SS7 and TDM may be phased out but phone numbers and phone calls will still exist. It seems like the replacement protocols (SIP?) are still copying SS7 security flaws exactly, with STIR/SHAKEN as a bandaid on top instead of a fundamental fix.

Yes, the ability to present CNAM in SIP will continue to be a thorn for ages.

Until my half dozen robocalls per day end I don’t believe this will actually help. I guess I’ll find out in 11 days.