FAX-575/FAX-575e FAQs & Troubleshooting FAX-575/ FAX-575e Not your product? Sort by: Updated Date Popularity 3 Results 1. 11/19/2012 How does the "FAX/TEL" Mode work? 2. 11/19/2012 What does it mean if the fax machine rings its pseudo-ring/ double-ring (F/T RING TIME) and there is not a voice call? 3. 11/19/2012 What does the pseudo-ring (double ring) indicate in the F/T Mode? Fax FAQs & Troubleshooting