• September 21, 2005 21 Sep'05

    CDSL (Consumer Digital Subscriber Line)

    Also see our Fast guide to DSL. CDSL (Consumer Digital Subscriber Line) is a version of Digital Subscriber Line (DSL) service, trademarked by Rockwell Corp.  Continue Reading

  • September 21, 2005 21 Sep'05

    A-Law

    A-Law is the standard codec (compression/decompression) algorithm for pulse code modulation (PCM) from the ITU-T (the Telecommunication Standardization Sector of the International Telecommunications Union).  Continue Reading

  • September 21, 2005 21 Sep'05

    whiteboard

    A whiteboard is a non-electronic variation of the traditional "rewriteable" schoolroom blackboard, but is white instead of black and of a material that can be written on with colored markers (known as dry erase markers).  Continue Reading

  • September 21, 2005 21 Sep'05

    gigapop (gigabit point-of-presence)

    Gigapop is short for gigabit point-of-presence, an access point to Internet2, the network collaboration between universities and partners in industry and government to develop advanced Internet technologies and applications such as telemedicine and ...  Continue Reading

  • September 21, 2005 21 Sep'05

    ping sweep (ICMP sweep)

    A ping sweep (also known as an ICMP sweep) is a basic network scanning technique used to determine which of a range of IP addresses map to live hosts (computers).  Continue Reading

  • September 21, 2005 21 Sep'05

    NSFNET

    NSFNET was a network for research computing deployed in the mid-1980s that in time also became the first backbone infrastructure for the commercial public Internet.  Continue Reading

  • September 21, 2005 21 Sep'05

    mu-Law

    Mu-Law is the standard codec (compression/decompression) algorithm for pulse code modulation (PCM) from the CCITT (Consultative Committee for International Telephone and Telegraph).  Continue Reading

  • September 21, 2005 21 Sep'05

    E-ZPass

    E-ZPass is a toll collection system in the northeastern U.S. that uses RFID technology to allow a driver to pass through a tollbooth and pay the toll without stopping the vehicle.  Continue Reading

  • September 21, 2005 21 Sep'05

    GLONASS (Globalnaya Navigatsionnay Sputnikovaya Sistema)

    GLONASS (for Globalnaya Navigatsionnay Sputnikovaya Sistema), the Russian Federation's Global Navigation Satellite System (GNSS), is the Russian version of a global positioning system.  Continue Reading

  • September 21, 2005 21 Sep'05

    information theory

    Information theory is a branch of mathematics that overlaps into communications engineering, biology, medical science, sociology, and psychology.  Continue Reading

  • September 21, 2005 21 Sep'05

    HELLO packet

    In the Open Shortest Path First (OSPF) communications protocol - which enables network routers to share information with each other, a HELLO packet is a special packet (message) that is sent out periodically from a router to establish and confirm ...  Continue Reading

  • September 21, 2005 21 Sep'05

    hoot-n-holler

    In telecommunications, a hoot-n-holler is a dedicated "always on" connection used for two-way business-to-business voice communication.  Continue Reading

  • September 21, 2005 21 Sep'05

    Freephone

    In the U.K., Freephone is a type of Number Translation Service (NTS) that allows a phone user to call a non-geographic number beginning with 0800 or 0500 without incurring a charge.  Continue Reading

  • September 21, 2005 21 Sep'05

    multi-tapping

    Multi-tapping is an older procedure used to enter text using a telephone keypad.  Continue Reading

  • September 21, 2005 21 Sep'05

    Home Location Register (HLR)

    The Home Location Register (HLR) is the main database of permanent subscriber information for a mobile network.  Continue Reading

  • September 21, 2005 21 Sep'05

    circular mil

    The circular mil is a unit of area used especially when denoting the cross-sectional size of a wire or cable.  Continue Reading

  • September 21, 2005 21 Sep'05

    line doubler

    A line doubler is an electronic device that converts analog or digital television (TV) video signals into a format suitable for display on a computer monitor.  Continue Reading

  • September 21, 2005 21 Sep'05

    DTTV (digital terrestrial television)

    DTTV (digital terrestrial television, sometimes also abbreviated DTT) is digital television (DTV) broadcast entirely over earthbound circuits.  Continue Reading

  • September 21, 2005 21 Sep'05

    Bel

    In electronics and communications, the Bel expresses the logarithmic ratio between two levels of signal power, voltage, or current.  Continue Reading

  • September 21, 2005 21 Sep'05

    Shannon's Law

    Shannon's Law, formulated by Claude Shannon, a mathematician who helped build the foundations for the modern computer, is a statement in information theory that expresses the maximum possible data speed that can be obtained in a data channel.  Continue Reading

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