Hello, I an new to programming and would like to get some help. Thought to develop an own application and finally found an article that might help me. Title of the article: 'Working with SDP in VoIP SIP calls' (http://www.voip-sip-sdk.com/p_89-sdp-sip-calls-voip.html) In a nutshell the page describes an overall about SDP and how it works with an SDK called Ozeki SDK in order to create own applications. Since I am a novice programmer I need your help to understand the source code explanation because to be honest it is not clear for me :( I would really appreciate your feedback and suggestions.