One item that may help Vonage's defense is if they remove their slogan "The Broadband Phone Company". It will be very difficult for them to argue in a court of law that they aren't a phone company and shouldn't be regulated as such when their own website labels them a Phone Company.
One also has to realize that while VoIP is niche today and doesn't have the reliability and uptime of the PSTN this is bound to change. The problem is that any legal precedent set today has to take into the account the larger implications as VoIP grows in market share.
Yes, the marketing pukes have decreed that Vonage has to pretend that it's a direct competitor to the RBOCs, and that means that Vonage is a little less-than-honest about 9-1-1, it seems....
Too bad. Over hyping hurts so many good ideas....
Calvoiper -- VoIP--the death knell of remaining voice monopolies!