Find "Call barring"
Press the Navigation key.
Scroll to Calls and press the Navigation key.
Scroll to Call settings and press the Navigation key.
Scroll to Call barring and press the Navigation key.
Cancel all call barrings
Scroll to Cancel all barrings and press the Navigation key.
Key in the barring password (default is 0000) and press the Navigation key.
Exit
Press Disconnect to return to standby mode.