JP2013115639A - Telephone device and telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable discrimination on the possibility of P2P (peer-to-peer) communication by an IPv6 address in an IP telephone system that provides a data connect service using an IPv4 protocol.SOLUTION: In an IP telephone device 100, after exchanging a notification and a response of the IPv6 address with an opposite IP telephone device in a data connect session, IPv6 communication test means 118 performs a communication test with the opposite IP telephone device by the P2P communication. If the communication test fails, the IP telephone device 100 exchanges the notification and the response of the IPv4 address, and acquires the IPv4 address of the opposite IP telephone device to store it into acquisition protocol information storage means 119, and then completes the data connect session. Thereafter, based on the acquired IPv4 address, the IP telephone device 100 transmits and receives data with the opposite IP telephone device through an IPv4 network by the P2P communication.

Description

  The present invention relates to an IP telephone apparatus and an IP telephone system that can use a data connect service, and in particular, in a data connect session, an IPv6 address notification response is sent to the other party, and then by P2P (peer-to-peer) communication. An IPv6 communication test is performed, and when the IPv6 communication test fails, an IPv4 address notification response is made, the data connect session is terminated, and then data transmission / reception is performed by Internet communication (P2P communication) based on the IPv4 address. The present invention relates to an IP telephone apparatus and an IP telephone system.

  In recent years, with the development of communication infrastructure, various additional services related to communication have become widespread. For example, telephone devices that can connect to a wide-area communication network such as an IP telephone network or the Internet and receive various services such as a data communication service have become widespread. As a service for such a telephone device, a videophone service has been put into practical use. A user of the videophone service can make a voice call while transmitting and receiving a captured image by connecting a videophone device having an imaging function and an image transmission function to a communication line. Such an IP videophone apparatus is disclosed in, for example, the following Patent Document 1 (Japanese Patent Laid-Open No. 2011-078057).

  In general, communication devices such as an IP telephone device, a PC, and various terminal devices disclosed in Patent Document 1 communicate with each other via an Internet network, and are referred to as Internet Protocol. Communicate with each other by connecting to the Internet using the global IP address assigned according to the above.

  In this Internet protocol, IPv4 (Internet Protocol Version 4) that manages IP addresses with 32 bits is generally used, but the maximum number of terminals that can be identified by IPv4 is about 4.2 billion, and the total number of addresses will be in the near future. It is said that the limit will be reached. Therefore, considering the exhaustion of IP addresses in IPv4, IPv6 (Internet Protocol Version 6) that manages IP addresses with 128 bits is beginning to be used. According to IPv6, a hexadecimal number delimits every 16 bits with a colon, and the IP address is expressed by a total of 128 bits, so that it is possible to assign an IP address to a virtually infinite terminal in the calculation.

  On the other hand, at present, IP telephone services using an optical communication network are provided to users, and some telephone companies (communication carriers) are referred to as data connect services as one of the functions of IP telephone services. Service is provided to the user. This service is currently provided to users as an IP telephone device and IP telephone system compatible with IPv4.

  When this data connect service is used, it is possible to connect to the other party by a connection request using a telephone number, make a voice call during connection, and transmit / receive data by data connect communication. However, there is a charge for using the data connect service from the start to the end of the data connect session, including the transmission and reception of files by data connect communication. In the case of an IP telephone device, file transmission / reception does not use the data connect service, and if P2P (peer-to-peer) data transmission / reception is performed via the Internet, the communication cost is lower than that of the data connect service.

However, if you want to transfer data during a call using the Data Connect service, it is more expensive to use the data communication in the Data Connect session as it is. The effort is simple.

JP 2011-078057 A

  As described above, an IP telephone service using an optical communication network is provided to users, and some telephone companies (communication carriers) use data as one function of the IP telephone service using the IPv4 protocol. A service called a connect service is provided to the user. In addition, such IP telephone systems and IP telephone apparatuses are also provided to users as a configuration corresponding to the IPv6 protocol.

