JP4857007B2 - Switching system and switching method - Google Patents

Description

  The present invention relates to a switching system and a switching method for switching destinations of telephone numbers.

In recent years, IP telephones have been introduced, but IP telephones cannot be used during power outages. For this reason, a technique for transferring a telephone number assigned to an IP telephone in a normal state to an analog telephone in the event of a power failure is disclosed (for example, see Patent Document 1).
JP 2005-5807 A

  However, in the prior art, the destination telephone number must be manually input, and the destination is not automatically switched according to traffic (communication amount).

  The present invention has been made in view of such a situation. The necessity of switching is determined according to traffic, and the switching destination is determined according to traffic or the like.

  A first feature of the present invention is a switching system for switching destinations, wherein a threshold of traffic and a set of switching destination telephone numbers that can be a switching destination are set in advance for a set of switching source telephone numbers that are switching sources. Storage means for associating and storing, traffic monitoring means for monitoring traffic of the set of switching source telephone numbers, and incoming calls for telephone numbers included in the set of switching source telephone numbers when the traffic exceeds the threshold When it is determined that the switching of the destination is necessary and there are two or more sets of the switching destination telephone numbers stored in the storage means, the traffic of each switching destination telephone number is collected, Switching necessity / switching destination judging means for setting a telephone number included in a set of a small number of switching destination telephone numbers as a switching destination telephone number; Upon receiving a switching source number, a switching destination number, and a switching instruction from the switching necessity / switching destination determining means, a call means for transmitting a tone signal corresponding to the number and the instruction to a switching center outside the switching system is provided. There is.

  “A set of switching source telephone numbers” refers to a plurality of telephone numbers (for example, 03-tttt-ttt1, 03-tttt-ttt2, 03-tttt-ttt3) held by the Tokyo branch when the switching source is the Tokyo branch. This means that a set of switching destination telephone numbers means, for example, when the switching destination is the Osaka branch, a plurality of telephone numbers of the Osaka branch (for example, 06-kkkk-kkk1, 06-kkkk-kkk2, 06-kkkk- kkk3). And, “when there are two or more sets of switching destination telephone numbers” means, for example, that the set of switching destination telephone numbers is not only a plurality of telephone numbers that the Osaka branch has, but also a plurality of telephone numbers that the Osaka branch has and the Sapporo branch Means the case of a plurality of telephone numbers. The tone signal includes DTMF (Dial Tone Multi Frequency). The “switching center” is an existing technology that can change the correspondence between a telephone number and a telephone line when receiving a switching source telephone number, a switching destination telephone number, and a switching instruction. For example, when the first telephone number is assigned to the first telephone line and the second telephone number is assigned to the second telephone line, the switching center sets “switching source: first telephone number, After receiving the switching instruction “switching destination: second telephone number” and executing the switching, a call made with the first telephone number as the destination is received by the terminal connected to the second telephone line. . Further, “collect traffic” means receiving traffic conditions from software or hardware that monitors traffic. For example, if the Tokyo branch has 50 lines and 40 lines are in use, a report “80% busy” is received as the traffic status.

  A second feature of the present invention is a switching system for switching destinations, and for a set of switching source telephone numbers that are switching sources, a traffic threshold, a set of switching destination telephone numbers that can be a switching destination, and each Storage means for pre-associating and storing the priority of the set, traffic monitoring means for monitoring traffic of the set of switching source telephone numbers, and when the traffic exceeds the threshold, the set of switching source telephone numbers When it is determined that it is necessary to switch destinations for the included telephone numbers, and there are two or more sets of the switching destination telephone numbers stored in the storage means, the switching destination telephone number having a high priority. Switching necessity / switching destination judging means for setting a telephone number included in the set as a switching destination telephone number, and switching from the switching necessity / switching destination judging means. For example the original number, upon receiving the switching destination number and switching instruction is to provided a call-unit for transmitting to the switching center of the outside of the system switches the tone signals corresponding to these numbers and instructions, a.

