> A robocall doesn’t look any more shady than a normal call from a receiving carrier’s perspective; whatever solution they come up with will have tons of false positives.
Doesn't that undermine a major premise of the OP's post? That one should assume corruption, because it's technically easy to filter robo calls and carriers don't do it only because they love the sweet, sweet, robo call inter-exchange fees?
It sounds like filtering robo calls would require cooperation not only among telcos, but also with the VoIP providers that originate these calls.
Doesn't that undermine a major premise of the OP's post? That one should assume corruption, because it's technically easy to filter robo calls and carriers don't do it only because they love the sweet, sweet, robo call inter-exchange fees?
It sounds like filtering robo calls would require cooperation not only among telcos, but also with the VoIP providers that originate these calls.