Konica Minolta bizhub 421 - Manual (Page 144)

501/421/361 6-7
Useful functions (G3/IP/I-FAX) 6
6.5.3 Transmitting faxes to a relay distribution station
On the Communications Settings > Communication Method Settings screen, select [F-Code TX], and then
enter the following items.
SUB Address: Enter the relay user box number of the relay distribution station, using the keypad.
Password: Enter the relay password.