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Method for H.323 agent server to register on gatekeeper from terminals after being agent of NAT

A proxy server, H.323 technology, applied in the field of registration of multimedia terminals, can solve problems such as incompatibility of gatekeepers, and achieve the effect of improving interconnection and interoperability and good compatibility

Inactive Publication Date: 2005-02-23
ZTE CORP
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  • Abstract
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Problems solved by technology

[0009] The present invention is in order to overcome the incompatibility problem with different types of gatekeepers when the H.323 proxy server behind NAT registers with the gatekeeper in the prior art, and proposes a H.323 proxy server proxy NAT terminal to the gatekeeper method of registration

Method used

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  • Method for H.323 agent server to register on gatekeeper from terminals after being agent of NAT
  • Method for H.323 agent server to register on gatekeeper from terminals after being agent of NAT
  • Method for H.323 agent server to register on gatekeeper from terminals after being agent of NAT

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Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] figure 1 It has already been explained in the background art.

[0040] figure 2It is a flow chart of the registration method proposed by the present invention. The main process of the method proposed by the invention is as follows: the H.323 proxy server first establishes a listening port pool (a segment of port addresses), and after receiving the registration request of the private network terminal, the H.323 proxy server takes out a listening port from the port pool. Listen to the port, change the registration address of the terminal registration request to the public IP address of the H.323 proxy server and the port listening for the terminal, and then register with the gatekeeper. If the gatekeeper fails to register or the terminal cancels the registration, the H.323 The proxy server releases the terminal's listening port for us...

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Abstract

The method includes following steps: in the H.323 protocol, the login address of private network adopts the express form that is IP address+port, the proxy server distributes monitoring port to different terminal login, uses the method that is same IP address +different port to indicates different terminal, that makes the different private network terminal to send out different login address through one H.323 proxy server, so different type net keeper can correctly logs in.

Description

technical field [0001] The invention relates to multimedia communication, in particular to a registration method of a multimedia terminal based on the H.323 protocol (which is a packet network multimedia communication standard formulated by the International Telecommunication Union). Background technique [0002] With the vigorous development of IP network broadband services in recent years, the packet-based multimedia communication system standard H.323 is widely used in video conferencing and IP telephony. Since many enterprises and units have built their own local area networks, private IP addresses are used internally, and access to the public network is generally performed through a NAT device for address translation. The H.323 protocol itself does not consider the application of NAT (Network Address Translation, which is divided into static NAT, dynamic NAT and PAT), and its address embedded features conflict with NAT devices, resulting in internal , the problem of ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/28H04L29/06H04L29/12
CPCH04L61/2517H04L29/12377H04L29/12009H04L65/1009H04L29/06027H04L61/00H04L65/1106
Inventor 李加周曹珈沈灿李军
Owner ZTE CORP
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