JP2014116759A - Communication system, communication terminal, control device, intermediary terminal, communication method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable connection to a specific number irrespective of whether a VoIP communication terminal can originate a call to a PSTN.SOLUTION: When a destination number coincident with a specific number is input to a caller terminal, which is a VoIP terminal, position information of the caller terminal is notified to a control device. The control device acquires identification information of an intermediary terminal located near the caller terminal, so as to be reported to the caller terminal. The caller terminal originates a call to the intermediary terminal using the identification information to connect a call and report the destination number. The intermediary terminal originates a call to the destination number, to connect between voice communication with the caller terminal and voice communication with the called party of the destination number when the called party of the destination number answers.

Description

  The present invention relates to an IP telephone communication technique, and more particularly to a technique for making a connection to a telephone number that cannot be used for outgoing calls by a VoIP communication terminal.

With the spread of smartphones and tablets, the use of voice communication (VoIP) applications using IP communication is increasing.
In general, a VoIP communication terminal using such an application cannot be connected to a specific number such as an emergency call. As an example of the prior art for solving this problem, when connecting from a VoIP communication terminal to a specific number, the PSTN gateway to be connected is determined using the IP address of the connected base station or gateway device. Thus, there is a technology that enables call connection between a VoIP communication terminal and a specific number terminal.

Japanese Patent No. 4456428

  However, specifying location information by IP address may be inaccurate. In the conventional method, only a call from a VoIP communication terminal that can make a call to the PSTN can be connected to a specific number, and a call from a terminal that can use VoIP communication only within the IP network is connected to a specific number. I couldn't.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a technology that enables connection to a specific number regardless of whether or not a VoIP communication terminal can make a call to a PSTN.

In order to solve the above problems, the present invention is a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
The caller terminal is
Means for determining whether or not the input destination number matches a predetermined specific number;
Means for notifying the control device of the destination number and the location information of the caller terminal when the destination number matches the specific number;
Receiving the identification information of the agency terminal from the control device, and making a call to the agency terminal using the identification information,
The control device includes:
Storage means for storing identification information and location information for a plurality of agency terminals;
Means for comparing the position information received from the caller terminal with the position information stored in the storage means and obtaining identification information of the agency terminal corresponding to the position information indicating a position close to the position of the caller terminal; ,
Means for notifying the caller terminal of the acquired identification information of the agency terminal,
The agency terminal is
Means for making a call connection with the caller terminal by a call from the caller terminal;
Means for receiving the destination number from the caller terminal or the control device and making a call to the destination number;
Means for connecting voice communication with the caller terminal connected to the call and voice communication with the destination of the destination number when the destination of the destination number responds, Configured as a communication system.

Further, the present invention is the communication terminal in a communication system including a communication terminal and a control device connected to a communication network,
Means for determining whether or not the input destination number matches a predetermined specific number;
When the destination number matches the specific number, the communication terminal can be configured to include means for notifying the control device of the destination number and the location information of the communication terminal. .

Further, the present invention is the control device in a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
Storage means for storing identification information and location information for a plurality of agency terminals;
Means for comparing the position information received from the caller terminal with the position information stored in the storage means and obtaining identification information of the agency terminal corresponding to the position information indicating a position close to the position of the caller terminal; ,
And a means for notifying the caller terminal of the acquired identification information of the agency terminal.

Further, the present invention is the agency terminal in a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
Means for making a call connection with the caller terminal by a call from the caller terminal;
Means for receiving a destination number from the caller terminal or the control device and causing a communication unit having a function of communicating with a destination of the destination number to make a call to the destination number;
Means for connecting voice communication with the caller terminal connected to the call and voice communication with the destination of the destination number when the destination of the destination number responds, and the destination number Can be configured as an agency terminal, which is a number that cannot be used for outgoing calls by the sender terminal.

  According to the present invention, it is possible to connect to a specific number regardless of whether the VoIP communication terminal can make a call to the PSTN.

It is a system configuration figure concerning an embodiment of the invention. It is a figure for demonstrating the operation example of the system in a positional information acquisition phase. It is a figure which shows an example of the agency terminal list stored in a positional information database. It is a figure for demonstrating the operation example of the system in a transmission request | requirement phase. It is a figure for demonstrating the operation example of the system in an agency phase. It is a figure for demonstrating the operation example of the system at the time of call abnormal disconnection.