  By the way, in the IPv4 protocol, a host name such as a DNS server (Domain Name Server) is set so that a human being can easily identify a device to which an IP address is assigned. In the IPv6 protocol, a host name corresponding to an IPv6 address is set as in the case of IPv4. In the case of IPv4, only a single IPv4 address could be assigned to a single network interface. However, IPv6 has a feature that a plurality of IPv6 addresses can be assigned to a single network interface, and a plurality of host names corresponding to a plurality of IPv6 addresses can be set.

  If the IP telephone apparatus belongs to an IP telephone system that provides a data connect service using the IPv4 protocol and the IP telephone apparatus can also support the IPv6 protocol, the data connection session using the IPv4 protocol An IP address assigned in accordance with the IPv6 protocol of the other party's IP telephone device is acquired, and after the data connector session is completed by the acquired IP address, they can be connected to each other via the IPv6 network to perform P2P (peer-to-peer) communication. Devices that can support both IPv4 and IPv6 protocols can be configured using dual stack operation. Such devices are disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-254318 and Japanese Translation of PCT International Publication No. 2010-502119.

  However, when the host to which one of the IP telephone devices belongs is constructed as being closed to a network in a certain area, the IP address assigned in accordance with the same IPv6 protocol is assigned to the IP telephone device. There is a possibility that a telephone device cannot be specified and a P2P (peer-to-peer) network connection cannot be established.

  In addition, the user cannot know the reason why the network connection cannot be made by the IPv6 protocol, and the user may be troubled such as the possibility of a device failure. In addition, there is a problem in that it is not convenient for the user because it is necessary to restart the procedure of connecting each other through the IPv4 network according to the IP address according to the IPv4 protocol.

The present invention has been made to solve such problems, and in an IP telephone system and an IP telephone apparatus that provide a data connect service using the IPv4 protocol, the other party's IP telephone apparatus in a data connect session. It is an object of the present invention to obtain an IP address assigned in accordance with the IPv6 protocol, and to determine whether P2P (peer-to-peer) communication is possible based on the obtained IPv6 address.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application is capable of communicating with an IPv6 network based on the IPv6 protocol and an IPv4 network based on the IPv4 protocol, and transmits and receives data by P2P communication. An IP telephone system comprising an IP telephone apparatus capable of using a data connect service based on the IP telephone apparatus, the IP telephone apparatus comprising an IPv6 communication test means and an acquisition protocol information storage means, After sending an IPv6 address notification response to the telephone device, the IPv6 communication test means performs a communication test with the other party's IP telephone device by P2P communication, and a communication test with the other party's IP telephone device. IPv4 address if failed A notification response is made to obtain the protocol information including the IPv4 address of the other party's IP telephone device, store it in the obtained protocol information storage means, terminate the data connect session, and then the IP telephone device Data is transmitted / received by P2P communication with the other party's IP telephone apparatus via the IPv4 network based on the IPv4 address stored in the protocol information storage means.

  In the IP telephone system according to claim 2 of the present application, in the IP telephone system according to claim 1, when the communication test with the counterpart IP telephone apparatus is successful, the IP telephone apparatus performs the data connect session. Then, based on the IPv6 address acquired by the IPv6 address notification response, data is transmitted / received to / from the other party's IP telephone device through P2P communication via the IPv6 network.

  In the IP telephone system according to claim 3 of the present application, in the IP telephone system according to claim 1, when the communication test with the counterpart IP telephone apparatus is successful, the IP telephone apparatus notifies the IPv6 address. The data connect session is terminated after data is transmitted / received by P2P communication with the other party's IP telephone device via the IPv6 network based on the IPv6 address acquired by the response.

