2005 MERCEDES-BENZ C320 audio

217 Controls in detail
Audio system

Press button ‚ or ƒ
repeatedly until desired entry has
been reached.
The stored entries are selected in
alphabetical order with the
sub-entries.

When you have selected a number,
press s button.
The call will be made.


Viewing the telephone number of a
phone book entry
Search for desired entry.

Press
NUM
soft key.
The telephone number of the phone
book entry appears in the display.


Returning calls received

Press
MEM
soft key or press
button‚ orƒ.

Press
RCV
soft key (received calls).
The number of received calls and
then the call last received appear
briefly in the display.

Select desired telephone number
with button ‚ or ƒ.
The letter
R and the number of the
memory position appear in the
upper left-hand corner of the
display. The numbers are stored in
the order of the calls received.

When you have selected a number,
press s button.
The call will be made.
iSeveral sub-entries can be stored for
each main entry (name). These entries
are marked by a corresponding
abbreviation that appears in the upper
left-hand corner of the display. The
following abbreviations for sub-entries
are possible:
CEL = Mobile phone
HOM = Home
WOR = Work
FAX = Fax
PAG = Pager
TEL = Main

218 Controls in detailAudio system

Speed dial
If you have stored telephone numbers
as speed dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
briefly.

Press s button.
The call will be made.


Turbo dial
If you have stored telephone numbers
as turbo dial numbers in your
telephone, you can also enter these
with buttons 1 to R on the radio
unit.
Press desired button 1 to R
until the call is made.Redial
If the number you have dialed is busy, you
can again place calls to the last ten
telephone numbers dialed using the redial
function.


Manual redial

Press s button.
The telephone number last dialed
will appear in the display.

Select desired telephone number
with button ‚ or ƒ.
The letter
L and the number of the
memory position appears in the
left-hand corner of the display. The
numbers are stored in the order of
the calls received.

When you have selected a number,
press s button.
The call will be made.
iIf you have activated the automatic re-
dial function on your mobile telephone,
the number of the person being called
is automatically redialed after a short
waiting period if there is a busy signal.
Refer to the separate operating instruc-
tions for the mobile telephone.

219 Controls in detail
Audio system
Accepting an incoming call
If the telephone is active in the background
(reception symbol is visible in the display),
the audio source is muted when an incom-
ing call is received. A ringing tone can be
heard and the caller’s telephone number,
or the name under which the telephone
number has been saved in the telephone
book, appears in the display. If the caller’s
number is not relayed,
CALL
will appear in
the display.

Press s button.
The call is accepted.Muting a call
It is possible to mute a call; the caller is
then no longer able to hear you.


Mute on
Press
MUT
soft key.

MIC MUTE
will appear in the display.


Mute off
Press
MUT
soft key again.
Terminating a call

Press t button.
The current call is terminated and the
muted audio source becomes active
again.Accepting a second incoming call
If you receive another call during an
already active call, you can accept the
second call and switch between the two.


Accepting a second call
Place new call by entering
telephone number manually.
You are connected to the second
caller; the first caller is kept on hold.
iYou will be notified of the second call
acoustically, but you will not see this in
the display.

220 Controls in detailAudio system

Switching between calls
Press s button.
This switches between the calls.
The non-active call is kept on hold.


Terminating a call
Press t button.
The current call is terminated. The
connection to the caller previously
kept on hold is also interrupted;
however, reconnection is indicated
by an acoustic signal.Placing a second call
If you wish to place another call during an
already active call, you can place the
second call and switch between the callers
or combine them into one call. Note that
this feature is depending on availability
from your mobile phone service provider.


Placing a second call
Place a new call by entering
telephone number manually.

Press s button.
You are connected to the second
caller; the first caller is kept on
hold.


Terminating a call
Press t button.
The current call is terminated. The
connection to the caller previously
kept on hold is also interrupted;
however, reconnection is indicated
by an acoustic signal.


Combining two calls
Press s button.
The calls are combined into one
call.


Terminating a combined call
Press t button.
The connection to both callers is
terminated.

221 Controls in detail
Audio system
Emergency calls “911”
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone* is inserted in the phone
cradle*. Unless otherwise specified, the
descriptions refer to the audio system
head unit.
Consult the separate telephone operating
instructions that came with your mobile
phone* for information on how to place a
“911” emergency call on the mobile
phone*. The following conditions must be met for a
“911” emergency call:


Telephone must be switched on.


The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures
yourself. GSM network phones
Placing a “911” emergency call using
audio head unit with the phone locked

Press hbutton to switch to
telephone operation. PIN?
appears in the audio display.

