Make And Answer Calls
Make a
FaceTime call. Make sure FaceTime is turned on in Settings >
FaceTime, then in FaceTime, tap Contacts and choose a contact.
Tap 
to make a
video call, or tap
to
make an audio call.
Use your voice to start the call. Press and hold the Home button, then say "FaceTime," followed by the name of the person to call.
Want to call again? Tap Recents, then choose a name or number.
Can't take a call right now? When a FaceTime call comes in, you can answer, decline, or choose another option.
See the whole gang. Rotate iPad to use FaceTime in landscape orientation. To avoid unwanted orientation changes, lock iPad in portrait orientation.