Hi Folks, I have a 3cx server running with public IP address and port 5060 open to the world. I have a SJLabs softphone that registers fine as 'calls through SIP proxy' profile, but just can't get any return traffic (i.e. voice goes out, but no return) unless I am connected direct via VPN. Am I missing something here? Any tips, comments, advice or insults more than appreciated! ;-) Cheers.