JP2016219947A - Communication processing system, communication processing method, communication processing program, portable terminal device, control method therefor and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement a high-quality and inexpensive telephone conversation between terminal devices that are connected inside and outside of a closed network without making a large investment.SOLUTION: Private addresses and extension numbers that are imparted to at least two terminal devices are held in association with connection information indicating whether the terminal devices are connected inside or outside of the closed network. A call origination from a first terminal device to a second terminal device including a first private address of the first terminal device and a second extension number of the second terminal device is transferred to the second terminal device that is connected inside or outside of the closed network and has a second private address corresponding to the second extension number. A terminated call response to the call origination by the second terminal device, including the second private address of the second terminal device and the first private address is transferred to the first terminal device that is connected inside or outside of the closed network. In the case where the first terminal device receives the terminated call response, a telephone conversation between the first terminal device and the second terminal device is set up using the first private address and the second private address.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a communication processing system, a communication processing method, a communication processing program, a communication processing device, a portable terminal device, and a control method and control program thereof.

  In the above technical field, Patent Document 1 discloses communication between a device connected to a local network and a device connected to the Internet by associating a private IP address with a public IP address by NAT (Network Address Translation). Techniques for performing are disclosed.

JP 2010-081600 A

  However, if the technology described in the above document is used to make a call between terminal devices connected to the inside and outside of the closed network, a large investment such as introduction of NAT is required, and the Internet Therefore, it was impossible to realize a high-quality and inexpensive call.

  The objective of this invention is providing the technique which solves the above-mentioned subject.

In order to achieve the above object, a communication processing system according to the present invention provides:
A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network Related information holding means for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, Call transmission means connected to the inside or outside of the closed network indicated by connection information and transmitting to the second terminal device having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission means for transmitting to the first terminal device connected to the inside or outside of the network;
With
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. Is done.

In order to achieve the above object, a communication processing method according to the present invention includes:
A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network A related information holding step for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, A call transmission step of transmitting to the second terminal device connected to the inside or outside of the closed network indicated by connection information and having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission step of transmitting to the first terminal device connected to the inside or outside of the network;
Including
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. Is done.

In order to achieve the above object, a communication processing program according to the present invention provides:
A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network A related information holding step for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, A call transmission step of transmitting to the second terminal device connected to the inside or outside of the closed network indicated by connection information and having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission step of transmitting to the first terminal device connected to the inside or outside of the network;
A communication processing program for causing a computer to execute
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. Is done.

In order to achieve the above object, a mobile terminal device according to the present invention includes:
A first request means for reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
Second request means for requesting the private network to give an extension number and a private address;
Holding means for receiving and holding the extension number and the private address from the private network;
A call processing means for transmitting a call message, including at least the extension number of the call destination and the private address of the call source;
First address acquisition means for acquiring a private address of the call destination included in an incoming call response message from the call destination;
Second address acquisition means for acquiring the private address of the caller included in the incoming call message;
An incoming call processing means for transmitting an incoming call response message including at least a private address of a caller and a callee;
An extension call means for sending and receiving call messages using each other's private address;
Is provided.

In order to achieve the above object, a method for controlling a mobile terminal device according to the present invention includes:
A first request step of reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
A second requesting step for requesting the private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A call processing step for transmitting a call message, including at least a callee extension number and a caller private address;
A first address acquisition step of acquiring a private address of the call destination included in an incoming call response message from the call destination;
A second address acquisition step of acquiring a private address of the caller included in the incoming call message;
An incoming call processing step of sending an incoming call response message including at least the caller and callee private addresses;
An extension call step for sending and receiving call messages using each other's private address;
including.

In order to achieve the above object, a control program for a mobile terminal device according to the present invention includes:
A first request step of reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
A second requesting step for requesting the private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A call processing step for transmitting a call message, including at least a callee extension number and a caller private address;
A first address acquisition step of acquiring a private address of the call destination included in an incoming call response message from the call destination;
A second address acquisition step of acquiring a private address of the caller included in the incoming call message;
An incoming call processing step of sending an incoming call response message including at least the caller and callee private addresses;
An extension call step for sending and receiving call messages using each other's private address;
Is executed on the computer.

In order to achieve the above object, a communication processing program according to the present invention provides:
A request step for requesting a private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A calling step for performing a calling process to a terminal device of a call destination;
An incoming call step for performing an incoming call process from the terminal device of the call destination;
A call step for making a call with a terminal device of a call destination;
A communication processing program for causing a computer to execute
The calling step includes
Transmitting a call message including at least the extension of the callee and the private address of the caller;
Obtaining the private address of the call destination included in an incoming call response message from the call destination;
Including
The incoming call step includes:
Obtaining the private address of the caller included in an incoming call message;
Transmitting an incoming call response message including at least the private address of the caller and the callee;
Including
In the calling step, a call message is transmitted and received using the private addresses of the caller and the callee.

  According to the present invention, it is possible to realize a high-quality and inexpensive call between terminal devices connected to the inside and the outside of a closed network without making a large investment.

It is a block diagram which shows the structure of the communication processing system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the structure of the communication processing system which concerns on 2nd Embodiment of this invention. It is a figure which shows the operation procedure of the extension call by the smart phone as a portable terminal device in the communication processing system which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the structure of the communication processing system which concerns on a premise technique. It is a sequence diagram which shows the operation | movement procedure of the terminal registration in the communication processing system which concerns on 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call from the smart phone in the communication processing system which concerns on 2nd Embodiment of this invention to an IP telephone. It is a figure which shows the stack structure at the time of the call from the smart phone in the communication processing system which concerns on 2nd Embodiment of this invention to an IP telephone. It is a sequence diagram which shows the operation | movement procedure of the call from the IP telephone to a smart phone in the communication processing system which concerns on 2nd Embodiment of this invention. It is a figure which shows the stack structure at the time of the call from an IP telephone to a smart phone in the communication processing system which concerns on 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call to the 2nd smart phone from the 1st smart phone in the communication processing system which concerns on 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call from the smart phone in the communication processing system which concerns on 2nd Embodiment of this invention to an external line telephone. It is a block diagram which shows the function structure of the MVNO server which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the connection terminal registration database of the MVNO server which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the function structure of the intranet server which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the connection terminal registration database of the intranet server which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the function structure of the SIP server which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the connection terminal registration database of the SIP server which concerns on 2nd Embodiment of this invention. It is a figure which shows the other structure of the connection terminal registration database of the SIP server which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the function structure of the external line GW which concerns on 2nd Embodiment of this invention. It is a figure which shows the structure of the connecting terminal registration database of the external line GW which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the function structure of the smart phone as a portable terminal device which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the hardware constitutions of the server which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the MVNO server which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the intranet server which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the SIP server which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the hardware constitutions of the smart phone as a portable terminal device which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the smart phone as a portable terminal device which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the process sequence of the extension application which concerns on 2nd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the terminal registration in the communication processing system which concerns on 3rd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call from the smart phone in the communication processing system which concerns on 3rd Embodiment of this invention to an IP telephone. It is a figure which shows the stack structure at the time of the call from the smart phone in the communication processing system which concerns on 3rd Embodiment of this invention to an IP telephone. It is a sequence diagram which shows the operation | movement procedure of the call from an IP telephone to a smart phone in the communication processing system which concerns on 3rd Embodiment of this invention. It is a figure which shows the stack structure at the time of the call from an IP telephone to a smart phone in the communication processing system which concerns on 3rd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call to the 2nd smart phone from the 1st smart phone in the communication processing system which concerns on 3rd Embodiment of this invention. It is a sequence diagram which shows the operation | movement procedure of the call from the smart phone in the communication processing system which concerns on 3rd Embodiment of this invention to an external line telephone. It is a figure which shows the structure of the connection terminal registration database of the MVNO server which concerns on 3rd Embodiment of this invention. It is a figure which shows the structure of the connection terminal registration database of the SIP server which concerns on 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement procedure of the MVNO server which concerns on 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement procedure of the SIP server which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the structure of the communication processing system which concerns on 4th Embodiment of this invention. It is a block diagram which shows the structure of the cloud server by VNF which concerns on 4th Embodiment of this invention. It is a block diagram which shows the structure of the communication processing system which concerns on 5th Embodiment of this invention.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the constituent elements described in the following embodiments are merely examples, and are not intended to limit the technical scope of the present invention only to them.

  Hereinafter, the term “extension call” used in the embodiment indicates that a call is made using a mutual private address. The term “closed network” is a “closed” network that is constructed as a private service by companies and the like for an open network that anyone can use, such as the Internet. That is, “closed” in a closed network means that it is not directly accessed from the Internet. For example, a closed network is constructed by connection of an intranet, a LAN (Local Area Network), an AP (Access Point) or the like, and in the case of being connected by the Internet, it is tunneled and separated. The “inside of the closed network” indicates a case where it is directly connected to the intranet, LAN, AP or the like constituting the “closed network” and is normally under the management. “Outside the closed network” indicates a case where the network is not directly connected to an intranet, a LAN, an AP, or the like constituting the “closed network” and is not under management during communication.

[First Embodiment]
A communication processing system 100 as a first embodiment of the present invention will be described with reference to FIG. The communication processing system 100 is a system that realizes a call between terminal devices inside and outside a closed network.

