ADSL's Copper Miracle: How the telecom industry turned the doomed copper telephone wire into a usable asset with an asymmetric transmission profile and discrete multitone modulation, which provided the early fast (by 2000 standards) always-on Internet connection. (31 min)

https://www.youtube.com/watch?v=phoeSk-qY8s

#Internet #Telecom #Broadband #TelecomHistory