I have been on Face Time many times before, now it is saying Face Time Failed every time I try to connect to someone. It doesn't even ring but automatically says failed. I don't know how to get it started again.
Within the FaceTime app, try FaceTime->Turn FaceTime off and then turn it back on and try to connect. If that doesn't work, then go to FaceTime->Preferences and next your Apple ID, click Sign Out and then sign back in and try to connect again..