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Unfortunately there's still lots of reasons a legitimate call wouldn't have attestation, including if it passed over a legacy non-SIP link at any point. That's
by LarsAlereon 3y ago
Unfortunately there's still lots of reasons a legitimate call wouldn't have attestation, including if it passed over a legacy non-SIP link at any point. That's increasingly rare, but not rare enough to flag or block calls without attestation except within a network you know is pure IP. Even then you get edge cases like forwarded calls that people expect to work even when they don't do them right.
- owenversteeg 3y agoSo is there any sort of real deadline or end in sight for spam/scam calls here? Can someone please legislate that if your call does not have attestation then it gets immediately blackholed? Give a deadline and if you aren't compliant then your phone doesn't work. At this point I could not care less if this causes legacy systems or whatever exactly to break; if it kills a few businesses then so be it. Everyone I know in the US has a constant background of spam calls that makes the phone system almost worthless in many cases. We cannot allow critical infrastructure to be held hostage by a few holdouts.