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! Network management (4/5)
You have the choice to telephone in satellite
mode (SAT) or in GSM 900 mode (GSM) – or
to switch automatically between the two
modes if you happen to be in an area where
only one of the two is possible.
There are several ways to fine-tune the mo-
bile phone’s access to networks so that you
are never in danger of losing connection with
the network.
Note:
For display symbols indicating the network sta-
tus and status of signal strength, see page 5.
: Operating mode: GSM and/or SAT (5)
You can set the mobile phone’s operating
mode to GSM or to SAT access. Or you may
use both of them by switching between
them.
}Single mode
Irrespective of whether you select exclusive
GSM Only or SAT Only mode, you will lose net-
work connection if you leave the coverage
area that can be reached in that single mode.
To set the operation mode:
Select
Menu > System Pref.
The current setting is displayed
Press Change
Select GSM Preferred or
SAT Preferred or
GSM Only or
SAT Only
}Preferred mode
If you decide to set the ’preferred’ access
either to GSM mode or to SAT mode, the
mobile phone will normally operate in that
preferred mode. Only if signal strength for
operation in the preferred mode becomes
too weak the mobile phone switches to
operate in the alternative mode:
–If
GSM Preferred is selected: The mobile
phone will initially attempt to access a
GSM network, if no GSM network is
available it will automatically attempt to
access a SAT network. When operating
on a SAT network, the mobile phone pe-
riodically scans for available GSM net-
works and will switch to GSM if the
service is available
–If
SAT Preferred is selected: The mobile
phone will initially attempt to access a
SAT network, if no SAT network is avail-
able it will automatically attempt to
access a GSM network. When operating
on a GSM network the mobile phone will
only switch to SAT service if the GSM
signal is lost. If SAT operation is desired,
the mobile phone can be manually
switched to SAT mode using the ’SAT
Only’ single mode setting.