SIP rips, especially when its mobile!
[above link is to IETF spec for SIP, for a simple explanation of SIP - see this tutorial]
Stuff like the products from Hotsip are what "mobile-NG" (Next Generation) is all about - effortless real-time communications via voice, IM, video. I wish I had this product (Active Contacts) on my desktop right now, and that it all worked......of course, we most likely have to wait an eternity for telcos to rollout anything half useful like this. The future - and the great promise of SIP - is that all communications become IP based (both voice and data) and that the wider community of budding developers, visionaries and start-ups can offer us useful services in a snitch! (Or we roll our own.)
Active Contacts is the console for all real-time communications - click to chat (IM), click to see, click to talk - any combination of all three with any combination of your buddies, pleasure or business - and do it from any device, anywhere without faffing around to do so - moving seamlessly from mobile coverage to WiFi (which is also the future - more on that later). My juices are flowing at the thought of such useful tools. Sounds like a fantasy doesn't it? This stuff is the future and it is definitely coming. It is what 3G is all about....
Now tie this interesting stuff up with decent pervasive PIM management tools....yes, we could be on to a winner here (notwithstanding that there aren't any decent pervasive PIM tools - but let's discuss that issue later).
There is just so much interesting stuff that can be done with presence technology and SIP, that I have started some new channels on my weblog just to talk about it all.......stay tuned (that's if anyone is out there reading this stuff...) For those of you who still read books, all this stuff is going into my new book (as yet untitled, but "Next Generation Wireless Applications" would be a good working title).
11:29:39 PM 
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