Originally Posted by bdjohns1

Well, the uplink bandwidth is the one that's going to be the tightest. Vonage does work fine on 128kbps links though. They also have a bandwidth tuning option on their site - you can adjust how much bandwidth Vonage uses from a high of ~90kbps to a low of 50kbps.

If you configure your home network properly, you should be able to prioritize VoIP traffic above all else. When I'm on a call, I can still upload - my computer just isn't allowed to cut into Vonage bandwith by my router/firewall (Linksys).