I hear you

[Sameer Verma]

Just came across ihu or I Hear You (http://ihu.sourceforge.net/), a
peer-to-peer audio app. As compared to Asterisk, it takes the PBX
dependency out of the picture. You do need to know the end point's IP.
I haven't tried it on the XO as yet, but sounds like a good fit (no
pun intended).

cheers,
Sameer
-- 
Dr. Sameer Verma, Ph.D.
Associate Professor of Information Systems
San Francisco State University
San Francisco CA 94132 USA
http://verma.sfsu.edu/
http://opensource.sfsu.edu/