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:
Note
If equipped with Business mobile phone preparation
equipment package or without mobile
phone preparation. ...
Fuses
Replacing fuses
Never attempt to repair a blown fuse and
do not replace a defective fuse with a substitute
of another color or amperage rating; this could
lead to a circuit overload, ultimate ...
Communication
All of the options available to you for mobile
communication with family, friends, business
partners, and service providers are described in
this chapter. ...