I've been trying to integrate a proxy/registrar device as a 'peer' to 3CX which connects to a VoIP provider, but am facing outbound call routing configuration issues. VoIP Provider | | 3CX | | Proxy/Registrar | | Registered UA - Inbound calls work by defining DID's in the 3CX which route to specific registered users in the Proxy/Registrar. - The problem I'm having is being able to route a call to the VoIP Provider to any PSTN destination (it's like it has to be a fixed destination???) - The Proxy/Registrar is not able to register itself to the 3CX, only route calls. Anyone tried something similar?