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  • PD 6571:1992

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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    TEXT FOR BS 6789-2:1992 'APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS - PART 2: SPECIFICATION FOR APPARATUS WITH LOUDSPEAKING FACILITIES'

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  02-08-2013

    Language(s):  English

    Published date:  01-01-1992

    Publisher:  British Standards Institution

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

    Committees responsible
    Preface
    Foreword
    Section one. General
    1 Scope
    2 Abbreviations, definitions and notation
    3 General requirements and test conditions
    4 Information to be provided by the supplier
    5 Electrical network connection methods (speech
        apparatus)
    Section two. Electrical characteristics of apparatus
    6 Apparatus on-line (non-signalling state)
    7 Transmission process
    Appendices
    A General conditions of test
    B Methods of test
    Tables
    1 Not assigned
    2 Limits of sending sensitivity for line lengths up to
        and including 3 km
    3 Limits of sending sensitivity for line lengths in
        the range over 3 km to 7.5 km
    4 Limits of noise levels for noise criterion curve
        NC 15
    5 Data required to calculate Z
    6 Psophometric weighting characteristics
    Figures
    1 Not assigned
    2 Measurements of free field sound pressure used in
        the determination of sending sensitivity
    3 Physical test arrangement for determining the
        sending characteristics
    4 Limits of sending sensitivity for line lengths up to
        and including 3 km
    5 Limits of sending sensitivity for line lengths in
        the range over 3 km to 7.5 km
    6 Physical test arrangement for determining the
        receiving characteristic
    7 Noise criterion curve NC 15
    8 Dimensions of test table
    9 Position of LST
    10 The local telephone system
    11 D.C. excited test circuit
    12 Axes used in the determination of free field
        conditions for 1 m radius sphere

    Abstract - (Show below) - (Hide below)

    Specifies requirements for loudspeaking facilities incorporated in apparatus for connection to a single exchange line or to systems connected to the public switched telephone network. Not applicable to apparatus for connection to shared service lines nor to apparatus for connection between a TJF of a PBX and the PSTN lines of a PBX. Only applies where the apparatus containing the loudspeaking facility also gives either integral handset telephony or the capability of associated handset telephony. Coverage includes: abbreviations, definitions and notation; apparatus on-line (non-signalling state); transmission process. Also includes appendices, tables and diagrams.

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

    Committee TCT/2
    Development Note Supersedes 91/94132 DC. (08/2005) Inactive for the new design. (01/2011)
    Document Type Standard
    Publisher British Standards Institution
    Status Withdrawn

    Standards Referenced By This Book - (Show below) - (Hide below)

    PD 6569-2:1992 DRAFT STANDARD TO MATCH TO AND WORK WITH ETS 300 001/NET4 "APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATIONS OPERATORS" - SPECIFICATION FOR APPARATUS WITH LOUDSPEAKING FACILITIES

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

    BS 5940-1:1980 OFFICE FURNITURE - SPECIFICATION FOR DESIGN AND DIMENSIONS OF OFFICE WORKSTATIONS, DESKS, TABLES AND CHAIRS
    BS 1088 & 4079:1966 SPECIFICATIONS FOR PLYWOOD FOR MARINE CRAFT
    BS 6312:1982 SPECIFICATION FOR PLUGS FOR USE WITH BRITISH TELECOMMUNICATIONS LINE JACK UNITS
    BS 6789-2:1984 APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATIONS OPERATORS - SPECIFICATION FOR APPARATUS WITH LOUDSPEAKING FACILITIES
    BS 4778(1979) : LATEST QUALITY VOCABULARY
    BS 6450-4:1993 PRIVATE BRANCH EXCHANGES FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS - SPECIFICATION FOR PORTS
    BS 3593:1963 RECOMMENDATION ON PREFERRED FREQUENCIES FOR ACOUSTICAL MEASUREMENTS
    BS 6317:1982 SPECIFICATION FOR SIMPLE TELEPHONES FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATION OPERATORS
    BS 2475:1964 SPECIFICATION FOR OCTAVE AND ONE THIRD OCTAVE BAND PASS FILTERS
    BS 6789-1:1984 APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO PUBLIC SWITCHED TELEPHONE NETWORKS RUN BY CERTAIN PUBLIC TELECOMMUNICATIONS OPERATORS - SPECIFICATION FOR GENERAL REQUIREMENTS
    BS 6305:1982 SPECIFICATION FOR GENERAL REQUIREMENTS FOR APPARATUS FOR CONNECTION TO THE BRITISH TELECOMMUNICATIONS PUBLIC SWITCHED TELEPHONE NETWORK
    BS 6789-6.2:1989 APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO CERTAIN PUBLIC SWITCHED TELEPHONE NETWORKS - SPECIFICATION FOR SERIES CONNECTED APPARATUS - APPARATUS HAVING LESS THAN MAXIMUM ALLOWABLE IMPAIRMENTS
    BS 6789-6.1:1986 APPARATUS WITH ONE OR MORE PARTICULAR FUNCTIONS FOR CONNECTION TO CERTAIN PUBLIC SWITCHED TELEPHONE NETWORKS - SPECIFICATION FOR SERIES CONNECTED APPARATUS - APPARATUS HAVING MAXIMUM ALLOWABLE IMPAIRMENTS
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