Digital Subscriber Line (DSL) - Definition

DSL stands for “Digital Subscriber Line” and describes a telecommunications and Internet access service technology that enables high-speed data transmission via conventional telephone lines.

It is a broadband transmission technology that enables the efficient use of existing copper lines. DSL can transmit large amounts of data in a shorter time. It also enables the simultaneous transmission of data and voice over the same telephone line without compromising the quality of telephone calls. DSL can be configured asymmetrically, which means that the transmission rates for download and upload are different. Symmetrical configurations offer the same transmission rates in both directions. There are other variants of DSL, e.g. ADSL (Asymmetric DSL), SDSL (Symmetric DSL), VDSL (Very High DSL) and others. DSL does not require manual dial-up as it establishes a permanent connection to the Internet.

DSL can therefore improve access to broadband Internet in many households and companies and is a widely used technology for fast Internet access.

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