Dell 2155cn/cdn Color Laser Printer - Manual (Page 497)

Understanding the Printer Menus 495
To set the fax number of the printer, which will be printed on the header of a fax
message.
NOTE: Ensure to specify Fax Number before using Junk Fax Setup .
Fax Cover Page
Purpose:
To set whether to attach a cover page to faxes.
Values:
DRPD Pattern
Purpose:
To provide a separate number for faxing with a distinctive ring pattern.
Values:
Off * Does not attach a cover page to faxes.
On Attaches a cover page to faxes.