Try muting all phones then unmuting them one at a time to see if one of those is the culprit. The conference will send anything it receives from a talking member to the other members. If the phone is sending noise (eg because of no/bad echo cancellation) then that could cause it. -Steve On 14 June 2013 14:05, Alexander Haugg <Alexander.Haugg@c4b.de> wrote:
Hi All,****
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since yesterday i make some tests with the mod_conference and it works pretty good, but i have on all conference member phones a background noise. ****
All configuration changes with the energy level, frame size (interval), volume of microphone or listening do no fix the problem.****
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The conference member calls works with PCMA/8000 ptime 20.****
In the wireshark trace i can hearing, the background noise come from the FS to the HiPath 3000.****
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You have any idea for correction options?****
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Thanks****
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