3 ms·
This used to work in the US too. Not sure if it still does.
by StillBored 7y ago
This used to work in the US too. Not sure if it still does.
- techsupporter 7y agoOnly some phone systems in the western part of the US had far-end supervision, so far as I am aware. (This is why movies and TV shows from in and around Hollywood show conversations where the caller hangs up and the callee hears a dial-tone. The phone systems in most of California had only far-end supervision. Tom Scott has a good video on this[0].) Most of the US uses either near-end, where the recipient hanging up will end the call, or both-end supervision, on POTS/landline systems. 0 - https://www.youtube.com/watch?v=bUIiUXvnkUQ https://www.youtube.com/watch?v=bUIiUXvnkUQ - This video was filmed at the excellent Museum of Telecommunications in Seattle, located in a CenturyLink switching office. When travel is available again, I encourage all phone geeks to come here and check it out.