  Embodiments of the present invention will be described below with reference to the drawings. The embodiment described below is only an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

(System configuration)
FIG. 1 shows an overall configuration diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 1, the communication system according to the present embodiment has a configuration in which a VoIP communication terminal 10, an agency terminal 20, and a control device (server) 30 are connected to each other via a communication network (such as the Internet). FIG. 1 also shows a target contact 40 in which a telephone 41, which is a destination to which the user of the VoIP communication terminal 10 finally makes a call, exists.

  In the present embodiment, the target contact 40 is a contact that receives a call when a specific number such as 119 is dialed using a telephone connected to a general telephone network such as a PSTN or a 3G mobile phone network (example: : Fire department). Here, the telephone network is provided with a function of receiving a call to a target contact located near the telephone of the specific number.

  That is, the intended contact information of a specific number such as 119 is generally distributed in a plurality of regions, and when a specific number such as 119 is applied using a telephone connected to a general telephone network, a plurality of Among the target contacts, the call is received at the target contact close to the position where the caller telephone is located.

  The VoIP communication terminal 10 is a terminal that can perform a voice call by an IP phone application, and is, for example, a smartphone, a tablet terminal, a small PC, or the like. As shown in FIG. 1, the VoIP communication terminal 10 includes a location information acquisition management / transmission / reception unit 11, an information storage unit 12, an IP communication unit 13, and an IP telephone unit 14. The operation of each functional unit will be described in detail later in the explanation of the operation.

  Here, in the VoIP communication terminal 10, voice communication by IP telephone can be performed by the IP telephone section 14, but the IP telephone section 14 in the present embodiment is realized by an IP telephone application, and 119 It is assumed that it is impossible to make a call to a specific number (target contact) such as a phone number.

  The agency terminal 20 can be connected to the VoIP communication terminal 10 via an IP telephone via a network such as the Internet, and can be connected to the telephone 41 of the target contact 40 via a general telephone network such as PSTN. Yes, it has a two-party call connection function for connecting calls related to these call connections.

  As shown in FIG. 1, the agency terminal 20 includes a location information acquisition management / transmission / reception unit 21, an information storage unit 22, an IP communication unit 23, an IP phone unit 24, a two-party call connection unit 25, and a general call unit 26. The operation of each functional unit will be described in detail later in the explanation of the operation. Here, it is assumed that the IP telephone unit 24 is realized by an IP telephone application similar to the IP telephone unit 14 in the VoIP communication terminal 10, but if it can be connected to the VoIP communication terminal 10 by IP, It doesn't have to be a phone. The IP communication unit 23 can perform data communication with the IP communication unit 13 of the VoIP communication terminal 10 and controls the IP telephone unit 24. The general communication unit 26 is a functional unit capable of performing telephone communication via a PSTN network (fixed telephone network), a cellular phone network, or the like, and is a functional unit capable of making a call using the specific number and receiving a call to the specific number. It is.

  The agency terminal 20 may be realized as a single device or a plurality of devices. In the case of realizing with a plurality of units, for example, a device including a location information acquisition management / transmission / reception unit 21, an information storage unit 22, an IP communication unit 23, an IP phone unit 24, and a two-party call connection unit 25, and a general call unit 26 A configuration can be adopted in which a corresponding general telephone is connected by wire or wirelessly. In the case where it is realized by one unit, a configuration in which a PSTN communication card, an ISDN communication card, and the like are provided as the general call unit 26 in a VoIP communication terminal capable of IP phone calls.

  The control device 30 registers the position information and the like notified from the agency terminal 20 and returns the agency destination ID to the VoIP communication terminal 10 when receiving an inquiry of the agency destination ID from the VoIP communication terminal 10. It is a device that has. As shown in FIG. 1, the control device 30 includes a location information management / inquiry unit 31 and a location information database 32 (data storage unit). The operation of each functional unit and the contents of the database will be described in detail later in the explanation of the operation.

