Voice Port settings to minimize VOIP Echo
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Posted by TexasMirty@gmail.com on May 18, 2006, 11:46 am
Please log in for more thread options phones. Cisco techs have been working with us, but it seems to come down to trial and error. We have a Cisco 2851 router running CME (CallManager Express). These are settings we have tried and the results. Any audio engineers out there care to venture a suggestion? Thank you. Input Gain Output Attenuation Result -3......................3.....................Echo, loud and delayed -4......................4.....................Improved, some echo -5..................... 6.....................Worse, more echo -4......................5.....................Improved, still some echo Current Voice Port Echo settings: In Gain is Set to -4 dB Out Attenuation is Set to 5 dB Echo Cancellation is enabled Echo Cancellation NLP mute is disabled Echo Cancellation NLP threshold is -21 dB Echo Cancel Coverage is set to 64 ms Echo Cancel worst case ERL is set to 6 dB | ||||||||||
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