LG G3100 User Manual page 139

The barring service of all incoming calls.
The barring service of all incoming calls when abroad.
You can cancel all barring service.
You can change the password for Call Barring Service.
You can restrict your outgoing calls to selected phone number. The
numbers are protected by your PIN2 code.
Press [Menu] in standby mode.
Press 4 key for direct access or use U and D to enter
.
Scroll to highlight
Select
If the PIN 2 code is correct, you can view the following
submenus.
50
by pressing [Select].
You can restrict your outgoing calls to selected
phone number.
You can call without restricting phone number.
You can view the number list saved as Fixed dial
number.
menu.