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:
Calls with multiple parties
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 ...
What to do if...
Only a black screen is visible.
Switch on the system.
There are no options available on the screen.
Replace remote control batteries.
Radio stations or TV channels are grayed out
and c ...
Vehicle equipment
All standard, country-specific and optional
equipment that is offered in the model series is
described in this chapter. Therefore, equipment
is also described that is not available in a vehicle, ...