I'd like to make calls with my partner. We both use IPv4 and NAT. Relaying
via jit.si doesn't work properly so that I would like to use Jitsi without
relaying. I could forward ports in my NAT router like I do for bittorrent
applications but I can't find a setting in Jitsi to configure the port it
uses. Is there any chance to make calls without relaying?