ADSL

ISP & telecomnetworking

Asymmetric Digital Subscriber Line: broadband over the existing telephone pair by frequency division - voice below ~4 kHz, data above, a DSLAM terminating the data side at the exchange. Asymmetric because downstream gets most of the spectrum. Its arrival made home connections always-on.

The technology that let the same copper carry the internet full-time - the beginning of POTS's end.

Also known as: asymmetric digital subscriber line

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