JP3828531B2 - COMMUNICATION METHOD, COMMUNICATION SYSTEM, RADIO BASE STATION, COMMUNICATION CONTROL DEVICE, AND TERMINAL DEVICE - Google Patents

Description

  The present invention relates to a communication method, a communication system, a radio base station, a communication control device, and a terminal device that perform communication via a communication network connected via a subscriber module of an ISDN network.

  2. Description of the Related Art Conventionally, an ISDN network that provides service areas throughout the country, and another communication network, for example, a communication network operated by a communication carrier that is different from a communication carrier that operates the ISDN network (hereinafter referred to as an ISDN network communication carrier). One method of connecting to the network (hereinafter referred to as an ISDN network-dependent communication network) is to use a subscriber module of the ISDN network.

  In general, a subscriber module is used to connect a terminal device or the like of a subscriber who subscribes to the ISDN network. A telephone number is assigned to each subscriber module, and a call from the terminal device is controlled. In addition, a call setting message (for example, Non-Patent Document 1) in which a telephone number of a destination is stored is used.

  When a subscriber module is used for connection between the ISDN network and the ISDN network-dependent communication network, a terminal device connected to the ISDN network-dependent communication network from a terminal device connected to the ISDN network, etc. The call setup message transmitted to the ISDN network is not routed toward the ISDN network, but is connected to the subscriber module connected to the terminal device and the like located in the same station and the ISDN network dependent communication network. Routed to and from the subscriber module (hereinafter referred to as subscriber module loopback function).

By using the subscriber module loopback function, it is possible to prevent a call setup message from the terminal device or the like from being routed to the ISDN network. Therefore, a telecommunications carrier operating an ISDN network-dependent communication network (hereinafter referred to as an ISDN network). The dependent communication carrier) can reduce the connection fee (access charge) paid to the ISDN network communication carrier.
ITU-T Recommendation Q.931 (I.451), “ISDN user-network interface layer 3 specification for basic call control”, ITU-T, May 1998

  By the way, among ISDN network dependent communication operators, a wireless base station is connected to the above-mentioned ISDN network, a subscriber module connected to the wireless base station, and a subscriber module connected to the ISDN network dependent communication network. The ISDN network-dependent communication carrier (for example, PHS (Personal Handyphone System) that provides mobile communication service to a mobile terminal that performs wireless communication with the wireless base station by using the subscriber module loopback function described above. Business).

  In such a mobile terminal, when a call is made to a destination terminal device connected to the ISDN network-dependent communication network, not a telephone number (destination number) assigned to the destination terminal device or the like, The telephone number (specific number) assigned to the subscriber module connected to the ISDN network-dependent communication network must be specified.

  As a result, the ISDN network-dependent communication network cannot obtain a call setting message in which the destination number assigned to the destination terminal device is stored, and directly receives a call from the mobile terminal. There was a problem that it was not possible to make a call to the terminal device.

  Furthermore, when the wireless base stations as described above are arranged in every region of the country, the specific number assigned to the subscriber module is the region where the wireless base station is located (for example, the area code number part or the like). ) Depends on.

  Therefore, the user of the mobile communication service according to such a form has to change the number to be input as appropriate according to the region where the user exists, and there is a problem that the destination number input by the user cannot be unified. .

  Therefore, the present invention has been made in view of the above points, and when performing communication via a communication network connected to an ISDN network via a subscriber module, based on a unified destination number, It is an object of the present invention to provide a communication method, a communication system, a radio base station, a communication control device, and a terminal device that can receive a call to the destination.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is constituted by a radio base station connected to an ISDN network and a communication control device arranged on a communication network connected via a subscriber module of the ISDN network. A communication method used in a communication system, wherein, in the radio base station, a destination number assigned to a destination connected via the communication network, a specific number assigned to the subscriber module, And the wireless base station receives a call setup message in which the destination number is stored in the first area from the terminal device, and the wireless base station A station stores the destination number stored in the first area of the call setup message in the second area of the call setup message based on the conversion number data. And the step of converting the specific number associated with the destination number into a replacement call setting message stored in the first area, and the communication control device acquires the information obtained via the ISDN network And a step of transmitting the call setting message to the destination based on the destination number stored in the second area of the replacement call setting message.

