JP5632407B2 - Number conversion call processing apparatus and number conversion method - Google Patents

Description

  The present invention relates to a number conversion call processing device and a number conversion method for converting a telephone number designated as a destination from a calling terminal.

  In the incoming billing service (for example, Free Dial (registered trademark)) starting from “0120”, “0800”, etc., the destination terminal is distributed to each outgoing area. For example, the number conversion device arranged on the network converts the telephone number for the incoming billing service starting from “0120”, “0800”, etc. into the physical number (“ Phone number in the format of “0AB ~ J”).

  Cited Document 1 describes that a dial number is changed according to conditions such as a region and time in an intelligent network in which a computer is connected to an exchange and advanced data processing is left to the computer for cooperation.

Japanese Patent Laid-Open No. 10-70611

  In general, a service contractor (service provider) such as an incoming billing service provides a similar service in a plurality of destination areas. However, if the destination exchange is damaged or congested due to a disaster in a given destination area, communication to the destination will be an error, and the user will not receive service. Missed the incoming call from.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to enable an alternative connection to a terminal in another incoming area where communication is possible when a communication error occurs in a certain destination area. It is an object of the present invention to provide a number conversion call processing device and a number conversion method.

  In order to achieve the above object, the present invention provides a number conversion call processing apparatus, which stores a logical number, a calling party charge area of a calling terminal, and a physical number of a called terminal in association with each other. A table and a number conversion means for converting a logical number designated as a destination from the calling terminal into a first physical number based on the logical number and the calling charge area with reference to the logical number conversion table; Discriminating means for discriminating whether or not the number of error responses transmitted from the receiving side fee zone exchange of the first physical number converted by the number converting means exceeds a predetermined threshold, the number converting means Is different from the caller toll zone with the same logical number as the logical number with reference to the logical number conversion table when the number of error responses in the callee toll zone of the first physical number exceeds the threshold Fee When the number of error responses in the destination fee area of the converted second physical number does not exceed a predetermined threshold, the receiving side terminal and the calling side of the second physical number are converted to the second physical number of the area Connect the terminal.

  The present invention is a number conversion call processing device, comprising: a logical number conversion table that stores a logical number, a calling side fee area of a calling terminal, and a physical number of a called terminal in association with each other; The number conversion means for converting the logical number designated as the destination to the first physical number based on the logical number and the calling side fee area with reference to the logical number conversion table, and the number conversion means Discriminating means for discriminating whether or not the number of error responses transmitted from the exchange in the receiving side toll zone of the first physical number exceeds a predetermined threshold, wherein the number converting means has the first physical number When the number of error responses in the receiving-side toll zone exceeds the threshold, the logical number conversion table is referred to convert the second physical number to a logical number different from the logical number, and the converted second physical number Called party If the number of error responses gold zone does not exceed the predetermined threshold value, it connects the calling terminal and the called terminal of the second physical number.

  The present invention relates to a number conversion method performed by a number conversion call processing device, wherein the number conversion call processing device corresponds to a logical number, a calling party charge area of a calling terminal, and a physical number of a receiving terminal. A logical number conversion table that is stored in addition to the logical number designated as an incoming call destination from the calling side terminal with reference to the logical number conversion table and based on the logical number and the calling side fee area A number conversion step for converting to a number, a determination step for determining whether or not the number of error responses transmitted from the exchange in the terminating toll zone of the first physical number exceeds a predetermined threshold, and the first physical number When the number of error responses in the receiving toll zone exceeds the threshold, the second physical of the toll zone that is different from the originating toll zone with the same logical number as the logical number with reference to the logical number conversion table Number A connection step of connecting the incoming terminal of the second physical number and the outgoing terminal when the number of error responses in the incoming fee area of the converted second physical number does not exceed a predetermined threshold And do.

  According to the present invention, it is possible to provide a number conversion call processing device and a number conversion method that enable an alternative connection to a terminal in another incoming area where communication is possible when a communication error occurs in a certain destination area. it can.

