Unified Communications Definitions

  • G

    G.723.1

    G.723.1 is a standard for digital communications that employs 16-bit pulse-code modulation (PCM) at 5.3 or 6.3 kilobits per second (Kbps) with an input sample rate of 8 kilohertz (kHz)... (Continued)

  • G.729

    G.729 is a standard for Internet Protocol (IP) private branch exchange (PBX) vendors, as well as for the public switched telephone network (PSTN)... (Continued)

  • gatekeeper

    A gatekeeper is a management tool for H.323 multimedia networks.

  • greenfield deployment

    In networking, a greenfield deployment is the installation and configuration of a network where none existed before, for example in a new office.

  • H

    H.245

    H.245 is a protocol for the transmission of call management and control signals in packet-based networks using H.323 equipment.

  • hairpinning

    In general telecommunication, hairpinning is returning a message from an origin endpoint back in the direction it came from as a way to get it to its destination endpoint.

  • hop off

    Hop off is a term used in telecommunications that refers to a point at which a signal or call leaves a network and moves to another network.

  • hop on

    In telecommunications, hop on refers to a point at which a signal or call enters a network from another network.

  • hundred call second or centum call second (CCS)

    The hundred call second -- also known as the centum call second (CCS) -- is a unit of telecommunications traffic density that is the equivalent of one call (including call attempts and holding time) in a specific channel for 100 seconds in an hour.

  • hyperconnectivity

    Hyperconnectivity is a state of unified communications (UC) in which the traffic-handling capacity and bandwidth of a network always exceed the demand... (Continued)

  • I

    IAX (Inter-Asterisk Exchange Protocol)

    IAX (Inter-Asterisk Exchange Protocol, pronounced "eeks") is a communications protocol for setting up interactive user sessions... (Continued)

  • ILEC (incumbent local exchange carrier)

    An ILEC (incumbent local exchange carrier) is a telephone company in the U.S. that was providing local service when the Telecommunications Act of 1996 was enacted.

  • Indefeasible Right of Use (IRU)

    In telecommunications, Indefeasible Right of Use (IRU) is the effective long-term lease (temporary ownership) of a portion of the capacity of an international cable.

  • Information Kit: Voice over IP

    What is voice over IP (VoIP)? Expert advice: VoIP certification, Implementing VoIP in a small business, Using VoIP at home

  • instant messaging (IM or IM-ing or AIM)

    Instant messaging (sometimes called IM or IMing) is the ability to easily see whether a chosen friend or co-worker is connected to the Internet and, if they are, to exchange messages with them.

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