Patent ID: 7769651

Claim:
A method of processing billing data in a billing data processing system having a data processor, a memory for storing data, and an interface coupled to a first billing system, the method comprising: extracting a first set of rated aggregated billing data from the first billing system at a first point within the first billing system during a billing period; storing the first set of rated aggregated billing data in the memory; extracting a second set of rated aggregated billing data from the first billing system at a second point within the first billing system during the billing period, wherein the first point and the second point are different data extraction points in the first billing system; processing the first set of rated aggregated billing data and the second set of rated aggregated billing data; determining a billing warning event based on processing the first set of rated aggregated billing data and the second set of rated aggregated billing data; providing notification of the billing warning event; and initiating a billing audit on a subset of bills within a billing round in response to the billing warning event.