  According to a third feature of the present invention, the switching system further includes a voice recognition unit, and the switching necessity / switching destination determining unit sends the switching instruction to the switching source telephone number after a predetermined time has elapsed. When the call instruction is received, the call means sends a call to the switching source telephone number, and forwards the response voice from the destination to the voice recognition means. Then, the voice recognition means converts the response voice into text, compares the converted response voice with the response voice text stored at normal switching stored in advance, and the similarity between the two texts is equal to or greater than a threshold value. In other words, it is determined that the switching has been performed normally, and if the similarity between the two texts is less than the threshold, it is determined that the switching has not been performed normally.

  According to the first feature of the present invention, when the traffic on the destination telephone line exceeds the threshold, a line with less traffic among the two or more destination telephone lines associated with the destination telephone line is set as the destination. Is set. For example, when the traffic on the line of the Tokyo branch exceeds the threshold value, the line of the branch with less traffic in the Osaka branch and the Sapporo branch is set as the destination.

  According to the second feature of the present invention, when the traffic on the destination telephone line exceeds a threshold value, a high-priority line among two or more destination telephone lines associated with the destination telephone line is called the destination. Set as For example, when the traffic on the line of the Tokyo branch exceeds the threshold, the line of the branch having the higher priority of the Osaka branch and the Sapporo branch is set as the destination.

  According to the third feature of the present invention, it is possible to confirm whether or not the switching has been performed normally.

  The best mode for carrying out the present invention will be described below with reference to the drawings. The following description is merely an example, and the technical scope of the present invention is not limited by the following description.

  In FIG. 5, the conceptual diagram of embodiment of this invention is shown. In the embodiment of the present invention, as shown in FIG. 5, it is assumed that a predetermined number of telephone numbers are assigned to the branches of Sapporo, Tokyo, Osaka and Naha. If the line used by the Tokyo branch exceeds the threshold, the telephone of the Sapporo branch, the Osaka branch or the Naha branch is called even if the telephone number of the Tokyo branch is dialed.

  FIG. 1 is a diagram showing an overall configuration of a switching system according to an embodiment of the present invention. FIG. 2 shows an example of the stored contents of a database (DB) constituting the switching system of FIG.

  As shown in FIG. 1, the switching system 10 includes a voice recognition device 12, a call receiving device 13, a Web server 14, a DB 15, a traffic monitoring device 17, and a switching necessity / switching destination determining device 18. The voice recognition device 12, the call device 13, the Web server 14, the traffic monitoring device 17, and the switching necessity / switching destination determination device 18 are connected via a LAN 16. A VoIPGW (Voice over Internet Protocol Gateway) 11 is also connected to the LAN 16.

  As shown in FIG. 2, the DB 15 stores the branch number, branch name, threshold value, weight priority, switching source telephone number, priority, and switching destination telephone number.

  The traffic monitoring device 17 monitors the number of incoming calls to the telephone number stored as the switching source in the DB 15 and periodically reports the monitoring result to the switching necessity / switching destination determining device 18. When the number of incoming calls exceeds the threshold, the switching necessity / switching destination determination device 18 determines that switching is necessary.

  The Web server 14 receives a switching instruction, a switching source telephone number, and a switching destination telephone number from the switching necessity / switching destination determination device 18. Further, the Web server 14 can cause the caller 13 to send a switching command, a switching source telephone number, and a switching destination telephone number to the switching center 22, and can cause the calling unit 13 to call the switching source telephone number. . Furthermore, the Web server 14 can receive from the voice recognition device 12 whether or not switching has been normally performed (switching result).

  The voice recognition device 12 receives the response voice received by the caller device 13 from the destination telephone (the switching destination telephone when the switching is performed normally. The switching source telephone when the switching is not performed normally). Can be converted into a text file and compared with a text file registered in advance. Then, the contents of the response voice converted into a text file are compared with the contents of the text file registered in advance, and if the similarity between the contents of both files is equal to or greater than the threshold, it is determined that the switching has been performed normally. If the similarity of the file contents is less than the threshold, it is determined that the switching has been performed normally. Then, the determination result (comparison result) is returned to the Web server 14.

