Basically I remember reading that we can just add up our customers minutes for the month and depending on how our plans are set up, deduct and free minutes and charge accordingly.

My question is, what about the free SIP to SIP calls (did I say that right?)? Will the call log show these calls so that we can also minus the free calls alloted? If not, we're going to have some customer complaints.

How will this work as far as distinguishing regular calls from calls within the system that are free?