From a users point of view it would be easier to register with the local phone company so instead of the normal buzz for ringing the caller hears the message "If you are telemarketer hang up" --- "If you are telemarketer hang up" ... Now the there is no doubt when a telemarketer violates your privacy. The system works from the moment you register. No more excuses like "not enough time to process registration". The local phone company also records the phone number of the caller together with the fact that the warning was on at the time of the call. Now more loop holes, you can sue right away.