Find "Mode"
Press the Navigation key.
Scroll to Settings and press the Navigation key.
Scroll to Security settings and press the Navigation key.
Scroll to Fixed dial and press the Navigation key.
Scroll to Mode and press the Navigation key.
Turn fixed dialling on or off
Highlight On or Off and press the Navigation key.
Key in your PIN2 and press the Navigation key.
Exit
Press Disconnect to return to standby mode.