  According to such a feature, the called party number stored in the first area (for example, the called number area) of the call setup message (SETUP message) received from the terminal device (for example, the mobile terminal) is added to the ISDN network. In the case where it is associated with the specific number assigned to the subscriber module, the destination number is stored in the second area (for example, the called subaddress area) of the call setup message.

  Further, the communication control device arranged on the ISDN network-dependent communication network, that is, the communication control device arranged on the ISDN network-dependent communication network, calls based on the destination number stored in the second area. Send a setup message to the destination.

  That is, according to such a feature, when communication is performed via a communication network connected to an ISDN network via a subscriber module, a call to the destination is terminated based on a unified destination number. be able to.

  In addition, according to such a feature, the user does not need to appropriately change the destination number to be input according to the area where the user exists, and can specify the destination by a unified destination number. it can.

  Furthermore, according to this feature, an ISDN network-dependent communication carrier can install a radio base station and a communication control device, so that it is not necessary to change the functions of the existing ISDN network at all.

  According to a second aspect of the present invention, there is provided a communication system including a radio base station connected to an ISDN network and a communication control device arranged on a communication network connected via a subscriber module of the ISDN network. A conversion in which the wireless base station associates a destination number assigned to a destination connected via the communication network with a specific number assigned to the subscriber module. Based on the conversion number data, the conversion number data storage unit for storing the number data, the reception unit for receiving the call setting message in which the destination number is stored in the first area, and the conversion number data, The destination number stored in the first area of the call setup message is stored in the second area of the call setup message and is associated with the destination number A message conversion unit that converts a constant number into a replacement call setting message stored in the first area, and the communication control device acquires the second area of the replacement call setting message acquired via the ISDN network. And a message distribution unit that transmits a call setting message to the destination based on the destination number stored in the destination.

  According to a third feature of the present invention, in the second feature of the present invention, the communication system further includes a database device that manages the conversion number data, and the database device is configured to provide the radio base station for each of the radio base stations. A conversion number data generation unit for each radio base station that generates conversion number data for each radio base station, which is conversion number data; and a distribution unit that distributes the number data for each radio base station to the radio base station. Is the gist.

  According to this feature, since the conversion number data is distributed to each radio base station, the radio base station performs conversion according to a change in the configuration of the ISDN network-dependent communication network (for example, addition of a destination). Number data can be updated quickly.

  A fourth feature of the present invention is a radio base station in which a communication network and an ISDN network are connected via a subscriber module of the ISDN network, and the communication network is connected to the ISDN network. A conversion number data storage unit for storing conversion number data in which a destination number assigned to a destination connected via a specific number assigned to the subscriber module is associated; Based on the conversion number data, the receiving unit that receives the call setting message in which the destination number is stored in the first area, and the call setting message is stored in the first area of the call setting message. A replacement call setting message storing the destination number in the second area of the call setting message and storing the specific number associated with the destination number in the first area And summarized in that and a message conversion unit for converting the.

  According to a fifth feature of the present invention, in the fourth feature of the present invention, a conversion number data receiving unit for receiving conversion number data for each radio base station, which is the conversion number data for each radio base station, is further provided. The number data storage unit for conversion stores the received number data for conversion by radio base station.

  According to such a feature, each radio base station can receive the conversion number data from the outside. Therefore, according to a change in the configuration of the ISDN network-dependent communication network (for example, addition of an incoming destination), etc. Number data can be updated quickly.

  According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, when the message conversion unit does not associate the destination number with the specific number, the received call setting message The gist is that the call setting message received from the terminal device by the receiving unit without being converted is transmitted to the ISDN network.

  According to such a feature, since the SETUP message to be transmitted to the ISDN network is transmitted to the ISDN network without being converted in the wireless base station, the terminal device connects the wireless base station and the ISDN network. Communication can be performed.

  According to a seventh aspect of the present invention, there is provided a communication control device disposed on a communication network connected via a subscriber module of an ISDN network, wherein a second call setup message acquired via the ISDN network A destination number assigned to the destination, stored in the area, is stored in a first area of the call setup message, and a call setup message in which the destination number is stored in the first area is stored in the first area. The gist of the present invention is to provide a message distribution unit that transmits to a destination.

