Hi If all you wish to do is to generate bills AFTER the call has completed, thats easily done, in your acc table you will have the start - stop records ( i.e INVITE, BYE) for each call. You then need to work out the length of the call , and then multiple it by the cost. Now heres where it gets complicated, lets say you have different call costs for each prefix, i.e country code, and on top of that you have peak/off-peak times for each call, and then just to add little bit more, u decide that customers of Type I (i.e residential) get charged less than those of TYPE II (corporates). This is all best done via a DB Assuming you dont have TYPE I/II customers all you need to do, is to assign a call cost to each segment of the day, and to each prefix, then get the time of the call, see what segment it falls into (or spans) and then do the maths for the call cost. I know this is a little oversimplified, but you can build on it slowly, I would start with assigning a cost to each country code..then each prefix within a country, and go from there Iqbal On 4/26/2005, "Felipe Martins" <fmartins(a)mundivox.com> wrote: