JP2013251861A - Voice call control system, control device, and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably select a telephone line in a system where a voice call by a portable telephone can be performed via a PBX.SOLUTION: A voice call system letting a PBX and a portable telephone work in cooperation includes: a call request acquisition unit which acquires a call request including terminal identification information for identifying a portable telephone which is requested to talk with; a called party information acquisition unit which, on the basis of stored correlation information having a telephone number needed for requesting a call to the portable terminal and common carrier identification information for identifying a common carrier providing the portable telephone with a communication network correlated with each other, acquires the telephone number corresponding to terminal identification information included in the call request and the common carrier identification information; a common carrier selection unit which selects a common carrier on the basis of the acquired common carrier identification information; and a call request transmission unit which sends a message requesting a voice call to the acquired telephone number via the communication network of the selected common carrier.

Description

  The present invention relates to a voice call control system, a control apparatus, and a control method, and more particularly to control when a voice call exchange function and a mobile communication terminal are linked in a predetermined area.

  A service called FMC (Fixed Mobile Convergence) is provided that makes it possible to use a mobile phone as a handset of a fixed phone by combining mobile communication such as a mobile phone and wired communication. By using the FMC service, for example, a call between mobile phones using an FMC service provided by a certain carrier is handled as an extension call by the FMC service, and there is a merit in terms of call charges.

  In such an FMC service, in order to link FMC services provided by different carriers, identification information for uniquely identifying each mobile phone regardless of the FMC service to which it belongs, and the FMC service to which each mobile phone belongs. There has already been proposed a method of transferring to the FMC service to which the mobile phone of the call request destination belongs when a call request is made by associating with the identification information for identifying (for example, see Patent Document 1).

  In the technique disclosed in Patent Document 1, an IP (Internet Protocol) telephone is assumed. On the other hand, an IP phone using packet communication using a 3G line is inferior in sound quality to a voice call originating from a normal mobile phone, and therefore a system based on the assumption that a voice call originating from a normal mobile phone is used. Construction is required.

  In the case of a voice call based on a mobile phone call, each telecommunications carrier provides a charge plan, and depending on the choice of the charge plan, the call charge can be greatly reduced. However, depending on the function of PBX (Private Branch eXchange) that controls the transmission and transfer of voice calls within a predetermined area, the conditions for enjoying the benefits according to the price plan when calling and transferring voice calls are met. There is a possibility that the line is not selected.

  The present invention has been made to solve such a problem, and in a system capable of performing a voice call by a mobile phone via a voice call exchange function in a predetermined area, a telephone line is selected. It aims at performing suitably.

  In order to solve the above-described problem, an aspect of the present invention is a voice call system that links a voice call exchange function and a mobile communication terminal in a predetermined area, and a mobile unit to which a voice call is requested A voice call request acquisition unit for acquiring a voice call request including terminal identification information for identifying a communication terminal, a telephone number for requesting a voice call to the mobile communication terminal, and a communication network of the mobile communication terminal Based on the association information stored in association with the terminal identification information, the carrier identification information for identifying the provided carrier is based on the telephone number corresponding to the terminal identification information included in the voice call request, and the A transmission destination information acquisition unit for acquiring communication carrier identification information; a communication carrier selection unit for selecting a communication carrier for making a voice call based on the acquired communication carrier identification information; To the resulting it has been the telephone number, characterized in that it comprises a call request transmission unit for performing a call to request a voice call via a communication network selected the communication carrier.

  According to another aspect of the present invention, there is provided a voice call control device for linking a voice call exchange function within a predetermined area and a mobile communication terminal for requesting a voice call from the mobile communication terminal. The carrier identification information for identifying the telephone carrier and the carrier providing the communication network of the mobile communication terminal is associated with the terminal identification information for identifying the mobile communication terminal to which a voice call is requested. A destination information acquisition unit for acquiring the telephone number and the communication carrier identification information corresponding to the terminal identification information included in the voice call request, and the acquired communication carrier A communication carrier selection unit that selects a communication carrier when making a voice call based on the identification information, and a voice call via the communication network of the selected communication carrier for the acquired telephone number Need Characterized in that it comprises a call request transmission section for performing outgoing for.

