Incoming calls never gets through

[albefar]

Hi

I have setup the free edition for a test.
I have installed it and I am using a SIP-provider for all external lines.

Internal calls between extensions works.
External calls from SIP-phone to PSTN network through the VOIP-provider works without problems.

Incoming calls never goes through to the system. Nothing in the system log, and the call is just "cut off".

When I use another SIP-adapter everything works just fine, it is just the 3CX that I'm having problems with

Any help is appreciated.

Regards

Albefar