How can High-Speed Internet be so much faster than Dial Up Internet access when they both use a phone line to transmit data?
Dial Up modems send their signals through the public switched telephone network, the same one that connects ordinary telephones. High-Speed Internet modems or routers “piggyback” their signals on top of the voice signal on the same copper wire. On the phone company’s premises, the signals get split, with voice calls being sent to the public switched telephone network and High-Speed Internet transmissions being sent to the Internet.
