VOIP self-adaptation speech coding method and system and SIP server

A voice coding and server technology, applied in voice analysis, transmission systems, instruments, etc., can solve problems such as choosing a coding format and not being able to realize high-quality voice call services

Active Publication Date: 2013-11-27
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Claims
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Problems solved by technology

[0014] The current VOIP telephone system cannot make dynamic adjustments to different bandwidth requirements according to different encoding formats, that is to say, it is impossible to select the appropriate encoding format according to the situation of the SIP client, so that it cannot provide users with high-quality voice calls Serve

Method used

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  • VOIP self-adaptation speech coding method and system and SIP server
  • VOIP self-adaptation speech coding method and system and SIP server
  • VOIP self-adaptation speech coding method and system and SIP server

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Embodiment Construction

[0058] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0059] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0060] image 3 It is a schematic flow chart of the VOIP adaptive speech coding method of the present invention, as image 3 shown, including the following steps:

[0061] Step 300: Detect available network bandwidth.

[0062] In this step, when the us...

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PUM

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Abstract

The invention discloses a VOIP self-adaptation speech coding method and system and an SIP server. According to the VOIP self-adaptation speech coding method, the VOIP self-adaptation speech coding scheme comprises the steps that network available bandwidth is detected, the speech coding sequence is sequenced according to the detected network available bandwidth of the opposite terminal, the sequence is sent to the opposite terminal, and then both sides of a conversation select the respectively supported coding formats for carrying out speech coding on RTP streams according to the received speech coding sequence. According to the VOIP self-adaptation speech coding method, the SIP server only inquires the network available bandwidth of the opposite terminal of the initiator of SIP messages, after an SDP package modified according to the network available bandwidth of the opposite terminal of the SIP client side reaches the opposite terminal, the speech code suitable for the current network condition of the opposite terminal is selected preferentially, and therefore the optimal speech coding formats under the condition of the respective current network available bandwidth are used by the both sides of the SIP client side, the requirement for different kinds of bandwidth by different coding formats is met, and high-quality voice communication service is provided for users.

Description

technical field [0001] The invention relates to VOIP voice technology, in particular to a VOIP self-adaptive voice coding method, system and SIP server. Background technique [0002] At present, with the rapid growth of the backbone network rate and the continuous improvement of the access network rate, the Internet is widely used, and the business on the Internet is also moving from narrowband to broadband, from non-real-time to real-time. Voice over Internet (VOIP, Voice over Internet) Protocol) business is one of the important business. [0003] VoIP is a technology that achieves the purpose of voice communication on the IP network by digitally encoding the voice signal, compressing it into a frame, and then converting it into an IP data packet for transmission on the IP network. The biggest advantage of VOIP is that it can make extensive use of the Internet and the global IP interconnection environment, and provide services such as voice, fax, video and data at a very l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06G10L19/005
Inventor 李浩罗云彬王志军
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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