Spot on, ab-so-flippin lutely. I never could understand why we should spend more time money and effort to get less quality over IP. Today, I already have a UI that lets me start a conversation in any medium I like, IM, Phone, Conference, Video, and then escalate to include other mediums, and I don't have to choose ahead of time (book in other words). It doesn't matter whether the other people are IP, PSTN or mobile - perfect thanks.