I am new to this forum and hope this post is in the right place.

Firstly, I am a beginner in C# and would like to improve my knowledge. There is a guide that gives detailed information about building an own softphone application in C#. I began to follow the steps provided and it seems helpful but the lack of experience resulted that I could not succeed. Here is the guide I am referring to: http://www.voip-sip-sdk.com/p_272-ho...-sdk-voip.html

Could you help me and give tips how should I start?

Thanks for your answers.