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http://www.howtoforge.com/voip_qos_traffic_shaping_iproute2_asterisk
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http://blog.vrplumber.com/1317
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http://blog.vrplumber.com/1275
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http://blog.vrplumber.com/1297
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http://www.reseaucitoyen.be/wiki/index.php/OpenMcu
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http://mobile.newsforge.com/article.p...amp;tid=104&tid=132&pagenum=1
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http://www.mobicents.org-a.googlepages.com/products_sip_servlets.html