Make sure you
are not behind a Symmetric NAT. If so, you're
dead. STUN does not work with Symmetric NAT.
If a UA is behind Symmetric NAT, and
UA use STUN, and
SER have [RTP/Media]Proxy to handle Symmetric NAT,
this UA should be fine, right?
Yes, but, if UA is behind symmetric NAT, I would not
configure STUN to it. I'd just led mediaproxy solve the problem.
But if you have 100 clients,
it would be hard to put all clients in one group.