http://netvouz.com/cmastro/tag/sip?feed=rss cmastro's bookmarks tagged "sip" on Netvouz https://www1.pbxes.com/index_e.php virtual PBX · hosted PBX · CRM on demand · SaaS · VoIP · SIP cmastro Mon, 28 Jun 2010 16:04:37 GMT http://www.counterpath.com/ cmastro Sun, 20 Jan 2008 22:00:01 GMT http://www.minisip.org/ cmastro Sun, 20 Jan 2008 21:57:12 GMT