For those using Debian/Ubuntu (and anybody else is welcome of course),
there is a mini-DebConf in Paris this weekend:
http://fr2012.mini.debconf.org/
There is a presentation at 16:00 about Debian's role in establishing an
alternative to Skype, this will look at some of the packages available
on the upcoming Debian 7 (wheezy), and strategic ways of deploying them
to build a genuinely free and open cloud for real-time communications.
There is no registration fee - all welcome