In traditional telephoning one can listen to the voice of his interlocutor. But you can easily see his counterpart simply because the invention of video tutorial telephony. Many companies have tried video tutorial telephony and few methods have prevailed. Skype does an extremely good job but since February 2011 Apple is definitely producing FaceTime competition with the top dog.
FaceTime allows video calling on Mac & iOS products. It is the same with which device from the Apple friends and family you videotelefoniert gentleman, iPhone, iPad or Mac pc, everything is possible.
To call from your Mac with facetime on a pc , you need in addition to an Apple account (Apple ID & password) which every Apple users should already have through his iTunes account , the FaceTime App .
Just just like you were called by the nice old phone, it rings on the Macintosh when you get yourself a FaceTime call. Which means you do not have to worry about lacking a call.