  As shown in FIG. 1, the communication processing system 100 includes a related information holding unit 101, a call transmission unit 102, and an incoming call transmission unit 103. The related information holding unit 101 displays the private address 121 and the extension number 122 assigned to each of the at least two terminal devices (110, 120,...) And the at least two terminal devices (110, 120,...). It is stored in association with connection information 123 indicating whether it is connected inside the closed network or outside the closed network. The call transmission unit 102 includes a first private address of the first terminal device 110 and a second extension number of the second terminal device 120 among at least two terminal devices (110, 120,...). A call from the device 110 to the second terminal device 120 is transmitted to the second terminal device 120 connected to the inside or outside of the closed network indicated by the connection information 123 and having the second private address corresponding to the second extension number. . The incoming call transmission unit 103 sends an incoming call response to the outgoing call by the second terminal device 120, including the second private address of the second terminal device 120 and the first private address of the first terminal device 110, as connection information. It is transmitted to the first terminal device 110 connected to the inside or outside of the closed network indicated by 123. Then, when the first terminal apparatus receives the incoming call response, the communication processing system 100 uses the first private address and the second private address, and the first terminal apparatus 110, the second terminal apparatus 120, A call between is established.

  According to the present embodiment, since a call is performed using a unified private address, a terminal device connected to the inside and outside of the closed network without making a large investment such as SIP (Session Initiation Protocol) -NAT service. High-quality and inexpensive calls can be realized.

[Second Embodiment]
Next, a communication processing system according to the second embodiment of the present invention will be described. In the communication processing system according to the present embodiment, an intranet that is a closed network is directly connected to a private network of an MNO (Mobile Network Operator: Mobile Network Operator) or MVNO (Virtual Mobile Network Operator: Mobile Virtual Network Operator). Connect a common extension number and private IP address to an IP phone connected to the inside of the closed network and a mobile terminal device such as a smartphone or tablet connected to the inside of the closed network via the MNO or MVNO. Give. Using such a common extension number and private IP address, a large-scale investment is made between an IP phone or the like and a mobile terminal device such as a smartphone or a tablet connected to the inside of the closed network via MNO or MVNO. Realize high-quality extension calls without having to. The “private IP address” used in the following embodiments is an example of the “private address” described in the first embodiment.

《Prerequisite technology》
Before describing the communication processing system according to the present embodiment, the premise technology in the same technical field will be described in order to clarify the features of the communication processing system according to the present embodiment. FIG. 3 is a block diagram showing a configuration of a communication processing system according to the base technology.

  In FIG. 3, an IP phone 311 and a PC (Personal Computer) 312 connected to a LAN 390 in the OFFICE 360, and an LTE (Long Term Evolution) / 3G (3rd Generation) 331 and a Wi-Fi (Wires Fidelity) via the Internet 330. ) Extension connection with a mobile terminal device outside the OFFICE 360 such as the smartphones 321 and 322 connected to the 332 is realized through address conversion by the SIP-NAT service 340.

  Here, the SIP-NAT service 340 is a special NAT that also converts an address in a communication (call) message. In the SIP-NAT service 340, the SIP IP address of the IP phone 311 or PC 312 connected to the LAN 390 managed by the SIP server 370 and the global IP address (also referred to as a global address) used in the Internet 330 are mutually converted. Thus, extension connection is realized.

  In FIG. 3, the LAN 390 is connected to the SIP-NAT service 340 via the Internet VPN (Virtual Private Network) 350. A terminal device via a mobile phone network or a fixed telephone network is connected from the LAN 390 via an external gateway 380.

  In the above-mentioned base technology, since it was via the Internet, delay and packet loss were large, and it was difficult to obtain good sound quality with an IP phone. In addition, when a smartphone is used as a terminal, a global IP address and a carrier NAT are used, but a special NAT (SIP-NAT service 340) is necessary to use SIP, and in order to introduce an extension call, There was a cost and cost bottleneck.

<< Configuration of this embodiment >>
Hereinafter, the configuration and operation of the communication processing system according to the present embodiment will be described in detail with reference to FIGS. 2A to 15B.

《Communication processing system》
FIG. 2A is a block diagram illustrating a configuration of the communication processing system 200 according to the present embodiment. In FIG. 2A, a mobile terminal device such as a smartphone or a tablet is connected via an MNO (Mobile Network Operator) and an MVNO (Mobile Virtual Network Operator), but the closed network is directly connected from the MNO without the MVNO. You may connect to. In the present embodiment, the intranet server that manages the closed network gives the extension number and private IP address of the terminal device, and the SIP server registers the extension number and private IP address of the terminal device. As shown, the role of each server may be shared in any way.

  In FIG. 2A, extension connections between IP phones 211 and 212 connected to LAN 290 in OFFICE 260 and mobile terminal devices outside OFFICE 360 such as smartphones 221 to 224 connected via MNO 230 and / or MVNO 240 are global. Realized without conversion between IP address and private IP address.

  Here, the intranet (closed network) 250 is a closed network that manages one or more OFFICEs. In the present embodiment, the intranet (closed network) 250 is directly connected to the MNO 230 or MVNO 240, and the unified private IP address and extension number are assigned to the mobile terminal devices inside and outside the closed network, An extension call is realized without a conversion function between a global IP address and a private IP address.

  In FIG. 2A, the private IP address and the extension number that are unified by the intranet server 251 that manages the intranet (closed network) 250 are assigned in association with each other. Then, the SIP server 270 connected to the LAN 290 registers the assigned private IP address and extension number in association with the connection information inside and outside the closed network, and collectively controls the extension connection. The MVNO 240 is managed by the MVNO server 241. A terminal device via a mobile phone network or a fixed telephone network is connected from the LAN 290 via an external line gateway 280.

  In FIG. 2A, the intranet 250 and the LAN 290 of the OFFICE 260 that are always managed by the intranet server 251 constitute a closed network. Note that APs connected to the intranet 250 and the LAN 290 are also part of the closed network. Accordingly, the IP phones 211 and 212, the SIP server 270, and the external line GW 280 are connected to the inside of the closed network. On the other hand, the connection of the smartphones 221 to 224 via the MNO 230 and / or the MVNO 240 is a connection from the outside of the closed network even in the OFFICE 260 like the smartphones 222 and 223. Further, the mobile phone network and the fixed phone network connected to the external line GW 280 in FIG. 2A are also outside the closed network.

  In FIG. 2A, three thick arrows connecting the terminal devices indicate the state of transmission of the voice information message after the call between the terminal devices is established. That is, in FIG. 2A, the transmission of the voice information message between the smartphone 222 and the smartphone 223 is returned by the MVNO 240. On the other hand, although not shown in FIG. 2A, transmission of the voice information message between the IP phone 211 and the IP phone 212 is performed directly via the LAN 290. Information exchange until a call is established between terminal devices is illustrated and described in detail in FIGS. 4A to 4G.

  Here, at the time of transmission of the voice information message between the smartphone 222 and the smartphone 223, a configuration via the intranet server 251 or the SIP server 270 is also conceivable. However, as the load on the specific server becomes excessive, communication traffic increases, It causes call delay and call error. Therefore, in the following embodiment, when transmitting voice information messages from the smartphones 221 to 224, it is desirable that the MVNO server 241 determines whether the call destination is inside or outside the closed network. For this reason, it is desirable that the MVNO server 241 holds whether each terminal device is inside or outside the closed network. Further, extension numbers and private IP addresses may be assigned based on whether they are inside or outside the closed network. Furthermore, it is good also as a structure which also gives the connection information which shows the inside or the outside of a closed network to the registered terminal device, and includes connection information in a voice information message.

  FIG. 2B is a diagram illustrating an extension call operation procedure by the smartphones 221 to 224 as the mobile terminal devices in the communication processing system 200 according to the present embodiment. Note that the example of FIG. 2B is an example, and the present invention is not limited to this. In FIG. 2B, the smartphone 221 will be described as a representative.

  The display screen 221a of the smartphone 221 shows a state in which a SIM (Subscriber Idensity Module) card (not shown) is inserted into the smartphone 221 and is turned on, authenticated by the MVNO 240, and an application menu to be downloaded is displayed. . Here, the extension call application (extension application 225) is selected. When the extension application 225 is downloaded, the display screen 221b displays a selection button for selecting the extension number of the call destination from the telephone directory or directly inputting the extension number.

  When “phone book 226” is selected, a phone book, a call button 228, and a disconnect button 229 are displayed as in the display screen 221c. On the other hand, when “direct input 227” is selected, a numeric keypad, a call button 228, and a disconnect button 229 are displayed as in the display screen 221d.

  When the extension number is instructed from the display screens 221c and 221d and the call button 228 is pressed, the display moves to the display screen 221e displaying the extension call destination and the extension number, and an incoming call response is received from the extension call destination. When it returns, it moves to a display screen 221f that displays a call, a callee, and a callee extension number.

  When the call is finished and the disconnect button 229 is pressed, the screen returns to the display screen 221b and waits for the next input. In addition, even if it returns to the display screen 221a, you may return to the display screens 221c and 221d.