  Each of the above devices 10, 20, and 30 has, for example, a program describing the processing contents described in this embodiment on a computer having an IP communication function (in the case of the agency terminal 26, further having a general telephone communication function). This can be realized by executing. That is, the functions of each unit of the device are executed by executing a program corresponding to the processing executed in each unit using hardware resources such as a CPU, a memory, and a hard disk built in the computer constituting the device. It is possible to realize. The above-mentioned program can be recorded on a computer-readable recording medium (portable memory or the like), stored, or distributed. It is also possible to provide the program through a network such as the Internet or electronic mail. Note that the two-party call connection unit 25 in the agency terminal 20 can be realized by a program as described above, or can be configured to connect input / output of audio signals to each other using hardware.

(System operation)
Hereinafter, the operation of the system according to the present embodiment will be described in detail with reference to the drawings. The operation of the system in the present embodiment basically includes a location information acquisition phase, a transmission request phase, and an agency phase.

<1. Location information acquisition phase>
An example of the operation of the system in the position information acquisition phase will be described with reference to FIG. Step numbers appearing in the following description correspond to step numbers (S numbers) in FIG. The same applies to diagrams showing other operation examples.

  Step 11) The location information acquisition management / transmission / reception unit 11 in the VoIP communication terminal 10 acquires its location information and stores it in the information storage unit 12. For location information acquisition, for example, GPS, WiFi radio waves, VICS (registered trademark) used for car navigation, optical beacons, IC chips embedded in power poles implemented in some areas, etc. Can be used. The present invention is not limited to the method of acquiring specific position information, and the position information may be acquired by a method other than the above. In the present embodiment, it is assumed that longitude / latitude information is acquired as position information.

  Step 12) The location information acquisition management / transmission / reception unit 21 in the agency terminal 20 acquires its own location information and stores it in the information storage unit 22. As in the case of the VoIP communication terminal 10, the acquisition of position information is performed in, for example, GPS, WiFi radio waves, VICS (registered trademark) used for car navigation, optical beacons, and some areas. An IC chip embedded in a current pole can be used. The present invention is not limited to the method of acquiring specific position information, and the position information may be acquired by a method other than the above. In the present embodiment, it is assumed that longitude / latitude information is acquired as position information.

  Note that either step 11 or step 12 may be earlier in time.

  Step 13) The location information acquisition management / transmission / reception unit 21 of the agency terminal 20 transmits the registration information to the control device 30. The registration information includes the location information acquired in step 12, the IP phone type that can be used by the agency terminal 20, the identification ID of the IP phone unit 24 of the agency terminal 20, the availability status, and the general call unit 26 used at the time of agency execution. Includes a phone number.

  The IP phone type is, for example, the name of an IP phone application or IP phone service. The identification ID of the IP telephone unit 24 is an ID (referred to as an agency destination ID) used when a call is made from an originator (VoIP communication terminal 10) to the agency terminal 20 using an IP phone, for example, a 050 number, User ID and the like. The availability state is information (OK, NG, etc.) indicating whether or not the agency terminal 20 is in a state where agency is possible, and is information that is sequentially updated. For example, it is OK before the start of brokerage, NG during the brokerage, and OK after the brokerage ends. Such state update is performed, for example, when the two-party call connection unit 25 that monitors the call connection related to the broker sends a relay start signal (NG) to the control device 30 at the time of the broker start (two-party call connection start). This is carried out by transmitting an agent end signal (OK) to the control device 30 at the time of agent end (call end detection).

  The registration information transmitted from the agency terminal 20 is received by the location information management / inquiry unit 31 in the control device 30.

  Step 14) The location information management / inquiry unit 31 in the control device 30 stores the received registration information in the location information database 32. The location information database 32 stores registration information from a plurality of agency terminals as an agency terminal list.

  An example of an agency terminal list stored in the location information database 32 is shown in FIG. As shown in FIG. 3, the registration information described above is stored for each broker terminal ID paid out on the control device side.

