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Session control system, communication terminal, servers and terminals

A technology of information communication and dialogue control, applied in telephone communication, automatic switching office, electrical components, etc., can solve problems such as difficulty in introduction, difficulty in calling and answering calls, difficulty in answering calls, etc.

Inactive Publication Date: 2005-03-16
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very difficult to make a call to an IPv6-compatible information communication terminal and to answer a call from an IPv6-compatible information communication terminal
Similarly, it is very difficult to make and answer calls from an IPv4 / v6 dual-compatible information communication terminal registered in IPv6 to an IPv4-compatible information communication terminal
Although such a problem can also be solved by using the above-mentioned SIP-ALG and NAT, the method in which the two devices cooperate with each other indirectly follows the protocol between the SIP-ALG and NAT, and it is necessary to indirectly connect a plurality of devices to each other. It is difficult, so introduction to the network is difficult

Method used

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  • Session control system, communication terminal, servers and terminals
  • Session control system, communication terminal, servers and terminals
  • Session control system, communication terminal, servers and terminals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Fig. 21 is a packet format of a SIP packet communicated in the present invention. A SIP data packet is composed of a SIP payload part, a SIP header part, a four-layer header (UDP or TCP), and an IP header.

[0042] Fig. 22 is an example of a SIP header of a SIP packet used in the present invention.

[0043] Fig. 23 is an example of a payload portion of a SIP packet used in the present invention. Interactions between the two terminals that support services or communication capabilities that support protocols, etc., are performed using this payload portion. Specify IPv4 with c as the communication protocol in this payload section. For example, when the communication capabilities between the two terminals are different, whether or not to select another step is determined from the filter.

[0044]FIG. 24 is a configuration diagram of the IPv4 / v6 dual-compatible SIP server 1 according to the present invention. The physical layer terminal 600 terminates the physical layer...

Embodiment 1-1

[0069] FIG. 3 and FIG. 4 are an example of a communication procedure in the case where the Ipv4 / v6 dual-compatible information communication terminal 5 and the Ipv4-compatible information communication terminal 6 communicate according to the present invention. FIG. 3 shows the procedure of making a call from the Ipv4 / v6 dual compatible information communication terminal 5, and FIG. 4 shows the procedure of making a call from the Ipv4 terminal. The order indicated by the solid line in the figure indicates the steps of communicating with IPv6 data packets, and the order indicated by dotted lines indicates the steps of communicating with IPv4 data packets. In this embodiment, the Ipv4 / v6 dual-compatible information communication terminal 5 and the Ipv4-compatible information communication terminal 6 log in to the same Ipv4 / v6 dual-compatible server 1 .

[0070] The Ipv4 / v6 dual correspondence information communication terminal 5 of the present embodiment logs in to the Ipv4 / v6 du...

Embodiment 1-2

[0078] FIG. 5 and FIG. 6 are an example of a communication procedure in the case where the Ipv4 / v6 dual-compatible information communication terminal 5 and the Ipv4-compatible information communication terminal 6 communicate according to the present invention. FIG. 5 shows the procedure of calling from the Ipv4 / v6 dual SIP information communication terminal 5, and FIG. 6 shows the procedure of calling from the Ipv4 terminal. The order shown by the solid line in the figure shows the procedure for performing communication using IPv6 packets, and the order shown by dotted lines shows the procedure for performing communication using IPv4 packets. In this embodiment, a case where the Ipv4 / v6 dual-compatible information communication terminal 5 and the Ipv4-compatible information communication terminal 6 log in to the same Ipv4 / v6 dual-compatible SIP server 1 is shown. FIG. 5 shows that in the present embodiment, the Ipv4 / v6 dual correspondence information communication terminal 5 s...

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Abstract

A SIP server (1) having the function of accepting simultaneous IPv4 / IPv6 registrations from an IPv4 / IPv6 dual SIP terminal (5-7), recognizing a protocol communicable with a communication partner terminal, and notifying the IPv4 / IPv6 dual SIP terminals of the result of the recognition if necessary, thereby to allow VoIP communication between the IPv4 / IPv6 dual SIP terminal and an IPv4 terminal or an IPv6 terminal to be the communication partner.

Description

technical field [0001] The present invention relates to a session control device, a terminal device, and a network system on the Internet, and more particularly, to a SIP server executing SIP (Session Initiation Protocol), a terminal device, and a network system using these devices. Background technique [0002] With the popularity of the Internet, the requirements for communication services on the Internet are gradually increasing. Even voice communication over the existing telephone network has become available on the Internet. Voice communication on the Internet is performed after establishing a terminal session based on H323 and SIP (Session Initiation Protocol). In particular, SIP is becoming more and more popular as a de facto standard (default standard) of a session control function on the Internet, and it is gradually expanding to not only voice communication, but also real-time message exchange or presence service. use. [0003] On the other hand, in response to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L45/52H04M3/00
CPCH04L69/16H04L65/1006H04L69/24H04L69/167H04L69/18H04L69/08H04L29/06027H04L65/1104H04L65/1101
Inventor 坂本健一汤本一磨川井惠理清藤聪史
Owner HITACHI LTD