  An eighth feature of the present invention is a terminal device in which a communication network and an ISDN network are connected via a subscriber module of the ISDN network, and is connected to the ISDN network, A conversion number data storage unit for storing conversion number data in which a destination number assigned to a destination to be connected is associated with a specific number assigned to the subscriber module; Based on the conversion number data, a number acquisition unit that acquires a destination number, stores the specific number associated with the destination number in a first area, and sets the destination number to the call The gist of the present invention is to provide a message generation unit that generates a replacement call setting message stored in the second area of the setting message.

  According to such a feature, when the ISDN network-dependent communication provider provides a so-called fixed telephone service by wire instead of a mobile communication service, by using the terminal device instead of the radio base station, the above-described terminal device is used. The same effects as those of the communication system described above can be obtained.

  According to the present invention, when communication is performed via a communication network connected to an ISDN network via a subscriber module, a call to the destination can be terminated based on a unified destination number. A communication method, a communication system, a radio base station, a communication control device, and a terminal device can be provided.

(Network configuration including communication system)
Next, an embodiment of the present invention will be described. FIG. 1 shows a network configuration including a communication system according to the present embodiment.

  As shown in the figure, it is a communication network of an ISDN network 410 having a service provision area in the whole country and an ISDN network-dependent communication carrier (for example, a PHS carrier) that provides a mobile communication service via the ISDN network 410. The ISDN network-dependent communication network 510 is connected via the subscriber module 310 and the subscriber module 311 of the ISDN network 410. Specifically, the subscriber modules 310 and 311 are mounted on an exchange constituting the ISDN network 410 or the like.

  In this embodiment, a PRI (primary group) interface is used as the subscriber modules 310 and 311. “0111 111 111” is assigned as a specific number (hereinafter referred to as a specific PRI number) to the subscriber module 310, specifically, the point of interface (POI) 3101. Further, “0999 999 999” is assigned as a specific PRI number to the subscriber module 311, specifically, the POI 3111.

  The specific PRI number is specifically a telephone number (0A to J) consisting of a domestic prefix (0), an area / city code (5 digits), and a subscriber number (4 digits). ).

  The subscriber module 310 is connected to a radio base station 210 installed by an ISDN network-dependent communication operator that operates the ISDN network-dependent communication network 510. Further, a wireless base station 211 is similarly connected to the subscriber module 311.

  The radio base stations 210 and 211 can perform radio communication with the mobile terminals 110 to 140 and convert the contents of the call setup message (SETUP message) transmitted from the mobile terminals 110 to 140. For example, PHS terminals can be used as the mobile terminals 110 to 140.

  Further, an access point 810 and an access point 811 that communicate with the mobile terminal 110 to the mobile terminal 140 are connected to the ISDN network-dependent communication network 510. In this embodiment, “0570 800 111” is assigned to the access point 810, and “0570 800 999” is assigned to the access point 811 as the destination number. As the access points 810 and 811, for example, a general telephone terminal or an automatic voice response device (IVR) can be used.

  Further, the ISDN network-dependent communication network 510 includes a SETUP distribution device 710 that distributes the SETUP message to the access point 810 or the access point 811 based on the content of the SETUP message routed through the subscriber modules 310 and 311. It is connected. In the present embodiment, the SETUP distribution device 710 constitutes a communication control device.

Further, the ISDN network-dependent communication network 510 has a destination number (“0570 800 111”, “0570 800 999”) assigned to the access points 810 and 811 and a specific PRI number assigned to the POIs 3101 and 3111. A conversion number DB device 610 that generates conversion number data that associates (“0111 111 111”, “0999 999 999”) and distributes the conversion number data to the radio base stations 210 and 211 is connected. . In the present embodiment, the conversion number DB device 610 constitutes a database device.
(Logical block configuration of communication system)
Next, a logical block configuration of the communication system according to the present embodiment will be described with reference to FIG. As shown in the figure, the communication system according to the present embodiment includes radio base stations 210 and 211, a SETUP distribution device 710, and a conversion number DB device 610.

  The radio base stations 210 and 211 include a data reception unit 21, a data transmission unit 22, a SETUP control unit 23, a conversion number data storage unit 24, and a communication control unit 25.

  The conversion number DB device 610 includes a data distribution unit 61, a conversion number data management unit 62, and an operation unit 63.

The SETUP distribution device 710 includes a data reception unit 71, a data transmission unit 72, a SETUP distribution control unit 73, a distribution information management unit 74, and an operation unit 75.
(1) Configuration of Radio Base Stations 210 and 211 First, the function of each block of the radio base stations 210 and 211 will be described using the radio base station 210 as an example. The data receiving unit 21 receives data from the mobile terminals 110 to 140 and the subscriber module 310. The data includes data related to call control such as a SETUP message, data in which an audio signal is encoded, and the like.

