Digital subscriber line and Phone line

Digital subscriber line noun - A generic name for digital lines that are provided by telephone companies to their local subscribers and that carry data at high speeds.

Phone line and digital subscriber line are semantically related. In some cases you can use "Phone line" instead a noun phrase "Digital subscriber line".

Phone line noun - A telephone connection.

Digital subscriber line and phone line are semantically related. Sometimes you can replace phrase "Digital subscriber line" with "Phone line", this phrases are similar.