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http://www.grynx.com/index.php/projects/voip-for-free-with-the-sipura/1
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http://dev2dev.bea.com/pub/a/2005/09/introduction-sip-part-1.html
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http://mobile.newsforge.com/article.p...amp;tid=104&tid=132&pagenum=1
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http://tapioca-voip.sourceforge.net/wiki/index.php/Tapioca
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http://openmbd.redirectme.net:8000/verona
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http://www.rowetel.com/blog/?p=27
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http://www.howtoforge.com/voip_qos_traffic_shaping_iproute2_asterisk
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http://www.hackszine.com/blog/archive...ip_calls_wi.html?CMP=OTC-7G2N43923558
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http://www.reseaucitoyen.be/wiki/index.php/OpenMcu
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http://groups.google.com/group/low-cost-ata/topics