To answer the question of it working with DSL yes, vonage is only using a 64K tunnel for voice. So they doesn't even come close to eating up your bandwidth. Voice sends very little data. As far as the reliability of Vonage, I have NO idea. I have heard friends who LOVE it and I have heard people like flappy who hate it. *shrugs* Guess you just have to try, but then again it isn't the only VoiP company. AT&T has one as well.