Konica Minolta BIZHUB C250 Operations page 373

Utility mode
– In the Utility Mode, it is also possible to enter a number displayed
in the key through the keypad for selection. In the case of [Fax
Setting], enter 8 through the numeric keypad.
3
Press [Multi Lines Setting].
4
Press [Telephone Line Setting].
– To close the Utility Mode screen, press [Exit] in the sub-area.
bizhub C250 (Phase3)
11
11-75