BMW M5 Owner's Manual page 182

Adjusting volume
Turn the knob during a call to select the desired
volume.
This volume for the hands-free system is main-
tained, even if the other audio sources are set to
minimum volume.
You can also adjust the volume with buttons on
the steering wheel, refer to page 11.
The setting is stored for the remote control cur-
rently in use.
Operation via iDrive
You can operate the following functions via
iDrive:
>
Accepting/refusing a call
> Dialing phone numbers
> Dialing phone numbers from the phone
book
> Dialing stored phone numbers, e.g. from the
list of accepted calls.
> Ending a call
When the ignition and radio readiness are
switched off, e.g. after removing the remote
control from the ignition lock, you can continue
an ongoing call via the hands-free system for no
more than 25 minutes.
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Speech quality
If the person you are talking to cannot under-
stand you well, this may be due to excessively
loud background noises. The full mobile phone
preparation package can compensate for these
noises to a certain degree. To optimize the
speech quality during a call, we recommend
that you:
> Reduce background noises, e.g. by closing
the windows, reducing the air volume of the
automatic climate control or pointing the
opened front vent outlets downward
>
Reduce volume of hands-free system
Requirements
> The logon data of the mobile phone are
stored in the vehicle and the mobile phone
is ready to operate.
> The engine is running or the ignition is
switched on.
> The mobile phone is detected by the vehi-
cle.
Opening Communication
You operate many of the functions described in
the following via the "Communication" menu.
iDrive, for operating principle refer to page 16.
1. Press the button to open the start
menu.
2. Move the controller forward to open "Com-
munication".