DSL, or Digital Subscriber Line, refers to a type of high-speed internet technology that uses traditional copper telephone lines to transmit digital data. There are several synonyms for DSL, including xDSL, which encompasses all variations of DSL technology such as ADSL, VDSL, and SDSL. Another synonym for DSL is high-speed internet or broadband, which refers to any internet connection that offers faster speeds than traditional dial-up or satellite connections. Other synonyms for DSL include dedicated internet, which refers to a connection that is reserved solely for a specific user or organization, and asymmetrical digital subscriber line (ADSL), which refers to a specific type of DSL connection where the download speed is faster than the upload speed.