MFC-8820DN FAQs & Troubleshooting MFC-8820DN Not your product? Sort by: Updated Date Popularity 3 Results 1. 12/15/2014 I am using Voice Over Internet Protocol (VoIP) and cannot send and/or receive faxes. What can I do? 2. 05/10/2013 Why doesn't the machine answer when receiving a call? 3. 12/18/2008 I am experiencing problems receiving faxes. What can I do? Fax FAQs & Troubleshooting