What Is DSL?

DSL is a generic term for a set of technologies that use the additional 1-MHz bandwidth, apart from the 3-kHz band transmitting voice traffic along the shielded twisted-pair (STP), or copper, connecting a subscriber's telephone and the central office (owned by the provider). The term DSL was derived from the basic integrated services digital network, also known as the ISDN.

DSL is a dedicated link that establishes a direct connection between the customer and the carrier, providing broadband access to the end user through a DSL modem installed at the customer's premises. One end of the DSL connection terminates at the central office of the telephone company. The DSL connection enters the customer premises through a high-pass filter ...

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