  In response to the switching source telephone number, switching destination telephone number and switching instruction received from the switching necessity / switching destination judging device 18, the calling device 13 passes through the VoIPGW 11 and the public network 21 to the telephone line switching center 22 to DTMF (Dial Tone). Call Multi Frequency). In addition, an automatic voice response (IVR) returned from the call destination or an operator's voice is passed to the voice recognition device 12. Further, in order to confirm that the line has been switched, a call is made to the switching source telephone number after the line switching instruction.

  FIG. 3 is a flowchart showing a flow of processing in which the switching system according to the embodiment of the present invention determines whether switching is necessary and the switching destination. As shown in FIG. 3, in step S103, the switching necessity / switching destination judging device 18 compares the number of system incoming calls with a threshold value.

  If the number of incoming calls does not exceed the threshold, the process returns to the loop start end. If the number of incoming calls exceeds the threshold, the process proceeds to step S105. Proceeding to step S105 means that switching is determined to be necessary. In step S105, it is checked whether or not a set of a plurality of switching destination telephone numbers is stored in the DB 15. If a set of a plurality of switching destination telephone numbers is not stored, the process proceeds to step S107. In step S107, the incoming call setting is changed to the first destination in the set of registered switching destination telephone numbers.

  In the example of FIG. 2, the threshold value of the Sapporo branch is 80%. Therefore, if the number of incoming calls to the Sapporo branch exceeds 80% of the telephone line of the Sapporo branch, it is determined that switching is necessary. For the Sapporo branch, only a set of telephone numbers with the area code “03” is stored as a set of switching destination telephone numbers. That is, “a plurality of sets” of switching destination telephone numbers is not stored. Therefore, if it is determined that switching is necessary for the Sapporo branch, the first telephone number “03-tttt-ttt1” in the registered set of switching destination telephone numbers becomes the switching destination.

  In the example of FIG. 2, the switching destination telephone numbers are grouped according to the area code. However, this is only an example, and it may be divided into two or more groups within the same area code.

  If a set of a plurality of switching destination telephone numbers is stored in the DB 15, the process proceeds to step S109 in FIG. In step S109, it is checked whether the line weight is prioritized. If the weight is not prioritized, the process proceeds to step S119. In step S119, the current traffic of the registered switching destination is collected. In step S121, traffic is calculated and listed in order of increasing traffic. Furthermore, in step S123, one of the switching destination candidates with less traffic is set as the switching destination.

  In the example of FIG. 2, for Tokyo (switching source), the weight priority is “NO”, that is, the line weight is not prioritized. Therefore, the process proceeds to step S119. The current traffic is collected for the Sapporo line with the area code “011” and the Osaka line with the area code “06” registered as candidates for the switching destination. And if you calculate the traffic of Sapporo and the traffic of Osaka and there is less traffic in Sapporo, the phone number of Sapporo “011-sss-sss1” “011-sss-sss2” “011-sss-sss3” -Set either of them as the switching destination. If there is less traffic in Osaka, the telephone number of “06-kkkk-kkk1,” “06-kkkk-kkk2,” “06-kkkk-kkk3,” etc. is set as the switching destination.

  If priority is given to the weight of the line, the process proceeds to step S113 in FIG. In step S113, it is checked whether a priority is set. If the priority is set, the process proceeds to step S115. In step S115, a switching destination candidate with a high priority is set as a switching destination.

  In the example of FIG. 2, for Osaka (switching source), the weight priority is “YES”, that is, the line weight is prioritized. For this reason, it progresses to step S113. Then, it is checked whether the priority is set for the Tokyo line with the area code “03” and the Naha line with the area code “098” registered as candidates for switching. And since the priority “High” is set for the line in Tokyo, the phone number “03-tttt-ttt1”, “03-tttt-ttt2”, “03-tttt-ttt3” ... Set as the switching destination.

