For what I understood, the protocols are open, but you can't join in the network without a private key signed by Apple :). It seems to use fairly standard proto

For what I understood, the protocols are open, but you can't join in the network without a private key signed by Apple :). It seems to use fairly standard protocols though: http://en.wikipedia.org/wiki/FaceTime#Standards http://en.wikipedia.org/wiki/FaceTime#Standards