Hello,
There is an article which is titled: Working with SDP in VoIP SIP calls. Basically it is about SDP in connection with an SDK called Ozeki SIP SDK. There are various applications can be built with that solution.
I am looking at the explanation of the source code on this page: http://www.voip-sip-sdk.com/p_89-sdp-sip-calls-voip.html
I am not really familiar with coding so could you please tell if the codes provided need to be changed or just leave them as they are?
Thank you for your attention and answers.