Echo Problem on Inbound Calls

It happens only on inbound calls. Voices echo, just my voice which I can hear. The other parts voice doesn't echo and she can't hear her own voice. But I hear my own voice and that is enough for me to not focus on what she says
If I call the same number back (outbound) I don't experience echo.
I use two different clients, Nokia Sip and Linksys 962. The echo happens on both of them, so I don't think that is something to do with my clients.
Anyone knows how can I fix this issue? I use www1

This post has been edited 1 time(s), it was last edited by por on 17.01.2012 at 12:27.

RE: Echo Problem on Inbound Calls

Do you use the same provider for inbound and outbound calls ?
Does the echo happen when you call extension to extension ?

RE: Echo Problem on Inbound Calls

Thank you Telagente...
I use two different providers for incoming and outgoing. That is right. However, I tried to place a call directly to the provider which I use for incoming calls and there isn't any echo there. As soon as I use it through pbxes.org, those nasty echos happen...
And no, it doesn't happen when I call extension to extension (internal)

RE: Echo Problem on Inbound Calls

Maybe also check which codecs are actually being used in each scenario (does the webinfo page of the 962 show the codec used and the delay in real time ?)
Restrict the 962 codec to the one used in your good outbound calls and see if that makes any difference.
Which providers are you using, maybe its a known problem and someone else can help with more suggestions.
Regards