[asterisk-users] Polycom echo problem

[Doug]

At 15:43 6/30/2007, Jordan Novak wrote:
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>I have three polycom 501 that are all hearing echo. The other party 
>sounds fine but you can hear yourself rather well. The volume does 
>help if lowered but that also makes the other party extremely quiet. 
>Is there any way to control the gain of the mic or stop the 
>microphone from picking up so much from the handset. It only happens 
>while you are on the handset.


We had an echo problem a while back.  It was related to
a "sip.cfg" file I got from a tech at Polycom.  In it,
I changed these settings:

        <AEC voice.aec.hs.enable="1"
        <AES voice.aes.hs.enable="1"
        <NS voice.ns.hs.enable="1"

to these:

        <AEC voice.aec.hs.enable="0"
        <AES voice.aes.hs.enable="0"
        <NS voice.ns.hs.enable="0"

and the problem disappeared.  HTH.