T1s are not analog and they were either invented or starting to be deployed in 1... | Hacker News

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		tenebrisalietum on Oct 9, 2021 \| parent \| context \| favorite \| on: AT&T’s Abandoned Microwave Tower Network (2017) T1s are not analog and they were either invented or starting to be deployed in 1962.

riffic on Oct 9, 2021 [–]

there were previous systems in place before T-carrier:

https://en.wikipedia.org/wiki/Carrier_system

https://en.wikipedia.org/wiki/L-carrier

http://long-lines.net/tech-equip/misc/J-Carrier.html

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