I'm actually in the process of writing an article on Popular Telephony's Peerio product, which you can think of as an enterprise-oriented peer-to-peer (P2P) version of the popular consumer-oriented Skype.
Is Peerio a Skype-killer? Well, read my article in Internet Telephony Magazine to find out. It will be out in a little while.
In the meantime, I came across this news release that Logicom, the #2 largest phone manufacturer in France has inked a deal with Popular Telephony to develop a feature-rich prototype Peerio-intelligent IP DECT (DECT = cordless for us non-Europeans) telephone.