Digital subscriber line - Wikipedia
https://en.wikipedia.org/wiki/Digital_subscriber_line
Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines.
DSL | networking technology | Britannica
https://www.britannica.com/technology/DSL
Alternative Title: digital subscriber line. DSL, in full digital subscriber line, networking technology that provides broadband (high-speed) Internet connections over conventional telephone lines.
Verizon DSL Plans and Availability | DSL Internet Service | What is DSL?
https://www.verizon.com/info/dsl-services/
DSL (digital subscriber line) is a type of technology that connects you to the internet over a telephone network. Verizon's DSL gives you a dedicated internet access line from our central office to your...