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:
Adjusting the height: electrical
The head restraints on the left and right rear
passenger seats extend automatically
whenever a passenger in the rear seat fastens
his or her safety belt.
In addition, the height of the head r ...
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, ...
Deleting the button assignments
1. Press buttons 1 and 8 simultaneously for
approx. five seconds.
2. "OK" ...