Gary,
It sounds to me that this issue might relate to the quality of the hardware.
Anyway, to analyze/solve the problem you can do the following:
Install PBXMate. Modify your dial-plan to route conference-bridge calls, to go
to the PBXMate. So the flow will be:Phone->PBXMate (Sip Trunk) ->
Conference Bridge.
Now, for each call, the PBXMate will show you the noise level on both sides,
i.e. the noise level going upstream to the conference bridge and the noise level
going down-stream to the phone.? This should give you an insight to analyze the
problem.
As a bonus, the PBXMate will also clean the noise.
________________________________
From: Gary Carr <garycarr at carolina.net>
To: asterisk-users at lists.digium.com
Sent: Tuesday, September 25, 2012 1:57 PM
Subject: [asterisk-users] white noise on conference
I am trying to track down a white noise problem we
are having in our conference rooms. If there are 3 or 4 users in the conference
the quality is good. After we get more users in the conference we develop a
white noise that gets louder as more users come online. I have tried both meetme
and confbridge. I am running 1.8.16.0 compiled from source.
?
Can anyone provide some insight on where to look or
anything to tweak to resolve this?
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