This article will provide you an overview of the Calls report and it's functionality: 

First navigate to the "Statistics and Reports" section from the left and click on "Calls" from the drop down menu:

From here you will be able to review statistical information for the calls made by your agents for a selected time period:

On the top you can select which columns to be shown in the table:

From the "Filters by" option you can filter for only calls with specific lead statuses (includes custom made ones):

You can also specify the period/time for the report as well manually search throughout the report:

You can also select which columns to be displayed from the top right as well export the report as a Excel, CSV and PDF file. Additionally have the option to directly copy and print it:

By clicking on the "Show Logs" under the action column next to a specific status you will be able to view all of the calls with that specific status:

In the logs section you will be able to see all the calls with that specific status and details and be able to review the call if there is a recording.