Phone service today still use very outdated signalling system named SS7. This is centralized system, so if you have some country-wide service, then there should be some single switch station that will route all calls to that service.
It is not like internet, when system allow point-to-point connections through the shortest route, when connection from one subnetwork does not goes further than closest router.
Reason why that retarded SS7 is not abandoned long ago is a big mistery. Something like if cabmans didn't abandon theri horses and cabs when everybody else already switched to cars.
If the system is archaic, then it likely has basic redundancies across that wide of an area, thousands of miles, so how could it be that centralized with one line down? Seems technologically impossible.
But we are talking about a public infrastructure, built over a period of time, that is suppling the length of Nevada to South Dakota to Texas to Florida. Our electrical grid does not even do that. There are hundreds of internet service providers between those points.
Not that complex.
Phone service today still use very outdated signalling system named SS7. This is centralized system, so if you have some country-wide service, then there should be some single switch station that will route all calls to that service.
It is not like internet, when system allow point-to-point connections through the shortest route, when connection from one subnetwork does not goes further than closest router.
Reason why that retarded SS7 is not abandoned long ago is a big mistery. Something like if cabmans didn't abandon theri horses and cabs when everybody else already switched to cars.
If the system is archaic, then it likely has basic redundancies across that wide of an area, thousands of miles, so how could it be that centralized with one line down? Seems technologically impossible.
Because one line down severs the connection that supplies multiple sources. It's probably one of the most technologically possible setups.
But we are talking about a public infrastructure, built over a period of time, that is suppling the length of Nevada to South Dakota to Texas to Florida. Our electrical grid does not even do that. There are hundreds of internet service providers between those points.
Yes, and fortunately for electricity it can travel through multiple channels easily. Information does not have that luxury.