I haven't a clue as to what a STUN server is. Will certainly add to list of stuff to check out.
I barely get a computer on/off without a glitch now and then.
I have just started exploring the wide, wide world of VoIP. I stumbled across the Yate project, downloaded their softphone, and ran into configuration issues libstdn++ in softphone was older than what I have, and hard to find. Maybe not. But for me, it was.
I then went to e164, and found you folks. I downloaded what seemed like a compatible softphone, xlite. And, here I am. I'm now working with the test calls to tweak and lessen echo. I'm running FC5, and it doesn't like me trying to bring up volume control when xlite is open. So, it's a little klutzy.
As soon as I lock in (waiting on e164 call with pin number) enum , I'll work on finding someone to test call.