I'm having a problem with Jitsi. I chat with a friend of mine. It works fine for him. He only hears me, and his own voice, as it should be. However, I hear myself, him (as it should be), but I *also hear* my own voice repeated to me from his computer, i.e. my voice that comes out of his speaker and goes into his mic and thus back to me. This is only a "single" echo, i.e. I only hear my voice repeated once -- not multiple times over and over again like a real echo.
Any ideas? I asked my friend to reduce the volume of his computer, but it didn't have an effect.
The strange thing is: Everything works fine when I chat with ANOTHER friend of mine who uses Jitsi. There neither of us hears any echos and everything works great.
Also, Skype works fine in this respect for everybody. Does Skype some echo-cancellation mechanisms that Jitsi doesn't?