MFC-820CW FAQs & Troubleshooting MFC-820CW Not your product? Sort by: Updated Date Popularity 3 Results 1. 16/09/2014 I am using Voice Over Internet Protocol (VoIP) and I'm having problems receiving faxes. 2. 05/08/2009 Why doesn't the machine answer when receiving a call? 3. 09/12/2005 I cannot receive a colour fax. More FAQs Fax FAQs & Troubleshooting