alt Hacker News> legacy TDM systems
Easy fix. It should be opt-in to accept a call that is routed through one of these. I know they allow it so some grandma in rural France that still uses a dial phone on a copper line that hasn't been touched since 1962 can call her son in New York, but for the rest of us who are not in that situation, we can just blacklist all those calls and lose nothing. This would even fix spam for the people who opt-in, because so few people have grandmas in rural France that it's not worth it for the spammers to bother anymore.
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> Easy fix. It should be opt-in to accept a call that is routed through one of these.
Easier (and correct) fix: Telecoms operators should not be permitted to provide transit to a call that's routed through one of these.
> I know they allow it so some grandma in rural France that still uses a dial phone on a copper line that hasn't been touched since 1962...
This doesn't make sense. Even my inexpensive Mikrotik switches can augment packets with the ID of the port that they originated from. I do not believe for even a second that Telecoms Grade switching equipment is unable to do the same. The fact that that grandma can send and receive calls tells you that both that that equipment exists and that it knows what port her phone is connected to.
I am, more in tune with "just get it over with" than ever. Ipv6? 25 years of this crap? should have just said, Jan 1 2001, all routers must support 64 bit ipv4 addresses. Like the chrome HTTPS switch over, JUST DO IT
It is opt/in. There's three categories (according to that defcon talk): call originates from the number it says it does, call originates from our network but we're not sure about the number, and call came to us unverified (only allowed by regulation on legacy links).
Now, operators of those legacy links make A LOT of money for operating them since they carry 100% of the country's spam traffic, and they're not going to shut them down just because you think they should. The government would have to make them do it and they'll pretend upgrading is super expensive.