[Asterisk-Users] Local Echo

[Noah Silverman]

I have a strange echo problem.

When speaking on the phone with someone, I hear MY OWN voice with a
sever echo.  The other party sounds perfect, and they can hear me
perfectly.  It is as if only the sidetone has an echo.

I'm running * on a dedicated box, small LAN, and am using 4 FXO cards to
 connect the box to PTSN lines.  My phones are Polycom IP500 SIP phones.

The only echo cancellation stuff that I can find relates to cancelling
echo between my system and the PTSN lines.  Since the call is "perfect",
I don't see how this would apply.

Any suggestions??

-N