SIP Gets Interesting
Tello could well be an inflection point for the SIP protocol. Om Malik has an excellent summary.
[tease]
Tello is essentially composed of three parts – a database server which has directory and rules information; a SIP proxy server and an IM Proxy server. In its most audacious form, Tello could allow large corporations to simply bypass PSTN all together, and make SIP-based free calls over the Internet as easy to initiate as the 10-digit calling of today. At some point in the future it could initiate calls to PC-IM clients as well. The key to all this a desktop client, that for now works with Windows XP and Blackberry devices. The client, Tello claims will allow worker bees to collaborate and work on spreadsheets for example.
[via tech.memeorandum]