- DSL is defined as an abbreviation that stands for digital subscriber line which is defined as the way a computer connects to the Internet at high speeds using telephone lines.
An example of DSL is the phone service that might be down when your Internet connection isn’t working.
Plugging in the DSL.
DSL definition by Webster's New World
dsl - Computer Definition
A high-speed connection to the Internet, can provide from six to 30 times the speed of 56k modem technology without needing very expensive equipment on the end-user side. Furthermore, DSL uses existing land lines in a user’s home, allowing users to talk on the telephone line while connected to the Internet. As with cable modem technology, service providers have to upgrade their telephony networks to provide this service. In addition, the distance between the user’s endpoint and the telephone exchange must not be longer than a few miles. For this reason, rural areas will continue to be underserved by high-speed Internet connections through DSL. Because DSL uses ATM, a layer-2 cell-switching fabric, it is vulnerable to crack attacks.
Graham, R. Hacking Lexicon. [Online, 2001.] Robert Graham Website. http://www.linuxsecurity.com/resource_files/documentation/hacking-dict.html.
(1) See domain-specific language.
(2) (Digital Subscriber Line) A technology that significantly increases the digital capacity of ordinary telephone lines (the local loops) into the home or office. DSL speeds are based on the distance between the customer and telco central office. There are two main categories. Asymmetric DSL (ADSL) is used for Internet access, where fast downstream is required, but slow upstream is acceptable. Symmetric DSL (SDSL, HDSL, etc.) is designed for connections that require high speed in both directions. DSL provides "always-on" operation. At the telco central office, DSL traffic is aggregated in a unit called the DSL Access Multiplexor (DSLAM) and forwarded to the appropriate ISP or data network. DSL arrived in the late 1990s with more versions and alphabet soup than most any other new transmission technology. See PPPoA and PPPoE.