How is the Sofia SIP Stack, it is open sourced, developed by Nokia and claims to be compliant with RFCs http://sofia-sip.sourceforge.net/ ----- Original Message -----
From: "Carlos Alvarez" <carlos at televolve.com> Cc: voiceops at voiceops.org Sent: Monday, August 23, 2010 11:56:16 AM Subject: Re: [VoiceOps] "...but it works with Packet8"
Alex Balashov wrote:
This is extremely unlikely, unless they inherited one via licensing from an acquisition.
Developing a SIP stack is a surprisingly capital-intensive endeavour, at least, when it comes to working out interop issues and bugs, as well as natural race conditions arising from a literal interpretation of RFC 3261. All that testing and R&D is hard to afford. That's why the only good SIP stacks have been around for at least ten years (though, from this it does not follow that just because a SIP stack has been around for ten years means it's any good).
I wouldn't say it's trivial to do it, but one of our partners has a 100% custom-written and RFC-compliant stack and softphone which goes to great lengths to penetrate any NAT--they guarantee it. Licensing starts at
$42,000, however for a company the size of Packet 8 that would be trivial.
-- Carlos Alvarez TelEvolve 602-889-3003
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