The status icon displays the current system status of SmartCallMonitor. Additionally it provides access to the main function of SmartCallMonitor if the system runs in the system tray as a background process. You can find the status icon in the lower right corner in the system tray.
It's color informs you about the current status of SmartCallMonitor:
Green means "Active",
red means "Stopped" and
yellow means "Busy".
The status icon will vanish from your system tray if you exit SmartCallMonitor completely.