Mercedes-Benz Audio 20 Operator's Manual page 36

Telephony via the Bluetooth
34
In preparation for making calls via the Blue-
®
tooth interface, you should check the fol-
lowing items on your cell phone (see the cell
phone operating instructions):
Hands-Free Profile
Some displays (e.g. the signal strength
displayed) appear independently of the
supported version of the Hands-Free Pro-
file.
®
Bluetooth
On some cell phones, in addition to Blue-
®
tooth being activated, the device must
also be made "visible" to other devices.
®
Bluetooth
Every Bluetooth
®
device name. This name can be
tooth
freely chosen, but the default name can
be identical for all devices from a given
manufacturer. It is recommended that
the device be given its own name so that
your cell phone can be clearly identified.
Connecting a cell phone
Switch on the cell phone and enter the
PIN, if necessary (see the cell phone op-
erating instructions).
Activate the Bluetooth
cell phone (see the cell phone operating
instructions).
Press the % function button on
Audio20.
+
If the "Bluetooth" function of the Audio
20 system is deactivated, you will see the
following message in the display:
tooth not activated in system set-
tings . Activate the function first
( page 49).
visibility
device name
®
device has a Blue-
®
function on your
Blue-
®
interface
Registering the cell phone (authorizing)
When you use your cell phone in conjunction
with Audio 20 for the first time, you must reg-
ister it (authorization).
You can register more than one cell phone. A
connection is always established to the most
recently connected cell phone within range.
If you authorize a new cell phone, it will be ac-
tivated automatically. You can switch be-
tween the authorized cell phones.
Searching for a cell phone
%Q Phone
Update
.
Audio 20 searches for suitable Blue-
®
devices within range and enters
tooth
them in the telephone list.
Authorized Bluetooth
identified by a telephone-symbol L in
front of the list entry once the telephone
list has been updated. The symbol will be
grayed out if the authorized cell phone is
not located within the Bluetooth
+
The duration of the search procedure de-
pends on the number and type of Blue-
®
tooth telephones. The search may take a
few minutes.
+
If the telephone list is already full, you will
be asked to de-authorize a device
( page 36). If Audio 20 cannot find your
cell phone, external authorization may be
necessary ( page 35).
To authorize: select a cell phone which
has not yet been authorized from the
phone list by pressing the 9 or :
9
and buttons.
or
Select Options
The Input menu for the passcode ap-
pears.
Q Bluetooth Phones
®
telephones will be
®
range.
Q
Authorize .
Q