Replacing PBXes with Open Source

[Larry Cook]

There is also GNU Bayonne:

http://www.gnu.org/software/bayonne/
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GNU Bayonne, the telecommunications application server of the GNU project, 
offers free, scalable, media independent software environment for development 
and deployment of telephony solutions for use with current and next generation 
telephone networks.
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Here is a slide presentation from 2002 that makes it sound like they want it 
to become a turnkey system for small businesses:

http://www.ukuug.org/events/linux2002/papers/html/sugar/html/slide_1.html

Larry