My product is unable to receive faxes after I changed the number of rings to answer, V.34, and DRD settings. What should I do?

• Do the following:
  
  1. Press the  Fax button.
  2. Press the  Menu button.
  3. Press or to select Restore Default Settings, then press OK.
  4. Select Reset Fax Send/Receive Settings.
  5. Press the 1 key to confirm your selection.
  6. Press the  Menu button to return to the Fax mode screen.