The term 'Call-Center' can summarize different company types:
No matter what type a call-center belongs to, the offered services must be charged in a causal way - reflecting the customers use. Depending on the service type, one or more components have the price setting role. The service type, time, duration, caller and called number must be taken into account, in some case the dial up number as well.
Nazca.Billing supports such complex billing structures by offering CDR-import interfaces that work with CDR-formats of any telephony system or