Make the following settings if you need to use numbers such as 0 or 9 as they are instead of as part of an external access code.
Select Settings on the printer's control panel.
Select General Settings > Fax Settings > Basic Settings.
Select Line Type, and then select PBX.
When sending a fax to an outside fax number using the actual external access code, select the Access Code box, and then select Do Not Use.
Select OK to apply the settings.