Mercedes-Benz S-Class Owner's Manual page 449

Handset functions The buttons on the handset have the follow‐
ing functions:
Button Function
1 Answers an incoming call.
R
Transfers an existing call to the
R
handset.
Press briefly twice: redials
R
number
Press briefly: switches the
R
handset between a call on hold
and an active call.
Press and hold: switches to a
R
conference call with the call on
hold and an active call.
2 Rejects an incoming call.
R
Ends an existing call.
R
Multimedia system 447
Button Function
3 Activates voice recognition of
R
the connected mobile phone
(with Hands-Free Profile).
With an active call on the hand‐
R
set: activates hands-free mode
(front)
4 Mutes the handset when there
R
is no active call
Switches off the microphone
R
when a call is active
5 No private information is displayed
in the multimedia system:
Incoming calls and messages
R
are made anonymous
Contacts and messages in the
R
connected mobile phone/SIM
card are not shown