CID Problem with local and international prefix


I hope this is a small problem can be fixed fast.

If I call the sip account there is a Follow me on extension to a mobile number. On the mobile I always get +02832 instead of +492832 displayed. In the log files I see there is CALLERID(Number)02832 and CALLERID(name)+492832.

I use context In-Trunk. How can I change this ? Any help ?

Thank you Daniel