  Further, in this embodiment, the data receiving unit 21 transmits a SETUP message in which the destination number (“0570 800 111” or “0570 800 999”) is stored in the incoming number area (first area) to the mobile terminal 110. Or a receiving unit to be acquired from the mobile terminal 140.

  Furthermore, the data receiving unit 21 converts conversion number data for each radio base station, that is, conversion number data for each radio base station, which is data in which a destination number and a specific PRI number are associated with each other. A conversion number data receiving unit that receives from 610 is configured.

  The data transmission unit 22 transmits data to the mobile terminals 110 to 140 and the subscriber module 310.

  The conversion number data storage unit 24 stores conversion number data in which a destination number and a specific PRI number assigned to the subscriber module 310 (POI 3101) are associated with each other. The conversion number data storage unit is configured. Also, the conversion number data storage unit 24 can store the radio base station conversion number data received from the conversion number DB device 610.

  Here, FIG. 3 shows an example of conversion number data for each radio base station generated in the conversion number DB apparatus 610. As shown in the figure, the conversion number data generated in the conversion number DB device 610 is generated for each radio base station, and the radio base station 210 receives “base” from the conversion number data shown in the figure. The conversion number data regarding the “station 210” is distributed from the conversion number DB device 610.

  The SETUP control unit 23 determines whether the destination number stored in the SETUP message is associated with the specific PRI number based on the conversion number data stored in the conversion number data storage unit 24. To do.

  If the SETUP control unit 23 determines that the destination number is associated with the specific PRI number, the SETUP control unit 23 stores the destination number area (first area) of the SETUP message received by the data reception unit 21. The destination number is stored in the destination subaddress area (second area) of the SETUP message, and the specific PRI number associated with the destination number is converted into a replacement call setting message stored in the destination number area And constitutes a message conversion unit.

  Specifically, the SETUP control unit 23 receives the incoming number of the SETUP message received from the mobile terminal 110 to the mobile terminal 140 by the data receiving unit 21 based on the conversion number data stored in the conversion number data storage unit 24. The called party number (“0570 800 111” or “0570 800 999”) stored in the area is associated with the specific PRI number (“0111 111 111”) assigned to the subscriber module 310 (POI 3101). It is determined whether or not.

  When the SETUP control unit 23 determines that the destination number is associated with the specific PRI number, the destination number stored in the incoming number area of the SETUP message (for example, “0570 800 111”) Is stored in the destination subaddress area of the SETUP message.

  Further, the SETUP control unit 23 sets up a SETUP message (replacement call setting message) in which the specific PRI number (“0111 111 111”) associated with the destination number (“0570 800 111”) is stored in the called number area. Convert to

  Here, FIG. 7 shows a configuration example of the SETUP message before conversion and a configuration example of the SETUP message after conversion by the SETUP control unit 23.

  FIG. 5A shows an example of the configuration of the SETUP message before conversion. As shown in FIG. 5A, the called party number “0570 800 111” is stored in the called number area of the common part S1 of the SETUP message. On the other hand, nothing is stored in the destination subaddress area of the individual unit S2, and it is empty.

  FIG. 2B shows an example of the configuration of the SETUP message after conversion by the SETUP control unit 23. As shown in FIG. 5B, the destination number “0570 800 111” is stored in the destination subaddress area of the individual unit S2. Also, a specific PRI number “0111 111 111” assigned to the subscriber module 310 (POI 3101) is stored in the incoming call number area of the common part S1.

  In the present embodiment, the destination number may be stored in another area of the SETUP message (for example, another area of the individual unit S2) instead of the destination subaddress area.

The communication control unit 25 performs control related to data transmission / reception with the mobile terminals 110 to 140 and the subscriber module 310.
(2) Configuration of SETUP Distribution Device 710 Next, the function of each block of the SETUP distribution device 710 will be described.

  The data receiving unit 71 receives the SETUP message transmitted from the radio base stations 210 and 211 via the subscriber modules 310 and 311. Further, the data transmission unit 72 transmits the SETUP message distributed by the SETUP distribution control unit 73 to the access point 810 or the access point 811.

