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Method and equipment for transmitting information in calling process

A technology for message transmission and call process, applied in the field of message transmission, can solve the problems of consuming SIP server DSP resources, DSP resources shortage, etc., and achieve the effect of saving DSP resources and reducing resource occupation

Active Publication Date: 2014-06-25
XINHUASAN INFORMATION TECH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

[0009] However, in the above process, due to the different encoding and decoding methods of the RTP messages exchanged between VGA and VGB, the SIP server needs to participate in the encoding and decoding conversion process to perform encoding and decoding conversion on the RTP messages of VGA and VGB, while The encoding and decoding process needs to be completed by DSP (Digital Signal Processing, digital signal processing), which consumes the DSP resources of the SIP server; and if there are too many calls, the DSP resources will be strained

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  • Method and equipment for transmitting information in calling process
  • Method and equipment for transmitting information in calling process
  • Method and equipment for transmitting information in calling process

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Embodiment Construction

[0047] The present invention proposes a message transmission method during a call, which is applied to a system including a SIP server, a calling voice gateway and a called voice gateway, to figure 1 For reference to the schematic diagram of the network model, the calling voice gateway is VGA, and the called voice gateway is VGB (or the calling voice gateway is VGB, and the called voice gateway is VGA). Such as figure 2 As shown, the method includes the following steps:

[0048] In step 201, the SIP server receives a first message (such as an Invite message) from the VGA carrying the codec supported by the VGA.

[0049] Specifically, during the negotiation process between VGA and VGB, VGA will send an Invite message to the SIP server. The codec methods supported by VGA only include G723 and G726, and the codec methods supported by the SIP server include G729, G723, G726, and G711. etc., the codec modes supported by VGB only include G729 and G723 as an example, and the Invit...

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Abstract

The invention discloses a method and equipment for transmitting information in a calling process. The method comprises the following steps: an SIP (Session Initiation Protocol) server receives a first message from a calling voice gateway and sends a second message in a coding and decoding manner supported by the calling voice gateway to a called voice gateway; the SIP server receives a third message representing for passing the consultation from the called voice gateway and sends a fourth massage representing for passing the consultation to the calling voice gateway; and the first coding and decoding manner commonly supported by the called voice gateway and the calling voice gateway is carried in the third message and the fourth message. In the invention, the DSP (Digital Signal Processing) resource of the SIP server can be saved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for message transmission during a call. Background technique [0002] Such as figure 1 As shown, it is a schematic diagram of a current SIP (Session Initiation Protocol, Session Initiation Protocol) application network. Two voice gateways (calling voice gateway and called voice gateway) complete the process of call establishment and teardown through the SIP server. [0003] Generally, the SIP server does not participate in the media information negotiation process between the calling voice gateway and the called voice gateway. The SIP server only plays the role of registration and call agent. The message is completely transparently transmitted. When the calling voice gateway and the called voice gateway have the same codec capability, the calling voice gateway and the called voice gateway can realize intercommunication. [0004] However, when the call...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/58H04L29/06
Inventor 田小强陈捷
Owner XINHUASAN INFORMATION TECH CO LTD
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