Comelit MT COMELIT VSC IP START SERIES - Manual (Page 9)

2.1.3 Windows toolbar
It will show the device name at the toolbar left, gray icon means front
device does not do video recording (green icon means front device is
doing video recording), blue icon means local channel does not do video
recording (red icon means local channel is doing video recording),
means capture, means open or close the sound.
2.1.4 Below toolbar at the video preview windows
The icons at the toolbar respectively are: Set split-screen, Start/Stop polling, Last
group, Next group, Stop all preview/ Polling.