[asterisk-users] Asterisk 1.4 CDR vs VoIP Innovations CDR

[Adam Moffett]

When I compare my total minutes on the bill from VoIP Innovations, to 
the number from our CDRs, I'm finding a smalish (3-4%) discrepancy in 
the count of minutes.  I'm wondering why it's there.

Are there different methods of counting the billable start or end point 
of a phone call?

If it matters, I'm counting more termination minutes than they are and 
they're counting more origination minutes than I am.