Konica Minolta bizhub 751 Quick Manual page 174

Useful fax operations
!
Detail
In order perform an F-code transmission, a confidential box and transmission ID must be specified on
the recipient's fax machine.
An F-code transmission can be used only if the recipient's fax machine supports F-code functions.
Note
For details, refer to chapter 4, "Transmitting data", of the User's Guide [Network Scan/Fax/Network Fax
Operations].
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