At work they use the same ISP and cable modem gateway that I use at home which is an Arris TG862........although I seemed to have everything working and figured out most of the problems, the Tivo's not wanting to connect still have a mind of their own at times......like I said before, if I many any changes in the router and save those changes or reboot the Tivos will quit working and that was with DMZ enabled.......but at some point they will start working again.......so there still seems to be something incompatible with this router and Tivo and its really hard to figure out.........also how should the antenna's be oriented for this router to get the best reception in a single story house? the owner's manual said to extend them at a 45 degree angle away from the unit and that's what I did but also noticed the wifi, particularly the 5GHz band wasn't that great as far as range goes so I'm a little disappointed in that....it didn't appear to have any more range than the 880L from my testing unless I should be positioning those antennas a different way? any suggestions? thanks, James