  According to still another aspect of the present invention, there is provided a voice call control method for linking a voice call exchange function and a mobile communication terminal within a predetermined area, wherein a destination mobile communication terminal that requests a voice call is provided. A voice call request including terminal identification information for identification is acquired, and a telephone number for requesting a voice call to the mobile communication terminal and a communication carrier providing a communication network of the mobile communication terminal are identified. Based on the association information stored in association with the terminal identification information is acquired the telephone number and the carrier identification information corresponding to the terminal identification information included in the voice call request, Based on the acquired communication carrier identification information, a communication carrier for making a voice call is selected, and voice is transmitted to the acquired telephone number via the selected communication carrier's communication network. And performing a call to request a story.

  ADVANTAGE OF THE INVENTION According to this invention, in the system which can perform the voice call by a mobile telephone via the exchange function of the voice call within a predetermined area | region, selection of a telephone line can be performed suitably.

It is a figure which shows the operation | use form of the system which concerns on embodiment of this invention. It is a block diagram which shows typically the hardware constitutions of the information processing apparatus which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the PBX server which concerns on embodiment of this invention. It is a figure which shows the example of the information managed in the correlation server which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the gateway server which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the client terminal which concerns on embodiment of this invention. It is a sequence diagram which shows the transmission operation | movement which concerns on embodiment of this invention. It is a figure which shows the contact selection screen in the client terminal which concerns on embodiment of this invention. It is a figure which shows the example of the information exchanged in the system which concerns on embodiment of this invention. It is a sequence diagram which shows the incoming call operation | movement which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a system capable of using a voice call by a mobile phone like an extension phone by linking a PBX (Private Branch eXchange) with a mobile phone line provided by a communication carrier. This will be described as an example.

  FIG. 1 is a diagram illustrating an example of an operation mode of a system according to the present embodiment. As shown in FIG. 1, the system according to the present embodiment includes a PBX server 1, an association server 2, a gateway server 3, and client terminals 4a and 4b. The PBX server 1 and the association server 2 are connected to the service provider network F, and the service provider network F is connected to the Internet line A.

  The service provider's network F is connected to the gateway server 3 installed at the base of the service introducer via the Internet line A. Further, the communication between the service provider network F and the gateway server 3 is realized as a VPN (Virtual Private Network) communication B by being encrypted with a common encryption key.

  The gateway server 3 has a communication path between the private line C, which is a network line in the base of the service introducer, a plurality of telephone lines D respectively provided by a plurality of communication carriers, and the Internet line A. Functions as a router that performs control.

  The client terminals 4a and 4b (hereinafter collectively referred to as the client terminal 4) are mobile communication terminals such as mobile phones carried by users belonging to the service introducer's organization, such as company employees who are service introducers. . The client terminal 4 performs wireless communication via the 3G line E provided by the communication carrier with which each terminal has a contract, and when connected to the Internet, the voice call by telephone via the Internet line A In the case of performing communication, communication is performed via the telephone line D.

  Next, the hardware configuration of the information processing apparatus included in the system according to the present embodiment, such as the PBX server 1, the association server 2, the gateway server 3, and the client terminal 4 according to the present embodiment, will be described with reference to FIG. To do.

  As shown in FIG. 2, the information processing apparatus according to the present embodiment includes a configuration similar to that of a general server, a PC (Personal Computer), or the like. That is, the information processing apparatus according to the present embodiment includes a CPU (Central Processing Unit) 10, a RAM (Random Access Memory) 20, a ROM (Read Only Memory) 30, a HDD (Hard Disk Drive) 40, and an I / F 50. Connected through. Further, an LCD (Liquid Crystal Display) 60 and an operation unit 70 are connected to the I / F 50.

