Sharp FO-475 Operation Manual page 57

Recording a "Memo"
You can leave a "memo" for yourself or other users of the machine. It will be
recorded in the General Box, and played back when messages in that box are
listened to.
*
1
Press " " and "#" on the telephone.
2
When you hear a short beep, speak into
the telephone to record the memo.
3
When you are finished, press "0" and "#".
If the FO-475 detects a certain period
of silence, it will stop recording
automatically.
Remote Operations
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