![This is what a dial up modem connection looks like on the spectrogram (DTMF handshake and call). : r/interestingasfuck This is what a dial up modem connection looks like on the spectrogram (DTMF handshake and call). : r/interestingasfuck](https://external-preview.redd.it/U5_P66DkBS5diUU5m2PW83x05G4rZ_v6wCFv_0W6M8s.png?width=640&crop=smart&format=pjpg&auto=webp&s=95ce4fc32bc972847c68066e102a5079321dc578)
This is what a dial up modem connection looks like on the spectrogram (DTMF handshake and call). : r/interestingasfuck
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AGPTEK A02 8GB MP3 Player, 70 Hours Playback Lossless Sound Music Player, Supports up to 128GB, Rose Gold
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![Stream dial-up modem connecting to internet sound by KPwatershed | Listen online for free on SoundCloud Stream dial-up modem connecting to internet sound by KPwatershed | Listen online for free on SoundCloud](https://i1.sndcdn.com/artworks-000469013643-899k7p-t500x500.jpg)