So, I found the instructions in FAQ for missed call log on 8400 series phones. I followed all the steps, and could not make it work. This was about 6 months ago. It never worked, until today, that is. And, it only worked once! Can't make it happen again! I am calling in on the same number, and no success. When I look at cdr record, it looks exactly the same for test calls as it did for the call that worked, with the only difference being the number called from. Has anyone else had this problem? I had just given up on it, but left the settings in place. Suddenly, it works once, then never again?