  The invention according to claim 4 of the present application is capable of communicating with an IPv6 network based on the IPv6 protocol and an IPv4 network based on the IPv4 protocol, transmits and receives data by P2P communication, and provides a data connect service based on the IPv4 protocol. An IP telephone apparatus that can be used. The IP telephone apparatus includes an IPv6 communication test means and an acquired protocol information storage means, and makes an IPv6 address notification response with a counterpart IP telephone apparatus in a data connect session. Thereafter, the IPv6 communication test means performs a communication test with the other party's IP telephone device by P2P communication, and when the communication test with the other party's IP telephone device fails, performs an IPv4 address notification response, IPv4 address of the other party's IP telephone device The protocol information including the address is acquired and stored in the acquired protocol information storage unit, and the data connect session is terminated. Thereafter, the IP telephone apparatus performs the IPv4 network based on the IPv4 address stored in the acquired protocol information storage unit. In this case, data is transmitted / received by the P2P communication with the other party's IP telephone device.

  In the invention according to claim 5 of the present application, in the IP telephone apparatus according to claim 4, when the communication test with the counterpart IP telephone apparatus is successful, the IP telephone apparatus terminates the data connect session. Thereafter, data is transmitted / received by P2P communication with the other party's IP telephone device via the IPv6 network based on the IPv6 address acquired by the IPv6 address notification response.

  In the invention according to claim 6 of the present application, in the IP telephone apparatus according to claim 4, when the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus receives the notification response of the IPv6 address. The data connect session is terminated after data is transmitted / received by P2P communication with the other party's IP telephone device via the IPv6 network based on the acquired IPv6 address.

  In the invention according to claim 1, after the IP telephone apparatus makes an IPv6 address notification response with the other party IP telephone apparatus in the data connect session, the IPv6 communication test means uses the second party IP telephone apparatus by P2P communication. If the communication test with the other party's IP telephone apparatus fails, an IPv4 address notification response is sent to obtain the IPv4 address of the other party's IP telephone apparatus and store the acquired protocol information The data connection session is terminated by storing the data in the means 119, and thereafter, data is transmitted / received by P2P communication with the other party's IP telephone apparatus via the IPv4 network based on the acquired IPv4 address.

  In the invention according to claim 2, when the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus ends the data connect session, and then the IPv6 address notification response. Based on the IPv6 address acquired by the above, data is transmitted / received through the IPv6 network to the other party's IP telephone apparatus by P2P communication.

  According to such a configuration, even when P2P file transmission / reception via the IPv6 network cannot be performed with the counterpart IP telephone apparatus, data transmission / reception can be performed via the IPv4 network. Since the communication is performed by P2P communication via the IPv6 network or the IPv4 network without using the network, the communication cost can be reduced.

  In the invention according to claim 3, when the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus sets up an IPv6 network based on the IPv6 address acquired by the notification response of the IPv6 address. The data connection session is terminated after transmitting / receiving data to / from the other party's IP telephone apparatus via P2P communication.

  According to such a configuration, when data can be transmitted / received to / from the other party's IP telephone device via the IPv6 network, data is transmitted by P2P communication via the IPv6 network based on the IPv6 address acquired by the IPv6 address notification response. It is possible to save the user's trouble of ending the connect session and performing another P2P communication operation via the IPv6 network.

  According to the inventions according to claims 4 to 6, it is possible to provide an IP telephone apparatus constituting the IP telephone system according to claims 1 to 3.

It is a figure which shows the structure of the communication system containing the IP telephone apparatus concerning the Example of this invention. It is a block diagram which shows the structure of the IP telephone apparatus concerning the Example of this invention. It is a sequence diagram which shows the communication procedure concerning the Example of this invention. It is a sequence diagram which shows the communication procedure concerning the Example of this invention.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. However, the embodiment described below exemplifies an IP telephone apparatus and an IP telephone system for embodying the technical idea of the present invention, and the present invention is specified to the IP telephone apparatus and the IP telephone system. The technical scope of the present invention is defined by the description of the scope of claims.

  FIG. 1 is a system configuration diagram showing the configuration of the entire IP telephone system including the IP telephone apparatus of the present invention. In this embodiment, this system includes an IP telephone apparatus 100, a wired LAN 101, an IP telephone router 102, a broadband router 103, a gateway 104, an IP telephone network 105, the Internet 106, and a PSTN network 107 (= Public Switched Telephone Network). ), And the subscriber telephone device 108.

