Digital Subscriber Line

Digital subscriber line (DSL, originally digital subscriber loop) is a family of technologies that provide internet access by transmitting digital data over the wires of a local telephone network. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology. DSL service is delivered simultaneously with wired telephone service on the same telephone line. This is possible because DSL uses higher frequency bands for data separated by filtering. On the customer premises, a DSL filter on each outlet removes the high frequency interference, to enable simultaneous use of the telephone and data.

The data bit rate of consumer DSL services typically ranges from 256 kbit/s to 40 Mbit/s in the direction to the customer (downstream), depending on DSL technology, line conditions, and service-level implementation. In ADSL, the data throughput in the upstream direction, (the direction to the service provider) is lower, hence the designation of asymmetric service. In symmetric digital subscriber line (SDSL) services, the downstream and upstream data rates are equal.

Read more about Digital Subscriber Line:  History, Typical Setup, Protocols and Configurations, Transmission Methods, DSL Technologies

Other articles related to "digital subscriber line, lines, line, subscriber":

Symmetric High-speed Digital Subscriber Line
... Single-pair high-speed digital subscriber line (SHDSL) is a form of digital subscriber line (DSL), a data communications technology that enables faster data transmission over copper telephone lines than a conventional ... or DSL filter, cannot be used to allow a telephone line to be shared by both an SHDSL service and a POTS service at the same time ... Halving the data rate per pair will provide similar speeds to single pair lines while increasing the error/noise tolerance ...
Digital Subscriber Line - DSL Technologies
... The line-length limitations from telephone exchange to subscriber impose more restrictions on higher data-transmission rates ... DSL technologies (sometimes summarized as xDSL) include ISDN Digital Subscriber Line (IDSL), uses ISDN based technology to provide data flow that is slightly ... High Data Rate Digital Subscriber Line (HDSL / HDSL2), was the first DSL technology that used a higher frequency spectrum of copper, twisted pair cables ...
Asymmetric Digital Subscriber Line
... Asymmetric Digital Subscriber Line (ADSL) is a type of digital subscriber line technology, a data communications technology that enables faster data ... At the telephone exchange the line generally terminates at a digital subscriber line access multiplexer (DSLAM) where another frequency splitter separates the voice band signal for the ...
High Speed (disambiguation) - Internet and Telecommunications
... up to three voice channels and data on a copper pair Single-Pair High-speed Digital Subscriber Line (SPHSDSL), a type of DSL technology Very High Speed ...
Internet Access - Technologies - Broadband Access - Digital Subscriber Line (DSL, ADSL, SDSL, and VDSL)
... G.991.2 UDSL VDSL ITU G.993.1 VDSL2 ITU G.993.2 Digital Subscriber Line (DSL) service provides a connection to the Internet through the telephone network ... DSL can operate using a single phone line without preventing normal use of the telephone line for voice phone calls ... DSL uses the high frequencies, while the low (audible) frequencies of the line are left free for regular telephone communication ...

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