I have a few different versions out there from 1.0.7 to 1.4.0. I have a user that is reporting an echo problem. I am researching how to solve their issue, but everything that I see about echo cancelling deals with PSTN settings. I am a pure-VoIP provider, therefore have no PSTN equipment (PRI or FXO cards) on which I can change settings. How do I go about identifying the true source of the echo and getting rid of it?
It has been quite tricky to nail down as the main customer I’m testing on reports the problem, but I have yet to experience it when I go to their house.