  The CPU 10 is a calculation means and controls the operation of the entire information processing apparatus. The RAM 20 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 10 processes information. The ROM 30 is a read-only nonvolatile storage medium and stores a program such as firmware. The HDD 40 is a non-volatile storage medium that can read and write information, and stores an OS (Operating System), various control programs, application programs, and the like.

  The I / F 50 connects and controls the bus 80 and various hardware and networks. The LCD 60 is a visual user interface for confirming the state of the distribution server 2. The operation unit 70 is a user interface for a user to input information to the information processing apparatus, such as a keyboard, a mouse, and a touch panel. As described with reference to FIG. 1, user interfaces such as the LCD 60 and the operation unit 70 can be omitted in an apparatus operated as a server among the information processing apparatuses according to the present embodiment.

  In such a hardware configuration, a program stored in a storage medium such as the ROM 30, the HDD 40, or an optical disk (not shown) is read into the RAM 20, and operates according to the control of the CPU 10, thereby configuring a software control unit. A functional block for realizing the functions of the document management server 1 and the user terminal 2 according to the present embodiment is configured by a combination of the software control unit configured as described above and hardware.

  Next, the configuration of the PBX server 1 according to the present embodiment will be described with reference to FIG. As illustrated in FIG. 3, the PBX server 1 according to the present embodiment includes a controller 100 and a network I / F 110, and the controller 100 includes a PBX application 101 and a communication control unit 102. In this embodiment, the PBX server 1 is described as a single device. However, the PBX server 1 may be realized by being distributed to a plurality of devices, or functions of a plurality of PBX servers 1 virtually in a single device. May be realized. Further, the PBX server 1 and the association server 2 may be realized by a single device.

  The network I / F 110 is an interface for the PBX server 1 to communicate with other devices via the network, and an interface such as Ethernet (registered trademark) is used. The network I / F 110 is realized by the I / F 50 shown in FIG.

  The controller 100 is configured by a combination of software and hardware. Specifically, a program stored in a nonvolatile storage medium such as the ROM 30 and the nonvolatile memory and the HDD 40 and the optical disk is loaded into a volatile memory (hereinafter referred to as a memory) such as the RAM 20, and the CPU 10 performs an operation according to the program. The controller 100 is configured by a software control unit configured by performing and hardware such as an integrated circuit. The controller 100 functions as a control unit that controls the entire PBX server 1.

  The PBX application 101 is a software module that realizes functions that the PBX server 1 should bear. The PBX application 101 according to the present embodiment has a function of performing outgoing call control based on a call request input by packet communication, selection control of a telephone line provided by each communication carrier when making a call to a mobile phone, etc. Have The communication control unit 102 receives information from other devices connected to the network via the network I / F 110 and transmits information to other devices via the network I / F 110.

  Next, information managed in the association server 2 according to the present embodiment will be described with reference to FIG. The association server 2 according to the present embodiment accumulates and manages information related to the client terminals 4 belonging to the system according to the present embodiment using a terminal information database. As shown in FIG. 4, in the terminal information database according to the present embodiment, “terminal ID”, “extension number”, “external number”, and “carrier ID” are managed in association with each other. That is, the terminal information database is used as the association information.

  “Terminal ID” is identification information for uniquely identifying the client terminal 4 belonging to the system according to the present embodiment. The “extension number” is a telephone number used by the client terminal 4 belonging to the system according to the present embodiment to request another client terminal 4 that also belongs to the system to make a voice call by handling the extension.

  The “external line number” is a telephone number used for requesting a voice call through a normal telephone line to the client terminals 4 belonging to the system according to the present embodiment. “Carrier ID” is used to identify a carrier that provides a 3G line E for connecting to the telephone line D or the Internet line A, that is, the carrier, for each of the client terminals 4 belonging to the system according to the present embodiment. Identification information.