  As described above, in the present embodiment, a mobile packet network that is normally connected to the Internet is connected to an intranet in a closed network form, and a secure and low-latency network is configured. And the smart phone which gave the private IP address and the extension number on the network is connected with a SIP server, and an extension telephone network is comprised. This allows cheap SIM (SIM cards offered by MVNO at a lower price than major communication carriers), SIM fleece smartphones (the SIM lock is not applied to the smartphone body, so it can be used with multiple carriers by replacing the SIM card) High-quality, low-cost IP telephony using a smart phone. That is, since the extension connection of the terminal device is a connection in the closed network, it is easy to improve the communication quality. In addition, since private IP addresses of companies can be used for both smartphones and SIP servers, NAT is unnecessary, and high quality and low cost between terminal devices connected to the inside and outside of the closed network without making a large investment. Extension telephone calls can be realized.

(Device registration)
FIG. 4A is a sequence diagram showing an operation procedure of terminal registration in the communication processing system 200 according to the second embodiment of the present invention.

  In step S401, a SIM card corresponding to the MVNO 240 is set in the smartphones 221 to 224, and POWER ON is performed. Then, the smartphones 221 to 224 request authentication by transmitting the information read from the SIM card to the MVNO server 241 in step S402. In step S403, the MVNO server 241 performs authentication based on the information of the SIM card, and if authenticated, requests the intranet server 251 to register the smartphones 221 to 224. In step S404, the intranet server 251 performs registration processing for the smartphones 221 to 224. If necessary, the intranet server 251 transmits an application for extension calls to the smartphones 221 to 224 in step S405.

  Further, in step S406, the intranet server 251 gives a pair of an empty private IP address and an extension number to the smartphones 221 to 224. At the same time, the intranet server 251 transmits the set of the assigned private IP address and extension number to the SIP server 270. In step S407, the smartphones 221 to 224 acquire and retain a set of the assigned private IP address and extension number. In step S408, the SIP server 270 registers the pair of the transmitted private IP address and extension number with connection information indicating that it is outside the closed network.

  On the other hand, when new IP phones 211 and 212 are connected and powered on in step S411, the IP phones 211 and 212 request registration to the intranet server 251 in step S412. In step S413, the intranet server 251 performs registration processing for the IP phones 211 and 212.

  In step S414, the intranet server 251 assigns a pair of an empty private IP address and an extension number to the IP phones 211 and 212. At the same time, the intranet server 251 transmits the set of the assigned private IP address and extension number to the SIP server 270. In step S415, the SIP server 270 registers the pair of the transmitted private IP address and extension number with connection information indicating that it is inside the closed network. In addition, the IP phones 211 and 212 acquire and retain a set of the assigned private IP address and extension number in step S416.

  Note that the combination of the private IP address and the extension number to the IP telephones 211 and 212 may be performed via the SIP server 270.

(Smartphone call → IP phone call)
FIG. 4B is a sequence diagram showing an operation procedure of a calling process from the smartphone 221 to the IP phone 211 in the communication processing system 200 according to the present embodiment.

  The smartphone 221 (extension number 221) makes a call to the IP phone 211 (extension number 211) with the extension number 211 in step S421. The call includes the extension number given to the smartphone 221 and the private IP address.

  Intranet server 251 receives the call transmitted via MNO 230 and MVNO server 241 in step S423, acquires the private IP address of SIP server 270, and sends the call to SIP server 270 in step S425. introduce.

  In step S427, the SIP server 270 receives the call, acquires the private IP address of the IP phone 211 from the extension number of the call destination, and determines that the call destination is inside the closed network. In step S429, the SIP server 270 transmits the call using the acquired private IP address to the IP phone 211 (extension number 211).

  In step S431, the IP phone 211 performs an incoming call process, acquires the private IP address of the smartphone 221 from the incoming call message (calling message of the smartphone 221), and holds the private IP address. When the handset is off-hook, IP phone 211 makes an incoming call response to smartphone 221 using the acquired private IP address of smartphone 221 in step S433. This incoming call response message includes the private IP address of IP phone 211.

  The smartphone 221 acquires and holds the private IP address of the IP phone 211 in step S435.

  Thereafter, in step S437, a call between the smartphone 221 and the IP phone 211 is performed without using the SIP server 270 or the intranet server 251 using the private IP address of the smartphone 221 and the private IP address of the IP phone 211. Done directly. When the call ends, a disconnection process is performed in step S439.

  The private IP address of the extension call partner may be deleted by disconnection, but may be used if there is a call with the same extension number until the next call or for a predetermined time.

  FIG. 4C is a diagram illustrating a stack configuration when a call is made from the smartphone 221 to the IP phone 211 in the communication processing system 200 according to the present embodiment. Each stack configuration is associated with the step number of FIG. 4B.

  During the MNO 230, the smartphone 221 and the MVNO 240 are connected by tunneling with a global IP address. In the intranet 250, the private IP address of the SIP server 270 is added. Then, the SIP server 270 replaces the private IP address of the SIP server 270 with the private IP address of the IP telephone 211 based on the extension number of the call destination. Note that the global IP address indicated by a broken line in the intranet 250 is for tunneling when a plurality of SIP servers are connected via an intranet network.

  The IP phone 211 that has acquired the private IP address of the smartphone 221 makes an incoming call response with the acquired private IP address of the smartphone 221 (S433), and the smartphone 221 acquires the private IP address of the IP phone 211 from the incoming call response. (S435). The subsequent call processing (S437) is performed using the private IP address of the smartphone 221 and the private IP address of the IP phone 211.

(IP phone call → smartphone call)
FIG. 4D is a sequence diagram illustrating an operation procedure of a call from the IP phone 211 to the smartphone 221 in the communication processing system 200 according to the present embodiment.

  In step S441, IP phone 211 (extension number 211) makes a call to smartphone 221 (extension number 221) using extension number 221. The call includes the extension number given to the IP phone 211 and the private IP address.

  In step S443, the SIP server 270 receives a call from the IP telephone 211, acquires the private IP address of the smartphone 221 from the extension number of the call destination, and determines that the call destination is outside the closed network To do. In step S445, the SIP server 270 transmits the call to the outside of the closed network using the private IP address acquired toward the smartphone 221. In step S447, the call is transmitted from the MVNO server 241 to the smartphone 221 via the MNO 230.

  In step S449, the smartphone 221 performs incoming call processing, acquires the private IP address of the IP phone 211 from the outgoing call message, and holds it. When an off-hook instruction is given, the smartphone 221 makes an incoming call response to the IP phone 211 using the acquired private IP address of the IP phone 211 in step S451. This incoming call response message includes the private IP address of the smartphone 221.

  In step S453, IP phone 211 acquires and holds the private IP address of smartphone 221.

  Thereafter, in step S455, a call between the smartphone 221 and the IP phone 211 is performed without using the SIP server 270 or the intranet server 251 using the private IP address of the smartphone 221 and the private IP address of the IP phone 211. Done directly. When the call ends, a disconnection process is performed in step S457.

  The private IP address of the extension call partner may be deleted by disconnection, but may be used if there is a call with the same extension number until the next call or for a predetermined time.

  FIG. 4E is a diagram illustrating a stack configuration when a call is made from the IP phone 211 to the smartphone 221 in the communication processing system 200 according to the present embodiment. Each stack configuration is associated with the step number of FIG. 4D.

  The outgoing call of the IP phone 211 is replaced by the SIP server 270 from the private IP address of the SIP server 270 to the private IP address of the smartphone 221 based on the extension number of the call destination. Then, the call is transmitted to the smartphone 221 via the intranet 250, the MVNO 240, and the MNO 230. Note that the global IP address indicated by a broken line in the intranet 250 is for tunneling when a plurality of SIP servers are connected via an intranet network. Further, during the MNO 230, the smartphone 221 and the MVNO 240 are connected by tunneling with a global IP address.

  The smartphone 221 that has acquired the private IP address of the IP phone 211 performs an incoming call response with the acquired private IP address of the IP phone 211 (S451), and the IP phone 211 obtains the private IP address of the smartphone 221 from the incoming call response. Obtain (S453). The subsequent call processing (S455) is performed using the private IP address of the smartphone 221 and the private IP address of the IP phone 211.

(Smartphone call → Smartphone call)
FIG. 4F is a sequence diagram illustrating an operation procedure of a call from the first smartphone 222 to the second smartphone 223 in the communication processing system 200 according to the present embodiment.

  The first smartphone 222 (extension number 222) calls the second smartphone 223 (extension number 223) with the extension number 223 in step S461. The call includes the extension number assigned to the first smartphone 222 and the private IP address.

  Intranet server 251 receives the call transmitted via MNO 230 and MVNO server 241 in step S463, acquires the private IP address of SIP server 270, and sends the call to SIP server 270 in step S465. introduce.

  In step S467, the SIP server 270 receives the call, acquires the private IP address of the second smartphone 223 from the extension number of the call destination, and determines that the call destination is outside the closed network. In step S469, the SIP server 270 transmits the call via the MVNO server 241 and the MNO 230 with the private IP address acquired for the second smartphone 223.

  In step S471, the second smartphone 223 performs an incoming call process, and acquires and holds the private IP address of the first smartphone 222 from the call message. Then, when the off-hook is instructed, the second smartphone 223 performs an incoming call response to the first smartphone 222 using the acquired private IP address of the first smartphone 222 in step S473. This incoming call response message includes the private IP address of the second smartphone 223.

  In step S475, the first smartphone 222 acquires and holds the private IP address of the second smartphone 223.

  Thereafter, in step S477, a call between the first smartphone 222 and the second smartphone 223 is performed by using the private IP address of the first smartphone 222 and the private IP address of the second smartphone 223, and the SIP server 270 or the intranet server. This is done directly without going through H.251. When the call ends, a disconnection process is performed in step S479.

