Hi, I am new so hope this is the correct place to ask about the fault I have. I have a company VPN setup from our Ubiquiti USG based in one office then a remote-user VPN connecting our secondary server located in another location. Everything seems to be working fine in that I can ping the server and get at resources hosted on it etc. I have been setting up 3CX on it which appeared to be working fine in that phones registered etc. However when I try and make a call on any phone to an extension within the PBX I get an error saying "Forbidden". The server runs on a domain name.. I was just wondering if anyone has come across this before and has a fix? Thanks in advanced!