  The IP telephone apparatus 100 of the present invention is connected to a wired LAN 101. The wired LAN 101 is connected to an IP telephone network 105 via an IP telephone router 102, to the Internet 106 via a broadband router 103, and to a PSTN network 107 via a gateway 104. Communication is possible by connecting each. Details of the internal structure of IP telephone apparatus 100 will be described later. The IP telephone device 100 can use the data connect service, and is configured to support both the IPv4 protocol and the IPv6 protocol using the dual stack operation.

  Examples of physical means constituting the wired LAN 101 include 10BASE-T (standardized as IEEE802.3i) and 100BASE-TX (standardized as IEEE802.3u) using a twisted pair cable.

The IP telephone router 102 and the broadband router 103 are network relay devices for interconnecting a plurality of IP networks. Specifically, OSI (Open Systems
Interconnection) Transfer is performed by analyzing a part of the protocol of the network layer (third layer) and the transport layer (fourth layer) in the reference model.

  In this example, the IP telephone router 102 has a role of connecting two IP networks of the wired LAN 101 and the IP telephone network 105 to each other. The broadband router 103 has a role of connecting two IP networks of the wired LAN 101 and the Internet 106 to each other.

  The gateway 104 is a protocol converter for interconnecting networks having different protocol systems. For example, the gateway 104 connects the wired LAN 101 and the PSTN network 107 and performs signal conversion using a signaling protocol such as SIP (Session Initiation Protocol), thereby enabling communication between both networks.

The IP telephone network 105 is a communication network using VoIP (Voice over Internet Protocol) technology for part or all of the telephone network, and FTTH (Fiber To The) is used as a communication line to be used.
A so-called broadband line such as Home) or ADSL (Asymmetric Digital Subscriber Line) is used. Note that a plurality of IP telephone devices 100 'are connected to the IP telephone network 105, but only one is shown in FIG. 1 for simplicity.

  Note that VoIP is a technique in which voice is compressed by various encoding methods, divided into packets, and transmitted in real time over an IP network. As a result, the IP telephone network 105 can provide a videophone service for transmitting and receiving images in addition to a voice call service.

  The Internet 106 is a wide area communication network constructed by interconnecting networks based on communication protocols. An international communication network is constructed by interconnecting large and small computer networks. As a communication protocol, TCP / IP is mainly adopted as a standard protocol.

  The PSTN network 107 is a general subscriber telephone line network. A subscriber telephone device 108 is connected to the terminal, and is used to make a voice call by connecting to a communication partner by a circuit switching method. The subscriber telephone device 108 uses the PSTN network 107 to allow the telephone subscriber to make a voice call with other subscriber telephone devices connected to the PSTN network, or with IP telephone devices connected to the wired LAN 101 or the IP telephone network 105. Telephone equipment.

  The IP telephone apparatus 100 according to the present invention is a telephone apparatus that can use the data connect service, and performs a P2P communication based on the IPv6 address after sending an IPv6 address notification response to the other party in the data connect session. IPv6 communication test such as test file transmission / reception processing is performed. When the IPv6 communication test fails, the IPv4 address notification response is sent and the data connect session is terminated, and then data is transmitted by Internet communication based on the IPv4 address. It is configured to send and receive files. Hereinafter, the IP telephone apparatus 100 of the present embodiment will be described in detail.

  FIG. 2 is an internal block diagram illustrating the configuration of the IP telephone apparatus 100 according to the present embodiment. The IP telephone apparatus 100 includes a control unit 110, a microphone 120, a speaker 130, a camera 140, a display unit 150, an input unit 160, a memory 170, and a LAN interface 180.

  The control unit 110 is a microprocessor that includes a CPU, a RAM, and a ROM. The CPU executes a control program stored in the RAM or ROM, thereby controlling and supervising operations of each unit described below. To do.