  The SETUP distribution control unit 73 is a SUB message area (second area) of the SETUP message acquired via the ISDN network 410, specifically, the SETUP message (replacement call setting message) converted by the radio base station 211. The SETUP message is transmitted to the destination based on the destination number stored in the message, and this embodiment constitutes a message distribution unit.

  Specifically, the SETUP distribution control unit 73 stores the called party number stored in the called subaddress area of the SETUP message (replacement call setting message) acquired via the ISDN network 410 in the called number area of the SETUP message. Then, a SETUP message in which the destination number is stored in the destination number area is transmitted to the destination, that is, the access point 810 or the access point 811.

  More specifically, the SETUP distribution control unit 73 acquires the called party number (for example, “0570 800 111”) stored in the destination subaddress area of the SETUP message. Further, the SETUP distribution control unit 73 stores the acquired destination number “0570 800 111” in the incoming number area of the SETUP message and transmits it to the access point 810.

  Further, the SETUP distribution control unit 73 is based on the routing information stored in the distribution information management unit 74, and is an ISDN network-dependent communication network associated with the destination number (for example, “0570 800 111”). The routing destination on 510 (for example, the port number or address assigned to the access point 810) may be determined, and the SETUP message may be transmitted to the determined routing destination, that is, the access point 810.

  The distribution information management unit 74 generates routing information that associates the destination number with the routing destination on the ISDN network-dependent communication network 510, or changes the contents thereof. In addition, the distribution information management unit 74 can store the routing information and allow the SETUP distribution control unit 73 to refer to the contents.

The operation unit 75 provides an interface for the operation / maintenance operator of the SETUP distribution apparatus 710 to operate the SETUP distribution apparatus 710. For example, the operation unit 75 has a function of acquiring a command input by the operation / maintenance person, The display function etc. which display the state of are provided.
(3) Configuration of Conversion Number DB Device 610 Next, the function of each block of the conversion number DB device 610 will be described.

  The data distribution unit 61 distributes radio base station conversion number data, which is conversion number data for each radio base station, to the radio base stations 210 and 211. In this embodiment, the data distribution unit 61 constitutes a distribution unit. Specifically, the data distribution unit 61 distributes the radio base station-specific conversion number data generated by the conversion number data management unit 62 to the radio base stations 210 and 211 via the ISDN network-dependent communication network 510.

  The conversion number data management unit 62 generates conversion number data for each radio base station. In this embodiment, the conversion number data management unit 62 constitutes a conversion number data generation unit for each radio base station.

  Specifically, the conversion number data management unit 62 generates radio base station-specific conversion number data based on information on the destination number and the specific PRI number input via the operation unit 63. Also, the conversion number data management unit 62 can store the generated conversion base number data for each radio base station.

  As described above, the conversion number data management unit 62 stores the conversion number data for each radio base station as shown in FIG.

The operation unit 63 provides an interface for an operation / maintenance person of the conversion number DB device 610 to operate the conversion number DB device 610. For example, a function or device for acquiring a command input by the operation / maintenance person The display function etc. which display the state of are provided. The operation unit 63 is used to input information such as a destination number and a specific PRI number.
(Communication method)
Next, a communication method using the communication system described above will be described. FIG. 4 shows a communication sequence until the mobile terminal 110 starts communication with the access point 810.

  As shown in the figure, first, in step S0, the radio base station 210 determines that the radio base station 210 is distributed by the radio base station distributed from the conversion number DB device 610 before the mobile terminal 110 starts communication with the access point 810. Stores conversion number data.

  In step S <b> 10, the mobile terminal 110 acquires the called number input by the user. Here, it is assumed that “0570 800 111” is input as the destination number.

  In step S <b> 20, the mobile terminal 110 transmits a SETUP message in which the destination number “0570 800 111” is stored in the incoming number area to the radio base station 210. Specifically, the mobile terminal 110 transmits a SETUP message as shown in FIG. 7A to the radio base station 210.

  In step S30, the radio base station 210 executes a “number comparison conversion process”. FIG. 5 shows the contents of the “number comparison conversion process”. As shown in the figure, in step S110, the radio base station 210 receives a SETUP message from the mobile terminal 110.

  In step S120, the radio base station 210 is included in the destination number “0570 800 111” stored in the incoming number area of the SETUP message and the conversion number data stored in the conversion number data storage unit 24. Compare the incoming call number.

