how to answer fax calls automatically
The HP Officejet is factory-set to answer all calls automatically after 5 rings, so
you do not need to change any settings if you want to automatically receive
faxes. Your HP Officejet will not be able to distinguish between fax and voice
calls, however; if you suspect a voice call is incoming, you will need to answer
it before the 5th ring or the HP Officejet will answer first.