Mercedes-Benz MCS Operator's Manual page 82

Close the windows to reduce outside
noise when you use hands-free opera-
tion.
A brief disconnection from the cellular
network is not a malfunction. A brief
disconnection can occur when the net-
work switches areas. The phone auto-
matically tries to sign on to a network
again.
If the message PLEASE ENTER UN-
LOCK CODE appears, enter the unlock
code to enable all telephone functions.
Entering the unlock code ( page 84).
In the following situations, it is not possible
or not yet possible to use the telephone:
The telephone is already unlocked but
is not registered or not yet registered in
the network.
The message NO SERVICE appears.
The telephone tries to register into an
existing network. If the network is
available, the telephone is ready for
use.
The above message also appears if the
network is no longer available due to
weak signals.
Telephone*
Important notes
The message TELEPHONE NOT AT-
TACHED appears.
Please attach the telephone.
The message PHONE IS OFF... ap-
pears.
Please switch on the telephone.
It is not possible to make a call in the fol-
lowing situations. One of the following
messages appears:
SYSTEM BUSY
Dialing has failed because system is
busy.
NO SERVICE
Dialing has failed because a network
cannot be received.
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