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Open the printer properties dialog box, and then click the [Advanced Options] tab.
Select the [General user authentication] check box.
If you want to encrypt the login password, enter the driver encryption key set on the machine.
If you do not want to encrypt the password, proceed to step 4.
Click [OK] to close the printer properties dialog box.
Open the document you want to send from an application.
Select [LAN-Fax] as the printer and then start the print job.
The [LAN-Fax] dialog box appears
Click [User Settings...].
Enter the login user name and login password already set on the machine or server for user authentication.
If you enter an invalid login user name and login password, sending and/or printing does not start.
Click [OK] to close the dialog box.