  In the example of FIG. 4, the “terminal ID” and the “extension number” are different from each other. However, the “extension number” is similar to the “terminal ID” in the system for each client terminal 4. Therefore, it is possible to use “extension number” as “terminal ID”. That is, either “terminal ID” or “extension number” is used as terminal identification information. Since the information shown in FIG. 4 is stored and managed, the association server 2 can, for example, send an “external number” associated with the “terminal ID” when a call request is made with “terminal ID” specified. It is possible to perform transmission control to "."

  Next, the configuration of the gateway server 3 according to the present embodiment will be described with reference to FIG. As shown in FIG. 5, the gateway server 3 according to the present embodiment includes a controller 300, a network I / F 310, a telephone line I / F 320, and a local line I / F 330. The controller 300 includes a routing application 301 and a communication control unit. 302 is included.

  The network I / F 310 is an interface for the gateway server 3 to communicate with other devices via the Internet line A, and an interface such as Ethernet (registered trademark) is used. The telephone line I / F 320 is an interface for the gateway server 3 to communicate with other devices via the telephone line D. The local line I / F 330 is an interface for the gateway server 3 to communicate with other devices via the local line C. For the telephone line I / F 320 and the local line I / F 330, interfaces corresponding to the telephone line D and the local line C are used.

  Similar to the controller 100 of the PBX server 1, the controller 100 is configured by a combination of software and hardware. The controller 300 functions as a control unit that controls the entire gateway server 3. The routing application 301 is a software module that realizes a function to be performed by the routing server 3. The routing server 3 has a function of controlling a communication path among the Internet line A, the VPN communication B, the local line C, and the telephone line D, and the routing application 301 corresponds to the content of the communication command received by the gateway server 3. Then, the protocol is converted, and the command is transferred to the network I / F 310, the telephone line I / F 320, and the local line I / F 330 via the communication control unit 302.

  The communication control unit 302 receives information from other devices connected to the network via the respective communication interfaces of the network I / F 310, the telephone line I / F 320, and the local line I / F 330 according to the control of the routing application 301. At the same time, information is transmitted to other devices via the respective communication interfaces. Further, the communication control unit 302 has a function for realizing the VPN communication B with the network F of the service provider.

  Next, the configuration of the client terminal 4 according to the present embodiment will be described with reference to FIG. As shown in FIG. 6, the client terminal 4 according to the present embodiment includes a controller 400, a network I / F 410, and a 3G communication I / F 420 in addition to the LCD 60 and the operation unit 70 described in FIG. The controller 400 includes a network control unit 401, an operation control unit 402, a display control unit 403, a 3G communication control unit 404, and a client application 405.

  The network I / F 410 is an interface for the client terminal 4 to communicate with other devices via the Internet line A, and an interface such as Ethernet (registered trademark) is used. In FIG. 1, the client terminal 4 is not directly connected to the Internet line A, but is connected via the 3G line E. The network I / F 410 is an interface used when the client terminal 4 communicates via the Internet line A without going through the 3G line E, and uses a wired network interface, a Wi-Fi (Wireless Fidelity) interface, or the like. It is done. The 3G remote communication I / F 420 is an interface for the client terminal 2 to communicate with other devices via the 3G line E, and includes a transmitter, an antenna, and the like for wireless communication.

  Similar to the controller 100 of the PBX server 1, the controller 400 is configured by a combination of software and hardware. The controller 400 is a control unit that controls the entire client terminal 4. The network control unit 401 acquires information input via the network I / F 410 and transmits information to other devices via the network I / F 410.

  Further, when performing information transmission through the Internet line A via the 3G line E, the network control unit 401 passes information to be transmitted to the 3G communication control unit 404. Similarly, when information is received from the Internet line A via the 3G line E, the network control unit 410 acquires information received via the 3G communication I / F 420 from the 3G communication control unit 404. The 3G communication control unit 404 acquires information input via the 3G communication I / F 420 and transmits information to other devices via the 3G communication I / F 420.

