Dial-up modems connected computers to internet services through ordinary telephone lines. During setup, the modem converted data into audible signals and performed a handshake with another modem, producing the recognizable sequence of dialing, beeping, static, and high-pitched tones. The noise became closely associated with home internet access during the 1990s and early 2000s. Although broadband largely replaced dial-up, creators still use the sound as instant shorthand for obsolete computers, slow connections, technological nostalgia, and comically delayed thinking.