FAX-2840 FAQs & Troubleshooting FAX-2840 Not your product? Sort by: Updated Date Popularity 3 Results 1. 24/09/2015 Why doesn't the machine answer when receiving a call? 2. 16/09/2014 I am having a problem receiving faxes. 3. 07/04/2011 I cannot send and/or receive faxes using Voice Over Internet Protocol (VoIP). More FAQs Fax FAQs & Troubleshooting