It is a schematic diagram explaining the outline | summary of the number conversion call processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure of a number conversion call processing apparatus. It is a schematic diagram which shows the operation | movement outline | summary of a number conversion call processing apparatus. It is a flowchart which shows operation | movement of a number conversion call processing apparatus. It is a schematic diagram which shows the operation example of a number conversion call processing apparatus. It is a figure which shows an example of a permission / denial table. It is a figure which shows an example of an error response counter table.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic diagram for explaining the outline of the number conversion call processing device of the present embodiment. The user on the transmission side (calling user) transmits the incoming call telephone number starting from the incoming call charging service number such as “0120”, “0800” or the like as the called party number from the calling side terminal 2. The incoming billing telephone number is a telephone number composed of an incoming billing service number and a logical number for which the callee bears all call charges (incoming call billing), and is called, for example, free dial (registered trademark), free access, etc. Is.

  When the originating side exchange 3 detects a call in which the incoming billing telephone number is designated as the destination, it transfers the call to the number conversion call processing device 1.

  When receiving the transferred call, the number conversion call processing device 1 converts the logical number of the incoming billing telephone number into a physical number (telephone number in the format of “0AB to J”), and transmits the originating side exchange 3 and the terminating side exchange 4. The call sent from the caller terminal 2 is connected to the callee terminal 5 having the converted physical number. As a result, communication / call is possible between the caller terminal 2 and the callee terminal 5. The destination user of the receiving terminal 5 is a service contractor for the incoming billing service.

  In addition, the number conversion call processing device 1 of the present embodiment not only converts the logical number of the incoming billing telephone number into a physical number but also an exchange (Charge Area: CA) exchange (incoming side exchange) of the converted physical number. When the number of error responses from) exceeds a threshold, conversion to a physical number of another charge area of the same service contractor is performed.

  Thus, for example, even if the receiving side exchange in a certain charge area is affected or congested due to a disaster or the like, and many error responses occur and cannot be connected to the calling terminal 2, in this embodiment, another charge area ( When the same incoming billing service is provided at the receiving terminal for (region), it is possible to provide the service at the receiving terminal in the other toll areas, so that missed incoming opportunities from the calling user are reduced. . In addition, the calling user can enjoy the same service at the receiving terminal in the other charge area. In the case of billing on the receiving side, it is the service contractor (service provider) that changes the payment amount due to the different charge area, and there is no disadvantage for the calling user. Furthermore, it is possible to select an alternative connection destination without giving further load to the congested called party exchange, and the own apparatus does not need processing capacity to communicate with the congested called party exchange.

  FIG. 2 is a configuration diagram showing the configuration of the number conversion call processing device 1 of the present embodiment.

  The number conversion call processing device 1 shown in the figure includes a number conversion unit 11, a threshold value determination unit 12, an error response reception unit 13, a permission / rejection table management unit 14, a guidance transmission unit 15, a logical number conversion table 16, and a CA. A number-number band table 17, an error response counter table 18, and a permission / refusal table 19 are provided.

  The number conversion unit 11 refers to the logical number conversion table 16 and converts the logical number designated as the destination from the calling terminal into a physical number based on the logical number and the calling charge area. The threshold value determination unit 12 determines whether or not the number of error responses transmitted from the receiving side fee zone exchange of the physical number converted by the number conversion unit 11 exceeds a predetermined threshold value.

  When the error response receiving unit 13 receives an error response from the receiving side exchange when connecting the call from the calling side terminal to the receiving side terminal, the error response receiving unit 13 adds “1” to the number of error responses in the error response counter table 18. The permission / rejection table management unit 14 manages the permission / rejection table 19 and accepts an input instruction from each service contractor, and sets and changes each item of the permission / rejection table.

  The guidance sending unit 15 converts to a physical number of another charge zone, and sends a guidance indicating that the connection is an alternative connection to the caller terminal and the callee terminal before making a substitute connection to the callee terminal of the physical number. . The guidance sending unit 15 may be a guidance server different from the number conversion call processing device 1.