  In step S130, the radio base station 210 determines whether or not the destination number “0570 800 111” is included in the conversion number data stored in the conversion number data storage unit 24.

  Specifically, the radio base station 210 uses the conversion number data (see FIG. 3) related to the “base station 210” distributed by the conversion number DB device 610 to specify the destination number “0570 800 111”. It is determined whether the PRI number “0111 111 111” is associated.

  When the destination number “0570 800 111” is not included in the conversion number data (No in step S130), in step S140, the radio base station 210 transmits the SETUP message received from the mobile terminal 110 to the ISDN network 410 as it is. .

  That is, the SETUP control unit 23 of the radio base station 210 stores the destination number in the incoming number area (first area) of the SETUP message received from the mobile terminal 110 when the destination number is not associated with the specific PRI number. The SETUP message received from the mobile terminal 110 by the data receiving unit 21 is transmitted to the ISDN network 410 without converting the existing destination number. That is, the SETUP message to be transmitted to the ISDN network 410 is transmitted to the ISDN network 410 without being converted in the radio base station 210, and the mobile terminal 110 can communicate via the ISDN network 410. it can.

  On the other hand, when the destination number is included in the conversion number data (Yes in step S130), in step S150, the radio base station 210 converts the content of the received SETUP message based on the conversion number data.

  Specifically, as shown in FIG. 7, the radio base station 210 stores the destination number “0570 800 111” stored in the destination number area of the SETUP message in the destination subaddress area of the SETUP message. Then, the specific PRI number “0111 111 111” associated with the destination number “0570 800 111” is stored in the incoming number area.

  Here, it is assumed that the process of step S150 has been executed.

  In step S160, the radio base station 210 transmits the converted SETUP message to the ISDN network 410.

  Next, as shown in FIG. 4, in step S40, the ISDN network 410 joins based on the specific PRI number “0111 111 111” received from the radio base station 210 and stored in the incoming number area of the SETUP message. To the subscriber module 310, that is, to route to the POI 3101 by the subscriber module loopback function.

  In step S 50, the ISDN network 410 (subscriber module 310) transmits the received SETUP message to the ISDN network-dependent communication network 510 via the POI 3101.

  In step S60, the SETUP sorting apparatus 710 executes “sorting processing” of the received SETUP message. Here, FIG. 6 shows the content of the “distribution process”. As shown in the figure, in step S210, the SETUP distribution device 710 stores the destination number “0570 800 111” stored in the destination subaddress area of the received SETUP message and the distribution information management unit 74. Compare the routing information.

  In step S220, the SETUP distribution device 710 determines a routing destination (access point 810 or access point 811) based on the destination number “0570 800 111” stored in the destination subaddress area.

  Here, since the destination number “0570 800 111” is stored in the destination subaddress area (Yes in step S220), in step S230, the SETUP sorting apparatus 710 uses the destination number “0570 800 111” as the incoming number. The SETUP message is stored in the area and transmitted to the access point 810.

  When the destination number “0570 800 999” is stored in the destination subaddress area, the SETUP distribution device 710 transmits a SETUP message to the access point 811 in step S240.

  Next, as shown in FIG. 4, in step S <b> 70, the access point 810 executes connection processing with the mobile terminal 110 in accordance with the SETUP message transmitted from the SETUP distribution device 710, and Start communication.

In the communication method described above, the case where the mobile terminal 110 starts communication with the access point 810 via the radio base station 210 has been described. However, other mobile terminals (mobile terminals 120 to 140) and radio base stations Even when 211 is used, the communication sequence is the same.
(Action / Effect)
According to the embodiment of the present invention described above, the called party number stored in the called number area of the SETUP message received from the mobile terminal 110 to the mobile terminal 140 is the subscriber module 310 (POI 3101) of the ISDN network 410 or When it is associated with a specific number assigned to the subscriber module 311 (POI 3111), the destination number is stored in the called subaddress area of the call setup message.

  Further, the SETUP distribution device 710 arranged on the ISDN network-dependent communication network 510 connected via the subscriber modules 310 and 311 of the ISDN network 410 is based on the destination number stored in the destination subaddress area. Route the SETUP message to the destination.

  That is, according to such a feature, when communication is performed via the ISDN network-dependent communication network 510 connected to the ISDN network 410 via the subscriber modules 310 and 311, the communication is performed based on the unified destination number. A call to a destination can be received.

