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Controls in detail
Audio system
̈ Press s button.
You are connected to the second
caller; the first caller is kept on
hold.
ț 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.
ț Combining two calls
̈ Press s button.
The calls are combined into one
call.
ț Terminating a combined call
̈ Press t button.
The connection to both callers is
terminated.
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:
ț Telephone must be switched on.
ț The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures your-
self.
GSM network phones
Placing a “911” emergency call using
audio head unit with the phone locked
̈ Press h button to switch to tele-
phone operation.
PIN?
appears in the audio display.
̈ Enter 911 using the number keypad on
the audio head unit.
Warning! G
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.
i
Emergency calls may not be possible with all
telephone networks or if certain network servic-
es and/or telephone functions are active. Check
with your local service providers.
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