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:
Bluetooth audio
At a glance
► Music files on external devices such as audio
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back via Bluetooth.
Use of a mobile phone as an audio source,
refer to page 205.
► ...
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