Earlier quoted context omitted.
Even just giving origin information would help, if the local end of the interconnect ensured calls show the international dial-code as a minimum then that would help; instead we get (in UK) international calls (India, primarily) with caller ID showing a local number (sometimes your own number, I think) ... the interconnect certainly shouldn't be facilitating that.
That's easier said than done. SS7 its the primarily utilized protocol stack nowadays. The PTSN (Public Telephone Switching Network) and the Internet have been combined for a while now. The problematic part of SS7 is it allows for setting arbitrary unauthenticated origination info in the rough equivalent of a "From" field in the initiation process. There are attempts ongoing to attempt to implement a "Web of Trust" la…
Is that incorrect?