Call barring is different from call forwarding (redirecting a call) or blocking a contact (phone-level block). Barring is often enforced by your mobile carrier, not just your phone.
Automatically rejects calls from private numbers or hidden IDs [5]. Why Use Call Barring? barring calls meaning
Usually refers to a feature on your handset (like an iPhone or Android setting) where the phone ignores the call [1, 5]. Call barring is different from call forwarding (redirecting