Method and system for video consultation
A video and video terminal technology, applied in the field of communication, can solve the problems of complex installation, deployment and maintenance, poor system scalability, and poor reliability, and achieve good system scalability and ease of use, simple network element structure, and high reliability Effect
Active Publication Date: 2009-12-02
广州广哈通信股份有限公司
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Problems solved by technology
[0004] IP video negotiation requires a video server, and may also require a firewall. The cost is high, and the installation, deployment, and maintenance are complicated. In addition, if the video server fails or is attacked, it will affect the performance of the video negotiation or cause the video negotiation to fail, resulting in the failure of the video to be established. poor reliability
[0005] ISDN D channel video negotiation needs to modify the ISDN Q931 protocol. Only related devices including terminal equipment and network equipment modify the ISDN Q931 protocol can support the video negotiation function, which leads to poor system scalability and usability, and complicated maintenance.
[0006] To sum up, the video negotiation in the prior art needs to be completed on the signaling channel, which has the disadvantages of high operating cost, complicated installation and maintenance, poor security, poor reliability and system scalability
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0037] A schematic flowchart of an embodiment of a video negotiation method provided by the present invention, as shown in figure 1 shown.
[0038] A video negotiation method provided in Embodiment 1 of the present invention includes the following specific steps:
[0039] 101. At least two video terminals establish a voice call on a voice channel;
[0040] 102. Through the processing and control of the central processing unit and the field programmable gate array...
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The invention discloses a method for video consultation, which comprises the following steps: establishing voice conversation in a voice channel through at least two video terminals; and through the processing and control of a central processing unit and a field programmable gate array, dividing a part of bandwidth channel from the voice channel to send and receive video consultation information. Under the condition of not changing any requirement on a circuit switching network of digital relay networking, the method can divide a part of bandwidth on the voice channel established by two video parties, so that the video consultation information can be transparently transmitted in the circuit switching network so as to realize the video consultation function of the two video parties; and the method has the advantages of low cost, convenient maintenance and high reliability. The invention also discloses a system for the video consultation.
Description
technical field [0001] The present invention relates to the technical field of communication, in particular to a video negotiation method and system. Background technique [0002] Video negotiation is a process of implementing video communication, through which the endpoint sending video can determine the video capability and related information of the receiving endpoint before sending the video stream. Video negotiation is generally completed on the signaling channel. [0003] At present, there are more and more video terminals on the market, and their functions are getting stronger and stronger, mainly including ISDN (Integrated Services Digital Network) video terminals and IP video terminals. The ISDN video terminal uses the ISDN D channel as the signaling channel, and uses Q931 as the basic protocol to realize the video negotiation function. The IP video terminal uses the IP network as the signaling channel, and uses the TCP / IP protocol as the basic protocol to realize...
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IPC IPC(8): H04M7/12H04N7/14H04L29/06
Inventor 张聚明梁建国张小莹
Owner 广州广哈通信股份有限公司