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Conference rate matching method for multi-point conference system in pure ISDN network

A multi-point conference and rate matching technology, applied in the direction of video conference system, transmission system, data exchange network, etc., can solve the problems of processing complexity, inconvenient user operation, lack of flexibility of the system, etc., to achieve matching and convenient operation Effect

Inactive Publication Date: 2010-09-08
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the MCU needs to invite the second terminal 2 to join the conference at this time, or the second terminal 2 needs to join the conference, according to the H320 protocol framework, it is necessary to hang up the first terminal 1 and call the first terminal 1 again using a different conference rate. The complexity of the processing is caused to the user, the system lacks flexibility, and the user operation is very inconvenient

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  • Conference rate matching method for multi-point conference system in pure ISDN network
  • Conference rate matching method for multi-point conference system in pure ISDN network
  • Conference rate matching method for multi-point conference system in pure ISDN network

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Embodiment Construction

[0027] The technical solution of the present invention will be described in more detail below with reference to the drawings and embodiments.

[0028] As shown in Figure 3, it is the upper-end process of the ISDN terminal in the prior art:

[0029] A. The application layer of the protocol stack initiates a call to the main channel B.

[0030] B. The protocol stack management layer calls the Q931 and Q921 protocol units according to the existing resources.

[0031] C. The network side responds that the current B channel call is successful.

[0032] D. Carry out the ISO13871 binding process.

[0033] E. Prepare to call the additional B channel according to the parameters of the ISO13871 binding negotiation.

[0034] F. Similar to the call of the main channel B, the binding process of the additional B channel is performed to complete the binding.

[0035] G. Perform the H221 frame search process, and perform H242 conference capability exchange and mode switching after the fra...

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Abstract

The invention discloses a conference rate matching method for a multipoint conference system based on a pure integrated service digital network ISDN, which comprises the steps that when a conference is added with other terminals, if the conference rate of a terminal to be at a conference can not reach the existing conference rate of a terminal at the conference after being at the conference, an MCU carries out speed reduction processing to the terminal at the conference. By adopting the proposal of the invention, when the terminal to be at a conference can reach a conference rate smaller thanthe terminal at the conference, the rate of the terminal at the conference can be reduced without hanging up the terminal at the conference, thus realizing the matching of conference rate and being convenient for the operation of users.

Description

technical field [0001] The invention relates to a signaling and data processing method in data communication, in particular to a conference rate matching method for a multipoint conference system in a pure ISDN (Integrated Services Digital Network) network. Background technique [0002] A basic multi-point conference system—such as a multi-point video conference system should be composed of MCU, conference terminal, and transmission network. Conference TV terminals based on pure ISDN network are connected by ISDN link lines, and their signals are connected to MCU or other ISDN terminals through ISDN lines. [0003] In the pure ISDN network video conferencing system, the communication between the terminal and the terminal or between the terminal and the MCU is directly connected through the ISDN line. The main protocols used are: H.221, H.242, ISO13871. The H.221 protocol text stipulates that the entire 64kbit / s ~ 1920kbit / s transmission channel is dynamically subdivided in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/18H04L12/56H04M3/56H04Q11/04H04N7/15
Inventor 杨龙
Owner ZTE CORP