Nokia 9210i User Manual page 70

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Call barring service (3-3-2)
This network service allows you to restrict incoming calls to, and outgoing calls
from your phone. You need a barring password to be able to use this function.
Contact your network service provider to get a barring password.
The options are: Outgoing calls/International calls/International calls except to home
country/Incoming calls/Incoming calls when abroad/Cancel all barrings.
Closed user group (3-3-3)
This network service allows you to set the communicator to accept calls to and
from a selected group of people. For details on creating a user group and activating
this service, contact your network service provider.
Preset - Resets the phone to use a user group the SIM card owner has agreed upon
with the network service provider.
On - Uses a particular user group. Calls can be made to or received from the
members of the selected group only.
Off - Calls can be made and received in the normal way. You can use this option
only if you are entitled to do so.
Lock if SIM changed (3-3-4)
You can protect your phone against unauthorised use with the lock code. To do
this, enter your lock code and select the option Yes . For details, see 'Security' on
page 218. Note that no passcode system can guarantee absolute prevention of
unauthorised access.
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