  The control unit 110 includes a communication control unit 111, an audio signal processing unit 112, an image / video signal processing unit 113, and a display control unit 114, and an IPv6 control stack 115, so as to support both the IPv4 protocol and the IPv6 protocol. An IPv4 control stack 116 is provided, and file transmission / reception control means 117 for performing file transmission / reception based on the data connect service is provided. Further, in order to execute the communication procedure according to the present invention, it has an IPv6 communication test 118, and has an acquisition protocol information storage means 119 for temporarily storing information related to the IPv4 protocol acquired from the other party's IP telephone apparatus.

  The IPv6 communication test 118 has a test file prepared in advance. In the data connect session, after sending an IPv6 address notification response to the other party, the test file is transmitted and received by P2P (peer-to-peer) communication. The IPv6 communication test is performed.

  The communication control unit 111 is for performing communication control when the IP telephone apparatus 100 communicates with another IP telephone apparatus 100 '. This includes control related to signaling and data transmission / reception. Signaling includes the creation, establishment and disconnection of communication sessions. Specifically, when the user operates the input unit 160 to input a telephone number or the like, the IP telephone device connected to the SIP server (not shown) or the like connected to the IP telephone network 105 is connected to The location information of 100 ′ is acquired, the IP telephone device 100 ′ of the call partner is called, a communication path is established when the call partner responds, and a session end process is performed when the call ends. It is included.

  The communication is performed based on the communication protocol (IPv6 protocol or IPv4 protocol) selected by the user. When the IPv6 protocol is selected, the IPv6 control stack 115 functions, and when the IPv4 protocol is selected, the IPv4 control is performed. The stack 116 functions.

  For control related to data transmission / reception, IP packet processing for dividing audio data, video data, and image data into packets and transmitting the packets received via the wired LAN 101 are rearranged in the correct order and the actual data portion And extracting and assembling. Further, the data connect service is provided based on the IPv6 protocol, sends an IPv6 address notification response to the other party's IP telephone apparatus, obtains the IPv6 address of the other party's IP telephone apparatus, and uses P2P communication via the IPv6 network for the user. The data file selected by is transmitted / received by the file transmission / reception control means 117.

  When transmitting data as a packet, a header indicating the transmission source, destination, order, transmission time, and usage (IP phone audio data, video data, image data) is added to each data divided into predetermined data lengths. . The received packet is assembled in the correct order for each of the audio, video, and image by referring to the header portion, and is output to the audio signal processing means 112 and the image / video signal processing means 113.

  The audio signal processing unit 112 performs A / D conversion on the audio input from the microphone 120, and then performs compression processing using an audio codec, and outputs the compressed data to the communication control unit 111. Further, the audio data assembled in the communication control unit 111 is decompressed by an audio codec, then D / A converted and output from the speaker 130.

  The image / video signal processing unit 113 includes a video codec, compresses the video captured by the camera 140, and outputs the compressed data to the communication control unit 111. Further, the video data assembled by the communication control unit 111 is decompressed and output to the display control unit 114. The image / video signal processing unit 113 includes an image codec, decompresses the image data assembled by the communication control unit 111, and expands the image data in a memory (RAM of the control unit 110).

  The display control unit 114 processes the video data output from the camera 140 and the image / video signal processing unit 113 and the image data developed in the memory (RAM of the control unit 110) into a predetermined mode that can be displayed on the display unit 150. And displayed on the display unit 150.

  As described above, the IP telephone apparatus 100 according to the present invention is a telephone apparatus that can use the data connect service. In the data connect session, after the IPv6 address notification response is received with the other party, the IPv6 address is set. An IPv6 communication test such as a test file transmission / reception process for P2P communication based on the address is performed. When the IPv6 communication test fails, an IPv4 address notification response is sent to terminate the data connect session, and then the IPv4 address The data file is transmitted and received based on the Internet communication.

  That is, in the IP telephone apparatus 100 according to the present invention, file transmission / reception with the other party's IP telephone apparatus is performed using P2P (peer-to-peer) communication without using the data connect service, and data connect communication is performed using the IPv4 protocol. The terminal (IP telephone device) and the HGW (home gateway) communicate with each other using a local address, and the HGW transmits data (file) to the other party's global address for communication. is there.

