2011/4/16 Olle E. Johansson oej@edvina.net:
Yes, Kamailio is behind and after focusing so much on the merger of the code I think it would be good to plan some new features for a coming release. The issue is what of all the new SIP features we need.
History-info seems useful for Asterisk, don't know how much it will affect Kamailio.
Gruu, well. I haven't seen many implementations out there.
If the registrar doesn't support GRUU then it doesn't matter whether clients support it or not :) I think GRUU can be really useful.
I can theoretically see a need for it both in NAT situations and IPv6.
Diversion is deprecated.
No, it became RFC 5806 past year:
http://tools.ietf.org/html/rfc5806
Outbound is the final NAT traversal solution - which seems to be getting a lot of traction. Remember that there was very few participants in this SIPit so 50% is not a "market share" - far from it.