Identify when there is a call in progress on the Windows RingCentral phone app ?

We are upgrading the RingCentral phone app across the enterprise using SCCM and are looking for a way to tell if there is a call in progress before uninstalling the old version. We've had some success using the Win32_PerfFormattedData_PerfProc_Process WMI class, but it's a little janky. Is there a better way to tell if there is a softphone call in progress?