Abstract: A diagnostic tool includes a telephone connector, a phone line emulator and a processor. The phone line emulator emulates a telephone connection to a device under test connected to the telephone connector. The processor allows a user to select tests to be performed on the device under test. The tests include a send fax test, a receive fax test and a data modem test.

Abstract: A diagnostic tool includes a USB device connector and a processor. The processor allows a user to select a type of device under test that is to be tested. The processor has the ability to test PictBridge functionality of a host USB. The types of device under test selectable by a user include devices under test that do not have ability to communicate using PictBridge.

Abstract: A diagnostic tool includes a fax test module, a display and a processor. The fax test module includes a telephone connector, a fax modem module and a phone line emulator. The processor causes menus to be shown on the display. The menus allow a user to select tests to be performed on a device under test. The tests include a send fax test, and a receive fax test. The menus list devices that can be tested by the diagnostic tool, and the menus list at least one device that does not have fax capability and at least one device that does have fax capability.