  The private IP address of the extension call partner may be deleted by disconnection, but may be used if there is a call with the same extension number until the next call or for a predetermined time.

(Smart phone call → external phone call)
FIG. 4G is a sequence diagram illustrating an operation procedure of a call from the smartphone 224 to the external line telephone in the communication processing system 200 according to the present embodiment.

  In step S481, the smartphone 224 (extension number 224) makes a call to the external line telephone (external line number 0X-) using the external line number 0X-. The call includes the extension number assigned to the smartphone 224 and the private IP address.

  When the intranet server 251 receives the call transmitted via the MNO 230 and the MVNO server 241 in step S483, the intranet server 251 acquires the private IP address of the external gateway (GW) 280, and in step S485, the call Is transmitted to the outside line GW280.

  In step S487, the external line GW 280 receives the call, holds the caller's private IP address and the external line number in association with each other, and transmits the call to the external line telephone (external line number 0X−) in step S489. To do. The outgoing call is given the global IP address of the external line GW 280 as the transmission source.

  In step S491, the outside line telephone performs an incoming call process, acquires the global IP address of the outside line GW 280 from the call message, and holds it. When the handset is off-hook, the outside line telephone makes an incoming call response to the outside line GW 280 using the acquired global IP address of the outside line GW 280. This incoming call response message includes the telephone number of the external telephone.

  In step S493, the external line GW 280 acquires the private IP address of the corresponding caller (smart phone 224) from the external line number of the incoming call response, and transmits the incoming call response to the smart phone 224. This incoming call response includes the private IP address of the external line GW 280.

  In step S495, the smartphone 224 acquires and retains the private IP address of the external line GW 280.

  Thereafter, in step S497, a call between the smartphone 221 and the external line GW 280 is directly performed using the private IP address of the smartphone 221 and the private IP address of the external line GW 280 without going through the SIP server 270 or the intranet server 251. Done. Also, the external line GW 280 converts the private IP address and the external line number of the smartphone 221 to perform external line connection. When the call ends, a disconnection process is performed in step S499.

  The private IP address of the extension call partner may be deleted by disconnection, but may be used if there is a call with the same extension number until the next call or for a predetermined time. In addition, the operation procedure for making an outgoing telephone call to the smartphone 224 is similar to the procedure in which FIG. 4C is added to FIG.

<< Functional configuration of MVNO server >>
FIG. 5A is a block diagram showing a functional configuration of the MVNO server 241 according to the present embodiment.

  The MVNO server 241 includes a communication control unit 501, an MNO connection unit 502, a connection terminal authentication processing unit 503, a connection terminal registration database 504, a user terminal call processing unit 505, and a closed network connection unit 506.

  The communication control unit 501 controls communication and communication between the MVNO server 241 and the MNO 230 or intranet (closed network) 250. The MNO connection unit 502 includes a tunnel termination GW 507 and controls connection with the MNO 230. In the present embodiment, the tunnel termination GW 507 is provided in the MVNO server 241 so that the management of the MVNO 240 can be performed independently of the MNO 230. However, in the case where the management is entrusted to the MNO 230 or provided together with the MNO 230. The tunnel termination GW 507 may be provided on the MNO 230 side.

  The connection terminal authentication processing unit 503 authenticates the mobile terminal device that permits connection to the MVNO 240 based on the read information of the SIM card from the mobile terminal device such as a smartphone, and if authenticated, the mobile terminal device Is registered in the connection terminal registration database 504. At the same time, the intranet server 251 is notified that the mobile terminal device has been registered.

  The connection terminal registration database 504 stores the mobile terminal device authenticated by the connection terminal authentication processing unit 503. The user terminal call processing unit 505 performs call processing between a mobile terminal device such as a smartphone via the MNO 230 and an IP phone connected to the inside of the closed network while determining that the user terminal call processing unit 505 is an authenticated mobile terminal device. . The user terminal call processing unit 505 also performs a billing process for the MVNO 240 usage fee. The closed network connection unit 506 controls communication connection and call connection between the MVNO server 241 and the intranet server 251 and the SIP server 270 of the intranet 250 or an IP phone via the LAN 290.

(Connected terminal registration database)
FIG. 5B is a diagram showing a configuration of the connection terminal registration database 504 of the MVNO server 241 according to the present embodiment. The configuration of the connection terminal registration database 504 is not limited to FIG. 5B.

  The connection terminal registration database 504 includes a global IP address storage unit 510 of the MVNO server 241, a global IP address storage unit 520 of another server, a SIM card authentication information storage unit 530, and an accounting management information storage unit. 540.

  The global IP address storage unit 510 of the MVNO server 241 stores the global IP address 512 corresponding to the MVNO server ID 511. The storage unit 520 for global IP addresses of other servers stores the global IP address 522 in association with the connection server ID 521. The accounting management information storage unit 540 stores owner information 542 and accounting information 543 in association with the SIM card ID 541.

<< Functional configuration of intranet server >>
FIG. 6A is a block diagram illustrating a functional configuration of the intranet server 251 according to the present embodiment.

  The intranet server 251 includes a communication control unit 601, an MVNO connection unit 602, a connection terminal registration processing unit 603, a connection terminal registration database 604, an extension number and private IP address assignment unit 605, and a LAN connection unit 606. Prepare.

  The communication control unit 601 controls communication and a call between the intranet server 251 and the MVNO server 241 or the LAN 290 (or the SIP server 270). The MVNO connection unit 602 includes a firewall unit 607 and controls connection with the MVNO server 241. In the present embodiment, the intranet server 251 is provided as an independent server for managing the closed network, but may be a closed network management server integrated with the SIP server 270 or the like.

  The connection terminal registration processing unit 603 receives the authenticated notification from the MVNO server 241 and registers the mobile terminal device in the connection terminal registration database 604. Further, upon receiving a notification of connection of a terminal device such as a new IP phone from the LAN connection unit 606, the terminal device is registered in the connection terminal registration database 604. The connection terminal registration database 604 stores the mobile terminal device registered by the connection terminal registration processing unit 603.

  The extension number and private IP address assigning unit 605 assigns a unique extension number and private IP address to each of the registered mobile terminal device and terminal device. The LAN connection unit 606 controls communication connection and call connection between the intranet server 251 and the SIP server 270 or an IP phone via the LAN 290.

(Connected terminal registration database)
FIG. 6B is a diagram showing a configuration of the connection terminal registration database 604 of the intranet server 251 according to the present embodiment. The configuration of the connection terminal registration database 604 is not limited to FIG. 6B.

  The connection terminal registration database 604 includes a storage unit 610 for the global IP address of the intranet server 251 and a storage unit 620 for the private IP address of the connection terminal.

  The global IP address storage unit 610 of the intranet server 251 stores a global IP address 612 corresponding to the intranet server ID 611. The connection terminal private IP address storage unit 620 stores the private IP address 622 and the extension number 623 in association with the connection terminal ID 621 including the SIP server 270 and the external line GW 280. The SIP server 270 and the external line GW 280 do not have an extension number.

<< Functional configuration of SIP server >>
FIG. 7A is a block diagram showing a functional configuration of the SIP server 270 according to the present embodiment.

  The SIP server 270 includes a communication control unit 701, an extension number and private IP address acquisition unit 702, an extension number and private IP address registration control unit 703, a connection terminal registration database 704, an MVNO connection unit 705, and a LAN connection unit. 706 and a user terminal call processing unit 707. In the present embodiment, the connection terminal registration database 704 functions as the related information holding unit 101 of the first embodiment.

  The communication control unit 701 controls communication and communication with the intranet server 251, the MVNO server 241, and the LAN 290 (or IP phone). The extension number and private IP address acquisition unit 702 acquires the extension number and private IP address assigned to the mobile terminal device or terminal device from the intranet server 251. The extension number / private IP address registration control unit 703 registers the acquired extension number and private IP address including connection information indicating whether the extension number and private IP address are connected inside the closed network or outside the closed network. Register in the database 704. The connection terminal registration database 704 stores the extension number and private IP address of the currently connected portable terminal device or terminal device together with the connection information so as to be particularly searchable by the extension number.

  The MVNO connection unit 705 includes a firewall unit 751 and controls connection with the MVNO server 241. In the present embodiment, the SIP server 270 is a server that registers and manages extension numbers and private IP addresses, including portable terminal devices connected outside the closed network. However, in a communication processing system including a plurality of SIP servers, each SIP server may be configured to manage extension numbers and private IP addresses only within its own management range.

  The LAN connection unit 706 controls communication connection and call connection with an IP phone or the like via the LAN 290. The user terminal call processing unit 707 controls communication connection and call connection between a mobile terminal device such as a smartphone via the MVNO server 241 and an IP phone via the LAN 290.

(Connected terminal registration database)
FIG. 7B is a diagram showing a configuration of the connection terminal registration database 704 of the SIP server 270 according to the present embodiment. FIG. 7B shows an example in which connection information inside or outside the closed network is stored independently. The configuration of the connection terminal registration database 704 is not limited to FIG. 7B.

  The connection terminal registration database 704 includes a private IP address storage unit 710 of the SIP server 270 and a connection terminal private IP address storage unit 720.

