Comment Re:Yet another legal solution to a technical probl (Score 0) 171
Biggest problem is out of country vendors sending national flagged caller id when calling from outside of the country, in to the USA. They can show any domestic number of their choosing by flagging caller id as national instead of international. They won't be able to do that anymore, so all the out of country scam artists will not be able to pretend that they're a legit business in the USA.
Screening off the billing number isn't even an option because of how many things it would break.
Anyone with an access t1 that covers multiple clients who have separate privileges would be screwed, because the billing number is what they use to screen off of.