I wanted to quickly post that I have Uverse (1.5up and 12down) and have made 0 changes to the RG. I have had one line with voipo for over a year and recently switched my house line when uverse went to $35 a month. I have not needed to make port changes or anything with QOS. The PAP2 (Linksys) hangs directly off the RG. In fact, I can download at full speed and still make two voice calls with no issues.

My RG recently got a firmware update as well.