Xerox WorkCentre 490cx User Manual page 299

To use the WorkCentre connected to a telephone
and a PC with a fax/data modem:
From the
USB
connector
From the Printer
connector
In this configuration, you may have two fax machines; the WorkCentre and
your PC fax/data modem.
From the EXT
connector
From the LINE
connector
From the PC
modem LINE
connector
Dual Wall Outlet
(Both on same Line)
Telephone Connectivity Guidelines
(Optional)
9-33
9