I have been plagued by this problem also. I am unable to place any international call. Although I have been trying for months I still get the notation "Call Restriction 54". Today (12 Jan 2012) I spent nearly 40 minutes being passed from one 611 operator to another trying to get an answer as to why I can not make an international call and what ">>>54" meant. Finally the operator disconnected me without any answer(s). My calls have been primarily to Germany without, of course, any success.
So my question is what next? Why can I not make any international calls?