When adding this dashlet to the dasboard, it is located in the System Health category. The dashlet can be set to a summary period of 1, 6, 12 or 24 hours.
The top portion of the dashlet contains the stream Quality in graphical form and a summary table. Call quality is colour coded using Red, Amber and Green.
Clicking on the will take the user directly to the Call Records grid.
Help(?) for the Microsoft Teams Call Records Grid can be found here...