Suddenly, Fax attempts get 'no answer' error msg at all fax phone numbers that I have always used.

[JR6512]

Today, suddenly, all attempts to send a afx to any number I have used in tghe past gets 'NO ANSWER" error

[sandytechy20]

@JR6512

This is a great location to get assistance! I read your post and see that you are getting no answer error message on HP Officejet pro 8720 printer. I would like to help you resolve this issue. 

• If you are getting a "No answer" message that means the number you are faxing to is not answering
• Try to fax to HP fax test server(1-888-473-2963).
• If you get the fax message back then no issues with your printer.

Click here and follow the document for more troubleshooting steps.

Let me know how it goes.

Cheers.