  The operation control unit 402 acquires a signal of an operation content by the user with respect to the operation unit 70 and inputs it to a module operating in the client terminal 4 such as the client application 405. The display control unit 403 displays the state of the client terminal 4 on the LCD 60 such as a GUI (Graphical User Interface) of the client application 405.

  The client application 405 is configured by a software program that is installed and operates in the client terminal 4 in order to use the functions of the system according to the present embodiment in the client terminal 4. The client application 405 has a function of performing a call request for a voice call via the Internet line A, a voice call incoming process via the telephone line D and the 3G line E, and the like.

  In addition, the client application 405 includes a function for realizing encrypted communication via the VPN communication B when the client terminal 4 communicates with the service provider network F via the Internet line A. .

  Next, the operation of the system according to this embodiment will be described. FIG. 7 is a sequence diagram showing an operation when an extension is transmitted from one client terminal 4a to the client terminal 4b in the system according to the present embodiment. As shown in FIG. 7, first, the client application 405 of the client terminal 4a makes a call request to the association server 2 via the Internet line A in response to a user operation (S701).

  In S701, the contact selection GUI as shown in FIG. 8 is displayed on the LCD 60 of the client terminal 4a. The client application 405 generates and displays the display information on the client terminal 4a by downloading the information in the terminal information database from the association server 2 via the Internet line A, for example, on the screen shown in FIG.

  When the user selects a destination for requesting a voice call on the screen as shown in FIG. 8, the client application 405 sends a call request including information as shown in FIG. A is transmitted to the association server 2 via A. At this time, the exchanged information is encrypted as VPN communication B as described above.

  As shown in FIG. 9A, in the call request in S701, “header information” indicating that the call is requested, “destination terminal ID” for identifying the client terminal 4b that requests the call, A “source terminal ID” for identifying the requesting original client terminal 4a is included. The “destination terminal ID” and “source terminal ID” correspond to the “terminal ID” shown in FIG.

  When the association server 2 receives the call request from the client terminal 4a, the “external number” and “carrier” corresponding to “destination terminal ID” and “source terminal ID”, respectively, based on the terminal information database described in FIG. ID "is acquired as" destination outside line number "," destination carrier ID "," source outside line number ", and" source carrier ID ", and the call request information shown in FIG. ) And transferred to the PBX server 1 (S702). That is, in S701, a software module configured by the CPU 10 performing an operation in the association server 2 functions as a voice call request acquisition unit.

  In the PBX server 1 that has received the call request transfer, the PBX application 101 acquires the converted call request information shown in FIG. That is, in S702, the PBX application 101 functions as a transmission destination information acquisition unit. In the sequence diagram of FIG. 7, it is the association server that extracts “destination external line number” and “destination carrier ID” based on “terminal ID” which is terminal identification information. In that the information is acquired based on the database, the PBX application 101 is still executing the same processing.

  Upon receiving the call request, the PBX application 101 first selects a carrier for return call to the caller client terminal 4a based on the “caller carrier ID” (S703). That is, the PBX application 101 functions as a communication carrier selection unit. Then, the PBX application 101 makes a return call to the “source outside line number” via the carrier selected in S703 (S704). That is, the PBX application 101 functions as a call request transmission unit.

  The return transmission by the PBX server 1 in S704 is transmitted to the gateway server 3 by the VPN communication B via the Internet line A. When the gateway server 3 receives a return call from the PBX server 1, the routing application 301 controls the telephone line I / F 320 based on the “source outside line number” specified in the return call and the selected carrier. By doing so, the return transmission is transferred (S705).

  The return call transferred by the gateway server 3 is notified via the telephone line D and 3G line E to the client terminal 4a that made the call request in S701. Thereby, the client terminal 4a establishes a session for a voice call with the gateway server 3 (S706).

