Is there a box you can buy that plugs into your phone line and you could program to selectively screen calls?

Question by sandiegojoe420: Is there a box you can buy that plugs into your phone line and you could program to selectively screen calls?
I have not been able to find anything like this for the average consumer. I have seen high end PBX systems that will do it, but nothing small, simple and cheap. Has anyone ever heard of anything like this?

Best answer:

Answer by Cali
Comcast lets you program numbers that you want to turn away and it gives them a prompt saying the number you are calling is not accepting calls at this time.

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