When a new fax machine is installed, it can be difficult to determine if it is setup properly. While you could determine if your fax machine is properly configured by sending a test fax to a friend, family member or business with a fax machine, you can also do so using a free service provided by HP. The HP service is free of charge, and saves your peers from the inconvenience associated with the test fax.
Send a one page black and white text fax to 1-888-hpfaxme (1-888-473-2963).
When your fax is received by the HP Test Fax Service,
we will generate a return fax to you within five minutes confirming that
we received your fax. This verifies that you can both send and receive a
fax with your fax machine.
Read more : http://www.ehow.com/how_6572751_test-fax.html