  The transfer process of the return call by the gateway server 3 in S705 is a transfer process starting from the return call by the PBX server 1. However, if the telephone line D is used as a reference, the process of S705 is a calling process via the telephone line D. At this time, the carrier selected in S703 is used as the telephone line D. Therefore, the session established in S706 is via the 3G line E to which the client terminal 4a corresponds and the telephone line D provided by the telecommunications carrier that provides the 3G line.

  That is, since communication between the gateway server 3 and the client terminal 4a in return transmission is all performed through the same carrier, it is possible to save a call charge according to the charge plan provided by the carrier. Although not shown in FIG. 7, when a session is established between the gateway server 3 and the client terminal 4a, the gateway server 3 may notify the PBX server 1 of the establishment of the session. Thereby, the PBX server 1 can clearly determine the timing of proceeding to the next process.

  When a session is established between the gateway server 3 and the client terminal 4a, the PBX application 101 of the PBX server 1 next transmits a voice call to the destination client terminal 4b based on the “destination carrier ID”. Is selected (S707). That is, also in S707, the PBX application 101 functions as a communication carrier selection unit. Then, the PBX application 101 makes a call request, that is, a call, to the “destination outside line number” via the carrier selected in S707 (S708). That is, in S708, it functions as a call request transmission unit.

  The call made by the PBX server 1 in S708 is transmitted to the gateway server 3 by the VPN communication B via the Internet line A. When the gateway server 3 receives a call from the PBX server 1, the routing application 301 changes the telephone line I / F 320 based on the “source outside line number” designated in the call and the selected carrier. By controlling, the outgoing call is transferred (S709).

  The call transfer process by the gateway server 3 in S709 is a transfer process when the call from the PBX server 1 is the starting point. However, when the telephone line D is used as a reference, the process of S709 is a calling process via the telephone line D. At this time, the carrier selected in S707 is used as the telephone line D. Therefore, when a session is established between the client terminal 4b and the gateway server 3 by a call, the session is provided by the 3G line E to which the client terminal 4b corresponds and the communication carrier that provides the 3G line. Via the telephone line D.

  That is, since communication between the gateway server 3 and the client terminal 4b in the outgoing call is all performed through the same carrier, it is possible to save a call charge according to the charge plan provided by the carrier.

  The PBX application 101 of the PBX server 1 makes a call to the client terminal 4b via the gateway server 3, and notifies the association server 2 that the call has been made to the client terminal 4b that is the destination (S710). . The association server 2 that has received the notification that the call has been made uses the Internet line as a number for displaying the “extension number” of the client terminal 4a that is the call source on the incoming call screen of the client terminal 4b that is the call destination. Notification is made via A (S711). That is, in S711, a software module configured by the CPU 10 performing an operation in the association server 2 functions as a number notification unit.

  In the client terminal 4b that has received the call from the gateway server 3 and the number notification from the association server 2, the client application 405 causes the LCD 60 to display a voice call incoming screen via the display control unit 403 (S712). At this time, since it is the gateway server 3 that is actually making the call, the outside line number of the gateway server 3 is normally displayed on the incoming call screen, and the user of the client terminal 4b receives the incoming call from whom. I cannot judge whether it is.

  On the other hand, in the system according to the present embodiment, the client application 405 recognizes that there is an incoming call based on the incoming call of a normal telephone, and also sends the number notified from the association server 2 to the incoming call The number is displayed on the LCD 60 as a number. That is, the client application 405 functions as a request source information display unit. For this reason, the user of the client terminal 4b can determine who the incoming call is from. By such an operation, the extension transmission operation in the system according to the present embodiment is completed.

  According to the operation shown in FIG. 7, the source client terminal 4 and the gateway server 3 are connected by a line of a communication carrier that provides a 3G line corresponding to the source client terminal 4. The destination client terminal 4 and the gateway server 3 are connected by a line of a communication carrier providing a 3G line corresponding to the destination client terminal 4. Therefore, it is possible to save a call charge between the gateway server 3 and each client terminal 4 by using a charge plan provided by each communication carrier.

