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  2. ISDN digital subscriber line - Wikipedia

    en.wikipedia.org/wiki/ISDN_digital_subscriber_line

    A new piece of data communications equipment terminates the IDSL connection and shunts it off to a router or data switch. This is a key feature because the overloading of central office voice switches by data users is a growing problem for telcos. The limitation of IDSL is that the customer no longer has access to ISDN signaling or voice services.

  3. Emmanuel Dangana Ocheja - Wikipedia

    en.wikipedia.org/wiki/Emmanuel_Dangana_Ocheja

    In 2005, President Olusegun Obasanjo appointed Barrister Ocheja to serve as the Chairman of the board of directors of the Integrated Data Services Limited (IDSL: A subsidiary of the NNPC).

  4. ISDN - Wikipedia

    en.wikipedia.org/wiki/ISDN

    Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the public switched telephone network. [1] Work on the standard began in 1980 at Bell Labs and was formally standardized in 1988 in the CCITT "Red ...

  5. Single-pair high-speed digital subscriber line - Wikipedia

    en.wikipedia.org/wiki/Single-pair_high-speed...

    Single-pair high-speed digital subscriber line (SHDSL) is a form of symmetric digital subscriber line (SDSL), a data communications technology for equal transmit and receive (i.e. symmetric) data rate over copper telephone lines, faster than a conventional voiceband modem can provide.

  6. ADSL - Wikipedia

    en.wikipedia.org/wiki/ADSL

    A gateway is commonly used to make an ADSL connection. 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.

  7. List of VDSL and VDSL2 deployments - Wikipedia

    en.wikipedia.org/wiki/List_of_VDSL_and_VDSL2...

    This is a list of very-high-bit-rate digital subscriber line (VDSL) and very-high-bit-rate digital subscriber line 2 (VDSL2) deployments.. The term VDSL can either refer specifically to ITU-T G.993.1 (first generation VDSL, officially abbreviated as "VDSL", unofficially also called "VDSL1"), or may be used as an umbrella term for both ITU-T G.993.1 and ITU-T G.993.2 (second generation VDSL ...

  8. High-bit-rate digital subscriber line - Wikipedia

    en.wikipedia.org/wiki/High-bit-rate_digital...

    High-bit-rate digital subscriber line (HDSL) is a telecommunications protocol standardized in 1994. [1] It was the first digital subscriber line (DSL) technology to use a higher frequency spectrum over copper, twisted pair cables.

  9. VDSL - Wikipedia

    en.wikipedia.org/wiki/VDSL

    VDSL2 permits the transmission of asymmetric and symmetric aggregate data rates up to 300+ Mbit/s downstream and upstream on twisted pairs using a bandwidth up to 35 MHz on its latest version. [6] It deteriorates quickly from a theoretical maximum of 350 Mbit/s at source to 100 Mbit/s at 500 m (1640.42 ft) and 50 Mbit/s at 1000 m (3280.84 ft ...