Brother MFC-822 Network User's Manual page 159

Clicking OK with start the BFP dialogue box as illustrated below.
From this dialogue box you can either specify an address in the
address line or select a location from the address book. If you wish
to type more than one location in the address line make sure they are
separated by ";".
When entering a Fax Contact you must first specify the
Internet Address of the machine that will send the document
followed by the fax number as shown below.
Mailmfc9650@brother.co.uk(fax#2537)
14 - 13 BROTHER INTERNET FAX PRINTING SOFTWARE