1. After you service our phones on Jan 3, 2009, our fax line gets intermittent phone calls and people hang up, of course when they hear the fax tone. Your technicians have been heree and never find anything worng, they even changed something in your main office. 2. The voice qulity changes from very good to much static during the dya on either of our lines. If you ca'nt fix it this time, I'm switching to internet phone serrvice. read full review »