Hello guys,
Could you help me with this topic? I really need help 
http://lists.jitsi.org/pipermail/users/2015-February/008591.html
[jitsi-users] BUG - Calling to user = call myself?
David_Giron
#1
David_Giron
#2
I could get this solved. Our two computers use the same port 5060 / (secure 5061), and GetOnSIP resolved that when PC1:5060 calls to user PC2:5060, resolving on the same IP got that "I was calling myself".
To fix this: Go to Advanced Settings > SIP > Change ports to random.