  In the data connect session, the IP telephone device 100 sends a notification response of the IPv6 address to the other party by P2P communication, and then the IPv6 communication test 118 uses the prepared test file as a data file for the IPv6 communication test. , Perform transmission / reception processing by P2P (peer-to-peer) communication with the other party's IP telephone device, and when the transmission / reception of the test file fails and the IPv6 communication test fails, the IPv4 address notification response is performed by data connect communication, Data connection session by acquiring information related to the IPv4 protocol from the other party's IP telephone apparatus, temporarily storing the acquired information in the acquired protocol information storage means 119, and informing the user that P2P (peer-to-peer) communication based on the IPv6 protocol has failed. ExitThereafter, based on the protocol information including the IPv4 address stored in the acquired protocol storage means 119, the user specifies the other party's IP telephone device by P2P communication according to the IPv4 protocol, and transmits / receives a desired data file by Internet communication. .

  Next, a communication processing procedure of the IP telephone apparatus 100 according to the present invention will be described with reference to sequence diagrams showing the communication procedure of FIGS. 3 and 4 are sequence diagrams showing a communication procedure of the IP telephone apparatus according to the embodiment of the present invention. FIG. 3 is a sequence in a case where the IPv6 communication test (test file transmission / reception) in the data connect session is successful. FIG. 4 shows a sequence when the IPv6 communication test (test file transmission / reception) in the data connect session fails. The sequence diagrams of FIGS. 3 and 4 illustrate the case where file transmission is performed using the data connect service from the IP telephone apparatus 100 on the own apparatus side to the IP telephone apparatus on the other side.

  In FIG. 3, the communication of sequences SQ1, SQ2, and SQ4 is performed via each other's home gateway (HGW), and the communication of sequences SQ3 and SQ5 is performed by P2P communication.

  First, the IP telephone device 100 on the own device side transmits an UPDATE command to the partner device (IP phone device) in sequence Q1, and when the partner device receives the UPDATE command, the 200 OK command as a response command is sent to the own device side IP phone. A data connect session based on the telephone number of the partner device is started by responding by transmitting to the device 100.

  Next, in the sequence SQ2, the IP telephone apparatus 100 on the own apparatus side transmits a P2P communication notification based on the IPv6 protocol to the other apparatus (IP telephone apparatus), and the other apparatus transmits an IP address based on its own IPv6 as a P2P communication response. The IPv6 protocol information is transmitted to the local IP telephone device 100 as a response, and the IP address notification and response according to the IPv6 protocol are completed.

  Next, the IP telephone device 100 on the own device side uses the IPv6 P2P communication according to the IPv6 protocol information (IP address or the like) of the counterpart device acquired by the notification / response of the sequence SQ2 in the sequence SQ3, and the IPv6 communication test means 118. To send the test file to the partner device and wait for a response from the partner device. Upon receiving the test file 118, the counterpart device transmits response data to the IP telephone device 100 on the own device side as a response, and ends the mutual communication confirmation by the IPv6 protocol.

  When the communication of the mutual IPv6 protocol can be confirmed by the processing of sequence SQ3 (test file transmission / reception response), the IP telephone apparatus 100 on the own apparatus side returns the counterpart apparatus (IP When the UPDATE command is transmitted to the telephone device and the partner device receives the UPDATE command, a 200 OK command, which is a response command, is transmitted to the IP phone device 100 on the own device side to respond, and a data connect session based on the telephone number of the partner device Exit.

  After terminating the data connect session by the process of sequence SQ4, the IP telephone apparatus 100 on the own apparatus side performs a process of transmitting / receiving a desired data file by P2P communication according to IPv6 via the IPv6 network in sequence SQ5.

  Next, with reference to the sequence diagram of FIG. 4, a process when the communication confirmation (test file transmission / reception response) by the IPv6 protocol in the sequence SQ3 of FIG. 3 fails will be described. In the sequence of FIG. 4, P2P communication notification and response processing for the IPv4 protocol of sequence SQ (a) is added between SQ3 and SQ4 in the sequence of FIG. 3, and P2P communication of the data file in sequence SQ5 of FIG. The difference is that the P2P communication of the data file is performed using the IPv4 protocol as in the sequence SQ (b), whereas the IPv6 protocol is used.

