Ajit Pai recently announced the FCC is pushing carriers towards this type of system. https://arstechnica.com/tech-policy/2018/11/ajit-pai-slams-sprint-charter-

Ajit Pai recently announced the FCC is pushing carriers towards this type of system. https://arstechnica.com/tech-policy/2018/11/ajit-pai-slams-sprint-charter-and-centurylink-for-poor-robocall-effort/ https://arstechnica.com/tech-policy/2018/11/ajit-pai-slams-s... > "Under the SHAKEN/STIR framework, calls traveling through interconnected phone networks would be 'signed' as legitimate by originating carriers and validated by other carriers before reaching consumers," Pai's press release explained. "The framework digitally validates the handoff of phone calls passing through the complex web of networks, allowing the phone company of the consumer receiving the call to verify that a call is from the person supposedly making it."