  The private IP address storage unit 710 of the SIP server 270 stores a private IP address 712 corresponding to the SIP server ID 711. The connection terminal private IP address storage unit 720 stores a private IP address 722, an extension number 723, and a flag 724 indicating whether it is inside or outside the closed network in association with the connection terminal ID 721.

  FIG. 7C is a diagram showing another configuration of the connection terminal registration database 704 of the SIP server 270 according to the present embodiment. FIG. 7C shows an example in which connection information on the inside or outside of the closed network is included in the extension number or private IP address and stored. Note that the configuration of the connection terminal registration database 704 is not limited to FIG. 7C.

  The connection terminal private IP address storage unit 730 stores a private IP address 732 and an extension number 733 including connection information inside or outside the closed network in association with the connection terminal ID 731. In the extension number 733 of FIG. 7C, “500” or less is an IP phone inside the closed network, and “500” or more is a smartphone or tablet outside the closed network. The connection terminal private IP address storage unit 740 includes a private IP address 742 including connection information inside or outside the closed network and connection information inside or outside the closed network in association with the connection terminal ID 741. The extension number 743 is stored. In the private IP address 742 of FIG. 7C, “192.168.10 .---” is an IP phone inside the closed network, “192.168.20 .---” and “192.168.30 .---” are closed networks. External smartphones and tablets are used. The extension number 743 is the same as described above.

  Note that how to include connection information inside or outside the closed network in the extension number or private IP address is not limited to the example of FIG. 7C.

<Functional configuration of outside line GW>
FIG. 8A is a block diagram showing a functional configuration of the external line GW 280 according to the present embodiment.

  The external line GW 280 includes a communication control unit 801, a LAN connection unit 802, a connection terminal registration processing unit 803, a connection terminal registration database 804, a user terminal call processing unit 805, and an external line network connection unit 806.

  The communication control unit 801 controls communication and communication between the external line GW 280 and the LAN 290 or external network. The LAN connection unit 802 controls connection with the LAN 290 (or the SIP server 270).

  The connection terminal registration processing unit 803 registers the mobile terminal device and the external line telephone in the connection terminal registration database 804 based on a call requesting an external line connection or an incoming call from the external line. The connection terminal registration database 804 stores terminal devices that have made or received calls and external line telephones. The user terminal call processing unit 805 particularly performs a call process between a mobile terminal device such as a smartphone via the MNO 230 and an external line telephone connected to the external line network. The external line network connection unit 806 controls communication connection and call connection with an external line telephone or the like via the external line network.

(Connected terminal registration database)
FIG. 8B is a diagram showing a configuration of the connection terminal registration database 804 of the external line GW according to the present embodiment. Note that the configuration of the connection terminal registration database 804 is not limited to FIG. 8B.

  The connection terminal registration database 804 includes a storage unit 810 for the global IP address of the external line GW and a storage unit 820 for the private IP address of the connection terminal.

The global IP address storage unit 810 of the external line GW stores a private IP address 812 and a global IP address 813 corresponding to the external line GW • ID 811. The connection terminal private IP address storage unit 820 stores a private IP address 822 and an external line number 823 in association with the connection terminal ID 821.
《Functional configuration of smartphone》
FIG. 9 is a block diagram illustrating a functional configuration of the smartphones 221 to 224 as mobile terminal devices according to the present embodiment.

  The smartphones 221 to 224 include a communication control unit 901, a SIM card reading unit 902, an authentication request unit 903, an extension number and private IP address acquisition unit 904, an extension number and private IP address holding unit 905, and a call processing unit. 906 and a private IP address acquisition unit 907 of a call destination. Here, the extension number and private IP address acquisition unit 904, the extension number and private IP address holding unit 905, the call processing unit 906, and the private IP address acquisition unit 907 of the call destination are downloaded and executed. Included in the application. The smartphones 221 to 224 further include a display unit 908 and an operation unit 909.

  The communication control unit 901 controls communication with the MVNO server 241. The SIM card reading unit 902 reads the SIM card 921. The authentication request unit 903 sends the read information of the SIM card 921 to the MVNO server 241 and requests authentication of the smartphones 221 to 224.

  The extension number and private IP address acquisition unit 904 acquires a set of the extension number and private IP address assigned via the MVNO server 241. The extension number and private IP address holding unit 905 holds the acquired extension number and private IP address. The call processing unit 906 controls an extension call with a terminal device inside or outside the closed network via the MVNO server 241 or with a terminal device connected to the outside line via the closed network. The private IP address acquisition unit 907 of the call destination acquires and holds the private IP address of the call destination from the message of call origination or call return from the call partner in the call protocol of the call processing unit 906, and holds the call processing unit 906. Used during internal phone calls.

  The display unit 908 displays an operation menu and a notification screen for the state of the smartphone. The operation unit 909 includes a touch panel and inputs a user operation.

<< Hardware configuration of server >>
FIG. 10 is a block diagram illustrating a hardware configuration of each of the servers 241, 251, and 270 according to the present embodiment.

  In FIG. 10, a CPU (Central Processing Unit) 1010 is a processor for arithmetic control, and implements the functional components of each server in FIGS. 5A, 6A, and 7A by executing a program. A ROM (Read Only Memory) 1020 stores fixed data and programs such as initial data and programs. Communication control units 501, 601, and 701 control communication between each server and other servers and terminal devices.

  A RAM (Random Access Memory) 1040 is a random access memory used by the CPU 1010 as a work area for temporary storage. The RAM 1040 has an area for storing data necessary for realizing the present embodiment. The registered terminal information 1041 temporarily stores information on terminal devices registered in the connected terminal registration databases 504, 604, and 704. The call control information 1042 temporarily stores information for controlling a terminal device that makes a call, including an extension number, a private IP address, and connection information in the SIP server. The transmission / reception data 1043 temporarily stores data to be transmitted / received via the communication control units 501, 601, and 701. In this embodiment, the communication message is temporarily stored.

  The storage 1050 stores a database, various parameters, or the following data or programs necessary for realizing the present embodiment. Connection terminal registration databases 504, 604, and 704 are databases registered by each server. The storage 1050 stores the following programs. The server control program 1051 is a program that controls the entire server. The connection terminal registration module 1052 is a module for registering connection terminals in a range managed by each server in each connection terminal registration database. The call control module 1053 is a module for each server to realize an extension call between terminal devices at a route position.

  Note that the RAM 1040 and storage 1050 in FIG. 10 do not show programs and data related to general-purpose functions and other realizable functions of each server.

Server processing procedure
Hereinafter, the processing procedure of each server according to the present embodiment will be described with reference to FIGS.

(Processing procedure of MVNO server)
FIG. 11 is a flowchart showing a processing procedure of the MVNO server 241 according to the present embodiment. This flowchart is executed by the CPU 1010 of FIG. 10 using the RAM 1040 with reference to the connection terminal registration database 504, and implements the functional configuration unit of FIG. 5A.

  The MVNO server 241 determines whether or not there is a reception from the MNO 230 in step S1111. If there is reception from the MNO 230, in step S1113, the MVNO server 241 unencapsulates the received message as the tunnel termination GW and starts charging.

  In step S1115, the MVNO server 241 determines whether the data included in the received message is SIM information. If it is SIM information, the MVNO server 241 performs authentication processing of the mobile terminal device (smartphone) based on the SIM information in step S1117. If authenticated, the MVNO server 241 notifies the intranet server 251 that manages the closed network that it has been authenticated and registered in step S1119. On the other hand, if it is not SIM information, the MVNO server 241 transfers the received unencapsulated message to the communication destination in step S1121. It is a communication destination by an extension number when making a call, and a communication destination by a private IP address at the time of an incoming call response or extension call.

  If there is no reception from the MNO 230, the MVNO server 241 determines whether or not the transmission is to the MNO 230 in step S1131. That is, it is determined whether the transmission is to the mobile terminal device (smart phone) ahead of the MNO 230. If the transmission is to the MNO 230, the MVNO server 241 performs the encapsulation process as the tunnel termination GW in step S1133 and starts charging. In step S1135, the MVNO server 241 tunnels the MNO 230 and transmits the encapsulated transmission message to the portable terminal device (smart phone).

  Further, if it is neither the reception from the MNO 230 nor the transmission to the MNO 230, the MVNO server 241 determines whether or not it is another process of the MVNO server 241 in step S1141, and if it is another process, in step S1143. Perform other processing.

(Intranet server processing procedure)
FIG. 12 is a flowchart showing a processing procedure of the intranet server 251 according to the present embodiment. This flowchart is executed by the CPU 1010 of FIG. 10 using the RAM 1040 with reference to the connection terminal registration database 604, and implements the functional configuration unit of FIG. 6A.

  In step S <b> 1211, the intranet server 251 determines whether there is an authentication notification of the mobile terminal device (smart phone) from the MVNO server 241. When there is an authentication notification, the intranet server 251 gives an extension number and a private IP address to the authenticated mobile terminal device in step S1213. In step S1215, the intranet server 251 sends the extension number and the private IP address to the mobile terminal device (smart phone) via the MNO 230. At the same time, in step S1217, the intranet server 251 sends connection information indicating connection outside the closed network to the SIP server 270 in the extension number and private IP address.

  If there is no authentication notification from the MVNO server 241, the intranet server 251 determines in step S1221 whether it is a terminal connection notification from inside the closed network. If it is a terminal connection notification from the inside of the closed network, the intranet server 251 assigns an extension number and a private IP address to the terminal device (IP phone) inside the connected closed network in step S1223. In step S1225, the intranet server 251 sends the extension number and the private IP address to the terminal device (IP phone) via the LAN 290. At the same time, in step S1227, the intranet server 251 includes connection information indicating the connection within the closed network in the extension number and the private IP address, and sends them to the SIP server 270.

