Brother MFC-8440 User Manual page 304

6
Enter the sender information, and then click Next.
7
Select Brother MFC-8440 or MFC-8840D in the Please select
the fax device pull-down list. Click to select the Enable
Receive check box. Specify the number of rings before your
MFC will attempt to answer the fax. Click Next.
USING BROTHER PC-FAX SOFTWARE 17 - 23