Konica Minolta FK-502 - Manual (Page 397)

Utility mode 10
C451 10-91
3
Touch [PBX Connection Setting].
4
Touch [No], enter the outside line number after confirming the display
of cursor in input field of outside line number.
– When [C] (clear) key is pressed, all entered contents are deleted.
5
Touch [OK].
The settings are changed.
6
Touch [Close] until it returns to Fax/Scan screen.