  Furthermore, if neither the authentication notification from the MVNO server 241 nor the connection notification of the terminal device in the closed network via the LAN 290 is received, the intranet server 251 determines whether or not the other processing is performed on the intranet server 251 in step S1231. And if it is another process, the intranet server 251 will perform another process in step S1233.

(SIP server processing procedure)
FIG. 13 is a flowchart showing a processing procedure of the SIP server 270 according to the present embodiment. This flowchart is executed by the CPU 1010 of FIG. 10 using the RAM 1040 with reference to the connection terminal registration database 704, and realizes the functional configuration unit of FIG. 7A.

  In step S1311, the SIP server 270 determines whether or not registration information of the mobile terminal device (smart phone) or the terminal device (IP phone) has been received from the intranet server 251. Connection information indicating connection inside the closed network or connection outside the closed network is included in the extension number and private IP address and registered in the connection terminal registration database 704.

  If the registration information is not received, the SIP server 270 determines in step S1321 whether or not an extension call from any portable terminal device (smart phone) or portable terminal (IP phone) has been received. When receiving the call of the extension call, the SIP server 270 acquires the private IP address and connection information of the corresponding call destination based on the extension number of the call destination in step S1323. In step S1325, the SIP server 270 determines whether the call destination is inside or outside the closed network from the connection information. If it is outside the closed network, the SIP server 270 transfers the call to the MVNO server 241 in step S1327. On the other hand, if it is inside the closed network, the SIP server 270 transfers the call to the LAN 290 in step S1329.

  If neither registration information is received nor extension call is received, the SIP server 270 determines whether or not the mobile terminal device (smartphone) or the mobile terminal (IP phone) has been deleted in step S1331. The registration deletion may be performed when the mobile terminal device (smartphone) or the mobile terminal (IP phone) is turned OFF. Alternatively, the portable terminal (IP phone) may be performed by the user's deletion instruction, and the portable terminal device (smartphone) may be performed with POWER OFF. In the case of registration deletion, the SIP server 270 performs terminal device registration deletion from the connection terminal registration database 704 in step S1333. At the same time, the SIP server 270 notifies the intranet server 251 of registration deletion in order to release the extension number and private IP address in step S1335.

《Smartphone hardware configuration》
FIG. 14 is a block diagram illustrating a hardware configuration of the smartphones 221 to 224 as mobile terminal devices according to the present embodiment.

  In FIG. 14, a CPU 1410 is a processor for arithmetic control, and implements each functional component of the smartphones 221 to 224 of FIG. 9 by executing a program. The ROM 1420 stores fixed data and programs such as initial data and programs. The communication control unit 901 controls communication with the MVNO server 241 in this embodiment.

  The RAM 1440 is a random access memory that the CPU 1410 uses as a work area for temporary storage. The RAM 1440 has an area for storing data necessary for realizing the present embodiment. The SIM card information 1441 is information read from the SIM card. The assigned extension number 1442 is an extension number given to the smartphone. The assigned private IP address 1443 is a private IP address assigned to the smartphone. The extension number 1444 of the call destination is an extension number assigned to the terminal device of the extension call destination. The private IP address 1445 of the call destination is a private IP address assigned to the terminal device of the extension call destination. The input / output data 1446 is data input / output by the input / output device via the input / output interface 1460. Transmission / reception data 1447 is data transmitted / received to / from the MVNO server 241 via the communication control unit 901.

  The storage 1450 stores a database, various parameters, or the following data or programs necessary for realizing the present embodiment. The terminal device information 1451 stores information on the smartphone. A telephone number book (extension number book) 1452 stores telephone numbers of call destinations in a table format. The storage 1050 stores the following programs. The terminal device control program 1453 is a program for controlling the entire terminal device. The extension application program 1454 is an application for downloaded extension calls. The terminal device registration module 1455 is a module that authenticates the smartphone and requests assignment of an extension number and a private IP address. The call information acquisition module 1456 is a module for acquiring a private IP address of a call partner from a call message or a call response message. The call control module 1457 is a module that executes an extension call using each other's private IP address.

  The input / output interface 1460 provides an interface for controlling data input / output with the input / output device. In the present embodiment, a display unit 908 and an operation unit 909 are connected to the input / output interface 1460. The input / output interface 1460 is further connected to a voice input / output unit 1461, a SIM card reading unit 902, a GPS position calculation unit 1462, and the like.

  Note that the RAM 1440 and the storage 1450 in FIG. 14 do not show programs and data related to general-purpose functions and other realizable functions of the smartphones 221 to 224.

《Smartphone processing procedure》
FIG. 15A is a flowchart illustrating a processing procedure of the smartphones 221 to 224 according to the present embodiment. This flowchart is executed by the CPU 1410 of FIG. 14 using the RAM 1440, and implements each functional component of FIG. In the following description, the smartphone 221 is representatively described.

  The smartphone 221 waits for POWER ON in step S1501. When POWER ON is selected, the smartphone 221 reads the contents of the SIM card in step S1503. In step S1505, the smartphone 221 requests the authentication by transmitting the SIM card information to the MVNO server 241.

  If there is an authentication reply, the smartphone 221 displays an application menu for realizing the provided service in step S1509. In step S1511, the smartphone 221 determines whether an extension application is selected from the application menu. When the extension application is selected, the smartphone 221 acquires (for example, downloads) the extension application in step S1513. Then, in step S1515, the smartphone 221 executes the extension application.

  On the other hand, when another application is selected in step S1511, the smartphone 221 executes the other application in step S1519 and returns to step S1509. The smartphone 221 determines POWER OFF in step S1517. If it is not POWER OFF, the smartphone 221 returns to step S1509. If it is determined that POWER OFF is set, the smartphone 221 stops the process.

(Extension application)
FIG. 15B is a flowchart showing a processing procedure of the extension application (S1515) according to the present embodiment.

  In step S1520, the smartphone 221 acquires and holds the extension number for the own device and the private IP address. In step S1521, the smartphone 221 determines whether the call is an incoming call.

  If the call is an incoming call, the smartphone 221 performs a user call operation in step S1523. For example, a ringing tone is generated or vibration is performed. In step S1525, the smartphone 221 determines whether the user has made an incoming call response (operation corresponding to off-hook). If the incoming call response operation is performed, in step S1527, the smartphone 221 attaches its own private IP address to the incoming call response message and sends it back to the caller.

  On the other hand, if it is not an incoming call, the smartphone 221 determines whether or not a call operation has been performed in step S1531. If it is determined that the call operation has been performed, the smartphone 221 transmits a call message including the extension number of the call destination, the private IP address of the call source, and the extension number in step S1533. In step S1535, the smartphone 221 waits for an incoming call response message. When receiving the incoming call response message, the smartphone 221 acquires the private IP address of the call destination included in the incoming call response message in step S1537.

  Since the smartphone 221 has acquired both private IP addresses to be talked by the processes up to step S1527 or S1537, in step S1541, the smartphone 221 performs an extension call using both private IP addresses. When the call is finished, the smartphone 221 executes a disconnection process in step S1543. Then, in step S1545, the smartphone 221 determines whether or not it is an extension application termination instruction. If not, the smartphone 221 returns to step S1521 and waits for the next incoming call or call.

  According to the present embodiment, an extension call is performed using a unified private IP address. Therefore, without making a large investment like the SIP-NAT service, an IP phone or the like connected to the inside of the closed network can be used. High-quality and inexpensive extension calls between smartphones connected to the outside can be realized.

[Third Embodiment]
Next, a communication processing system according to the third embodiment of the present invention will be described. The communication processing system according to the present embodiment differs from the second embodiment in that the MVNO server assigns and manages the extension number and private IP address of the terminal device. Since other configurations and operations are the same as those of the second embodiment, the same configurations and operations are denoted by the same reference numerals, and detailed description thereof is omitted.

《Communication processing system》
The operation procedure in the communication processing system 1600 of this embodiment will be described with reference to FIGS. 16A to 16G. Note that the configuration of the communication processing system 1600 is similar to that of FIG. 2A, and is different from the internal configuration and operation of the functional configuration unit, so illustration and description thereof are omitted.

(Device registration)
FIG. 16A is a sequence diagram showing an operation procedure of terminal registration in the communication processing system 1600 according to the present embodiment. In FIG. 16A, steps similar to those in FIG. 4A are denoted by the same step numbers, and description thereof is omitted.

  When the authentication based on the SIM card information ends in step S1603, the MVNO server 1641 included in the server group 1650 transmits the extension application in step S1604. In step S1605, the MVNO server 1641 assigns the private IP address and the extension number to the connection terminal connected to the outside of the closed network, and registers the smartphones 221 to 224. At this time, the node to which the connection terminal is connected is also registered.

  On the other hand, the registration request from the connected IP phones 211 and 212 in step S1612 is transmitted to the MVNO server 1641. In step S1613, the MVNO server 1641 performs registration processing, and in step S1614, assigns a private IP address and an extension number. At this time, the node to which the connection terminal is connected is also registered.

