Greetings. I am trying to setup a Broadvoice account for use with 3CX. I am using the default stun.3cx.com stun server in my configuration and I am seeing the following errors when attempting to register: 16:51:00.040 ClientRegs:nFailure Registration of sip:email@example.com has failed; reason=Service Unavailable 16:50:59.890 ExtLine::Register_ Send registration for "8565284955"<sip:firstname.lastname@example.org> 16:50:59.890 ExtLine::Register_ Use Specified IP for device line registration DN='1000' device='Broadvioce' 16:50:59.058 CallMgr::failResolveExtIp Failed to resolve external IP! 16:50:59.058 StunClient:rocess STUN failed to resolve external IP using server 220.127.116.11 16:50:56.053 StunClient:rocess Send initial STUN request to 18.104.22.168 The server is 1 to 1 mapped to the external address. I have tried manually specifying the external ip address of my server in the "Which IP to use in 'Contact' field for registration" field and I still receive the same error. I have ports 3478, 5060 and 9000-9003 udp open inbound to the server and all ports are permitted to pass outbound from the server. Where am I going wrong in my configuration? Thanks in advance!