Dell MINI 3IX - Manual (Page 64)

Using the Phone
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5 Continue adding numbers until you have all
the contacts you wish to include on the FDN
list.
You may also edit or delete contacts at any
time.
6 To disable FDN functionality, re-select the
FDN Enabled option again.
Call Barring
The call barring screen allows you to enable or
disable a function to restrict outgoing or incoming
calls from a specific number or contact by using a
preset password.
To enable or disable the call barring functions, tap
the option on the screen that you would like to set
up.
To exit this screen tap the Back icon.