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2. Select the desired option. For example, to forward voice calls when your 
number is busy or when you reject an incoming call, select If busy.
3. To set the forwarding option on or off, select Options > Activate or Cancel. 
To check whether the option is activated, select Check status. Several 
forwarding options can be active at the same time.
Call restriction and call forwarding cannot be active at the same time. 
Call restriction
Call restriction (network service) allows you to restrict the calls that you 
make and receive with your phone. To change the settings, you need the 
restriction password from your service provider.
Scroll to the desired restriction option, and to request the network to set call 
restriction on, select Options > Activate. To set the selected call restriction 
off, select Cancel. To check whether the calls are restricted, select Check status. 
To change the restriction password, select Edit restriction passwd.. To cancel 
all active call restrictions, select Cancel all restrict..
Call restriction and call forwarding cannot be active at the same time. 
When calls are restricted, calls may be possible to certain official 
emergency numbers.
Network
Network mode—To select which network to use (shown only if supported by 
the service provider). If you select Dual mode, the device uses the GSM or 
UMTS network automatically, according to the network parameters and the 
roaming agreements between the network operators.