Depending on the quality of the connection, the
voice quality may fluctuate.
Call disconnection may occur when the vehicle
is in motion in the following situations:
R
an area may have insufficient network cover-
age.
R
you move from one GSM or UMTS transmit-
ter/receiver area into another and no chan-
nels are free.
R
the SIM card used is not compatible with the
network available.
R
you are using a mobile phone with "Twincard"
and the second SIM card is already logged in
to the network.
Connecting a mobile phone (authoris-
ing)
Requirements
R
Bluetooth
®
is activated on the mobile phone
(see the manufacturer's operating instruc-
tions).
R
Bluetooth
®
is activated on the multimedia
system (
Y
page 132).
Multimedia system:
X
COMAND Online:
+
Telephone
Telephone
X
Audio 20:
+
Tel/
Tel/
®
Searching for a mobile phone
X
Select
Connect device
Connect device
.
X
Select
Search for phones
Search for phones
.
X
Select
Start search
Start search
.
The available mobile phones are displayed. If
a new mobile phone is found, it appears in the
device list with the
Ï
symbol.
Connecting a mobile phone (authorisation
via Secure Simple Pairing)
X
Select the mobile phone. A code is displayed
in the multimedia system and on the mobile
phone.
X
The codes are identical: confirm this with
the mobile phone code.
Mobile phone connection (authorisation by
entering a passkey)
X
Select the Bluetooth
®
name of the mobile
phone.
X
Choose a one to sixteen-digit number
sequence as a passkey.
X
Multimedia system: enter the passkey and
select
b
.
X
Mobile phone: enter the passkey again and
confirm.
i
Up to 15 mobile phones can be authorised
on the multimedia system.
All phones are reconnected automatically.
Disconnecting a mobile phone (de-
authorisation)
Multimedia system:
X
COMAND Online:
+
Telephone
Telephone
X
Audio 20:
+
Tel/
Tel/
®
X
Select
Connect device
Connect device
.
X
Select the mobile phone in the device list.
X
Select
G
.
X
Select
De-authorise
De-authorise
.
X
Select
Yes
Yes
.
Changing mobile phones
Requirements
R
The mobile phones are connected (author-
ised) (
Y
page 150).
Multimedia system:
X
COMAND Online:
+
Telephone
Telephone
X
Audio 20:
+
Tel/
Tel/
®
X
Select
Connect device
Connect device
.
X
Select the mobile phone in the device list.
i
Only one mobile phone can be connected at
any one time. The connected mobile phone is
shown at the top of the list.
Setting the reception and transmission
volume
Requirements:
R
mobile phone is connected (authorised)
(
Y
page 150).
Multimedia system:
X
COMAND Online:
+
Telephone
Telephone
X
Audio 20:
+
Tel/
Tel/
®
X
Select
Connect device
Connect device
.
X
Highlight the mobile phone in the device list.
X
Select
G
.
150
Telephone
Mul
time
dia
sys
tems