What type of Internet connection uses telephone lines to transmit data?

Digital Subscriber Line (DSL) is a type of Internet connection that utilizes existing telephone lines to transmit data. It allows for high-speed Internet access while still enabling standard telephone services over the same line simultaneously. DSL operates by modulating digital data over the analog signals used by telephone lines, which is possible due to the use of higher frequency channels.

This technology provides significantly greater speeds compared to traditional dial-up connections, as it maintains a continuous connection to the Internet and does not require a connection to be made and dropped like dial-up services. DSL is particularly advantageous in urban and suburban areas where telephone infrastructure is already in place, making it a widely available choice for users looking for a reliable Internet connection.

In contrast, fiber-optic connections use light signals sent through glass fibers and do not utilize telephone lines. Satellite Internet relies on satellite communication to provide access, which can introduce higher latency. Broadband is a general term that encompasses various forms of high-speed Internet connections, including both DSL and fiber-optic but does not specifically refer to the use of telephone lines.