Filter calls in FaceTime on Mac
In FaceTime on your Mac, you can silence calls from unknown callers or calls identified as spam, and move those calls to separate lists in your call history.
Go to the FaceTime app
on your Mac.
Choose FaceTime > Settings, then click FaceTime.
Do any of the following:
Silence calls from unknown numbers: In the Call Filtering section, select the checkbox next to Silence Unknown Callers. Your Mac silences calls from unknown callers and sends them to voicemail. (Calling and data rates may apply.)
Filter unknown numbers: In the Call Filtering pulldown menu, choose All Unknown Numbers or Only International Numbers.
Turn on call filtering for calls identified as spam: Select the checkbox next to FaceTime Spam. Suspected spam calls are silenced, moved to the Spam list in your call history, and hidden from the Lock Screen.
If you don’t want to receive any calls through FaceTime, sign out of FaceTime on each Apple device. See Sign in to or out of FaceTime.
Tip: You can also set up communication with your contacts only to avoid calls from unknown callers.