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Telephone basic menu (Bluetooth
®
interface)
X Press the 002Bbutton.
If the connected telephone is ready for use,
the following display appears (example): 0043
Telephone status
0044 Signal strength of mobile phone network
Ä
0087 Receiver icon 0071or0075
0085 To display call lists
0083 Character bar
0084 Bluetooth ®
name of the currently con-
nected mobile phone
006B To display the Audio 20 phone book
X Press 002B.
When the connected mobile phone is ready
for use, the telephone basic menu appears.
i Bars 0044show the current signal strength
of the mobile phone network. If all bars are
filled, you have optimum reception.
If no bars are shown, reception is either
very poor or there is none at all.
The receiver symbol shows whether a call
is active/being connected 0075or not 0071.
Text message display in the telephone
basic menu The
Text Message Text Message menu item is only availa-
ble if the Bluetooth ®
phone supports the MAP
Bluetooth ®
profile ( Message AccessProfile).
The downloading of text messages from the
Bluetooth ®
phone must have been com- pleted. The menu item is otherwise grayed
out.
If you have an unread text message, the
0083
mail symbol is displayed. The symbol disap-
pears once you have read the text message.
The ú mail symbol is displayed as soon as
the text message memory is full. The symbol
disappears once you delete at least one text
message.
You can deactivate the automatic download
function for text messages stored in the
phone (Y page 55).
You can choose not to display the stored text
messages by activating the "Hide data" func-
tion (Y page 55). Reception and transmission volume
Once the mobile phone has been authorized,
you can optimize the transmission and recep-
tion volume settings. Find information on the
optimal setting for your mobile phone on the
Internet at
http://www.mbusa-mobile.com. Or call
the Mercedes-Benz Customer Assistance
Center at 1-800-FOR-MERCedes
(1-800-367-6372) (for the USA) or Customer
Relations at 1-800-387-010 0(for Canada).
i Incorrect settings may have an impact on
the quality of calls.
X Press 002B.
X Select Phone
Phone from the telephone basic
menu by turning 00790052007Athe controller and
press 0098to confirm.
X Select Connect Phones Connect Phones and press0098to
confirm.
X Select an authorized mobile phone from
the list by turning 00790052007Athe controller.
X Select the list symbol to the right of the
entry by sliding 00520096the controller and
press 0098to confirm.
X Select Reception Volume
Reception Volume orTransmis‐ Transmis‐
sion Volume
sion Volume and press0098to confirm. 48
Reception and transmission volumeTelephone

on the line can hear nothing from your vehi-
cle.
X To switch on: selectMic On
Mic On and press
0098 to confirm.
The message: The microphone is on
The microphone is on
appears briefly.
The 004Dsymbol disappears.
Sending DTMF tones i
This function is not supported by all
mobile phones.
Answering machines or other devices can be
controlled by DTMF tones, e.g. for remote
query functions.
X During an active call, press the respective
keys on the number keypad.
Every character selected will be transmit-
ted immediately.
or
X To select a character: slide009500520096or turn
00790052007Athe controller.
X To confirm your selection: press0098the
controller.
X To send a phone book entry as a DTMF
sequence: selectName
Name by turning 00790052007A
the controller and press 0098to confirm.
X Select the desired phone book entry and
press 0098to confirm.
The entry is sent as a DTMF character
string.
X To return to the call display: select
Back
Back and press 0098to confirm. Using the phone book
Introduction
If the mobile phone supports downloading
contacts via PBAP (Phone Book Access Pro-
file), the mobile phone book will automatically
download to the Audio 20 system when con-
nected. You can also import contacts to the
phone book from a USB device or use Blue-
tooth ®
to receive vCards. i
The phone book can store between 1,000
and 2,000 entries, depending on the size of
the entries. Imported vCards are given pri-
ority when storing and overwrite existing
PBAP contacts if the memory is full.
i Imported contacts are stored perma-
nently in the phone book. For this reason,
you should delete the call lists before sell-
ing the vehicle. Importing external data
Receiving vCards (via the Bluetooth ®
interface) Received vCards are identified by the
00BA
symbol.
You can import vCards from external Blue-
tooth ®
-capable phones into the address
book. Please bear the following in mind:
R Bluetooth ®
must be active on Audio 20 and
on the external Bluetooth ®
-capable tele-
phone; see (Y page 33) and the operating
instructions of the respective mobile
phone.
R the external Bluetooth ®
phone must be
able to send vCards via Bluetooth ®
(see the
operating instructions of the respective
mobile phone).
i If you switch to another operating mode
during vCard reception (e.g. if you press the
002A button), vCard reception is canceled.
X Select Phone
Phone using the controller (slide
0052 0064,009500520096or turn 00790052007A) and press 0098to
confirm. 52
Using the phone bookTelephone