  The private IP address and extension number assigned to the connection terminal connected to the inside of the closed network are registered in the SIP server 1670 in step S1616, and acquired and held by the IP phones 211 and 212. Note that the registration of the private IP address and extension number by the intranet server 1651 in step S1615 is not essential in the present embodiment, and is shown by a broken line. Furthermore, since the MVNO server 1641 plays a role of managing the closed network in total, the intranet server 1651 is not essential.

(Smartphone call → IP phone call)
FIG. 16B is a sequence diagram illustrating an operation procedure of a call from the smartphone 221 to the IP phone 211 in the communication processing system 1600 according to the present embodiment. In FIG. 16B, steps similar to those in FIG. 4B are denoted by the same step numbers, and description thereof is omitted.

  In step S <b> 1623, the MVNO server 1641 acquires the private IP address of the SIP server 1670 that manages the IP phone 211 in response to a call from the smartphone 221 to the IP phone 211. Then, the MVNO server 1641 transmits the call to the SIP server 1670 in step S1625.

  In step S1627, the SIP server 1670 obtains a private IP address from the extension number of the call destination. Here, in the present embodiment, since the call to the SIP server 1670 is a call to a terminal device inside the closed network, it is necessary to store and determine connection information whether the SIP server 1670 is inside or outside the closed network. Absent. The subsequent processing is the same as in FIG. 4B.

  FIG. 16C is a diagram illustrating a stack configuration when a call is made from the smartphone 221 to the IP phone 211 in the communication processing system 1600 according to the present embodiment. In FIG. 16C, the same step number is assigned to the same stack as in FIG. 4C, and description thereof is omitted.

  In FIG. 16C, unlike FIG. 4C, in MVNO 1640, the private IP address of the SIP server 1670 is assigned. Then, in the SIP server 1670, a private IP address is assigned from the extension number of the call destination (IP telephone) without determining connection information inside or outside the closed network. The other stack changes are the same as in FIG. 4C.

(IP phone call → smartphone call)
FIG. 16D is a sequence diagram illustrating an operation procedure of a call from the IP phone 211 to the smartphone 221 in the communication processing system 1600 according to the present embodiment. In FIG. 16D, steps similar to those in FIG. 4D are denoted by the same step numbers, and description thereof is omitted.

  The SIP server 1670 receives the call from the IP telephone 211, and determines whether or not the call destination extension is in the database in step S1643. That is, since the SIP server 1670 registers and manages only terminal devices within the management range of its own device, the SIP server 1670 is within the management range if the call destination extension is in the database, and is not within the database. It can be determined that it is out of the management range. Since the extension number of the smartphone 221 is not registered, the call is transmitted to the MVNO server 1641.

  In step S1645, the MVNO server 1641 receives a call from the SIP server 1670, obtains a private IP address from the call destination extension number, and makes a call to the inside of the closed network connected to another SIP server. Or a call to the outside of the closed network via the MNO 230. Since the call to the smartphone 221 is a call to the outside of the closed network, the MVNO server 1641 calls to the outside of the closed network via the MNO 230 in step S447. The subsequent processing is the same as in FIG. 4D.

  FIG. 16E is a diagram showing a stack configuration when a call is made from the IP phone 211 to the smartphone 221 in the communication processing system 1600 according to the present embodiment. In FIG. 16E, the same stack numbers as those in FIG.

  In FIG. 16E, unlike FIG. 4E, since the extension number of the smartphone 221 is not registered in the SIP server 1670, the private IP address of the call destination cannot be acquired. It is sent to the MVNO 1640 as it is, and the private IP address of the smartphone 221 is acquired from the call destination extension number by the MVNO server 1641. The other stack changes are the same as in FIG. 4E.

(Smartphone call → Smartphone call)
FIG. 16F is a sequence diagram illustrating an operation procedure of a call from the first smartphone 222 to the second smartphone 223 in the communication processing system 1600 according to the present embodiment. In FIG. 16F, steps similar to those in FIG. 4F are denoted by the same step numbers, and description thereof is omitted.

  In FIG. 16F, since the MVNO server 1641 can determine that the call destination is another smartphone 223 outside the closed network, in step S1663, the private IP address of the call destination is acquired, and the call is made via the MNO 230. The call can be transmitted to the smartphone 223 as it is. The subsequent processing is the same as in FIG. 4F.

(Smart phone call → external phone call)
FIG. 16G is a sequence diagram showing an operation procedure for making a call from the smartphone 224 to the external telephone in the communication processing system 1600 according to the present embodiment. In FIG. 16G, steps similar to those in FIG. 4G are denoted by the same step numbers, and description thereof is omitted.

  In FIG. 16G, instead of the intranet server 251 of FIG. 4G, the MVNO server 1641 acquires the private IPO address of the external line GW in step S1683, and transmits the call to the external line GW in step S1585. The subsequent processing is the same as in FIG. 4G.

(Connected terminal registration database)
FIG. 17 is a diagram showing a configuration of the connection terminal registration database 1704 of the MVNO server 1641 according to the present embodiment. In FIG. 17, the same components as those in FIG. 5B are denoted by the same reference numerals, and description thereof is omitted. Further, the configuration of the connection terminal registration database 1704 is not limited to FIG. In the present embodiment, the connection terminal registration database 1704 functions as a part of the related information holding unit 101 of the first embodiment.

  The connection terminal registration database 1704 has a storage unit 1740 for the private IP address of the connection terminal. The connection terminal private IP address storage unit 1740 stores a private IP address 1742 and a connection node 1743 in association with the connection terminal ID 1741 including the SIP server and the external line GW.

  The connection node 1743 is information indicating that the connection terminal is connected to the subordinate. A connection node 1743 is not required for a SIP server, an external line GW, or the like. The extension number is stored as the connection terminal ID 1741 of a terminal device such as a smartphone or an IP telephone, and the SIP server, MNO, and external line GW are stored as the connection node 1743.

  With this connection terminal registration database 1704, it is possible to acquire the private IP address of whether the connection node of the terminal device of the call destination is outside or inside the closed network.

(Connected terminal registration database)
FIG. 18 is a diagram showing a configuration of the connection terminal registration database 1804 of the SIP server 1670 according to the present embodiment. In FIG. 18, the same components as those in FIGS. 7B and 7C are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the connection terminal registration database 1804 functions as a part of the related information holding unit 101 of the first embodiment.

  The connection terminal private IP address storage unit 1820 of the connection terminal registration database 1804 stores a private IP address 1822 and an extension number 1823 in association with the connection terminal ID 1821. Since the terminal device under the SIP server 1670 is registered in the storage unit 1820 of the private IP address of the connection terminal, it is inside the closed network, and whether it is inside or outside the closed network as shown in FIGS. There is no need to have connection information. The MVNO server 1641 holds connection information inside or outside the closed network.

(Operation procedure of MVNO server)
FIG. 19 is a flowchart showing an operation procedure of the MVNO server 1641 according to this embodiment. In FIG. 19, steps similar to those in FIG. 11 are denoted by the same step numbers and description thereof is omitted.

  In step S1919 of the reception process from the MNO 230, the MVNO server 1641 assigns an extension number and a private IP address to the terminal, and the connection terminal registration database together with connection information (corresponding to the connection node in FIG. 17) indicating the outside of the closed network. 1704 is registered.

  In step S1921, the MVNO server 1641 determines whether it is a registration request from the closed network. If it is a registration request from the closed network, the MVNO server 1641 gives an extension number and a private IP address to the terminal device in step S1923, and connection information indicating the inside of the closed network (corresponding to the connection node in FIG. 17). At the same time, it is registered in the connection terminal registration database 1704. Then, the MVNO server 1641 sends the extension number and the private IP address to the SIP server 1670 in step S1925.

(SIP server operation procedure)
FIG. 20 is a flowchart showing an operation procedure of the SIP server 1670 according to the present embodiment. In FIG. 20, steps similar to those in FIG. 13 are denoted by the same step numbers and description thereof is omitted.

  In step S2011, the SIP server 1670 determines whether or not registration information has been received from the MVNO server 1641. If the registration information is received, in step S2013, the SIP server 1670 stores in the connection terminal registration database 1804 the extension number and private IP address assigned to the terminal device to be registered included in the registration information from the MVNO server 1641. sign up. Then, the extension number and private IP address are transferred to the terminal device to be registered and held.

  If an extension call is received, the SIP server 1670 determines in step S2023 whether or not the extension number of the call destination exists in the connection terminal registration database 1804. If there is no extension number, it is out of the control of the SIP server 1670, so in step S1327, the call is transferred to the MVNO server 1641. On the other hand, if there is an extension number, since it is under the control of the SIP server 1670, a private IP address is acquired in step S2025, and the call is transferred to the LAN 290 in step S1329.

  According to this embodiment, a communication processing system including an MVNO server is introduced without making a large investment, and between an IP phone connected inside the closed network and a smartphone connected outside the closed network High-quality and inexpensive extension calls can be realized.

[Fourth Embodiment]
Next, a communication processing system according to the fourth embodiment of the present invention will be described. The communication processing system according to the present embodiment is different from the second embodiment and the third embodiment in that the MVNO server, the intranet server, and the SIP server are realized as virtual servers in the cloud server. Since other configurations and operations are the same as those of the second embodiment or the third embodiment, the same configurations and operations are denoted by the same reference numerals, and detailed description thereof is omitted.

