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    I.S. I-ETS 300 004:1992

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    BUSINESS TELECOMMUNICATIONS (BT); TRANSMISSION CHARACTERISTICS AT 2-WIRE ANALOGUE INTERFACES OF A DIGITAL PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX)

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  22-07-2013

    Language(s):  English

    Published date:  31-12-1991

    Publisher:  National Standards Authority of Ireland

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    Table of Contents - (Show below) - (Hide below)

    1 Foreword
    2 Scope
    3 Related standards
    4 Definitions
      4.1 Definitions of interfaces
      4.2 Definition of parameters
    5 2-wire interface specifications
      5.1 Characteristics of interfaces
      5.2 Characteristics of half connections
    Annex A: Test networks for PABX input impedances at
             interfaces K2 and M2
    Annex B: Relative levels for K2 and M22 interfaces
             in dBr
    Annex C: Test networks for PABX input impedances at
             interface L2
    Annex D: Relative levels at interface L2 and M21 in dBr
    Annex E: Test networks for TBRL in different European
             Administrations
    Annex F: Compensation of losses on long or short 2-wire
             lines
    Annex G: Impedance unbalance about earth in different
             European Administrations
    Annex H: Discrimination against out-of-band signals applied
             to the input interface: Signals below 300 Hz
    Annex J: Single frequency noise (dBmO)
    Annex K: Return loss

    Abstract - (Show below) - (Hide below)

    Consists of characteristics for 2-wire interfaces which are involved in 2-wire connections with the public switched telephone network (PSTN).

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn

    Standards Referencing This Book - (Show below) - (Hide below)

    I-ETS 300 006 : AUG 91 BUSINESS TELECOMMUNICATIONS (BT); TRANSMISSION CHARACTERISTICS AT DIGITAL INTERFACES OF A PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX)
    I-ETS 300 005 : AUG 91 BUSINESS TELECOMMUNICATIONS (BT); TRANSMISSION CHARACTERISTICS AT 4-WIRE ANALOGUE INTERFACES OF A DIGITAL PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX)
    I-ETS 300 003 : AUG 91 BUSINESS TELECOMMUNICATIONS (BT); TRANSMISSION CHARACTERISTICS OF DIGITAL - PRIVATE AUTOMATIC BRANCH EXCHANGES (PABXS)
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