Is it possible
Can a person call verizon and have a block put on incoming calls that the number is blocked, so only calls with caller ID available will come thru.
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I'd call and suggest that this is a feature that you want. A good idea. I's available for landlines.
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I may be incorrect, but I seem to recall looking through a customers phone with them- I believe it was a Moto 276 or something- and in the settings you could restrict calls to contact list only. I don't know if all phones have that ability, but it is something you do with the phone, not on the network. I cannot find that option in my own phone, but I am under the impression that some phones will allow you to restrict incoming calls to only numbers you have in your contact list. I am not sure if that is what you are looking for, but it is a possible solution.
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You are correct that is an option in some phones HOWEVER it doesn't work. It was a good thought though.
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in some phones, it transfers the call straight to voicemail, and then the caller would flood the voicemail.
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The number restriction only works for outgoing calls if I'm not mistaken
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