This could also causeyouto lose control of
th eve hicle.
Only operate this equipment when theve hi‐
cle is stationar y.
You must observ eth e legal requ irements forth e
country in whi chyou are cur rently driving when
operating mobile communication equipment in
th eve hicle.
Fu rther information can be obtained from an
authorized Mercedes-Benz Center or at: http://
www.mercedes-benz.com/connect.
To impr ovevoice quality, the multimedia sy stem
supports telephone calls in HD Voice
®.
In order touse this function, the mobile phones
and the mobile phone network pr ovider of the
person you are calling must support HDVoice
®.
Depending on thequ ality of the connection, the
vo ice quality may fluctuate. The
following situations can lead tothe call
being disconnected while theve hicle is in
motion:
RThere is insuf ficient network co verage inthe
area.
RYo u mo vefrom one GSM or UMTS transmit‐
te r/receiver area (cell) into ano ther and no
communication channels are free.
RThe SIM card used is not compatible with the
network available.
RA mobile phone with "Twincard" is logged
into the network with the second SIM card at
th e same time.
Connecting a mobile phone (Blue tooth
®tel‐
ephony)
Re quirements:
RBlue tooth®is activated on the mobile phone
(see the manufacturer's operating instruc‐
tions).
RBlue tooth®is activated on the multimedia
sy stem (→page 249). Mul
timedia sy stem:
, 3 K R Q H.á &