2 Almost 3 weeks with AT&T "Gigabit" service, no loss of service, have't restarted the modem. While I see 200-350Mb/s constantly on my iPhone, I have no network card to connect that is Gigabit. And I do not use the AT&T router wirelessly. It's turned off. I use an Apple TimeCapsule, latest gen. While I agree it's a stretch to call it a "Gigabit" service, it's fast as shit, and more than we need. I do Directv, I will not change that, best TV service there is.