Sip trunk & voip provider

I have installed the pbx and it is working good. The phone transfer, ringing groups and all that.
But… I have 2 voip providers, and i just installed as sip trunk, well, yea it is mabe not the right way, but i did not found general voip provider.
I can ring out with thouse numbers and it is working, but no incoming calls are getting throug. If i dial one of my numbers from my mobile it does not ring.

Any ideas what i can do about it ?

Did you make an inbound route ? Also, it might help if you list the providers you are using.