Our answer to to answer NO calls without a recognizable Caller ID. All others go directly to AM where no messages are left. Our phone speaks the caller ID so we don't even have to attempt to answer it if the name is not legitimate. After a while when there is no answer or response after repeated attempts to call, you are dropped from their lists. Or have some fun, answer the phone from the political hacks and tell them the opposite of whom you are voting for. It drives the pollsters crazy.