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A H.323 terminal and method for video frequency communicating with H.324 terminal

A technology of H.323 and H.324, applied in the field of communication, which can solve problems such as differences in the opening time of session channels, video quality degradation, and inability to display images.

Inactive Publication Date: 2008-11-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method for video intercommunication between an H.323 terminal and an H.324 terminal, which is used to solve the problem in the prior art that the H.323 terminal and the H.324 terminal serve as the calling party and the called party respectively. When the mode is used, due to the difference in the time when the session channel is opened, the video quality is degraded, or the image cannot be displayed.

Method used

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  • A H.323 terminal and method for video frequency communicating with H.324 terminal
  • A H.323 terminal and method for video frequency communicating with H.324 terminal
  • A H.323 terminal and method for video frequency communicating with H.324 terminal

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Embodiment Construction

[0023] see figure 2 , is a schematic diagram of the operation flow of the H.323 terminal serving as the calling party in the present invention. The specific process is as follows:

[0024]When the H.323 terminal is used as the calling side to call the called side H.324 terminal, the H.323 terminal first sends a link establishment request message (ITU-T Q.931 Setup message) to the video conversion gateway, which carries There is a fastStart parameter, indicating that the terminal supports the fast start mode and intends to transmit data in the fast start mode; after the video conversion gateway receives the link establishment request message, it sends a ringing message to the H.323 terminal (ITU- TQ.931 Alerting message), call processing message (ITU-T Q.931 Call Proceeding message) and call connection message (ITU-T Q.931 Connect message). None of the above three messages carry the fastStart parameter, and H .323 Terminal enters slow start mode.

[0025] If the H.323 termi...

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Abstract

A method for making video interflow between H.323 TERMINAL AND H.324 terminal includes using video conversion gateway to control H.323 terminal to enter slow starting up mode, sending gateway ability information to calling and called terminals actively by said gateway and obtaining terminal ability information returned back from calling and called terminals, transmitting ability information of gateway and terminal down to terminals of both parties by said gateway and turning on channel between called terminals first then turning on channel between calling terminals for carrying out video interflow .

Description

technical field [0001] The invention relates to the communication field, in particular to a method for video communication between an H.323 terminal and an H.324 terminal. Background technique [0002] With the maturity of 3G technology, the supported functions are becoming more and more perfect. In addition to the challenges of its own technology, 3G commercial networks will also face the problem of interoperability with various other existing networks. Among the existing networks, the development of the packet network is particularly rapid, and the traditional network is gradually being replaced by the new packet network. It is currently a key point to realize the intercommunication between the 3G network and the existing packet network. Multimedia services are a bright spot of 3G, among which video services are the most well-known, currently commercial or trial 3G networks provide video services. At the same time, as a packet network, the H.323 (Packet-based multimedia c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14H04L12/66
Inventor 张军乔志新果云亮罗裕辉靳彤
Owner HUAWEI TECH CO LTD
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