Cable
Cable television brought cable into everyone’s home, and now they include voice and Internet services on the same coax cable.
DSL
DSL (Digital Subscriber Line) uses a pair of copper wires to provide Internet access over the same lines as a traditional telephone service.
ISDN
ISDN (Integrated Services Digital Network) was the precursor to DSL, and also used a pair of copper wires to provide high-speed dialup Internet service.
Dialup
Dialup lines traditionally used the same network as the telephone service, and you would only need a modem on each end of the phone line to provide digital communication.