Question

Terra lives in a very rural area where the cable TV lines are not equipped for internet access. Using the phone line is her only option. In what way does Terra connect to the internet?

Answer 1

By using a dial‑up modem over the plain telephone network (PSTN). Her computer’s modem dials an ISP’s modem, negotiates a PPP/SLIP connection, and carries data over the phone line (typical max ~56 kbps).