  Further, according to the present embodiment, the user does not need to appropriately change the input destination number according to the area where the user exists, and can specify the destination by the unified destination number. it can.

  Further, according to such a feature, the ISDN network-dependent communication carrier can install the radio base stations 210 and 211 and the SETUP distribution device 710, so that it is not necessary to change the function of the ISDN network 410 at all.

According to the present embodiment, since the conversion number data is distributed to the radio base stations 210 and 211, the radio base station is changed according to a change in the configuration of the ISDN network-dependent communication network 510 (for example, addition of an access point). The stations 210 and 211 can quickly update the conversion number data.
(Example of change)
The present invention is not limited to the above-described embodiment, and can be modified as follows, for example. FIG. 8 shows a logical block configuration of a communication system according to a modified example of the present invention. In addition, the same code | symbol is attached | subjected to the component same as embodiment of this invention mentioned above, and the description is abbreviate | omitted.

  As shown in the figure, the terminal device 910 according to this modification includes a data receiving unit 21 ′, a data transmitting unit 22 ′, a SETUP generating unit 23 ′, a conversion number data storage unit 24, and a communication control unit 25. 'And a number acquisition unit 26. In this modification, it is assumed that the terminal device 910 is connected to the subscriber module 310 of the ISDN network 410 by wire instead of the wireless base station 210 described above. Hereinafter, parts different from the above-described radio base station 210 will be mainly described.

  The data receiving unit 21 ′ receives data from the subscriber module 310. The data includes data related to call control such as a SETUP message, data in which an audio signal is encoded, and the like.

  The data transmission unit 22 ′ transmits data to the subscriber module 310.

  The number acquisition unit 26 acquires a destination number input by a user.

  The SETUP generation unit 23 ′ determines whether the destination number acquired by the number acquisition unit 26 is associated with the specific PRI number based on the conversion number data stored in the conversion number data storage unit 24. Is determined.

  If the SETUP generation unit 23 ′ determines that the acquired destination number is associated with the specific PRI number, the SETUP generation unit 23 ′ corresponds to the destination number in the incoming number area (first area) of the SETUP message. In addition to storing the attached specific PRI number and generating the replacement call setting message in which the destination number is stored in the destination subaddress area (second area) of the SETUP message, it constitutes a message generation unit.

  Specifically, the SETUP generation unit 23 'generates a SETUP message having a configuration as shown in FIG.

  The communication control unit 25 ′ controls the transmission and reception of data with the subscriber module 310 and the like.

  According to this modified example, when the ISDN network-dependent communication provider provides a so-called fixed telephone service by wire instead of the mobile communication service, the terminal device 910 is used instead of the wireless base stations 210 and 211 described above. By using, the same effects as those of the communication system according to the embodiment of the present invention described above can be obtained.

1 is a diagram illustrating a network configuration including a communication system according to an embodiment of the present invention. It is a figure which shows the logic block structure of the communication system which concerns on embodiment of this invention. It is a figure which shows an example of the number data for conversion used in the communication system which concerns on embodiment of this invention. It is a figure which shows the communication sequence which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the radio base station which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the communication control apparatus (SETUP distribution apparatus 710) which concerns on embodiment of this invention. It is a figure which shows the structural example of the call setup message (SETUP message) used in the communication system which concerns on embodiment of this invention. It is a figure which shows the logical block structure of the communication system which concerns on the example of a change of this invention.

Explanation of symbols

21, 21 ′... Data receiver, 22, 22 ′ data transmitter, 23, SETUP controller, 23 ′ SETUP generator, 24, conversion number data storage, 25, 25 ′, communication controller, 26 Number acquisition unit, 61 ... Data distribution unit, 62 ... Conversion number data management unit, 63 ... Operation unit, 71 ... Data reception unit, 72 ... Data transmission unit, 73 ... SETUP distribution control unit, 74 ... Distribution information management unit 75, operation unit, 110 to 140, mobile terminal, 210, 211, wireless base station, 310, 311 ... subscriber module, 410 ... ISDN network, 510 ... ISDN network-dependent communication network, 610 ... conversion number DB device, 710 ... SETUP distribution device, 810, 811 ... access point, 3101, 3111 ... POI (Point of Interface), S1 ... common part, S2 ... individual part

Claims (12)