  The logical number conversion table 16 is a table for converting a logical number to be dialed after the incoming billing service number into a physical number (“0AB to J”), and is created in advance for each service contractor. . For example, as shown in FIG. 3, the logical number conversion table 16 stores a logical number, a calling CA number indicating a charge area of the calling terminal (calling exchange), and a physical number of the called terminal in association with each other. Has been. As for the calling CA number, each exchange holds the CA number of the toll zone to which it belongs, but when transmitting a call request from the calling terminal to the number conversion call processing device 1, its own CA number (Calling CA number) is not transmitted. The number conversion unit 11 searches the CA number-number band table 17 using the transmission source physical number (“0AB to J”) of the transmission side terminal included in the call request as a key, and the calling CA corresponding to the transmission source physical number. Get the number.

  In general, the logical number conversion table 16 sets the physical number so that the calling terminal and the receiving terminal are in the same or close charge area in order to reduce the call charge.

  The CA number-number band table 17 is a table for acquiring a called CA number indicating a toll zone of the receiving terminal (receiving switch) of the physical number converted by the logical number conversion table 16. In the CA number-number band table 17, for example, as shown in FIG. 3, the called CA number and the number band of the physical number are stored in association with each other.

  The error response counter table 18 is a table that counts error responses from the receiving side exchange for each charge area (CA number). For example, as shown in FIG. 3, the error response counter table 18 stores a CA number and the number of error responses in association with each other. When receiving an error response from each terminating exchange when connecting a call, the error response receiving unit 13 increments the number of error responses of the corresponding CA number in the error response counter table 18 by “1”. Note that the number of error responses (counter) is cleared to “0” after a predetermined time has elapsed. It may be forcibly cleared using a command.

  The permission / refusal table 19 is a table in which, for each service contractor, conversion into a physical number of another charge zone is performed and whether or not an alternative connection to the receiving terminal of the physical number is permitted is set. The permission / refusal table 19 will be described later.

  The number conversion call processing device 1 described above can use, for example, a general-purpose computer system including a CPU, a memory, an external storage device such as an HDD, an input device, and an output device. In this computer system, each function of the number conversion call processing device 1 is realized by the CPU executing a program for the number conversion call processing device 1 loaded on the memory. The program for the number conversion call processing device 1 can be stored in a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, a DVD-ROM, or can be distributed via a network. .

  Next, the operation of the number conversion call processing device 1 of the present embodiment will be described.

  FIG. 3 is a diagram showing an outline of the operation of the number conversion call processing device 1. The outline of the operation shown in the figure shows an example of conversion into a physical number of another fee area of the same contractor.

  A call request with a logical number # 1000 is transmitted to the number conversion call processing device 1 from the originating side exchange whose CA area is CA number # 2 (S11). The number conversion unit 11 of the number conversion call processing device 1 refers to the logical number conversion table 16 and converts it into a physical number 0422561111 corresponding to the logical number # 1000 and the calling CA number # 2 (S12).

  Then, the threshold determination unit 12 refers to the CA number-number band table 17 to acquire the CA number # 2 corresponding to the converted number band of the physical number, and the error response number “120” corresponding to the CA number # 2 is acquired. Is obtained from the error response counter table 18 (S13). Then, the threshold determination unit 12 determines whether or not the number of error responses “120” exceeds a predetermined threshold (for example, “100”).

  Since the threshold value is exceeded, the number conversion unit 11 refers to the logical number conversion table 16 and selects the physical number 0422551111 having the same logical number and the CA number # 3 closest to the originating CA number # 2 (S14). Then, the threshold determination unit 12 refers to the CA number-number band table 16 to obtain the CA number # 3 corresponding to the number band of the selected physical number, and the error response number “6” corresponding to the CA number # 3. Is obtained from the error response counter table 18 (S16). Then, the threshold determination unit 12 determines whether or not the error response number “6” of the CA number # 3 exceeds the threshold.

