Sharp UX-460 - Manual (Page 46)

OGM only mode
If needed, you can turn off recording of incoming messages. In this
case, your outgoing message will play, but callers will not be able to
leave a message. (The machine will still receive faxes sent by
automatic dialing.)
1
Press these keys: FUNCTION
0
The display will show: OGM ONLY MODE
STOP
2
Press 1 to turn on OGM only mode, or
2 to turn it off.
3
Press the STOP key.
or 1 2
Optional Answering Machine Settings
44