Receiving faxes when you hear fax tones
If you have a phone line receiving both fax and phone calls and you
hear fax tones when you answer the phone, you can start the
receiving process in one of two ways:
If you are close to the HP LaserJet 3100 product, press
the control panel.
When you answer any phone connected to the line (an extension
phone) and hear fax tones, press
on the keypad and hang up.
For the second method to work, the extension phone setting must be
set to Yes. See “Enabling an extension phone” in chapter 8 to check
or change the setting.