Jake Ludington of Mediablab decided to take on a unique project at home. He took his existing phone wiring and converted it to Voip.

I had a revelation during a trip to the drugstore a few blocks from my house. The phone wiring in the house could be terminated at my Linksys Phone Adapter the same way the phone company brings their lines to the house and ties in to all the internal wiring of the house. Both scenarios route all the wiring in the house back to a central office. The traditional landline service routes underground or to a pole along the street back to the CO while the VoIP method connects to my router headed for the servers at Vonage. This same concept should also work for other VoIP providers, although Vonage is the only one I tested.

Jake continues by giving you a step by step on how he wired his house for VoIP. If you're bored this weekend, you may want to try it yourself by following the article
[via Gizmodo].