FAX-1860C FAQs & Troubleshooting FAX-1860C Not your product? Sort by: Updated Date Popularity 2 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. 04/25/2013 I am experiencing problems sending a fax. Fax FAQs & Troubleshooting