Thuraya XT-DUAL - Manual (Page 81)

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03 Using the menu
Select which code to change. You will be asked to enter first the
existing code followed by the desired new code. Afterwards you
need to re-enter the new code for confirmation.
Ɣ 10.6.2. Change codes
You can change the Security code,
PIN 1, PIN 2, and Barring code.
NOTE
‡ When the product is shipped out, the Security code is set to
'0000'.
Ɣ 10.6.3. Fixed dial
Fixed Dial is a function to restrict outgoing calls only to predefined
numbers. If you activate Fixed dialing you will not be able to call
other numbers than the ones that you have registered (and
emergency numbers). If calls are necessary to other numbers,
the PIN 2 code is required to deactivate the Fixed dial function.
Menu
> 10.
Settings
> 6.
Security
> 3.
Fixed dial
How to activate Fixed dial:
Press Option and either Assign or Select from
contacts to register a number that shall not be
blocked when Fixed dial is activated. Repeat
the procedure for all numbers that you would
like to add. Afterwards press Activate and enter
the PIN 2 code to enable Fixed dial.
You can later Edit, Delete and Deactivate the service.