  When the priority is not set, the process proceeds to step S117 in FIG. In step S117, the registered switching destination candidate is set as a switching destination in round robin.

  In the example of FIG. 2, for Naha (switching source), the weight priority is “YES”, that is, the line weight is prioritized. For this reason, it progresses to step S113. Then, it is checked whether the priority is set for the Tokyo line with the area code “03” and the Osaka line with the area code “06” registered as candidates for the switching destination. However, since priority is not set for either the Tokyo or Osaka line, once "03-tttt-ttt1" is set as the switching destination, next, "06-kkkk-kkk1" is set as the switching destination, Next, set “03-tttt-ttt2” as the switching destination, then set “06-kkkk-kkk2” as the switching destination, and so on. -tttt-ttt2 "," 03-tttt-ttt3 "... and Osaka phone numbers" 06-kkkk-kkk1, "" 06-kkkk-kkk2, "" 06-kkkk-kkk3 "... Set as.

  In step S125, the loop is repeated again at a preset time interval. As described above, in the present embodiment, the traffic monitoring device 17 monitors traffic, and when the traffic exceeds a threshold, the switching necessity / switching destination determining device 18 determines that switching is necessary. Then, the switching destination is determined (determined) based on whether there are a plurality of sets of switching destination telephone numbers, priority is given to the line weight, or priority is set.

  FIG. 4 shows the flow of processing after the switching destination is determined in the embodiment of the present invention. In step S203 of FIG. 4, the switching necessity / switching destination determination device 18 transmits a command for switching the line, the switching source telephone number, and the switching destination telephone number to the caller 13.

  In step S205, the calling device 13 calls the telephone line switching center 22 and instructs switching from the switching source telephone number to the switching destination telephone number. Upon receiving the switching instruction, the telephone line switching center 22 changes the destination of the switching source telephone number to the switching destination telephone number.

  As a result, when a call is made to the telephone number of the switching source, the telephone line switching center 22 issues a call with the switching destination telephone set as the receiving destination, and therefore receives the incoming call to the switching destination telephone set.

  In step S207, in order to confirm that the switching is successful, the switching necessity / switching destination determination device 18 instructs the calling device 13 to call the telephone number of the switching source. In step S209, the calling device 13 places a call to the switching source telephone number. In step S211, the calling device 13 receives a response from the destination telephone. In step S <b> 213, the calling device 13 passes the response voice received from the destination telephone to the voice recognition device 12.

  In step S215, the speech recognition device 12 converts the response speech received from the call device 13 into a text file and compares it with a text file stored in advance in storage means (not shown). It is determined whether or not this is the case. If the similarity between the two texts is equal to or greater than the threshold, it is determined that the switching has been performed normally. If the similarity between the two texts is less than the threshold, it is determined that the switching has not been performed normally. Then, the determination result (check result) is sent to the Web server 14.

  For example, (1) a first telephone number is assigned to a first telephone line, a second telephone number is assigned to a second telephone line, and (2) is connected to the first telephone line. The frequency waveform (first waveform) of the response voice when it arrives at the terminal and the frequency waveform (second waveform) of the response voice when it arrives at the terminal connected to the second telephone line are stored in advance. (3) It is assumed that a process of switching the destination of the first telephone number to a terminal connected to the second telephone line is instructed. Then, after switching is instructed, a call is generated with the first telephone number as the destination, and the frequency waveform of the response voice returned from the destination is the same as or similar to the first waveform Determines that the call has arrived at the terminal connected to the first telephone line, that is, switching has failed. On the other hand, when the frequency waveform of the response voice returned from the destination is the same as or similar to the second waveform, the incoming call arrives at the terminal connected to the second telephone line, that is, the switching has succeeded. Judge.

  Further, instead of making a determination based on the similarity of frequency waveforms, (1) response speech is converted into text data using an existing speech recognition engine, and (2) text is a vector (sentence vector) in a multidimensional space. To obtain the similarity and distance between sentences (text data obtained from response speech and text data stored in advance) based on the sentence vector, and (3) whether switching has been performed normally You may judge.

