Samsung SGH-P107BSACIN - Manual (Page 108)

Phone Settings
105
Enable : you are required to enter the SIM Lock password
when you switch the phone on.
FDN Mode
The FDN (Fixed Dial Number) mode, if supported by your
SIM card, allows you to restrict your outgoing calls to a
limited set of phone numbers.
The following options are available.
Disable : you can phone any number.
Enable : you can only call phone numbers stored in the
phonebook. You must enter your PIN2.
Note:
Not all SIM cards have a PIN2. If your SIM card does not, this menu
option is not displayed.
To change your PIN2, refer to the Change PIN2 menu
option.
Change PIN2
The Change PIN2 feature allows you to change your
current PIN2 to a new one. You must enter the current
PIN2 before you can specify a new one.
Once you have entered a new PIN2, you are asked to
confirm it by entering it again.
Note:
Not all SIM cards have a PIN2. If your SIM card does not, this menu
option is not displayed.