Outgoing faxes not working

[RuiKZ6N6K-xrx]

Hi, Please do a simple test just to confirm that everything is OK with the line. Please disconnect the phone line cable from the printer and connect to a normal phone and dial any of the remote fax number you used to send fax and see if the call is answered. If yes, then consider calling to your local support centre. Regards Rui

[dposkey]

Yesterday we started receiving a "No Answer" to all of our outgoing faxes.  This was many different faxes to many different phone numbers so I do not think it is the recepient's phone number that is the problem.

We tried turning Xerox Workcentre M20i off and on, checked all the connections, etc.

Any ideas?