FAX-837MC/FAX-837MCS FAQs & Troubleshooting FAX-837MC/ FAX-837MCS Not your product? Sort by: Updated Date Popularity 2 Results 1. 07/07/2009 My FAX/MFC will not Dial. Why? 2. 24/08/2006 Whenever anyone attempts to leave a message, all they hear are funny sounds and eventually a high pitched squeal. Why is this happening? Telephone FAQs & Troubleshooting