  Since the threshold value is not exceeded, the number conversion unit 11 determines the receiving side terminal of the call request received in S11 as the physical number 0422551111 whose toll zone is CA number # 3. Then, before connecting the calling terminal and the receiving terminal, the guidance sending unit 15 sends the guidance indicating that it is an alternative connection to the receiving terminal in another charge zone to the calling terminal and the receiving terminal, respectively. (S17, S18). After sending the guidance, the number conversion unit 11 connects the calling terminal and the receiving terminal (S19).

  Prior to the call request in S11, a call request with logical number # 1000 is transmitted from the originating exchange with CA number # 2 to the number conversion call processing device 1 (S20), which is the same as S11 to S13 described above. Processing is performed, and the number of error responses is acquired from the error response counter table 18. If the error response of CA number # 2 does not exceed the threshold when this number of error responses is acquired, connection is made to the receiving terminal of physical number 0422561111 of CA number # 2 (S21). At this time, when the error response receiving unit 13 receives an error response from the terminating exchange having the CA number # 2 (S22), the error response number of the CA number # 2 in the error response counter table 18 is incremented by “1”. FIG. 3 shows an example of an error response for one time from S20 to S22, but the number of error responses (not shown) set to the number of error responses in the error response counter table 18 has occurred.

  FIG. 4 is a flowchart showing the operation of the number conversion call processing device 1 described in FIG.

  The number conversion unit 11 of the number conversion call processing device 1 receives the call request including the logical number transmitted by the transmission side terminal from the transmission side exchange, and converts the logical number into a physical number (S31). Specifically, the number conversion unit 11 refers to each logical number conversion table 16 for each service contractor and determines the logical number specified in the call request and the calling CA number acquired from the CA number-number band table 17. The set logical number conversion table 16 is specified, and the corresponding physical number is acquired. If none of the logical number conversion tables 16 has a record of the logical number specified in the call request and the acquired caller CA number, an error response is transmitted to the originating exchange (S37).

  Then, the threshold determination unit 12 refers to the CA number-number band table 17, acquires the CA number of the number band of the physical number converted in S31, and calculates the number of error responses of the acquired CA number from the error response counter table 18. get. Then, the threshold determination unit 12 determines whether or not the acquired number of error responses exceeds a predetermined threshold (S32).

  When the threshold value is not exceeded (S32: NO), the number conversion unit 11 connects the call transmitted by the caller terminal to the callee terminal of the physical number converted in S31 (S36).

  If the threshold value is exceeded (S32: YES), the number conversion unit 11 refers to the logical number conversion table 16 of the service contractor specified in S31, and uses the same logical number as the logical number of the call request received in S31. Then, a physical number of another CA number different from the calling CA number of the call request is selected. At this time, the number conversion unit 11 sequentially selects the physical numbers of the neighboring CA numbers closest to the calling CA number of the call request. When there are a plurality of neighboring CA numbers closest to the originating CA number, the physical number of the younger CA number with a smaller number is selected. The threshold determination unit 12 acquires the CA number corresponding to the number band of the physical number selected by the number conversion unit 11 from the CA number-number band table 17 and acquires the number of error responses of the CA number from the error response counter table 18. Then, it is determined whether or not the threshold value is exceeded (S33).

  When a CA number whose error response number does not exceed the threshold is detected (S33: NO), the guidance sending unit 15 sets the calling side before connecting the calling side terminal and the called side terminal of the converted physical number. Guidance indicating alternative connection is sent to the terminal and the receiving terminal (S35). For example, a message such as “The area you are calling for is currently difficult to connect. I will connect to an alternative area” is sent to the calling terminal, and “ Sends out a guidance such as "Customers transferred from a difficult area." In the guidance sent to the receiving terminal, a specific area name corresponding to the calling CA number may be set as an area that is currently difficult to connect.

