FAX-837MC/FAX-837MCS FAQs & Troubleshooting FAX-837MC/ FAX-837MCS Not your product? Sort by: Updated Date Popularity 3 Results 1. 11/19/2012 How do I connect an External Telephone? 2. 11/19/2012 How do I program the date and time? 3. 08/24/2006 Can an External Answering Device(TAD) be used instead of the built-in one? Product Setup FAQs & Troubleshooting