eli5: The “handshake” between dial-up modems and why it made those sounds
In: 294
basically a negotiation between two devices and exchanging of information about their capabilities. it allowed to use the optimum speed/settings that both had in common. this image will explain exacty what happened and when:
https://oona.windytan.com/posters/dialup-final.png
> why it made those sounds
you could actually silence your line to not hear it. but the default was sound on.
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