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Method and device for adjusting telephone echo in VoIP telephone system

A telephone system and telephone technology, applied in the field of VoIP communication, can solve the problems of echo reflection, affecting the use effect of IP telephone, etc., and achieve the effect of reducing echo

Inactive Publication Date: 2014-07-02
NANNING FUGUI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the echo generated by the mismatch between the terminal impedance and the input impedance of the access setting conversion circuit, and in the VoIP network, the delay caused by the IP network and the access device will cause the echo to be reflected back from the far end, thus affecting the transmission Effects of using IP phones in VoIP network

Method used

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  • Method and device for adjusting telephone echo in VoIP telephone system
  • Method and device for adjusting telephone echo in VoIP telephone system
  • Method and device for adjusting telephone echo in VoIP telephone system

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Embodiment Construction

[0024] The method for reducing VoIP telephone echo described in the present invention is that the user inputs a predetermined DTMF (Dual Tone Multi Frequency, Multi-Tone Multi-Frequency) telephone key value on the VoIP telephone set at the local end to send an adjustment VoIP voice loop to the other party talking with it. The echo control command, the echo adjustment device at the opposite end (which can be a voice router or a voice gateway) will reduce and adjust the echo in the VoIP telephone loop when receiving the control command to adjust the echo.

[0025] see figure 1 , the VoIP telephone system provided by the present invention includes: a local terminal phone A, a local first voice router 100 connected to the local terminal phone A, a second voice router 200 at the opposite end, and a second voice router 200 at the opposite end. The connected peer terminal phone B. Wherein, the first voice router 100 at the local end and the second voice router 200 at the peer end pe...

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PUM

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Abstract

The invention relates to a method and device for adjusting a telephone echo in a VoIP telephone system. The method comprises the following steps: receiving an input signal which is input by a second terminal telephone user and is used for adjusting the VoIP telephone echo; sending an RTP message package for test to a second voice router, receiving an RTP message package corresponding to the RTP message package for test and transmitted back by a VoIP voice loop and calculating the time when one RTP message package is transmitted unidirectionally in the VoIP voice loop; storing the RTP message package sent by a first voice router and receiving other RTP message package received by the first voice router; comparing the received RTP message package and the sent RTP message package so as to judge whether the two RTP message packages are same; and when the received RTP message package and the sent RTP message package are same, deleting the received RTP message package which is the same with the sent RTP message package.

Description

technical field [0001] The invention relates to the technical field of VoIP communication, in particular to a method and a device capable of reducing the echo in the VoIP speech loop. Background technique [0002] In recent years, with the development of technology and market demand, telecom operators have established many VoIP (Voice over Internet Protocol) networks. Compared with PSTN (Public Switched Telephone Network, public switched telephone network), VoIP network has the advantages of flexible networking and low cost; however, VoIP network is affected by its own defects such as network delay, signal jitter and high packet loss rate. The transmitted voice quality is worse than PSTN network. In addition, some problems that could be ignored in PSTN network become prominent in VoIP network. For example, the echo generated by the mismatch between the terminal impedance and the input impedance of the access setting conversion circuit, and in the VoIP network, the delay ca...

Claims

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Application Information

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IPC IPC(8): H04M9/08H04M7/00
Inventor 萧崇佑
Owner NANNING FUGUI PRECISION IND CO LTD