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This is What a Dial Up Modem Connection Looks Like on the Spectrogram (DTMF Handshake and Call) - Truth or Fiction?
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Dial Up Modem Handshake Sound Spectrogram : U2UBER : Free Download, Borrow, and Streaming : Internet Archive
Museum of Portable Sound - What the Sounds of a Dialup Modem Mean #handshake #dialup #modem #communication #internet #throughput #ratenegotiation #telephone #cultureofsound #soundbeyondmusic | Facebook
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