See also:

Calls with multiple participants
General information You can switch between calls or connect two calls to a single conference call. These functions must be supported by the mobile phone and service provider. Accepting a call ...

Display
▷ Lines, arrow 1: the system is activated. ▷ Arrows, arrow 2: at least one lane marking was detected and warnings can be issued. ...

Switching on/off manually
Press the button. On: the LED lights up. Off: the LED goes out. ...