I have had AT&T Call Vantage VOIP since 10/04 running on Time Warner Premium Road Runner and it has been about flawless. It works perfectly with 911 and my alarm, and seizes the line as it should. I wired it directly to my phone distro panel.

My friend has VOIP.NET and has had a lot of issues.

Edit, forgot to add that we have the VOIP TA, the cable modem, my routers, and the alarm on 2 APC UPS's. The alarm has its on battery powered cell backup, just in case VOIP gets hosed. But so far it has been rock solid.

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