  In step S217, the Web server 14 writes the check result received from the speech recognition apparatus 12 in the database 15, and generates check result display screen configuration information described in HTML (HyperText Markup Language) or the like.

  The user can view the generated check result display screen using a Web browser. By browsing, it is possible to confirm which branch telephone number has been switched to which branch.

  As described above, according to the embodiment of the present invention, when traffic exceeds a threshold value, it is determined that switching is necessary, and based on preset conditions and real-time traffic, switching destination candidates are selected from the switching destination candidates. A telephone number is selected. Then, by converting the selected telephone number and switching instruction into a tone signal such as DTMF by the caller means, it is possible to automatically instruct the telephone line switching center where to switch incoming calls. Furthermore, it is possible to compare the response voice from the destination and the pre-registered text and confirm whether or not the switching has been normally performed based on the similarity.

It is a figure showing the whole switching system composition concerning an embodiment of the invention. An example of stored contents of a database (DB) constituting the switching system of FIG. 1 is shown. It is a flowchart which shows the flow of a process in which the switching system which concerns on embodiment of this invention judges the necessity of switching and a switching destination. It is a flowchart which shows the flow of a process after the switching destination is determined in embodiment of this invention. It is a conceptual diagram of embodiment of this invention.

Explanation of symbols

10 ... Switching system 11 ... VoIPGW
12 ... Voice recognition device 13 ... Calling device 14 ... Web server 15 ... DB
16 ... LAN
17 ... Traffic monitoring device 18 ... Switching necessity / switching destination judging device 21 ... Public network 22 ... Telephone line switching center

Claims (4)