  After sending the guidance, the number conversion unit 11 connects the call originated by the caller terminal to the callee terminal of the physical number converted in S33 (the physical number of the CA number whose error response number does not exceed the threshold) ( S36).

  The process of S33 is repeatedly performed for the physical numbers of all other CA numbers of the same logical number until the CA number of the error response number not exceeding the threshold is detected. Further, the physical numbers of other CA numbers are selected in order from the physical number of the CA number close to the calling CA number in order to suppress an increase in call charges.

  If there is no physical number with the same logical number as the call request received in S31 and a different CA number from the calling CA number (S33: no CA), the process proceeds to S43.

  When the number of error responses of CA numbers corresponding to all physical numbers of the same logical number exceeds the threshold (S33: YES), the number conversion unit 11 refers to the logical number conversion table 16 of the service contractor specified in S31, A physical number having a logical number different from the logical number of the call request received in S31 is selected. At this time, the number conversion unit 11 selects the physical numbers of the same CA number as the originating CA number and the physical numbers of the neighboring CA numbers closest to the originating CA number in order from different logical numbers. When there are a plurality of neighboring CA numbers closest to the originating CA number, the physical number of the younger CA number with a smaller number is selected. The threshold determination unit 12 acquires the CA number corresponding to the number band of the physical number selected by the number conversion unit 11 from the CA number-number band table 17 and acquires the number of error responses of the CA number from the error response counter table 18. Then, it is determined whether or not the threshold value is exceeded (S34).

  When the CA number whose error response number does not exceed the threshold is detected (S34: NO), the guidance sending unit 15 sets the calling side before connecting the calling side terminal and the called side terminal of the converted physical number. Guidance indicating alternative connection is sent to the terminal and the receiving terminal (S35). Then, the number conversion unit 11 connects the call originated by the caller terminal to the callee terminal of the physical number converted in S34 (the physical number of the CA number whose error response number does not exceed the threshold) (S36).

  The process of S34 is repeated for all physical numbers of different logical numbers until the CA number of the error response number not exceeding the threshold is detected. Further, in order to suppress an increase in call charges, the physical number of the same CA number as the originating CA number and the physical numbers of other CA numbers close to the originating CA number are selected in order.

  When the number of error responses of CA numbers corresponding to all physical numbers of different logical numbers exceeds the threshold (S34: YES), the number conversion unit 11 transmits an error response to the originating side exchange (S37). If a different logical number does not exist in the logical number conversion table 16 of the service contractor specified in S31 (S34: No different logical number), an error response is transmitted to the originating exchange (S37).

  FIG. 5 is a specific example for specifically explaining the flowchart of FIG. In the example shown in the figure, a physical number associated with a different logical number of the same service contractor is converted.

  Here, a call request with a logical number # 1000 is transmitted to the number conversion call processing device 1 from the originating exchange whose CA is # 3 (S51). The number conversion unit 11 of the number conversion call processing device 1 refers to each logical number conversion table 16 for each service contractor, and the calling CA acquired from the logical number and CA number-number band table 17 specified in the call request. The logical number conversion table 16 in which the number is set is specified and converted into the corresponding physical number 0422551111 (S52).

  Then, the threshold determination unit 12 refers to the CA number-number band table 17 to obtain the CA number # 3 corresponding to the converted number band of the physical number, and the error response number “130” corresponding to the CA number # 3. Is obtained from the error response counter table 18, and it is determined that the number of error responses “130” exceeds a predetermined threshold (eg, “100”) (S53).

  Since the threshold value is exceeded, the number conversion unit 11 refers to the logical number conversion table 16 and selects the physical number 0422561111 of the young CA number # 2 closest to the originating CA number # 3 with the same logical number (S54). ). Then, the threshold determination unit 12 refers to the CA number-number band table 16 and acquires the CA number # 2 corresponding to the number band of the selected physical number (S55), and the error response corresponding to the CA number # 2 The number “120” is acquired from the error response counter table 18, and it is determined that the error response number “120” exceeds the threshold (S56).

