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:
Programmable memory buttons
General information
The Owner's Manual can be stored on the programmable
memory buttons and called up directly.
Storing
1. "Owner's Manual" Select via the iDrive.
2. Press the desired ...
Air volume, manual
You can vary the air volume by
pressing
on the corresponding side. You can reactivate
the automatic mode for the air flow rate
with the AUTO button. ...
Text messages
Text messages at the upper edge of the Control
Display explain the meaning of the displayed indicator
and warning lamps. ...