A switching system for switching destinations,
Storage means for pre-associating and storing a traffic threshold and a set of switching destination telephone numbers that can be a switching destination for a set of switching source telephone numbers that are a switching source;
Traffic monitoring means for monitoring traffic of the set of switching source telephone numbers;
When the traffic exceeds the threshold value, it is determined that it is necessary to switch the destination of the telephone numbers included in the set of switching source telephone numbers, and the switching destination telephone stored in the storage means When there are two or more sets of numbers, the traffic of each set of switching destination telephone numbers is collected, and switching necessity / switching is performed by setting the telephone number included in the switching destination telephone number set with low traffic as the switching destination telephone number. A pre-determination means,
Upon receiving the switching source number, switching destination number and switching instruction from the switching necessity / switching destination judging means, the call means for transmitting the tone signal corresponding to the number and instruction to the switching center outside the switching system;
Voice recognition means,
The switching necessity / switching destination judging means transmits a call instruction to the switching source telephone number to the call means after a predetermined time has elapsed since sending the switch instruction,
When the call means receives a call instruction to the switching source telephone number, the call means makes a call to the switching source telephone number, receives a response voice from the destination of the call, and forwards it to the voice recognition means And
The speech recognition means converts the response speech into text, compares the response speech that has been converted into text, and the response speech text of the switching destination telephone number stored in advance, and if the similarity between the two texts is equal to or greater than a threshold value. A switching system that determines that switching has been performed normally, and determines that switching has not been performed normally if the similarity between the two texts is less than a threshold . A switching system for switching destinations,
Storage means for pre-associating and storing a traffic threshold, a set of switching destination telephone numbers that can be a switching destination, and a priority of each set for the set of switching source telephone numbers that are the switching source
Traffic monitoring means for monitoring traffic of the set of switching source telephone numbers;
When the traffic exceeds the threshold value, it is determined that it is necessary to switch the destination of the telephone numbers included in the set of switching source telephone numbers, and the switching destination telephone stored in the storage means Switching necessity / switching destination judging means for setting a telephone number included in the set of switching destination telephone numbers having a high priority as a switching destination telephone number when there are two or more sets of numbers;
Upon receiving the switching source number, switching destination number and switching instruction from the switching necessity / switching destination judging means, the call means for transmitting the tone signal corresponding to the number and instruction to the switching center outside the switching system;
Voice recognition means,
The switching necessity / switching destination judging means transmits a call instruction to the switching source telephone number to the call means after a predetermined time has elapsed since sending the switch instruction,
When the call means receives a call instruction to the switching source telephone number, the call means makes a call to the switching source telephone number, receives a response voice from the destination of the call, and forwards it to the voice recognition means And
The speech recognition means converts the response speech into text, compares the response speech that has been converted into text, and the response speech text of the switching destination telephone number stored in advance, and if the similarity between the two texts is equal to or greater than a threshold value. A switching system that determines that switching has been performed normally, and determines that switching has not been performed normally if the similarity between the two texts is less than a threshold . A switching method for switching destinations using a switching system comprising storage means, traffic monitoring means , switching necessity / switching destination determination means , caller means , and voice recognition means ,
The storage means stores a threshold of traffic and a set of switching destination telephone numbers that can be a switching destination in association with a set of switching source telephone numbers that are a switching source,
The traffic monitoring means monitors traffic of the set of switching source telephone numbers;
The switching necessity / switching destination judging means judges that switching of the destination is necessary for the telephone numbers included in the set of switching source telephone numbers when the traffic exceeds the threshold, and When there are two or more sets of switching destination telephone numbers stored in the storage means, the traffic of each switching destination telephone number is collected, and the telephone numbers included in the switching destination telephone number set with less traffic are switched. Set as the destination phone number,
When the call means receives the switching source number, the switching destination number and the switching instruction from the switching necessity / switching destination judging means, the tone signal corresponding to the number and the instruction is transmitted to the switching center outside the switching system ,
The switching necessity / switching destination judging means transmits a call instruction to the switching source telephone number to the call means after a predetermined time has elapsed since sending the switch instruction,
When the call means receives a call instruction to the switching source telephone number, the call means makes a call to the switching source telephone number, receives a response voice from the destination of the call, and forwards it to the voice recognition means And
The speech recognition means converts the response speech into text, compares the response speech that has been converted into text, and the response speech text of the switching destination telephone number stored in advance, and if the similarity between the two texts is equal to or greater than a threshold value. A switching method characterized in that it is determined that switching has been performed normally, and if the similarity between both texts is less than a threshold, it is determined that switching has not been performed normally . A switching method for switching destinations using a switching system comprising storage means, traffic monitoring means , switching necessity / switching destination determination means , caller means , and voice recognition means ,
The storage means stores in advance a threshold of traffic and a set of switching destination telephone numbers that can be a switching destination and a priority of each set for a set of switching source telephone numbers that are a switching source,
The traffic monitoring means monitors traffic of the set of switching source telephone numbers;
The switching necessity / switching destination judging means judges that switching of the destination is necessary for the telephone numbers included in the set of switching source telephone numbers when the traffic exceeds the threshold, and When there are two or more sets of switching destination telephone numbers stored in the storage means, a telephone number included in the switching destination telephone number set having a high priority of each switching destination telephone number set is used as the switching destination telephone number. Set,
When the call means receives the switching source number, the switching destination number and the switching instruction from the switching necessity / switching destination judging means, the tone signal corresponding to the number and the instruction is transmitted to the switching center outside the switching system ,
The switching necessity / switching destination judging means transmits a call instruction to the switching source telephone number to the call means after a predetermined time has elapsed since sending the switch instruction,
When the call means receives a call instruction to the switching source telephone number, the call means makes a call to the switching source telephone number, receives a response voice from the destination of the call, and forwards it to the voice recognition means And
The speech recognition means converts the response speech into text, compares the response speech that has been converted into text, and the response speech text of the switching destination telephone number stored in advance, and if the similarity between the two texts is equal to or greater than a threshold value. A switching method characterized in that it is determined that switching has been performed normally, and if the similarity between both texts is less than a threshold, it is determined that switching has not been performed normally .

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