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Settling method of optimination code-decode

A solution, codec technology, applied in the direction of digital transmission system, electrical components, error prevention, etc., can solve problems such as insufficient support for codec optimization

Active Publication Date: 2008-11-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In view of the insufficient support for codec optimization in the prior art above, the purpose of the present invention is to provide a solution for optimal codec, which can separate the optimal codec information and codec capability list information in the codec information At the same time, it provides a preferred codec negotiation scheme, which can meet the needs of different preferred codecs in the softswitch call process

Method used

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  • Settling method of optimination code-decode

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Embodiment Construction

[0040] figure 1 It is a schematic diagram of the softswitch communication network, such as figure 1 As shown, the calling side and the called side are connected with media streams under the control of the softswitch.

[0041] figure 2 It is a flow chart of the preferred codec solution of the present invention, such as figure 2 As shown, in the call setup process, the method of the present invention comprises steps:

[0042] S101. The calling side sends codec information to the network side:

[0043] The codec information includes preferred codec information and codec capability list information. In the present invention, when the calling side sends the codec information to the called side through the network side, the preferred codec information and codec capability in the codec information List information is sent separately, where:

[0044] The codec capability list information shall include all codecs supported by the user media gateway;

[0045] The preferred codec...

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Abstract

This invention provides a resolving method for optimizing codes and decodes including: A, a calling side transmits code-decode information to a called side, B, the called side negotiates for the optimization of codes-decodes after receiving the information, C, the called side sends the selected codes-decodes to the network side, D, the network side sends the selected ones to the calling side.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for optimizing coding and decoding in the process of setting up softswitch calls. Background technique [0002] Before the softswitch call is established, the system needs to decide which codec to use to transmit the user's voice, video and other media stream signals. Currently, the codecs supported by the softswitch include G.711A, G.711u, G.729, G.723.1, G.726, T.38, AMR, H.261, H.263, MPEG4, etc. The calling party and the called party in the call need to decide which codec to use through negotiation. The codec negotiation is determined according to the preferred codec configured by the calling party and the called party and the codec type supported by the media gateways of both parties. [0003] In the existing technology, codec and preferred information can be configured in multiple places on the softswitch, such as media gateways, users, trunks, etc., but the softswitc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/58H04L12/54H04L12/66H04L1/00
Inventor 程从陆周伟强相欢马卫军
Owner HUAWEI TECH CO LTD
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