Switching the microphone to mute
When a call is active, the microphone can be muted.
1. "Telephone"
2. "Active calls"
3. 
"Microphone
mute"
A microphone that has been switched to mute is automatically reactivated:
▷ When a new connection is established.
▷ When switching between call parties.
See also:
Signaling a turn
Press the lever beyond the resistance point.
To switch off manually, press the lever to the resistance
point.
Unusually rapid flashing of the indicator lamp indicates
that a turn signal bulb has ...
General information
▷ Instructions for voice activation system
▷ When making a destination entry by voice,
you can change between voice operation
and iDrive.
▷ To have the available spoken instruc ...
Switching on/off manually
Press the button.
On: the LED lights up.
Off: the LED goes out.
...