  When the agency terminal 20 is fixedly installed, it is not always necessary for the agency terminal 20 to acquire location information by itself and send registration information to the control device 30 as described above. For example, the user of the agency terminal 20 accesses the controller 30 using another terminal and does not include the registration information in the agency terminal 20 without the location information acquisition function and the notification function of the registration information to the controller. You may make it register by inputting into a terminal and sending registration information to the control apparatus 30 from the said terminal.

<2. Outgoing request phase>
Next, the call request phase will be described with reference to FIG.

  Step 21) In order for the calling user to make a call, a destination number is input to the VoIP communication terminal 10 and a call operation is performed. Here, in the present embodiment, the IP communication unit 13 displays a screen for performing telephone number input and outgoing call operation. In addition, the IP communication unit 13 is configured to control the IP telephone unit 14, and notifies the IP telephone unit 14 of the destination ID to make a call to the destination telephone ID. It has functions such as

  Step 22) The IP communication unit 13 of the VoIP communication terminal 10 stores a list of specific numbers (for example, 119) in storage means such as a memory, and the destination inputted in Step 21 by collating with the list. Determine whether the number is a specific number. In this example, the specific number is assumed. In this case, the IP communication unit 13 requests the location information acquisition management / transmission / reception unit 11 to acquire the appropriate destination ID of the agency terminal (close to the transmission source in this example) from the control device 30. As described above, the agency destination ID is an ID that is used as a destination when a call connection is made to the agency terminal via an IP telephone, such as a telephone number (for example, 050 number), a user ID, and the like.

  If the destination number is not a specific number, the IP communication unit 13 notifies the IP telephone unit 14 of the destination number as it is and makes a call connection to the destination number.

  When the destination contact 40 includes a server that receives and displays information from various terminals via the Internet or the like, the IP communication unit 13 of the VoIP communication terminal 10 specifies the address information of the server. If the destination number is a specific number, it is stored in advance in association with the number, and when the destination number is a specific number, the sender information (source ID, location information) is sent to the address corresponding to the specific number (to the server) Etc.) may be sent. In addition, the address information of the target contact 40 may be obtained by inquiring of the server storing the server address information as described above, and the source information may be transmitted using the acquired address information. .

  Step 23) The location information acquisition management / transmission / reception unit 11 that has received the above request transmits an agency destination ID request to the location information management / inquiry unit 31 of the control device 30. The agency destination ID request includes the location information acquired in the location information acquisition phase, the destination number (that is, the specific number), the caller ID, and the IP phone type. The source ID and the IP phone type are stored in advance in the information storage unit 12, for example, and the location information acquisition management / transmission / reception unit 11 acquires these information by referring to the information storage unit 12.

  In order to request the agency destination ID, it is not always necessary to include the transmission source ID in the agency destination ID request. However, in this embodiment, as will be described later, including the sender ID, the sender ID is used as the target contact address so that the sender can be contacted when the call related to the agency is disconnected. 40 can be notified. The sender ID is stored in the position information database 32 in association with the agency terminal 20 selected as described below.

  Steps 24 and 25) The location information management / inquiry unit 31 of the control device 30 that has received the agency destination ID request queries the agency terminal list in the location information database 32 based on the location information and IP phone type included in the agency destination ID request. Then, the ID (050 number, user ID, etc.) of the agency terminal that satisfies the following conditions (1) to (3) is acquired.

(1) Status (whether call to destination number is possible) = OK
(2) IP phone type = type capable of making a call with the caller (3) close location With respect to the above (2), for example, the control device 30 holds information on a combination of IP phone types that can be used for IP phone calls Judgment is made by referring to the information. “The position is close” in (3) may be, for example, that the distance calculated by the straight line distance is the shortest, and if the destination number is 119, it may be within the same fire department jurisdiction as the source, If the number is 0120, it may be in the same prefecture as the sender.

  When using the same conditions within the jurisdiction of the fire department in (3), if multiple agent terminals satisfying conditions (1) to (3) are detected, the distance calculated by the straight line distance is the most. You can select the closest one.

  In addition, regarding the condition (3), the area and the 0AJ number band of the area are specified from the location information of the VoIP communication terminal 10 (eg, Tokyo 03xxx etc.), and the registered telephone number of the agency terminal list It is good also as extracting what matches 0AJ number belt from.

