Error in the call to mobile numbers

Invitation to the SIP provider to get calls to fixed numbers in neighboring Croatia, but we do not go calls to mobile phone numbers. I get the answer that call disabled and to re-key number and press the # key, and noticing the a2billing options that we wrote congestion. 6 months ago I had the same problem that I solved that I added in the billing option loan but now it does not pass.
What is the problem?

The SIP provider is the problem.

Even if they weren’t you haven’t provided enough information, as Asterisk has no idea whether a number beyond a SIP peer is mobile, fixed, or interplanetary. Any distinction being made before the ITSP is due to a2billing or code you have provided.

Note this a discussion forum. Use Support forums when you need help.

Correct,my Sip provider is repair error and mobil call now is OK. thnx