All phone calls are stored as a task and are a available in salesforce reports. The default salesforce call center reports can be found in the folder: Call Center Reports.

 

 

 

 

You can create any type of reports like

 

•Incoming calls of a day or week

•Calls where nobody could be reached (call duration is empty or 0)

•Report about the call results

 

If you create a report select report category: Activities and report type: Tasks and Events

 

Example