Hello, I have wide area experience in open source technology like php/c++/linux/so files/fusebox AND WINDOW based ASP,COM,DCOM,MTS,VB,VC++,.NET,Flash.
Our expertise in the VOIP based application development including SIP Development. If you like we can show you small demo application.
Please forward me your mail ID so i can forward you project proposal according your current requirement.
SG