Which protocol is used to establish connections over digital subscriber lines?

The protocol used to establish connections over digital subscriber lines is DSL, which stands for Digital Subscriber Line. DSL enables high-speed internet access through standard telephone lines, allowing for data transmission at much higher speeds than traditional dial-up connections. It accomplishes this by dividing the frequency of the line into separate channels for voice and data, which makes it possible to use the phone and access the internet simultaneously.

Understanding the context of DSL is essential, as it highlights its significance in providing internet connectivity in many residential and commercial environments, especially during the initial roll-out of broadband services.