![This is What a Dial Up Modem Connection Looks Like on the Spectrogram (DTMF Handshake and Call) - Truth or Fiction? This is What a Dial Up Modem Connection Looks Like on the Spectrogram (DTMF Handshake and Call) - Truth or Fiction?](https://dn.truthorfiction.com/wp-content/uploads/2022/04/21112522/f100a3682c3d2b981539578bfcc08c23-600x314.jpg?p=133771)
This is What a Dial Up Modem Connection Looks Like on the Spectrogram (DTMF Handshake and Call) - Truth or Fiction?
![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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