[Asterisk-Users] Huge Echo

[Marek Zachara]

On Friday 09 of September 2005 13:14, Andreas Sikkema wrote:
> asterisk-users-bounces at lists.digium.com wrote:
> > In the following setup:
> > call coming from a pstn line -> into FXO card -> asterisk -> SIP
> > phone
> >
> > i get an incredible loud echo in the SIP phone (about 0,5-1s)
> > (everything i speak into SIP phone microphone i hear in its
> > speaker). The person calling from PSTN is not getting any echo.
>
> Make sure you're not playing the recorded sound from your
> microphone back to your loudspeakers.

How could I have done that? I'm not recording any sound (at least nothing i'm 
aware of). The echo doesn't happen when the call is incoming from SIP 
provider (instead of PSTN) - so i assume the problem is related to the analog 
line. The SIP phone is stand-alone AT-320

Marek