  When communication according to the IPv4 protocol is performed in a data connect session, local IP addresses are used between the own device (IP telephone device 100) and the HGW (home gateway), and between the other device side IP telephone device and the HGW (home gateway). And the IPv4 global IP address of the telephone device on the partner device side is not used.

  The procedure of sequences SQ1 to SQ3 is the same as the procedure of FIG. However, in FIG. 4, unlike the procedure of sequence SQ3 in FIG. 3, the test file is transmitted from the IP telephone apparatus 100 as the own apparatus to the partner apparatus, but the test file does not reach the partner apparatus and the response data is sent to the own apparatus side. The IP telephone apparatus 100 cannot receive the information, and the mutual communication confirmation by the IPv6 protocol cannot be performed (communication confirmation has failed).

In this case, the IP telephone apparatus 100 that is the own apparatus assigns the port of the IP telephone apparatus 100 to the uPnP port in sequence SQ (a), and transmits a notification of P2P communication by the IPv4 protocol to the counterpart apparatus (IP telephone apparatus). That is, uPnP (Universal Plug
and Play), NAT (Network Address Translation) of the IPv4 protocol is set, and the IPv4 global IP address and port number of the IP telephone device on the partner device side are acquired.

  The counterpart device responds by transmitting IPv4 protocol information such as a global IP address based on its own IPv4 as a P2P communication response to the IP phone device 100 on the own device side, and completes the notification and response of the IP address etc. according to the IPv4 protocol. . The own device side IP telephone device 100 temporarily stores the protocol information such as the IP address according to the IPv4 protocol of the partner device acquired by this processing in the acquired protocol information storage means.

  Thereafter, in sequence SQ4, IP telephone apparatus 100 on the own apparatus side transmits an UPDATE command to the partner apparatus (IP telephone apparatus), and when the partner apparatus receives the UPDATE command, A certain 200 OK command is transmitted to the own apparatus side IP telephone apparatus 100 to respond, and the data connect session based on the telephone number of the partner apparatus is terminated. The process of sequence SQ4 is the same as the process of sequence SQ4 in FIG.

Next, after terminating the data connect session by the process of sequence SQ4, the IP telephone apparatus 100 on the own device side, in sequence SQ (b), creates a desired data file by P2P communication according to IPv4 over the IPv4 network. Performs transmission / reception processing. The process of sequence SQ (b) is different from the process of sequence SQ5 in FIG. 3 only in that P2P communication using the IPv4 protocol is performed. It should be noted that the transition of the P2P communication using the IPv4 protocol can be automatically performed in the IP telephone apparatus 100 based on the result of the sequence SQ (a).

  As described above in detail, according to the IP telephone apparatus and IP telephone system according to the present invention, a test file transmission / reception process is performed after an IPv6 address notification response is received with the other party in a data connect session. When the test file transmission / reception fails, an IPv4 address notification response is made, the data connect session is terminated, and then the data file is transmitted / received by Internet communication based on the IPv4 address. The IP address of the counterpart IP telephone apparatus that could not be connected to the network can be easily acquired, and a desired data file can be transmitted / received by P2P communication using the IPv4 protocol after the data connect session is terminated. .

  In the procedure shown in the sequence diagram of FIG. 3, the procedure for performing P2P communication using the IPv6 protocol after terminating the data connect session when the communication check using the IPv6 protocol is successful has been described. Therefore, the P2P communication based on the IPv6 protocol may be performed while the data connect session is continued, and the data connect session may be terminated after the P2P communication is terminated. In this way, when the communication confirmation by the IPv6 protocol is successful, the user can transmit and receive the data file without performing another operation for P2P communication by the IPv6 protocol.

