Brother MFC 8840D A - Manual (Page 177)

BROTHER NETWORK PC-FAX SOFTWARE 9 - 2
Sending setup
In order to use the full functionality of Network PC-FAX it is strongly
recommended that you enable the Network PC-FAX Setup option on
the Sending tab Brother PC-FAX Setup.
1
Access the Sending Tab from the PC-FAX dialog box by clicking
—OR—
From the Start menu, select All programs, Brother, MFL-Pro
Suite MFC-8840D, and then select PC-FAX Setup.
2
Check Enable box.
This software can be used in a network environment and with a
locally connected machine. It is important that when used in a
network environment the Network PC Fax is set to enable.