Unable to get inbound calls - Call could not be established, Contact Administrator

[gupmukul]

Hi I have started using 3CX with Voip.ms as SIP provider. I can do outbound calls to US and Canada but cannot get inbound calls. When someone call my DID, it gives a short 2-3 sec call on my 3CX app and web browser and then it gets disconnected with the error message "The call could not be established, Contact Administrator ".
Can someone help me with this matter.

 

[OlegR_3CX]

Hi there.
If you run the call report (go to Reports > Call log), do you see incoming call in there?