Enter 911 using the number keypad on
the audio head unit.

Press
OK soft key or sbutton for
dialing to begin.
DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency.
Warning!
G
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.
iEmergency calls may not be possible
with all telephone networks or if certain
network services and/or telephone
functions are active. Check with your
local service providers.

222 Controls in detailAudio systemPlacing a “911” emergency call using
audio head unit with the phone
unlocked
Press hbutton to switch to
telephone operation.

Enter 911 using the number keypad on
the audio head unit.

Press sbutton for dialing to begin. DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency. TDMA/CDMA network phones
Placing a “911” emergency call using
audio head unit with the phone locked

Press hbutton to switch to
telephone operation. CODE?
appears in the audio display.

Enter 911 using the number keypad on
the audio head unit.

Press
OK soft key or sbutton for
dialing to begin.
DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency. Placing a “911” emergency call using
audio head unit with the phone
unlocked

Press hbutton to switch to
telephone operation.

Enter 911 using the number keypad on
the audio head unit.

Press sbutton for dialing to begin. DIALING
appears in the audio display
while the telephone establishes the
connection.

Wait until the emergency call center
answers, then describe the emergency.
iIf no SIM card is in the mobile phone, NO SERVICE
appears in the audio
display. In that case, you only can make
an emergency call on the mobile phone
itself, without the use of the head unit.

249 Controls in detail
Useful features
The Tele Aid system
(Tele
matic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response:

automatic and manual emergency


roadside assistance and


information
The Tele Aid system is operational provid-
ing that the vehicle’s battery is charged,
properly connected, not damaged and
cellular and GPS coverage is available.
The speaker volume of a Tele Aid call can
be adjusted when using the volume control
on the multifunction steering wheel. To
raise, press buttonæ and to lower,
press buttonç. The volume can also be
adjusted using the volume knob on your
audio system or COMAND* head unit.

To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.
Shortly after the completion of your Tele
Aid acquaintance call, you will receive a
user ID and password. By visiting
www.mbusa.com and selecting “Tele Aid”
(USA only), you will have access to account
information, remote door unlock and
more.System self-check
Initially, after switching on ignition, mal-
functions are detected and indicated (the
indicator lamps in the SOS button, the
Roadside Assistance button• and the
Information button¡ stay on longer
than ten seconds or do not come on). The
message
Tele Aid malfunction. Drive
to workshop
appears in the multifunction
display.
iThe SOS button is located above the
interior rear view mirror.
The Roadside Assistance button•
and the Information button¡ are
located below the center armrest
cover.
iThe Tele Aid system utilizes the cellular
network for communication and the
GPS (Global Positioning System) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.

250 Controls in detailUseful features
Emergency calls
An emergency call is initiated
automatically following an accident in
which the emergency tensioning devices
(ETDs) or air bags deploy.
An emergency call can also be initiated
manually by opening the cover next to the
interior rear view mirror labeled SOS, then
briefly pressing the button located under
the cover. See (
page 251) for
instructions on initiating an emergency call
manually.
Once the emergency call is in progress, the
indicator lamp in the SOS button will begin
to flash. The message
Connecting call

appears in the multifunction display and
the audio system is muted. When the
connection is established, the message
Call connected
appears in the multifunc-
tion display. All information relevant to the
emergency, such as the location of the
vehicle (determined by the GPS satellite
location system), vehicle model, identifica-
tion number and color are generated.A voice connection between the Response
Center and the occupants of the vehicle
will be established automatically soon af-
ter the emergency call has been initiated.
The Response Center will attempt to
determine more precisely the nature of the
emergency provided they can speak to an
occupant of the vehicle.
The Tele Aid system is available if


it has been activated and is
operational. Activation requires a
subscription for monitoring services,
connection and cellular air time


the relevant cellular phone network
and GPS signals are available and pass
the information on to the Response
Center
Warning!
G
If the indicator lamps in the SOS button, in
the Roadside Assistance button and/or in
the Information button remain illuminated
constantly in red and/or the message Tele Aid malfunction. Drive to
workshop
is displayed in the multifunction
display after the system self-check, a mal-
function in the system has been detected.
If a malfunction is indicated as outlined
above, the system may not operate as
expected. Have the system checked at the
nearest Mercedes-Benz Center as soon as
possible.
iLocation of the vehicle on a map is only
possible if the vehicle is able to receive
signals from the GPS satellite network
and pass the information on to the
Response Center.