I experience quite a few problems trying to establish a mere audio call between Jitsi installations (the same versions on all computers) on the same and different networks, all using gtalk accounts.
The last time I was trying Jitsi was back in 2014 when the last stable was v2.4.x I believe - then at least audio calls were working.
On two Win7 x64 in a local network, when I initiate the call, it works, but when the other end tries to call me, the call is established but neither I can hear the other end nor the other end can hear me, just silence. To repeat - both are in the local network behind one router.
The other issue - the remote user is behind a router with DMZ set to her PC (with static IP of course). I try to call her but she receives error about ICE failed to initialize error or something. There the PC is on Win2008 Server x86. The same setup a year ago, and Jitsi 2.4 on both ends was working (although with stuttering on both ends but at least working).
I reviewed the STUN settings and everything is checked and default (incl. UPnP which is enabled in my router as well, and in the remote router I Thnk), and cannot think what's wrong. I lost hours and days troubleshooting all kind of problems with Jitsi, and this repeats every year when I try the current version.
To repeat - the previous versions were working for the audio calls between the same accounts and machines, almost flawlessly, back in 2014 with 2.4. And I just upgraded to the new version (uninstalling the previous first and the new picked up all existing settings and accounts).
The global hotkeys do not work at all on the remote machine with Win2008 x86 (tried many hotkeys to show/hide the contact list). Again, the older version was working back in 2014 (but had its own problems).
I think I'lll give up, I tried my best to allow Jitsi replace my other IMs (especially skype) just because it (claims to) support audio/video over XMPP/gtalk accounts and all the features but it seems it is still far from flawlessly and reliably fulfil our needs for stability and reliability. Too sad. It seems the Windows version will never see a proper debugging to make sure it works flawlessly at least for its basic functions, unfortunately.
Thanks. I'm still open to solutions to the audio calls and connections problems as a last shot to make it work. I hate skype so much . I want to use jitsi for almost only gtalk accounts - I cannot make others register for almost unknown to them ippi or jit.si accounts.