I am a beginner developer and I am planning to build softphone in C# language. After a little research I found this site www.voip-sip-sdk.com/p_266-how-to-build-a-softphone-using-sip-and-voip-voip.html
Has anybody tried it yet? I would appreciate if you can give me a little review of it!
Thanks in advance! Have a nice day!