Press [Menu] [4] [9]
You will receive a message  ” Handset reset will set all values to Factory setings and deletes last calls
Press [Yes] Handset will appear to freeze, but will eventually shut down.
DO NOT REMOVE THE HANDSET FROM THE SATELLITE PHONE TERMINAL.
You may need to then power cycle the satellite phone terminal.
Next, if you plan on using the terminal for incoming calls, you may want to reset the Mobile Subscriber Number (MSN) to match the terminal you are using.