You can make FaceTime calls directly from Apple TV or answer incoming audio or video calls.
Make sure your iPhone or iPad is set up to use FaceTime.
Go to Settings on your iPhone or iPad, tap FaceTime, then turn on FaceTime.
Sign in to FaceTime with your Apple Account, if you haven’t already.
Go to the FaceTime app , select a contact (or more than one contact for a group call), then select FaceTime.
Tip: To make an audio-only call, on the remote, then , select Add People, select one or more contacts from your contacts list, then select “Add people.”
Turn on live captions (available in the U.S. and Canada only): Select Start a FaceTime call or Add reactions with hand gestures during a FaceTime call on Apple TV