Yes that was a first attempt at addressing this, but it's still imperfect and not universally adopted, even though both the US and Canada have required adoption

Yes that was a first attempt at addressing this, but it's still imperfect and not universally adopted, even though both the US and Canada have required adoption since 2021. The FCC for example still exempts "small rural phone providers" I believe? Adoption is growing though, but it's hard to say how fast and by who. It's honestly a cost/benefit thing.. Changing fundamental infrastructure at telcos is super hard and expensive and most will not do it until they are forced to by law.