HP OfficeJet Pro 8720 Fax Setup
On your laptop, load the doc that you want to fax. Make sure not to use the telephone (for calling) while faxing. Type the receiver’s fax or telephone number on the printer’s display key panel. Tap the Black, Color, or Send icon on the printer’s access panel. If you hear a busy sound, then the receiver’s telephone line might be busy. Halt for few seconds and then try again or ask the receiver to terminate the call. After the fax sends, a test report prints from your HP Officejet Pro 8720 Printer Setup. Tap the Cancel icon to terminate the fax process at any time.