  Since the threshold value is exceeded, the number conversion unit 11 refers to the logical number conversion table 16 and selects the physical number 0422541111 having the same logical number and the CA number # 4 that is next closest to the originating CA number # 3 (S57). Then, the threshold determination unit 12 refers to the CA number-number band table 16 and acquires the CA number # 4 corresponding to the number band of the selected physical number (S58), and an error response corresponding to the CA number # 4. The number “120” is acquired from the error response counter table 18, and it is determined that the error response number “120” exceeds the threshold (S59).

  Since the number of error responses of the CA numbers of all physical numbers corresponding to the same logical number exceeds the threshold value, the number conversion unit 11 refers to the logical number conversion table 16 and uses the different CA numbers # 2000 and the originating CA number #. The physical number 0422551111 having the same CA number # 3 as 3 is selected (S60). Then, the threshold determination unit 12 refers to the CA number-number band table 16 and acquires the CA number # 3 corresponding to the number band of the selected physical number (S61), and an error response corresponding to the CA number # 3. The number “130” is acquired from the error response counter table 18, and it is determined that the error response number “130” exceeds the threshold (S62).

  Since the threshold value is exceeded, the number conversion unit 11 refers to the logical number conversion table 16 and selects the physical number 0422591111 of the CA number # 1 closest to the originating CA number # 3 with a different logical number (S63). Then, the threshold determination unit 12 refers to the CA number-number band table 16 to obtain the CA number # 1 corresponding to the number band of the selected physical number (S64), and the error response corresponding to the CA number # 1 The number “5” is acquired from the error response counter table 18, and it is determined that the error response number “5” does not exceed the threshold (S65).

  The number conversion unit 11 determines the receiving side terminal of the call request received in S51 as the physical number 0422591111 of the CA number # 1 whose error response number does not exceed the threshold (S66). Then, the number conversion unit 11 sends guidance indicating that the connection is an alternative connection to the calling side terminal and the called side terminal, and then connects the calling side terminal and the called side terminal.

  In the present embodiment, each service contractor can select whether or not to convert to a physical number of another charge area and to permit an alternative connection to the receiving terminal of the converted physical number. To.

  FIG. 6 is a diagram illustrating an example of the permission / refusal table 19. The permission / refusal table 19 shown in the figure includes a contractor number, a logical number, an alternative connection permission / rejection to another charge area (CA number), an alternative connection permission / rejection at the same logical number, and an alternative connection permission / rejection at a different logical number. This table has the following items.

  In the alternative connection permission / refusal to other charge areas, whether or not to permit conversion to a physical number other than the physical number corresponding to the logical number and calling CA number specified in the call request is set. When “reject” is set in the alternative connection permission / rejection to another charge zone, the alternative connection permission / rejection with the same logical number and the alternative connection permission / rejection with different logical numbers are automatically “rejected”. In addition, regarding a call request to a service contractor in which “reject” is set in the alternative connection permission / denial to other charge areas, in the flowchart shown in FIG. 4, in the case of S32: YES, the processing after S33 is performed. In step S37, an error response is transmitted to the caller terminal, and the process is terminated.

  For alternative connection permission / rejection with the same logical number, the same logical number specified in the call request within the same contractor is converted into a physical number corresponding to a CA number other than the calling CA number and connected. Set whether or not to allow it. In the alternative connection permission / denial with different logical number, whether or not to permit conversion and connection to a physical number having a logical number different from the logical number specified in the call request within the same contractor is set.

  When the alternative connection permission / rejection with the same logical number is “permitted” and the alternative connection permission / rejection with a different logical number is also “permitted” (in the case of contractor number # 1 in FIG. 6), all the processes in the flowchart shown in FIG. I do.

  When the alternative connection permission / rejection with the same logical number is “permitted” and the alternative connection permission / rejection with a different logical number is “reject” (in the case of the contractor number # 2 in FIG. 6), in the flowchart shown in FIG. If YES, the process proceeds to S37 without performing the processes after S34, and an error response is transmitted to the caller terminal, and the process is terminated.

