How do I set up fax on the HP OfficeJet Pro 6970?
Fax can be set up using the HP printer software (recommended) or the printer control panel. On Windows, use the Fax Setup Wizard during software installation, or open the HP printer software afterward and select it from the Fax tab. On the control panel, touch Fax on the Home screen and then touch Setup. On OS X, use Basic Fax Settings in HP Utility after software installation. (Page 2)
From the official HP Officejet Pro 6970 All-in-One Printer manual, page 2
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