A communication method used in a communication system configured by a radio base station connected to an ISDN network and a communication control device arranged on a communication network connected via a subscriber module of the ISDN network,
In the radio base station, there is conversion number data in which a destination number assigned to a destination connected via the communication network and a specific number assigned to the subscriber module are associated with each other. Stored,
The radio base station receiving a call setup message in which the destination number is stored in a first area from a terminal device;
The radio base station stores the destination number stored in the first area of the call setting message based on the conversion number data in the second area of the call setting message, and Converting the specific number associated with the called number into a replacement call setting message stored in the first area;
The communication control unit transmitting a call setting message to the destination based on the destination number stored in the second area of the replacement call setting message obtained via the ISDN network; A communication method comprising: A communication system comprising a radio base station connected to an ISDN network and a communication control device arranged on a communication network connected via a subscriber module of the ISDN network,
The radio base station is
Conversion number data for storing conversion number data in which a destination number assigned to a destination connected via the communication network is associated with a specific number assigned to the subscriber module A storage unit;
A receiving unit for receiving a call setup message in which the destination number is stored in a first area from a terminal device;
Based on the conversion number data, the destination number stored in the first area of the call setup message is stored in the second area of the call setup message and is associated with the destination number. A message conversion unit for converting the specific number being converted into a replacement call setting message stored in the first area;
The communication control device includes:
A message distribution unit for transmitting the call setting message to the destination based on the destination number stored in the second area of the replacement call setting message obtained via the ISDN network; A featured communication system. The communication system further includes a database device that manages the conversion number data;
The database device includes:
Radio base station-specific conversion number data generation unit for generating radio base station-specific conversion number data that is the conversion number data for each radio base station;
The communication system according to claim 2, further comprising a distribution unit that distributes the wireless base station number data to the wireless base station. A communication network and an ISDN network are connected via a subscriber module of the ISDN network, and a radio base station connected to the ISDN network,
Conversion number data for storing conversion number data in which a destination number assigned to a destination connected via the communication network is associated with a specific number assigned to the subscriber module A storage unit;
A receiving unit for receiving a call setup message in which the destination number is stored in a first area from a terminal device;
Based on the conversion number data, the destination number stored in the first area of the call setup message is stored in the second area of the call setup message and is associated with the destination number. A radio base station, comprising: a message conversion unit that converts the specific number stored in the first area into a replacement call setting message stored in the first area. A conversion number data receiving unit for receiving conversion number data for each radio base station that is the conversion number data for each of the radio base stations;
The radio base station according to claim 4, wherein the conversion number data storage unit stores the received radio base station-specific conversion number data. The message conversion unit does not convert the received call setting message when the destination number is not associated with the specific number,
The radio base station according to claim 4 or 5, wherein the call setting message received by the receiving unit from the terminal device is transmitted to the ISDN network. A communication control device arranged on a communication network connected via a subscriber module of an ISDN network,
A destination number assigned to a destination, stored in a second area of the call setup message acquired via the ISDN network, is stored in the first area of the call setup message, and the destination number Comprising a message distribution unit for transmitting a call setup message stored in the first area to the destination. A communication network and an ISDN network are connected via a subscriber module of the ISDN network, and a terminal device connected to the ISDN network,
Conversion number data for storing conversion number data in which a destination number assigned to a destination connected via the communication network is associated with a specific number assigned to the subscriber module A storage unit;
A number acquisition unit for acquiring the destination number;
Based on the number data for conversion, a replacement in which the specific number associated with the destination number is stored in a first area and the destination number is stored in a second area of the call setup message A terminal device comprising: a message generation unit that generates a call setting message.   In the conversion number data, when the destination number is not associated with the specific number, the radio base station received the destination number stored in the first area without conversion. The communication method according to claim 1, wherein the call setup message is transmitted to the ISDN network.   The message conversion unit receives the destination number stored in the first area without converting when the destination number is not associated with the specific number in the conversion number data. 4. The communication system according to claim 2, wherein the call setup message is transmitted to the ISDN network.   The message conversion unit receives the destination number stored in the first area without converting when the destination number is not associated with the specific number in the conversion number data. The radio base station according to claim 4, wherein the call setup message is transmitted to the ISDN network.   In the conversion number data, the message generator receives the destination number stored in the first area without conversion when the destination number is not associated with the specific number. The terminal apparatus according to claim 8, wherein the call setup message is transmitted to the ISDN network.

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