  Next, an operation in a case where an incoming call from another telephone not belonging to the system according to the present embodiment to the extension telephone is transferred to the client terminal 4 will be described with reference to FIG. As shown in FIG. 10, the gateway server 3 receives an incoming call from the telephone line D (S1001). The gateway server 3 that has received the incoming telephone call establishes a session with the outgoing call source telephone (S1002), and sends an incoming call notification including the outgoing telephone number and the outgoing telephone number to the PBX server 1. Transmit (S1003). Here, the destination telephone number is information corresponding to “extension number” in the information shown in FIG. The notification in S1003 is transmitted via the Internet line A, and the communication content is encrypted by the VPN communication B.

  The PBX server 1 that has received the incoming line incoming notification notifies the associated server 2 of the destination telephone number, thereby receiving the “external number” and “carrier ID” associated with the notified “extension number”. Is acquired as a transfer destination (S1004). The PBX server 1 that has acquired the transfer destination of the incoming call selects a communication carrier's line to be used for transfer of the incoming call based on the acquired “carrier ID” (S1005), and makes a call request to the acquired “external line number”. That is, a call is made (S1006).

  Thereafter, the same processing as S709 and subsequent steps in FIG. 7 is executed, whereby the incoming call to the extension telephone is transferred to the client terminal 4 which is a mobile communication terminal. Therefore, even when the user of the client terminal 4b is out, the user can receive a call for the extension telephone at the destination. Even in the case of the operation in FIG. 10, the voice call between the gateway server 3 and the client terminal 4b is performed through a carrier corresponding to the client terminal 4b. Therefore, similarly to the above, it is possible to save a call charge between the gateway server 3 and the client terminal 4 by using a charge plan provided by a communication carrier.

  As described above, in the system according to the present embodiment, when the voice call exchange function in a predetermined area such as PBX and the mobile communication terminal are linked, the voice communication with the mobile communication terminal is performed using the Internet. Since the telephone line D is used without using the packet communication via the line A, it is possible to prevent the voice quality from being deteriorated during the call.

  In addition, the call charges generated through the telephone line D are provided by each telecommunications carrier in order to select a line according to the telecommunications carrier providing each mobile communication terminal. You can enjoy the benefits of the price plan and save on call charges. As an example of a charge plan provided by a telecommunications carrier, there is a service that provides a flat fee regardless of the call time if the caller carrier and the callee carrier are the same.

  Here, the gateway server 3 is the source in the examples of FIGS. Accordingly, by combining the carrier of the telephone line D with which the gateway server 3 communicates via the telephone line I / F 320 with the carrier of the client terminal 4 as the call destination, it is possible to enjoy the advantages of the flat fee as described above. Is possible. Such a merit is the same even in the case of the return call shown in S704 and S705 of FIG. 7 and the case of the call shown in S708 and S709.

  As described above, in the system according to the present embodiment, it is preferable to select a telephone line in a system capable of performing a voice call using a mobile phone via a voice call exchange function within a predetermined area. Can be done.

  In the above embodiment, the case where the telephone number of the caller of the voice call is notified in S711 of FIG. 7 or S1009 of FIG. 10 has been described as an example. However, the purpose of this process is to display information that can identify the caller, not the telephone number of the gateway server 3, at the client terminal 4b that is the callee. Therefore, in S711 and S1009, in addition to the telephone number, information identifying a user associated in the terminal information database may be notified in addition to the terminal ID described above.