X
Select Download Contacts
Download Contacts and press0098
to confirm.
A submenu is displayed.
X Select Receive Business Card(s) Receive Business Card(s) and
press 0098to confirm.
The Bluetooth ®
connection between
Audio 20 and your active mobile phone is
interrupted. Audio 20 is now ready to
receive vCards from other mobile phones.
X Start data transfer on the external Blue-
tooth ®
phone (see the operating instruc-
tions of the respective mobile phone).
The data on the vCards is automatically
transferred to the address book. The num-
ber of vCards received is displayed.
X To cancel reception: selectBack
Back and
press 0098to confirm or switch to a different
operating mode.
Importing from a USB device Imported USB device entries are marked with
the 00BB symbol.
The following conditions must be fulfilled in
order to import vCards:
R vCards (vcf files) can be placed in folders.
Audio 20 allows you to select the relevant
folders directly.
R vCards must have the file extension "vcf".
i A vCard file can also contain several
vCards.
Audio 20 supports vCards in versions 2.1
and 3.0. X
Select Phone
Phone from the telephone basic
menu by sliding 00520064and turning 00790052007Athe
controller and press 0098to confirm.
X Select Import Contacts Import Contacts and press0098to
confirm.
A menu appears.
X Select From USB Device From USB Device from the menu
by turning 00790052007Athe controller and press
0098 to confirm.
X Select Add
AddorOverwrite
Overwrite and press0098to
confirm.
Add Add imports the entries from the USB
device to the phone book.
Overwrite Overwrite imports the entries from the
USB device and overwrites all entries in the
phone book marked with the 00BBsym-
bols. The previous entries are then no lon-
ger available.
After the contact data has been imported
successfully, you will see a message to this
effect. The corresponding telephone basic
menu appears.
i You can select the Overwrite Overwritemenu item
if the phone book already contains corre-
sponding entries. A message notifies you if
the phone book is full. Calling up the phone book
Overview X
Select Name
Name using the controller (slide 00520064,
009500520096 or turn 00790052007A) and press 0098to con-
firm.
If the phone book contains entries, these will
be displayed in alphabetical order. The char-
acter bar will be shown in the lower section
and is active.
The character bar serves to reduce the num-
ber of entries needed. Using the phone book
53Telephone Z

