Yes, you can test your fax machine and verify the proper setup. All fax machine manufacturers provides a number to examine the functioning. For your device, you can dial an HP fax test number over your fax machine and then select the option to send or start depending on the equipment model. Within a few minutes, the device will finish transmitting, and you will receive a return fax from the same number, which indicates the proper machine setup. And if you do not get the return fax, that means there is a problem with configuration. To rectify the issue, you will have to set up the fax machine again using the manufacturer's instructions and retry the above steps to test the setup. If you still find any trouble, then you can contact us and get assistance to set up your fax machine.