DESCRIPTION OF SYMBOLS 1 PBX server 2 Association server 3 Gateway server 4, 4a, 4b Client terminal 10 CPU
20 RAM
30 ROM
40 HDD
50 I / F
60 LCD
70 Operation Unit 80 Bus 100 Controller 101 PBX Application 102 Communication Control Unit 110 Network I / F
300 Controller 301 Routing Application 302 Communication Control Unit 310 Network I / F
320 Telephone line I / F
330 Premises line I / F
400 controller 401 network control unit 402 operation control unit 403 display control unit 404 3G communication control unit 405 client application 410 network I / F
420 3G communication I / F

Japanese Patent Application Laid-Open No. 2011-135581

Claims (5)

A voice call system for linking a voice call exchange function and a mobile communication terminal within a predetermined area,
A voice call request acquisition unit for acquiring a voice call request including terminal identification information for identifying a mobile communication terminal to request a voice call;
A telephone number for requesting a voice call to the mobile communication terminal and a carrier identification information for identifying a communication carrier providing a communication network of the mobile communication terminal are stored in association with the terminal identification information. Based on the associated information, the destination information acquisition unit for acquiring the telephone number and the carrier identification information corresponding to the terminal identification information included in the voice call request;
A carrier selection unit that selects a carrier when making a voice call based on the acquired carrier identification information;
A voice call system comprising: a call request transmission unit configured to make a call for requesting a voice call to the acquired telephone number via a communication network of the selected communication carrier. The voice call request acquisition unit acquires terminal identification information for identifying a source mobile communication terminal and a destination mobile communication terminal in a voice call between mobile communication terminals belonging to the voice call system,
The transmission destination information acquisition unit, based on the terminal identification information of the acquired mobile communication terminal of the transmission source and the mobile communication terminal of the transmission destination, from the association information, the mobile communication terminal of the transmission source and the Obtain the telephone number and the carrier identification information of each mobile communication terminal of the destination,
The communication carrier selection unit is configured to determine the source mobile communication terminal and the transmission source based on the acquired communication carrier identification information of the transmission source mobile communication terminal and the transmission destination mobile communication terminal. Select the carrier to make a voice call to each of the previous mobile communication terminals,
The call request transmission unit selects the communication carrier selected for each mobile communication terminal with respect to the telephone numbers of the acquired mobile communication terminal of the transmission source and the mobile communication terminal of the transmission destination. 2. The voice call system according to claim 1, wherein a call for requesting a voice call is made through the communication network. When the call request transmission unit makes a call requesting a voice call, a number notification for notifying the mobile communication terminal to which the voice call is requested of the request source of the voice call via packet communication And
A request source information display unit for displaying information of the request source notified through packet communication when displaying a screen for notifying a request for a voice call in a mobile communication terminal to which a voice call is requested; The voice call system according to claim 1 or 2, further comprising: A voice call control device for linking a voice call exchange function and a mobile communication terminal within a predetermined area,
The telephone number for requesting a voice call to the mobile communication terminal and the carrier identification information for identifying the communication provider providing the communication network of the mobile communication terminal are the destinations to which the voice call is requested. Transmission that acquires the telephone number and the carrier identification information corresponding to the terminal identification information included in the voice call request based on the association information stored in association with the terminal identification information for identifying the body communication terminal A prior information acquisition unit;
A carrier selection unit that selects a carrier when making a voice call based on the acquired carrier identification information;
A voice call control device, comprising: a call request transmission unit configured to make a call for requesting a voice call to the acquired telephone number via a communication network of the selected communication carrier. A voice call control method for linking a voice call exchange function and a mobile communication terminal within a predetermined area,
Obtaining a voice call request including terminal identification information for identifying a mobile communication terminal to which a voice call is requested;
A telephone number for requesting a voice call to the mobile communication terminal and a carrier identification information for identifying a communication carrier providing a communication network of the mobile communication terminal are stored in association with the terminal identification information. Based on the associated information, to obtain the telephone number and the carrier identification information corresponding to the terminal identification information included in the voice call request,
Select a carrier when making a voice call based on the acquired carrier identification information,
A voice call control method, wherein a call requesting a voice call is made to the acquired telephone number via a communication network of the selected communication carrier.

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