I haven't been following the project for a while, sorry. I've been
focusing on my new (first) job.
I'm glad to hear that Jitsi now supports the more widespread Google
variant of Jingle. (Although I still hope other clients start adopting
standard XSF Jingle.)
So in theory it should now be possible to make calls to one of the
'GTalk compatible' clients for Android. In practice though, it looks
like there's a little more work.
I've tried making a call to/from Crolix Communicator, Talkonaut, Vtok
and Nimbuzz. None of which I got to work. They all seemed to cause
different errors, suggesting that some or all of the clients have not
implemented the protocol correctly. ('call ended by remote', one
client hanging the while the other disconnected, ICE failure despite
both being on the same LAN, persistent calling but not ringing on the
other client, and some others...)
It would be very nice to get at least one of these clients working
with Jitsi, and make Jingle calls from Android. Could you check if
this is partly due to Jitsi's young Gingle implementation? (If you
have Android that is, otherwise I'll collect info for you when I can.)
Thank you to all contributors for the progress!