With 1Tool you can also create a connection to your telephone system. This allows you to easily log and evaluate customer calls. The call list can be found at Contacts - call log.
In the overall view you can see all calls within the time period you have specified. For example, you can view all calls for a day, week or month. Here you can also look at the calls of individual contacts.
Under the area "Calls", you also have the option between saved or new contacts to filter.