Estacado is going to release an Open Source SigComp stack - this is an technique used for compression of SIP messages. It's good to see this happen - most the stuff needed to build very complex SIP applications is available in open source but this is the first SigComp stack and they are pretty complicated to write.
You can find it at:
Open SigComp
Oddly I had quite a bit more to say about open source but it seem the author of the article "Dial D for Disruption" in Forbes, 04.10.06 http://www.forbes.com/free_forbes/2006/0410/063.html?partner=yahoomag was less interested in that :-) I think the articles is of the view that it is best not consider that telephones and networks are one of the things that the telecom industry sells. If you ignore the telephones and other end user communication devices, and all the things that connect them together regardless of if they are packet or circuit switched, well then call control looks important.
There is a wonderful dumb moment in E911 as point 26 in Business 2.0's dumbest moments in tech - February 1, 2006 where they quote Niklas Zennstrom, co-founder of Skpe as saying
"If there's a burglar in my home, maybe I send an e-mail or a text message to the police instead of making a call."
Now I suspect that Niklas many have been trying to say that in some situations it would be nice to have alternative ways to contact a PSAP and I would agree but we will always want voice as one way, and mostly likely the primary way, to contact a PSAP?
Francois Audet and I are now famous being quoted alongside such people as Paul Mockapetris. Ok, I won't let it go to my head but you can find the worlds most compressed explanation of SIP Identity at:
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