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I coded up this simple SIP engine and video phone a few years ago. I realized how easy it is to speak SIP without a lot of classes or abstraction. It is just plain-english SIP. The SIP is copy-pasted from wireshark, and then just does replace of whatever characters need to be changed to make or answer a specific call. I don't program much VOIP any more, and pretty soon I might have thrown away all my hard drives with this code on it. So I figured I would put my work somewhere in case someone needs a SIP video phone. It has been used to make calls as an ActiveX plugin, but it is pretty easy to put inside a Mozilla/Chrome plugin to make browser-based calls from a web page as well. You can drag-drop it as a control into any Windows program in Visual Studio. Do what you want with it, no need to bother me about it.
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