X
To switch from the character bar to the
list: slide 00520097the controller or press 0098
repeatedly until the character bar disap-
pears.
X To switch from the list to the character
bar: press the 003Dbutton on the control-
ler.
Symbol overview Symbol Explanation
00D7
Contact imported from a
mobile phone that supports
PBAP
00BB
Entry imported from a USB
device
00BA
Entry imported via the Blue-
tooth
®
interface Selecting an entry using the character
bar Selecting a character from the character
bar
X
First switch to the character bar when the
list appears.
You determine the first letter of the entry you
are looking for with the first character you
enter.
X Slide 009500520096or turn 00790052007Athe controller.
X To confirm your selection: press0098the
controller. The first entry in the list that starts with the
letter selected is highlighted. If there are sim-
ilar entries, the next different character is
shown. For example, with entries such as
Hilden
Hilden andHilgers Hilgers, the beginnings of the
names are similar. In this case, you will be
offered a choice between D Dand G
G.
X Select the characters of the entry you are
searching for one by one and press 0098to
confirm.
As soon as the selection is unambiguous,
Audio 20 automatically switches to the list.
X To complete the search: switch from the
character bar to the list.
The first list entry is automatically high-
lighted.
Changing the language of the character
bar
X Select 0054and press 0098to confirm.
X Select the desired language and press 0098
to confirm.
Changing the character set of the charac-
ter bar
X Select 0042and press 0098to confirm.
Depending on the previous setting, the
entry mode changes to special characters
or to letters with numbers.
Selecting an entry directly from the list Using the controller
X
You can switch to the list after the charac-
ter bar appears.
X Turn 00790052007Aor slide 009700520064the controller to
select an entry and press 0098to confirm. 54
Using the phone bookTelephone

is a phone book entry for the number that
is calling.
R During outgoing calls where the number is
entered manually, the recipient's name is
not displayed. This is the case, even if there
is a phone book entry for the number that
is being called.
R The call list is hidden.
R Redialing is not possible.
R The received text messages list is hidden.
There is still a notification for incoming text
messages. For this to be the case, the con-
nected mobile phone must support the
MAP profile. However, it is not possible for
the passenger, for example, to view the
phone number or access the data.
X Connecting a mobile phone (Y page 44).
X Select Phone
Phone from the telephone basic
menu by sliding 00520064and turning 00790052007Athe
controller and press 0098to confirm.
A menu appears. X
To hide details: selectHide Data: Hide Data: and
press 0098to confirm.
You can allow access to phone book data
0053 or you can prevent access 0073.Using call lists
Introduction
Audio 20 displays calls dialed and received
(including missed calls) during phone opera-
tion in separate lists. Call lists are not availa- ble unless a mobile phone is connected with
Audio 20.
Audio 20 supports the PBAP Bluetooth
®
pro-
file. For this reason, note that the system
behavior differs, especially when telephoning
via the Bluetooth ®
interface:
R Bluetooth ®
telephone with PBAP Blue-
tooth ®
profile:
The call lists are downloaded automatically
by Audio 20 as soon as the mobile phone
is connected to Audio 20.
R Bluetooth ®
telephone without PBAP Blue-
tooth ®
profile:
The call lists are generated and displayed
by Audio 20.
You can deactivate the automatic download
function for contacts and call lists stored in
the phone (Y page 55).
If you have activated the "Hide data" function,
Audio 20 does not display the call lists
(Y page 55).
i Bluetooth ®
phones without PBAP Blue-
tooth ®
profile: the call lists generated by
Audio 20 are not synchronous with the call
lists of your mobile phone. These calls may
or may not be listed on your mobile phone,
depending on the model.
i If no mobile phone is connected, then the
Call Lists
Call Lists menu item is grayed out and
cannot be selected. If you connect a differ-
ent mobile phone, the call lists from the
previous phone and their entries are auto-
matically deleted. They are still available on
the mobile phone itself.
i The respective menu item can only be
selected if calls have been received or
made using Audio 20. 56
Using call listsTelephone

