Now want to achieve a similar to the skype software,
Technical solution to use open source system, the function itself is IM + VoIP system,
So ready to do with integrated way, by integrating account, we ask everyone to use open source system, how to combine good

IM: ready to use the Actor IM
VOIP: ready to use freeswitch then and the matching business management system with asterbilling
Such a combination of good excuse me? Integration is difficult