when a call connection request is made from the caller terminal to the callee terminal White list determination means for determining
When the determination result using the white list is NO, a secret word requesting unit that requests a secret word for the caller terminal;
Determining whether the word received from the caller terminal matches the password stored in the storage means, and if not, the password determination means for discarding the connection request;
Third party determination means for determining whether there is a third party capable of three-way calling using the third party telephone number list of the recipient terminal stored in the storage means when the secret word is matched When,
If there is no third party capable of three-way calling, discard the connection request,
If there is a third party capable of three-way calling, three-way call establishment means for establishing a three-way call including the third party,
A nuisance call countermeasure system characterized by comprising: A nuisance call countermeasure system used for a call from a caller terminal to a receiver terminal,
Storage means for storing a white list that is a list of phone numbers of bona fide callers, secret words, watch guidance that is a warning message about nuisance calls, and a voice print DB of bona fide callers for each recipient terminal;
Whether or not the telephone number of the caller terminal is on the whitelist of the callee terminal stored in the storage means when a call connection request is made from the caller terminal to the callee terminal White list determination means for determining
When the determination result using the white list is NO, a secret word requesting unit that requests a secret word for the caller terminal;
Determining whether the word received from the caller terminal matches the password stored in the storage means, and if not, the password determination means for discarding the connection request;
A call establishment means for establishing a call and recording the call when the secret word matches;
After the call is over, it is determined whether the voice print of the recorded voice matches any voice print in the voice print DB stored in the storage means with a match rate equal to or higher than a predetermined threshold, and the predetermined voice print A watch guidance transmission means for sending the watch guidance stored in the storage means to the receiver terminal when the match does not match at a match rate equal to or greater than the threshold value;
A nuisance call countermeasure system characterized by comprising: The storage means further stores a handling list having a plurality of combinations of keywords and call connection destinations,
After the watching guidance transmitting means transmits the watching guidance to the recipient terminal, the call connection destination corresponding to the keyword that matches the word received from the recipient terminal with reference to the handling list stored in the storage means A message that prompts a call connection to the recipient terminal, and if there is a call connection request from the recipient terminal, further includes a coping means for establishing a call between the recipient terminal and the call destination. The nuisance call countermeasure system according to claim 2. An annoying call countermeasure method by an annoying call countermeasure system used for a call from a caller terminal to a receiver terminal,
The nuisance call countermeasure system is
For each recipient terminal, a white list that is a list of good faith caller phone numbers, secret words, and a third party phone number list that is a list of third party candidate phone numbers participating in a three-way call are stored. Storage means and processing means,
The processing means includes
Whether or not the telephone number of the caller terminal is on the whitelist of the callee terminal stored in the storage means when a call connection request is made from the caller terminal to the callee terminal Determine
If the determination result using the white list is NO, request a secret word from the caller terminal,
Determine whether the word received from the caller terminal matches the secret word stored in the storage means, if not, discard the connection request,
If the secret word matches, using the third party telephone number list of the recipient terminal stored in the storage means, determine whether there is a third party capable of three-way calling,
If there is no third party capable of three-way calling, discard the connection request,
If there is a third party capable of three-way calling, establish a three-way call including the third party.
An annoying call countermeasure method characterized by that. An annoying call countermeasure method by an annoying call countermeasure system used for a call from a caller terminal to a receiver terminal,
The nuisance call countermeasure system is
Storage means for storing a white list that is a list of phone numbers of bona fide callers, secret words, watch guidance that is a warning message about nuisance calls, and a voice print DB of bona fide callers for each recipient terminal; Processing means, and
The processing means includes
Whether or not the telephone number of the caller terminal is on the whitelist of the callee terminal stored in the storage means when a call connection request is made from the caller terminal to the callee terminal Determine
If the determination result using the white list is NO, request a secret word from the caller terminal,
Determine whether the word received from the caller terminal matches the secret word stored in the storage means, if not, discard the connection request,
If the secret matches, establish a call and record the call,
After the call is over, it is determined whether the voice print of the recorded voice matches any voice print in the voice print DB stored in the storage means with a match rate equal to or higher than a predetermined threshold, and the predetermined voice print If the match rate is equal to or greater than the threshold value, the watch guidance stored in the storage means is transmitted to the recipient terminal.
An annoying call countermeasure method characterized by that. The storage means further stores a handling list having a plurality of combinations of keywords and call connection destinations,
The processing means includes
After the watch guidance is transmitted to the recipient terminal, a call connection to a call destination corresponding to a keyword that matches the word received from the recipient terminal is urged with reference to a handling list stored in the storage means The nuisance call according to claim 5, wherein a message is transmitted to the recipient terminal, and if there is a call connection request from the recipient terminal, a call between the recipient terminal and the call destination is established. Countermeasure.

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