  When the alternative connection permission / rejection with the same logical number is “reject” and the alternative connection permission / rejection with a different logical number is “permitted” (in the case of the contractor number # 3 in FIG. 6), in the flowchart shown in FIG. If YES, the process proceeds to S34 without performing the process of S33.

  It is assumed that the service contractor can set each item of the permission / rejection table 19 at the time of service contract and can change each item of the permission / rejection table 19 at an arbitrary timing after the service contract. The service contractor sets and changes each item in the permission / refusal table 19 using a user interface provided by the permission / refusal table management unit 14 of the number conversion call processing device 1. The user interface provided by the permission / rejection table management unit 14 may be, for example, a permission / rejection table setting Web page, an automatic voice response (Interactive Voice Response) input by a PB signal, or the like.

  As described above, the service contractor is provided with the permission / denial table 19 that can be set / changed, so that the service contractor can flexibly and others in consideration of the call charge for each charge area, the service / business content for each logical number, etc. It is possible to set whether to permit or reject the connection to the receiving terminal in the charge area (CA number) in the vicinity.

  The number conversion call processing device 1 of the present embodiment described above has the same service contract when the number of error responses in the charge area (CA number) of the physical number converted using the logical number conversion table 16 exceeds the threshold. Conversion to the physical number of the other toll zone. As a result, in this embodiment, even if the terminating exchange in a certain fee area is damaged or congested due to a disaster or the like and cannot be connected to the terminating terminal in the relevant fee area, When a similar service is provided, the same service can be provided by connecting to the receiving terminal in the other charge area. Therefore, the service contractor is less likely to miss an incoming call from the calling user. In addition, the calling user can enjoy the same service at the receiving terminal in another charge area.

  Further, in the present embodiment, when connecting to a receiving side terminal in another charge zone, guidance indicating that the connection is an alternative connection is sent to both the transmitting side terminal and the receiving side terminal. Thus, the calling user and the called user can enjoy the service and provide the service after recognizing that the connection is an alternative connection.

  In addition, this invention is not limited to the said embodiment, Many deformation | transformation are possible within the range of the summary. For example, although the error response counter table 18 of the above embodiment has been described with one type of error response, a plurality of types of error responses may be counted.

  FIG. 7 is an example of an error response counter table that counts a plurality of types of error responses. In the example shown in the figure, two types of error responses, that is, a non-response and a busy response are counted. The error response receiver 13 counts up the error response counter table in accordance with the type of error response received from the terminating exchange. In this case, the first threshold value for impossible response and the second threshold value for busy response are set (stored) in advance, and the first threshold value for impossible response is the second threshold value for busy response. Set to a smaller value. By making the first threshold value for the unacceptable response smaller than the second threshold value for the busy response, it is possible to perform alternative connection at an early timing and increase the opportunities for connection of the originating terminal.

  Also, the error response counter table shown in the figure includes a column for setting the availability status, and the availability status is based on the count number of the unacceptable response, the count number of the busy response, and the first and second thresholds. It is determined and set. For example, when both the count number of the unacceptable response and the count number of the busy response do not exceed the first and second thresholds, “OK” is set in the available state. Further, when both the count number of the unacceptable response and the count number of the busy response exceed the first and second thresholds, “NG1” is set in the available state. When only the busy response count exceeds the second threshold, “NG2” is set in the available state. Thus, by providing a plurality of types of NG, it is possible to add a reason for an error when an error response is finally obtained.

  In the above embodiment, the number conversion in the incoming billing service has been described as an example. However, the number conversion of the present invention is not limited to the incoming billing service.

