"Infiltrate their block"? I'm not sure what you mean by that. If you want to hurt BTL, I appreciate your emotion, but I'm not sure it is constructive.
The techy solution is to use a third party proxy to "tunnel" your VoIP traffic through standard UDP/TCP ports (i.e. port 80 http used for web traffic). With Skype, this proxy configuration exists in the app although there are no major services advertising out there... YET. If you are using Vonage, this would require your Vonage ATA adapter to be reconfigured to use a standard port (much harder). This being said, if you are having problems with either service, use Google to search for a workaround. There are likely going to be new ways to get around ISP blocking every day.
Bottom line is BTL is going to have to wake up one of these days. Sure they need to develop their own VoIP product, but they need to make it compelling to us consumers. They cannot supress competition, they need to put a package together that makes so much sense that we all stop using the alternatives. Give us a Internet/Voice/Email/Hosting package for a reasonable price and voila, you've got a happy/growing customer base.
High speed access means more tourism, more long-term stays for telecommuters, better education and so on. The net is a utility, the applications and content one wishes to communicate are one's choice. If voters don't make this an issue, then we better prepare for BTL to make a lot more choices on what we can see or hear.
Imagine BTL blocking access to the UDP or PUP websites?!?! Imagine BTL reading your emails and IM conversations!?!
The tools they are using to block VoIP are the same tools used to track, log and report on content. ISPs that have attempted to do this in US/EU have been slammed and now part of their PR approach is to stress privacy...
My two cents.
PS My Vonage works perfectly, I have never had a problem. I cannot say the same for my BTL land line...