Think of it: the lowest common denominator in being digital is not your operating system, modem, or model of computer. It's a tiny piece of plastic, designed decades ago by Bell Labs' Charles Krumreich, Edwin Hardesty, and company, who thought they were making an inconspicuous plug for a few telephone handsets. Not in their wildest dreams was Registered Jack 11 — a modular connector more commonly known as the RJ-11 — meant to be plugged and unplugged so many times, by so many people, for so many reasons, all over the world.
RJ-11
WIRED 6.04 - RJ-11[web.media.mit.edu]