Defining Send Fax Options - Canon MultiPASS L6000 Software Manual

For a onetime recipient, you must select Use Outside Dialing Prefix check
box in the Send Fax dialog box if you need to use a prefix (such as 9) to
access an outside line.
For a recipient from the Address Book, if you selected the Use Outside
Dialing Prefix in the New Entry or New Recipient dialog box used to
create their entry, you do not need to select Use Outside Dialing Prefix.

Defining Send Fax Options

The following sections provide additional information on defining
options in the Send Fax dialog box.
Chapter 5 PC Faxing 5-7