provided by Star2Billing S.L.

Hi every one I am not sure if any one did that already what I am trying to accomplish

I want do the billing like this 30/120/120 if this is possible

30 s when a user call if they hang up before 30 sec they get charge for 30 sec after it pass 30 sec I want user to get charge 120 sec let say user talked for 121 sec I want user to get charge for 240 sec instead of 150 can some one advice hope i cleared enough

You'll need to edit a2billing.conf to enable 'advanced_mode = yes', and then you should be able to bill exactly as you desire using initblock, billingblock and step charges.

THank you so much.. for the hint do you have any other doc that i can read and understand those block thank you

The manual does seem to be lacking in this area, offering just a single sentence mentioning the existance of step charges.
I'm sorry, but it appears that after I suggested you use this feature (of which I have no experience myself) there may be unresolved problems with it. I don't have time to look at the code currently, and as I don't use this feature this will be a very low priority on my TODO list, but unless someone else wants to jump in with a solution this will have to wait until I'm less busy, which will hopefully be sometime in the next few months.