does anyone here was sucessfully setup the billing system until display the cost of call usage? bcause in my server, the billing didn't display anything. i was set the rate and also thick the trunk (Zap/g1) but it still didn't display anything even in the CDR Report was display the call usage, duration, source, destination etc. is ther anyone know how to setup the billing system correctly. i was try to search in google, but i can't found any clue to help me.