Opening the call list and selecting an
entry
X Select Call Lists
Call Lists using the controller
(slide 00520064,009500520096or turn 00790052007A) and press
0098 to confirm.
X Select Incoming Calls
Incoming Calls orCalls
Calls
Dialed
Dialed and press 0098to confirm.
The corresponding list appears.
Missed calls are marked by the telephone
symbol to the left of the name or the number.
i You can also call up the list of dialed calls
by pressing the 0061button when the tele-
phone basic menu is shown. In this case,
the list will only show phone numbers.
X To select a list entry: slide009700520064or turn
00790052007Athe controller.
X To make a call: press0098the controller or
the ö button.
Using the buttons on the multifunction
steering wheel
X In the telephone basic menu in the instru-
ment cluster: press the 0061button.
The Calls Dialed
Calls Dialed call list is shown. The
entry at the top of the list (the last number
dialed) is marked.
X To select a list entry: press the0063
or 0064 button.
X To make a call: press0061. Displaying details from a list entry
Audio 20 can also show a shortened list entry
in full.
X Select a list entry by turning 00790052007Athe con-
troller.
X Select the list symbol to the right of the
entry by sliding 00520096the controller and
press 0098to confirm.
X Select Details Details and press 0098to confirm.
The detailed view appears. X
To go back to the list: slide009500520096 repeat-
edly until the list is highlighted. Deleting call lists
This function is available when Audio 20 cre-
ates and manages call lists. This is the case
if you use a Bluetooth ®
telephone without the
support of the PBAP Bluetooth ®
profile.
X Select Call Lists Call Lists from the telephone
basic menu by turning 00790052007Athe controller
and press 0098to confirm.
X Select Delete Call Lists
Delete Call Lists and press0098
to confirm.
A prompt appears asking whether you wish
to delete all call lists.
X Select Yes YesorNo
No and press 0098to confirm.
If you select Yes
Yes, the call lists are deleted.
If you select No
No, the process will be can-
celed. Using the speed dial list
Storing a phone book entry in the
speed dial list
You can assign ten speed dial presets (0 – 9)
to the speed dial list.
Option 1:
X Search for a phone book entry in the phone
book (Y page 53).
X Select the list symbol to the right of the
entry by sliding 00520096the controller and
press 0098to confirm.
A menu appears.
X Select Speed Dial Speed Dial by turning00790052007Athe
controller and press 0098to confirm.
A menu appears. Using the speed dial list
57Telephone Z

Speed dial menu
X
Select Assign Assign Speed
SpeedDial
DialPreset
Preset using
the controller and press 0098to confirm.
The speed dial list appears. The selected
phone book entry is listed as the first entry.
The next available speed dial preset is high-
lighted. X
Select the speed dial preset by turning
00790052007A the controller and press 0098to con-
firm.
The phone book entry is saved in the speed
dial preset.
Option 2:
X Call up the telephone basic menu:
R
Telephony via the Bluetooth ®
interface
(Y page 48)
X Select Call Lists Call Lists using the controller
(slide 00520064and turn 00790052007A) and press 0098to
confirm.
X Select Speed Dial Preset List
Speed Dial Preset List and
press 0098to confirm.
The speed dial list appears. X
Select the list symbol to the right of the
entry by sliding 00520096the controller and
press 0098to confirm.
X Select Assign Speed Dial Preset
Assign Speed Dial Preset and
press 0098to confirm.
X Proceed as described under option 1. Making a call via speed dial
A description can be found in the "Telephone
operation" section (Y page 51). Deleting a speed dial number
X To delete a speed dial preset: select
Delete Speed Dial Preset Delete Speed Dial Preset from the
speed dial menu by turning 00790052007Athe con-
troller and press 0098to confirm.
The speed dial number is deleted.
X To delete all speed dial presets: select
Delete All Speed Dial Presets
Delete All Speed Dial Presets from
the speed dial menu by turning 00790052007Athe
controller and press 0098to confirm.
You will be asked whether you want to con-
tinue.
X Select Yes
Yes orNo No and press 0098to confirm.
If you select Yes
Yes, all speed dial presets will
be deleted from the speed dial list.
If you select No
No, the process will be can-
celed. 58
Using the speed dial listTelephone

Audio system features
.......................60
Radio mode .......................................... 60
Satellite radio ...................................... 64
Audio CD and MP3 mode ....................68
Bluetooth Audio .................................. 74
Operation with the Media Inter-
face ....................................................... 80
Audio AUX mode ................................. 85 59Audio