Brother MFC-6800 - Manual (Page 147)

S E T T I N G U P A N D U S I N G P C F A X ( F O R W I N D O W S ® O N L Y ) 16 - 4
Setting Up Sending
To access the Sending tab from the Brother PC-FAX Setup dialog box, click the
Sending tab.
Outside line access
Enter the number needed to access an outside line. This is sometimes required
by the local PBX telephone system.
Include header
To add header information to the top of the fax pages being sent, check the
Header box.
Address Book file
You can select different database files for use with the Address Book. You must
enter the path and file name of the database file or use the Browse button to view
the file system to select the file.