Hi at all, I need to create a voip application ( like msn ). What do I need in general ?
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                A: 
                
                
              
            Start by learning about SIP protocol. If you don't want to do everything from scratch, you can take a look at Sofia-SIP library. Also, looking at some OpenSource Softphone projects (like Telephone) might be helpful.
Hope it helps.
                  Pablo Santa Cruz
                   2010-03-20 18:43:49