  Step 26) The location information management / inquiry unit 31 of the control device 30 returns the agency destination ID acquired as described above to the location information acquisition management / transmission / reception unit 11 of the VoIP communication terminal 10.

  Step 27) The location information acquisition management / transmission / reception unit 11 of the VoIP communication terminal 10 that has received the agency destination ID passes the agency destination ID to the IP communication unit 13.

  Step 28) The IP communication unit 13 that has received the agency destination ID makes a call to the agency destination ID using the IP telephone unit 14 under its control.

  Step 29) A VoIP communication call is established between the IP telephone unit 14 under the control of the IP communication unit 13 of the VoIP communication terminal 10 and the IP telephone unit 24 under the control of the IP communication unit 23 of the agency terminal 20, Calls can be made between the two parties.

  In the above example, the control device 30 selects one agency terminal and notifies the VoIP communication terminal 10 of the agency destination ID. However, a plurality of agency terminals are selected and a plurality of agency destination IDs are set to VoIP. The communication terminal 10 may be notified. In this case, for example, the VoIP communication terminal 10 holds a plurality of received relay destination IDs in the information storage unit 12, and when relaying to a certain relay destination ID fails, or to a certain relay destination ID When an unexpected call disconnection occurs during the agency call, the IP communication unit 13 automatically acquires another agency destination ID from the information storage unit 12, and uses this to make a call again.

  Further, not only the agency destination ID is sent to the VoIP communication terminal 10, but also information indicating that an agency request is entered for the agency terminal 20 and sender information (sender ID, sender location information, etc.) The destination number or the like may be notified from the control device 30. When the destination number is sent from the control device 30 to the agency terminal 20, it is not necessary to send the destination number from the VoIP communication terminal 10 to the agency terminal 20 in step 31 described later.

<3. Intermediary Phase>
Next, the agency phase will be described with reference to FIG.

  Step 31) When the IP communication unit 23 of the agency terminal 20 detects that the VoIP communication call is established with the VoIP communication terminal 10 by the IP telephone unit 24 under its control, the IP communication unit of the IP communication terminal 10 13 newly establishes a data communication connection using HTTP or the like, and acquires the destination number of the destination (target contact) that the caller (user) desires to call from the IP communication unit 13 of the VoIP communication terminal 10. . More specifically, for example, the IP communication unit 23 of the agency terminal 20 transmits an information request to the IP communication unit 13 of the VoIP communication terminal 10, and the IP communication unit 13 of the VoIP communication terminal 10 responds to the information request. Returns information such as the destination number.

  Note that as the information acquired by the agency terminal 20 in step 31, not only the destination number but also the location information of the VoIP communication terminal 10 and the ID of the IP telephone unit 14 may be acquired together. Further, instead of the information being acquired by the agency terminal 20 in step 31, when the VoIP communication terminal 10 makes a call in step 28 in FIG. 4, in the call signal (eg, INVITE), or The destination number or the like may be notified to the secondary terminal 20 in a form added to the call signal.

  In addition, the IP communication unit 23 may identify that the call received by the IP telephone unit 24 is a call from a specific application, and perform an agency when the call is from a specific application. Good. Whether the call originates from a specific application can be identified from, for example, information included in the call signal.

  Step 32) The destination number acquired by the IP communication unit 23 of the agency terminal 20 is passed to the two-party call connection unit 25.

  Step 33) The two-party call connection unit 25 that has received the destination number is a communication device (for example, PSTN communication device, ISDN communication device) that is mounted on the general call unit 26 under its control and can communicate via the general telephone network. 3G / LTE mobile communication device) makes a call to the destination number and establishes a general telephone call. At this point, a voice call can be made between the communication device and the destination telephone 41.

  As an example, when the destination number is 119, by calling 119, the system of the communication company that provides the telephone network automatically arrives at the optimal fire station (jurisdiction fire station) considering the location, etc. You can make calls with the fire department staff.

  Note that, by controlling the two-party call connection unit 25, guidance may be transmitted when the target contact 40 responds, and the target contact 40 may select whether to receive or return. When receiving a call, a call connection is made. In the case of turning back, for example, information of a sender is transmitted. The selection here may be performed, for example, by pressing a push button on the telephone 41 in the target contact 40.

