Customer said they found that the incoming calls in "Traffic analysis" report actually include all the incoming and outgoing call in IPCC Express.
They showed me the files, which I have uploaded to this page.
From the "CCDR", we can get there are 4 outgoing and 1 incoming calls that day.
But in the "Traffic analysis", it did put 5 calls in incoming calls column.
But from the cisco document, the incoming calls point to all the calls with calltype one in CCDR.
Is it possible be a System bug? Or there are something misconfigured in this system?