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SDSL is a rate-adaptive digital subscriber line (DSL) variant with T1/E1-like data rates (T1: 1.544 Mbit/s, E1: 2.048 Mbit/s). It runs over one pair of copper wires, with a maximum range of 10,000 feet (3,000 m). It cannot co-exist with a conventional voice service on the same pair as it takes over the entire bandwidth. [1]
This is a sortable list of broadband internet connection speed by country, ranked by Speedtest.net data for March 2024, [1] and with M-Lab data for June 2023 [2] Country/Territory Median
Choosing service providers or interfaces based on theoretical maxima is unwise, especially for commercial needs. A good example is large scale data centers, which should be more concerned with price per port to support the interface, wattage and heat considerations, and total cost of the solution.
Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines. [1] In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology, for Internet access.
EarthLink logo from 1998–2015. EarthLink was founded in July 1994 by Sky Dayton when he was 23 years old. [9] Dayton was convinced of the need for a simple, user-friendly dial-up Internet service provider (ISP) after spending an entire week trying to configure his own computer for Internet access. [10]
Very high-speed digital subscriber line (VDSL) [1] and very high-speed digital subscriber line 2 (VDSL2) [2] are digital subscriber line (DSL) technologies providing data transmission faster than the earlier standards of asymmetric digital subscriber line (ADSL) G.992.1, G.992.3 (ADSL2) and G.992.5 (ADSL2+).
Altice USA (also known as Optimum); AT&T Internet; Charter Communications (also known as Spectrum); Comcast High Speed Internet (also known as Xfinity); Consolidated Communications (including FairPoint Communications)
Red area is the frequency range used by normal voice telephony , the green (upstream) and blue (downstream) areas are used for ADSL. With commonly deployed ADSL over POTS (Annex A), the band from 26.075 kHz to 137.825 kHz is used for upstream communication, while 138–1104 kHz is used for downstream communication.