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  2. ADSL - Wikipedia

    en.wikipedia.org/wiki/ADSL

    Asymmetric digital subscriber line (ADSL) is a type of digital subscriber line (DSL) technology, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. ADSL differs from the less common symmetric digital subscriber line (SDSL).

  3. G.992.1 - Wikipedia

    en.wikipedia.org/wiki/G.992.1

    There are 2 competing standards for DMT ADSL - ANSI and G.dmt; ANSI T1.413 is a North American standard, G.992.1 (G.dmt) is an ITU (United Nations Telecom committee) standard. G.dmt is used most commonly today, throughout the world, but the ANSI standard was formerly popular in North America.

  4. ANSI T1.413 Issue 2 - Wikipedia

    en.wikipedia.org/wiki/ANSI_T1.413_Issue_2

    The American National Standards Institute (ANSI) Telecommunications Committee created the first standardized ADSL specifications. They were published as ANSI T1.413-1995 and ANSI T1.413-1998 (sometimes called "issue 2") titled Network and Customer Installation Interfaces — Asymmetric Digital Subscriber Line (ADSL) Metallic Interface.

  5. Digital subscriber line - Wikipedia

    en.wikipedia.org/wiki/Digital_subscriber_line

    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 .

  6. Symmetric digital subscriber line - Wikipedia

    en.wikipedia.org/wiki/Symmetric_Digital...

    A symmetric digital subscriber line (SDSL) is a digital subscriber line (DSL) that transmits digital data over the copper wires of the telephone network, where the bandwidth in the downstream direction, from the network to the subscriber, is identical to the bandwidth in the upstream direction, from the subscriber to the network.

  7. G.992.3 - Wikipedia

    en.wikipedia.org/wiki/G.992.3

    ITU G.992.3 is an ITU (International Telecommunication Union) standard, also referred to as ADSL2 or G.dmt.bis.It optionally extends the capability of basic ADSL in data rates to 12 Mbit/s downstream and, depending on Annex version, up to 3.5 Mbit/s upstream (with a mandatory capability of ADSL2 transceivers of 8 Mbit/s downstream and 800 kbit/s upstream). [1]

  8. Rate-Adaptive Digital Subscriber Line - Wikipedia

    en.wikipedia.org/wiki/Rate-Adaptive_Digital...

    Rate-adaptive digital subscriber line (RADSL) is a pre-standard asymmetric digital subscriber line (ADSL) solution. [1] RADSL was introduced as proprietary technology by AT&T Paradyne, later GlobeSpan Technologies Inc., [2] in June 1996. [3] In September 1999, RADSL technology was formally described by ANSI in T1.TR.59-1999.

  9. G.992.3 Annex L - Wikipedia

    en.wikipedia.org/wiki/G.992.3_Annex_L

    Tones are spaced apart by 4.3125kHz. In the Annex A, L and M frequency standards, POTS (analog PSTN voice) occupies (what would be) tones 0-3, tones 4-7 are reserved for a ‘guard band’, and the upstream DSL transmission band uses tones 8-31 in Annex A and L, or 8-56 in Annex M. In Annex B, ISDN occupies tones 0-31, DSL upstream uses tones ...

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