That is part two, adding real teeth to spoofing a legitimate number. Basically on confirmation that a provider allowed such a call to be made on the US PSTN wou

That is part two, adding real teeth to spoofing a legitimate number. Basically on confirmation that a provider allowed such a call to be made on the US PSTN would result in all their numbers being blocked from the US PSTN until they could prove they had fixed the problem.