rear view mirror MERCEDES-BENZ R-Class 2007 W251 Comand Manual

128 Telephone*
Important notes
Please read the chapter “Telephone”
first before attempting to operate your
telephone.
Please also read the important notes in
the telephone operating manual.
Always drive with extreme caution
when you operate the telephone
hands-free.
For safety reasons, you should not use
the mobile telephone handset to make
a call while driving the vehicle.
If the signal strength is very weak (dis-
play in the symbol bar of all menus):
Wait until reception improves before
making a call.
Close the windows and reduce all out-
side noise as much as possible when
you use hands-free operation.
Also make sure that the air vents are
not pointed in the direction of the
microphones located in the overhead
control panel near the rear view mirror.
Adjust air vents and/or reduce blower
speed if necessary.
A brief disconnection from the cellular
network is not a malfunction, as this
can occur when the network switches
areas. The phone will automatically try
to sign on to a network again.
If the message Enter Unlock Code
appears, enter the unlock code to en-
able all telephone functions
(
page 133). If you do not do so, only
the emergency call (911) is available.
GSM mobile phone
If the message Please enter PIN-
Code
on the mobile phone appears, en-
ter the PIN-code to enable the telepho-
ne functions (
page 133). If you do
not do so, only the emergency (911)
call is available on the mobile phone.In the following situations, it is not possible
or not yet possible to use the telephone:
The telephone is already unlocked but
is not or not yet registered in the net-
work.
The message
No Serv appears in the
status bar. The telephone will try to re-
gister into an existing network. If the
network is available, the telephone will
be ready for use.
The above message also appears
if the network is no longer available
due to weak signals