Motorola M800 Reference Manual page 47

         
Off
When selected, this option will disable all call barring for
incoming calls.
Cancel All Barring
This option can be used to set all Call Barring options to Off.
Change Bar Password
This option can be used to change the call barring password.
After selecting this option, you will be asked to enter the current
password.
You will then be asked to enter, and then re-enter, your new,
4 digit, barring password. When the change has been made by
the network, the phone will display a confirmation message.
Key Answer Only
AThis option is only available if you have a phone with a flip.
This feature has two options: On or Off.
When set to On, this feature allows the flip to be opened without
answering an incoming call. The call can be answered by pressing
an appropriate key (O, 1 to 9, [ or ]). To reject
the call press C.
When set to Off, opening the flip answers an incoming call.
45 English
Using the Options Menu