《Communication processing system》
FIG. 21 is a block diagram illustrating a configuration of a communication processing system 2100 according to the present embodiment. In FIG. 21, the same reference numerals are assigned to the same functional components as those in FIG.

  In this embodiment, the MVNO server 241, the intranet server 251 and the SIP server 270 of FIG. 2A are mounted on the cloud server 2150 as the virtual MVNO server 2141, the virtual intranet server 2151 and the virtual SIP server 2170.

  Note that the virtual server realized by the cloud server 2150 is not limited to the configuration in FIG. 21 and may be a part of the configuration. For example, in the case of a system in which a plurality of SIP servers are connected, the SIP server may be installed in each OFFICE.

(VNF: Virtual network function)
FIG. 22 is a block diagram showing a configuration of a cloud server 2150 using VNF (Virtual Network Function) according to the present embodiment. Note that the configuration of the cloud server 2150 is not limited to an example realized by VNF.

  The cloud server 2150 includes a physical server 2200 and a physical switch 2230. The physical server 2200 includes a set 2210 of software that implements each virtual network function and a virtual machine (VM) that executes the software, and a control unit (vSwitch, VMM) that controls a processing path between the software and the VM. ) 2220. In the cloud server 2150, a packet including a control message and a call message is input to the physical switch 2230, processed by the selected VNF in the physical server 2200 according to the processing path, and output.

  FIG. 22 shows an example in which the virtual MVNO server 2141, the virtual intranet server 2151, and the virtual SIP server 2170 are realized by VNF, but MME (Mobility Management Entity), DPI (Deep Packet Inspection), LB (Load Balancer) Other functions may be added.

  According to the present embodiment, it is possible to provide a communication processing system that realizes an extension call of the present embodiment only by preparing a terminal device connected to the inside of a closed network and a terminal device connected to the outside of the closed network. Can do.

[Fifth Embodiment]
Next, a communication processing system according to a fifth embodiment of the present invention will be described. The communication processing system according to the present embodiment is different from the second to fourth embodiments in that the mobile terminal device corresponds to both the communication processing system of FIG. 2A and the communication processing system of FIG. Different. Since other configurations and operations are the same as those in the second to fourth embodiments, the same configurations and operations are denoted by the same reference numerals, and detailed description thereof is omitted.

《Communication processing system》
FIG. 23 is a block diagram showing a configuration of a communication processing system 2300 according to the present embodiment. In FIG. 23, the same functional components as those in FIG. 2A or FIG.

  In FIG. 23, when a smartphone 2321 as a mobile terminal device is used in Japan by replacing a SIM card, an extension call is realized using the route of the present embodiment shown in FIG. 2A and used outside the country. Realizes an extension call through the route of the base technology shown in FIG.

  Note that switching between FIG. 2A and FIG. 3 is not limited to replacement of the SIM card. You may implement | achieve by operation of mode switching and replacement of an application.

  According to the present embodiment, a single mobile terminal device can support a plurality of extension call modes.

[Other Embodiments]
The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention. In addition, a system or an apparatus in which different features included in each embodiment are combined in any way is also included in the scope of the present invention.

  For example, in the above-described embodiment, the terminal device on the calling side has been described as calling with the private IP address as the caller information. However, in the table registered as a database by the SIP server or MVNO server, the registered extension numbers and private IP addresses are stored in association with each other. Therefore, even if the terminal device on the calling side makes a call using the extension number as the caller information, it can be converted into the private IP address of the caller and transmitted to the callee.

  In the second embodiment, the intranet server assigns the extension number and the private IP address, and the SIP server registers them. In the third embodiment, the MVNO server assigns the extension number and the private IP address. The role assignment of each server is not limited to these. Or the structure by which the some server of this embodiment was integrated by one server, or the structure by which one server was divided | segmented into plurality according to the role conversely may be sufficient.

  In addition, the present invention may be applied to a system composed of a plurality of devices, or may be applied to a single device. Furthermore, the present invention can also be applied to a case where a communication processing program that realizes the functions of the embodiments is supplied directly or remotely to a system or apparatus. Therefore, in order to realize the functions of the present invention on a computer, a program installed in the computer, a medium storing the program, and a WWW (World Wide Web) server that downloads the program are also included in the scope of the present invention. . In particular, at least a non-transitory computer readable medium storing a program for causing a computer to execute the processing steps included in the above-described embodiments is included in the scope of the present invention.

Claims (15)

A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network Related information holding means for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, Call transmission means connected to the inside or outside of the closed network indicated by connection information and transmitting to the second terminal device having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission means for transmitting to the first terminal device connected to the inside or outside of the network;
With
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. Communication processing system.   The communication processing system according to claim 1, wherein the related information holding unit includes the connection information in at least one of the private address and the extension number. An adding unit that associates and assigns the private address and the extension number to the at least two terminal devices;
The communication processing system according to claim 1, wherein the related information holding unit holds the private address and the extension number in association with the connection information when the adding unit gives.   The communication processing system according to claim 3, wherein at least a part of the adding unit, the related information holding unit, the call transmission unit, and the incoming call transmission unit is realized by a virtual network function.   5. The communication processing system according to claim 3, wherein at least a part of the adding unit, the related information holding unit, the call transmission unit, and the incoming call transmission unit is mounted on a cloud server. .   The terminal device connected to the outside of the closed network is connected to the closed network via a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier. Item 4. The communication processing system according to any one of Items 1 to 3.   The communication processing according to claim 6, wherein at least a part of a private network provided by the mobile carrier and a private network provided by the virtual mobile carrier is realized by a virtual network function. system.   Furthermore, at least one part of the private network which the said mobile carrier provides and the private network which the said virtual mobile carrier provides is mounted in the cloud server of Claim 6 or 7 Communication processing system. An external line connection unit having a global address, and holding the private address and the external line number in association with each other;
The external line connecting means connects the terminal apparatus connected to the outside of the closed network and the terminal apparatus having the external line number to an external line via an extension line connection. The communication processing system according to item. A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network A related information holding step for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, A call transmission step of transmitting to the second terminal device connected to the inside or outside of the closed network indicated by connection information and having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission step of transmitting to the first terminal device connected to the inside or outside of the network;
Including
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. Communication processing method. A connection indicating a private address and an extension number assigned to each of at least two terminal devices, indicating whether each of the at least two terminal devices is connected inside the closed network or outside the closed network A related information holding step for holding the information in association with the information;
A call from the first terminal device to the second terminal device including the first private address of the first terminal device and the second extension number of the second terminal device among the at least two terminal devices, A call transmission step of transmitting to the second terminal device connected to the inside or outside of the closed network indicated by connection information and having a second private address corresponding to the second extension number;
The closed area in which the connection information indicates an incoming call response to the call by the second terminal device, including the second private address of the second terminal device and the first private address of the first terminal device. An incoming call transmission step of transmitting to the first terminal device connected to the inside or outside of the network;
A communication processing program for causing a computer to execute
When the first terminal apparatus receives the incoming call response, a call is established between the first terminal apparatus and the second terminal apparatus using the first private address and the second private address. A communication processing program. A first request means for reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
Second request means for requesting the private network to give an extension number and a private address;
Holding means for receiving and holding the extension number and the private address from the private network;
A call processing means for transmitting a call message, including at least the extension number of the call destination and the private address of the call source;
First address acquisition means for acquiring a private address of the call destination included in an incoming call response message from the call destination;
Second address acquisition means for acquiring the private address of the caller included in the incoming call message;
An incoming call processing means for transmitting an incoming call response message including at least a private address of a caller and a callee;
An extension call means for sending and receiving call messages using each other's private address;
A mobile terminal device comprising: A first request step of reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
A second requesting step for requesting the private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A call processing step for transmitting a call message, including at least a callee extension number and a caller private address;
A first address acquisition step of acquiring a private address of the call destination included in an incoming call response message from the call destination;
A second address acquisition step of acquiring a private address of the caller included in the incoming call message;
An incoming call processing step of sending an incoming call response message including at least the caller and callee private addresses;
An extension call step for sending and receiving call messages using each other's private address;
A method for controlling a portable terminal device including: A first request step of reading a SIM card and requesting authentication and registration in a private network provided by a mobile carrier or a private network provided by a virtual mobile carrier;
A second requesting step for requesting the private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A call processing step for transmitting a call message, including at least a callee extension number and a caller private address;
A first address acquisition step of acquiring a private address of the call destination included in an incoming call response message from the call destination;
A second address acquisition step of acquiring a private address of the caller included in the incoming call message;
An incoming call processing step of sending an incoming call response message including at least the caller and callee private addresses;
An extension call step for sending and receiving call messages using each other's private address;
A program for controlling a portable terminal device that causes a computer to execute. A request step for requesting a private network to give an extension number and a private address;
Receiving and holding the extension number and the private address from the private network; and
A calling step for performing a calling process to a terminal device of a call destination;
An incoming call step for performing an incoming call process from the terminal device of the call destination;
A call step for making a call with a terminal device of a call destination;
A communication processing program for causing a computer to execute
The calling step includes
Transmitting a call message including at least the extension of the callee and the private address of the caller;
Obtaining the private address of the call destination included in an incoming call response message from the call destination;
Including
The incoming call step includes:
Obtaining the private address of the caller included in an incoming call message;
Transmitting an incoming call response message including at least the private address of the caller and the callee;
Including
A communication processing program for transmitting and receiving a call message using the private addresses of the caller and the callee in the call step.

Images