  Step 34) When the two-way call connection unit 25 detects that the call of the general telephone is established with the destination of the destination number by the general call unit 26 under the control, the two-way call connection unit 25 performs the call request phase shown in FIG. Call voice input / output of IP telephone communication of the VoIP communication terminal 10 established in step 29 is connected to call voice input / output of a general telephone call with a destination number.

  As a result, a call can be made between a caller (user) using an IP phone and a target contact that is a destination of a destination number using a general phone.

  It should be noted that immediately after the establishment of a VoIP communication call between the agent terminal 20 and the VoIP communication terminal 10 at the first time of step 31, the call of the caller is put on hold and the connection between the two parties is completed. May be canceled so that a voice call can be made from the caller.

  Further, immediately after the establishment of a VoIP communication call between the agent terminal 20 and the VoIP communication terminal 10 at the first time of step 31, instead of putting the call on hold, guidance or the like is provided by the function of the two-party call connection unit 25. By sending it, let the caller speak what you want to convey to the target contact 40, record the content, call the target contact 40 after the recording is completed, and stream the recorded content when the call is connected It is good. Further, the recorded file may be transferred to the target contact 40 instead of the call connection.

  In addition, when the call between the general call unit 26 of the agency terminal 20 and the target contact 40 in the above step 33 is started (immediately after the call connection is completed), the two-party call connection unit 25, for example, “This phone is A message such as “Taking a call from ○○ and then making a call” may be transmitted to the telephone 41 of the target contact 40 by a synthesized voice. The information transmitted to the target contact 40 at this time is, for example, the IP phone type (application name) of the VoIP communication terminal 10 and the IP phone ID (ID that is the destination of the IP phone). As a result, when the communication between the VoIP communication terminal 10 and the target contact 40 is disconnected due to an abnormality occurring at any point between the VoIP communication terminal 10 and the target contact 40 during the brokerage. In this case, the target contact 40 becomes a clue to reconnect to the VoIP communication terminal 10. That is, for example, if there is a terminal capable of IP telephone communication at the target contact 40, reconnection to the VoIP communication terminal 10 can be performed.

  If there is no terminal capable of IP phone communication corresponding to the IP phone type of the caller, for example, a call is made from the target contact 40 to the administrator of the control device 30, the caller ID is transmitted, and the administrator or the like It is possible to take measures such as transmitting another agency destination ID from the control device 30 to the VoIP communication terminal 10.

  In addition, even if the caller ID is not known in the target contact 40, if the telephone number of the agency terminal 20 is known by the caller ID notification or the like, the number is transmitted to the administrator of the control device 30, and the control device 30 With the administrator's intervention, the originator ID associated with the telephone number of the agency terminal 20 in the location information database 32 can be extracted. Then, in the same manner as described above, it is possible to take measures such as transmitting another agency destination ID from the control device 30 to the VoIP communication terminal 10.

  In addition, when the call connection between the VoIP communication terminal 10 and the agency terminal 20 is unexpectedly disconnected, the following processing may be performed.

  In this case, at the stage where the call connection between the VoIP communication terminal 10 and the agency terminal 20 is disconnected, first, the agency terminal 20 automatically sends it to the VoIP communication terminal 10 from the agency terminal 20 by a user operation of the agency terminal 20. Try to resume the call by placing a call. If the call cannot be resumed even if it is attempted to resume the call for a certain period of time, the two-party call connection unit 25 or the like of the VoIP communication terminal 10 uses the synthesized voice to send the source information to the destination contact 40. Continue to tell the phone 41. The information conveyed here includes “the location of the emergency caller is longitude XX / latitude XX, the app used for the call is △△ and the ID is XX”.

  In addition, in the system according to the present embodiment, with regard to location information of the sender information, when dedicated equipment is sequentially introduced in the future to the intended contact (assuming a fire department here) in the future It may be stored in a format (eg, XML format, specifically, VoIP Location Protocol) that can be used in the dedicated equipment in the agency terminal 20.

  In addition to the method described above, re-repositioning at the time of abnormal disconnection may be automatically performed as follows.

