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 volume
Turn the knob until the desired volume is selected.
The setting is stored for the remote control
currently in use. ...
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Switching on
Press the button
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