Ive been trying to configure this software with my Voip provider but so far with no joy at all, after a second or 2 of "registering" it just falls back to "not registered". The settings i have off my Voip provider are: From their setup instructions it has: In order to do that ive set the "EXTERNAL SERVER" part of the 3cxphone to voiptalk.org Then it states: So my username and password has been entered in the fields in the profile setup. Next it has: So to configure that ive gone to profile > Advance and set "proxy" as nat.voiptalk.org" and "port" to 5065. I've also ticked the "Enable NAT" box After doing that it fails to register, just goes back to "not registered". Ive tried it without "enable NAT" ticked and same problem. Ive deleted the STUN server and same problem. Is there a log file being produced anywhere that i can read to see if/where its failing or can anyone help suggest what im doing wrong in the setup or missing out?