Search for: [Abstract = "A VoIP is a very hot topie today. Telecommunication always has been a very hermetic industry controlled by huge corporations. It is hard to imagine that a well known bank will buy PBX from an unknown or a small company. A couple years ago an open\-source software had very little to do with telecommunication systems at all. Right now we are witnesses of a revolution in a telecommunication industry, because huge revolution in the world Internet network is a fact. Today real time media like voice and video can be transported by a packet network like Internet and appear to be real and serious competitors for a traditional telecommunication industry. An important thing is QoS \(Quality of Service\), which cause so many problems with Voice over IP. Even so there are many enthusiastic people who create open source VoIP software. Most famous Open Source PBX project is Asterisk project."]

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