V.90 modem handshake diagram

[pne]

The Sound of the Dialup: an Example Handshake by Oona Räisänen (2500×1301px JPEG, cc-by-sa 3.0)

via dotaturls

A fascinating, annotated image of what a modem handshake (V.90, apparently) looks like when split up into frequences (is that called a spectrogram?), and what the individual bits mean.

A pity that my modem days were so long ago that I don’t

Comments

[wildernesscat]

You could never correlate the sounds to the diagram. It all happened extremely fast. Faster than the diagram suggests, I am afraid.