1: Number conversion call processing device 11: Number conversion unit 12: Threshold determination unit 13: Error response reception unit 14: Acceptance / rejection table management unit 15: Guidance transmission unit 16: Logical number conversion table 17: CA number-number band table 18: Error response counter table 19: Permission table

Claims (7)

A number conversion call processing device comprising:
A logical number conversion table for storing a logical number, a calling-side charge zone of the calling-side terminal, and a physical number of the called-side terminal in association with each other;
A number conversion means for converting a logical number designated as a destination from the calling side terminal into a first physical number based on the logical number and the calling side charge area with reference to the logical number conversion table;
Discriminating means for discriminating whether or not the number of error responses transmitted from the exchange in the incoming toll zone of the first physical number converted by the number converting means exceeds a predetermined threshold;
The number conversion means refers to the logical number conversion table when the number of error responses in the receiving side fee area of the first physical number exceeds the threshold value, and the calling side fee with the same logical number as the logical number When the number of error responses in the destination toll zone of the converted second physical number does not exceed a predetermined threshold, the second physical number is received. A number conversion call processing device characterized in that a terminal on a side and a terminal on a transmission side are connected. The number conversion call processing device according to claim 1,
And further comprising guidance sending means for sending a guidance indicating that the connection is an alternative connection to the calling terminal and the called terminal before connecting the called terminal having the second physical number and the calling terminal. Number conversion call processing device. The number conversion call processing device according to claim 1 or 2,
The number conversion means refers to the logical number conversion table when the number of error responses in the receiving side toll zone of the first physical number exceeds the threshold, and is the same logical number as the logical number, The number conversion call processing device, which performs conversion in order from the second physical number of the toll zone closest to the calling side toll zone. The number conversion call processing device according to any one of claims 1 to 3,
The number conversion means refers to the logical number conversion table and refers to the third logical number different from the logical number when the number of error responses in the destination toll zone of the second physical number exceeds a predetermined threshold. When converted to a physical number and the number of error responses in the incoming toll zone of the converted third physical number does not exceed the threshold, the incoming terminal and the outgoing terminal of the converted third physical number are connected A number conversion call processing device characterized by: The number conversion call processing device according to any one of claims 1 to 4,
The number of error responses includes the number of impossible responses and the number of busy responses, and the predetermined threshold includes a first threshold for impossible responses and a second threshold for busy responses. A number conversion call processing device. A number conversion call processing device comprising:
A logical number conversion table for storing a logical number, a calling-side charge zone of the calling-side terminal, and a physical number of the called-side terminal in association with each other;
A number conversion means for converting a logical number designated as a destination from the calling side terminal into a first physical number based on the logical number and the calling side charge area with reference to the logical number conversion table;
Discriminating means for discriminating whether or not the number of error responses transmitted from the exchange in the incoming toll zone of the first physical number converted by the number converting means exceeds a predetermined threshold;
The number conversion means refers to the logical number conversion table and refers to the logical number conversion table when the number of error responses in the receiving side fee zone of the first physical number exceeds the threshold, and the second physical number having a logical number different from the logical number And when the number of error responses in the incoming toll area of the converted second physical number does not exceed a predetermined threshold, the incoming terminal and the outgoing terminal of the second physical number are connected. A number conversion call processor characterized by the above. A number conversion method performed by a number conversion call processing device,
The number conversion call processing device includes:
A logical number conversion table that stores a logical number, a calling-side charge zone of the calling-side terminal, and a physical number of the called-side terminal in association with each other;
A number conversion step of converting a logical number designated as a destination from the calling side terminal into a first physical number based on the logical number and the calling side charge area with reference to the logical number conversion table;
A discriminating step for discriminating whether or not the number of error responses transmitted from the exchange in the receiving fee area of the first physical number exceeds a predetermined threshold;
When the number of error responses in the receiving side toll zone of the first physical number exceeds the threshold, the toll zone that is different from the originating toll zone with the same logical number as the logical number with reference to the logical number conversion table When the number of error responses in the incoming toll area of the converted second physical number does not exceed a predetermined threshold, the receiving terminal and the calling terminal of the second physical number And a connecting step for connecting the number and the number conversion method.

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