Dell 1355 Color Laser User Manual page 308

NOTE:
before sending a fax if the Fax service is locked with a password.
8 Click Start Sending.
For Apple Macintosh:
NOTE:
The names of the windows and the buttons may be different from those
given in the following procedure depending on the application you are using.
NOTE:
When using a USB connection on Mac OS 10.4.x, upgrade Common Unix
Printing System (CUPS) software to version 1.2.12 or later. You can download it from
CUPS web site.
1 Open the file you want to send by fax.
2 Open the print dialog box from the application, and then select Dell 1355
Color MFP Fax.
306
Faxing
Enter the password in the Password field in the Authorization area