<4. Example of processing in case the call between the caller and the target contact is disconnected>
A processing example in preparation for a case where the call between the transmission source and the destination contact is disconnected will be described with reference to FIG.

  The two-party call connection unit 25 in the agency terminal 20 updates the state (NG / OK) in the agency terminal list of the control device 30 by notifying the control device 30 of the start / end of the agency by the agency terminal 20. In addition to this, the two-way call connection unit 25 periodically transmits a notification indicating that the agent is in the middle of processing (after completion of step 34 shown in FIG. 5) to the control device 30. (Step 41). For example, the two-party call connection unit 25 has a function of detecting an input / output voice signal, and detects a voice signal without detecting a predetermined time without detecting the end of a call. It is determined that the agency is in process, and an intermediary notification is transmitted to the control device 30. The intermediary notification includes, for example, information for identifying the self intermediary terminal 20, state = NG (indicating intermediary), and a sender ID.

  The position information management / inquiry unit 31 of the control device 30 determines that the call between the caller and the target contact is abnormally disconnected when the end of notification is not received for a predetermined time without receiving the end notification. (Step 42). Alternatively, the two-party call connection unit 25 may detect an abnormal disconnection and notify the control device 30 of it. Whether or not the disconnection is abnormal can be determined, for example, by looking at a parameter (for example, a disconnection reason field) in the VoIP signal, but the determination method is not limited to this.

  The location information management / inquiry unit 31 of the control device 30 that has detected an abnormality (or has received a notification of the abnormality) notifies the caller of the abnormal disconnection by IP phone using the caller ID by means of synthesized voice or the like. At the same time, another agency terminal is searched and the agency destination ID of the agency terminal is notified (step 43). Further, the notification of the relay destination ID is performed to the IP communication unit 13 of the VoIP communication terminal 10 so that the VoIP communication terminal 10 automatically makes an IP phone call to the new relay terminal. Also good.

(Other application examples, effects, etc.)
In the present embodiment, based on the position information of the VoIP communication terminal, a specific number callable relay terminal located at a position close to the VoIP communication terminal is extracted, and a system for transmitting to the specific number via the relay terminal is described. This enables connection to a specific number regardless of whether the VoIP communication terminal can make a call to the PSTN.

  In the present embodiment, an emergency call using 110 or 119 as a specific number is assumed, but the application destination of the technique of the present embodiment is not limited to this. For example, the technology according to the present embodiment can also be used for agency connection to a number that determines a connection destination based on position information, such as free dial, as a specific number.

  According to the technology according to the present embodiment, for example, an IP phone application (mobile IP phone) in which a user who uses a communication service for smartphones of “data communication without voice call service only” can use a 050 number, a user name, and the like. Can also be used to make emergency calls from the smartphone.

  Further, even when a telephone network (a fixed telephone network, a mobile phone network, etc.) is not available and only a data communication network can be used, an emergency call or the like can be made with a mobile IP phone operating on the data communication network.

  In addition, even in the case of an emergency call from a user (congestion / congestion) in an environment (congestion / congestion) where synchronous communication (call / real-time communication with a communication partner) using a general communication network cannot be performed, Therefore, emergency avoidance emergency calls can be made by asynchronous communication (call / delayed communication with a communication partner).

  In addition, since an ordinary telephone or a mobile phone that can be transmitted to a specific number is used as an agency terminal, the service provider can be realized without having facilities that can be connected to each area.

  In addition, since an application that accepts VoIP communication is placed as the agency terminal, even if the originating terminal does not have a VoIP identification number that can be sent to the PSTN, a call is made to a specific number via the agency terminal. It becomes possible.

  The present invention is not limited to the above-described embodiments, and various modifications and applications are possible within the scope of the claims.

