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:
DTMF suffix dialing
DTMF suffix dialing can be used for gaining access
to network services or for controlling devices,
e.g., to make a remote inquiry of an answering
machine. The DTMF code is needed for this
purp ...
USB audio interface/mobile phone audio interface
At a glance
It is possible to connect external audio devices.
Operation can be performed via iDrive. The
sound is output on the vehicle loudspeakers.
Connectors for external devices
▷ Conn ...
Radio
FM
AM
Satellite radio
Stored stations
...