Interesting arguments Tom makes about VoIP blocking and how the liability is too great for anyone to do this in the future over cable. He could be right but I wonder if broadband providers aren’t coming up with ways to offer levels of bandwidth and in effect making us pay to have the QoS needed to guarantee 911 and other calls will have acceptable quality. I get the feeling that in this way service providers could effectively tax VoIP service that is provided by others.
Cable companies could block ports but as Tom says there is significant risk in doing so. I think Tom is probably right on this issue but I don’t expect it to go away any time soon.