Hello all,

I’m new at this VoIP and I’m learning it. I have found a site called Ozeki VoIP SIP SDK which supports sample programs in VoIP technology. Recently I’m trying VoIP examples in ASP. If you are interested in it you can check it here http://www.voip-sip-sdk.com/p_203-asp-net-sip-voip-client-voip.html. The trial version of it is free so anyone can try it. For me it was a great start to learn more about VoIP technology and ASP.

Regards,

Frank

You can't make a VoIP call with a pure ASP.NET application. The problem is HTTP is a stateless protocol that drops connections as soon as data transfer has occurred. VoIP is a real time application where you need to have a constant connection between the various parties (client-pbx-destination, usually).

As a result, you would need to extend your ASP.NET application with either a ClickOnce .NET Windows Forms Application or other component that runs a local application on the user's machine.