FAQs & Troubleshooting FAQ Search Results MFC-8500 Not your product? Search by FAQ ID number Search Back to FAQs & Troubleshooting. 2 Results 1.faq00002123_007 I'm using Voice Over Internet Protocol (VoIP) and am having problems sending faxes. What can I do? 2.faq00002123_008 I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes. What can I do? FAQs & Troubleshooting