  In the description of the above embodiment, the IP telephone apparatus 100 makes a IPv6 address notification response with the other party in the data connect session, and then performs a test file for P2P communication based on the IPv6 address by the IPv6 communication test 118. Although an example of performing the IPv6 communication test by performing the transmission / reception processing is shown, the method of the IPv6 communication test is not limited to this. For example, a method of trying to establish a TCPIP connection may be used, or a method using a packet based on ICMPv6 may be used.

10 IP phone system 100 IP phone device (communication device)
DESCRIPTION OF SYMBOLS 110 Control part 111 Communication control means 112 Audio | voice signal processing means 113 Image / video signal processing means 114 Display control means 115 IPv6 control stack 116 IPv4 control stack 117 File transmission / reception control means 118 IPv6 communication test means 119 Acquisition protocol information storage means 120 Microphone 130 Speaker 140 Camera 140
150 Display Unit 160 Input Unit 170 Memory 180 LAN Interface

Claims (6)

An IP configured by an IP telephone apparatus that can communicate with an IPv6 network based on the IPv6 protocol and an IPv4 network based on the IPv4 protocol, transmits and receives data by P2P communication, and can use a data connect service based on the IPv4 protocol. A telephone system,
The IP telephone apparatus includes an IPv6 communication test means and an acquisition protocol information storage means, and after sending a notification response of an IPv6 address with the counterpart IP telephone apparatus in a data connect session, the IPv6 communication test means performs the P2P communication. When a communication test with the other party's IP telephone apparatus is performed and the communication test with the other party's IP telephone apparatus fails, an IPv4 address notification response is made and the IPv4 address of the other party's IP telephone apparatus is included. Protocol information is acquired and stored in the acquired protocol information storage means, and the data connect session is terminated. Thereafter, the IP telephone apparatus transmits the IPv4 address via the IPv4 network based on the IPv4 address stored in the acquired protocol information storage means. The P2P communication with the other party's IP telephone device IP telephone system is characterized in that so as to transmit and receive data.   If the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus ends the data connect session, and then establishes an IPv6 network based on the IPv6 address obtained by the IPv6 address notification response. 2. The IP telephone system according to claim 1, wherein data is transmitted / received to / from the other party's IP telephone apparatus through P2P communication.   When the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus establishes P2P and the other party's IP telephone apparatus via the IPv6 network based on the IPv6 address acquired by the IPv6 address notification response. 2. The IP telephone system according to claim 1, wherein the data connect session is terminated after transmitting and receiving data by communication. An IP telephone device that can communicate with an IPv6 network based on the IPv6 protocol and an IPv4 network based on the IPv4 protocol, transmits and receives data by P2P communication, and can use a data connect service based on the IPv4 protocol,
The IP telephone apparatus includes an IPv6 communication test means and an acquisition protocol information storage means, and after sending a notification response of an IPv6 address with the counterpart IP telephone apparatus in a data connect session, the IPv6 communication test means performs the P2P communication. When a communication test with the other party's IP telephone apparatus is performed and the communication test with the other party's IP telephone apparatus fails, an IPv4 address notification response is made and the IPv4 address of the other party's IP telephone apparatus is included. Protocol information is acquired and stored in the acquired protocol information storage means, and the data connect session is terminated. Thereafter, the IP telephone apparatus transmits the IPv4 address via the IPv4 network based on the IPv4 address stored in the acquired protocol information storage means. The P2P communication with the other party's IP telephone device IP telephone apparatus being characterized in that so as to transmit and receive data.   If the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus ends the data connect session, and then establishes an IPv6 network based on the IPv6 address obtained by the IPv6 address notification response. 5. The IP telephone apparatus according to claim 4, wherein data is transmitted / received to / from the other party's IP telephone apparatus through P2P communication.   When the communication test with the other party's IP telephone apparatus is successful, the IP telephone apparatus establishes P2P and the other party's IP telephone apparatus via the IPv6 network based on the IPv6 address acquired by the IPv6 address notification response. 5. The IP telephone apparatus according to claim 4, wherein the data connect session is terminated after transmitting and receiving data by communication.

Images