10 VoIP communication terminal 11 location information acquisition management / transmission / reception unit 12 information storage unit 13 IP communication unit 14 IP telephone unit 20 agency terminal 21 location information acquisition management / transmission / reception unit 22 information storage unit 23 IP communication unit 24 IP phone unit 25 Call connection unit 26 General call unit 30 Control device 31 Location information management / inquiry unit 32 Location information database 40 Target contact 41 Telephone

Claims (12)

A communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
The caller terminal is
Means for determining whether or not the input destination number matches a predetermined specific number;
Means for notifying the control device of the destination number and the location information of the caller terminal when the destination number matches the specific number;
Receiving the identification information of the agency terminal from the control device, and making a call to the agency terminal using the identification information,
The control device includes:
Storage means for storing identification information and location information for a plurality of agency terminals;
Means for comparing the position information received from the caller terminal with the position information stored in the storage means and obtaining identification information of the agency terminal corresponding to the position information indicating a position close to the position of the caller terminal; ,
Means for notifying the caller terminal of the acquired identification information of the agency terminal,
The agency terminal is
Means for making a call connection with the caller terminal by a call from the caller terminal;
Means for receiving the destination number from the caller terminal or the control device and making a call to the destination number;
Means for connecting voice communication with the caller terminal connected to the call and voice communication with the destination of the destination number when the destination of the destination number responds, Communication system.   The communication system according to claim 1, wherein the destination number that matches the specific number is a number that cannot be used for transmission by the caller terminal. The caller terminal or the control device notifies the agency terminal of information on the caller terminal,
The said agent terminal notifies the information of the said sender | caller terminal to the destination of the said destination number, when the call between the said sender | caller terminals disconnects abnormally, The destination of the said destination number is characterized by the above-mentioned. Communications system. The control device includes means for detecting an abnormal disconnection of communication between the caller terminal and the destination of the destination number based on a notification from the agency terminal,
The communication system according to claim 1 or 2, wherein when the abnormal disconnection is detected, the caller terminal is notified of identification information of a new agent terminal. A communication method in a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
The caller terminal determines whether or not the input destination number matches a predetermined specific number;
The caller terminal, when the destination number matches the specific number, notifying the control device of the destination number and the location information of the caller terminal;
The control device compares the position information stored in storage means for storing identification information and position information about a plurality of agency terminals with the position information received from the caller terminal, and Obtaining identification information of an agency terminal corresponding to position information indicating a position close to the position, and notifying the sender terminal of the identification information;
The caller terminal receives the identification information of the agency terminal from the control device, and calls the agency terminal using the identification information;
The agent terminal makes a call connection with the caller terminal by a call from the caller terminal;
The agent terminal calling the destination number received from the caller terminal or the control device;
Connecting the voice communication with the caller terminal connected to the call and the voice communication with the destination of the destination number when the destination terminal responds to the destination of the destination number;
A communication method comprising: The communication terminal in a communication system including a communication terminal and a control device connected to a communication network,
Means for determining whether or not the input destination number matches a predetermined specific number;
A communication terminal comprising: means for notifying the control device of the destination number and the location information of the communication terminal when the destination number matches the specific number. The communication terminal further comprises means for receiving identification information of the agency terminal from the control device and calling the agency terminal using the identification information,
The agent terminal makes a call connection with the communication terminal, makes a call to the destination number, makes a call connection with the destination of the destination number, and performs voice communication between the destination and the communication terminal The communication terminal according to claim 6, wherein:   The program for functioning a computer as each means in the communication terminal of Claim 6 or 7. The control device in a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
Storage means for storing identification information and location information for a plurality of agency terminals;
Means for comparing the position information received from the caller terminal with the position information stored in the storage means and obtaining identification information of the agency terminal corresponding to the position information indicating a position close to the position of the caller terminal; ,
Means for notifying the sender terminal of the acquired identification information of the agency terminal;
A control device comprising:   The program for functioning a computer as each means in the control apparatus of Claim 9. The agency terminal in a communication system having a caller terminal, a control device, and an agency terminal connected to a communication network,
Means for making a call connection with the caller terminal by a call from the caller terminal;
Means for receiving a destination number from the caller terminal or the control device and causing a communication unit having a function of communicating with a destination of the destination number to make a call to the destination number;
Means for connecting voice communication with the caller terminal connected to the call and voice communication with the destination of the destination number when the destination of the destination number responds,
The agency terminal, wherein the destination number is a number that cannot be used for outgoing calls by the sender terminal.   The program for functioning a computer as each means in the agency terminal of Claim 11.

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