[Asterisk-Users] Echo Cancellation Feature

[Brent Franks]

> We have three Cisco 7940 SIP phones and 1 POTS phone connected to our
*
> server with  TDM10B fxs card.  Our * server is connected to the pstn
with
> 3
> X100P cards.  We have similar echo problems but only on our SIP
phones.
> We do not have any echo problems with the POTS phone.
> 
> We just purchased a Polycom IP 500 SIP phone to test but I expect
similar
> echo problems.
> 

Don't expect the IP 500's to do anything as you stated, we are using
these now and are having the problem I described earlier with these
phones.

- B