Spam never reaches anyone
Robocalls get politely hung up on, and blocked numbers don't even get a conversation.
Spam
Calls Third Ring screened out, and numbers you've blocked. Blocked numbers get hung up on before they waste a minute.
Screened calls
800-555-0123
Extended warranty robocall
Block list
800-555-0123
Warranty robocall
Blocking here stops them from reaching Third Ring. To stop them ringing your own phone first, block the number on your phone too.