Light Reading has one VoIP executive calling Vonage “parasitic.” In the same story they draw attention to XTEN possibly working with CallVantage…..hmmmm. Speaking of XTEN, their Eyebeam client was used to beam back an IETF two way telecom video chat with folks who were in Minneapolis for the IETF meetings while VON was going on. I was very impressed with the quality. Belkin is also using XTEN’s softphone, but unlike Vonage, they’re using X-PRO with a really sweet frontend and an enhanced, tricked out back end.