Shown is a portion of the program dialog, where two CDRs have been selected.

This enables several important applications :-

• Aggregating calls to get a yearly picture.

• Producing a combined bill for both a land-line and a mobile.

• Combining all CDRs from a group of employees for full analysis.

Note that the BT Phone Analyser, which has a limited set of features, can't load multiple CDRs.