Primary test boards are means provided for quickly locating faults as they occur in outside toll plant; their use results in considerable economies by reducing out-of-service periods and by permitting repairs to be made when their cost is slight; equipment developed by Bell Laboratories.


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    Title :

    Primary toll test boards


    Additional title:

    Bell Laboratories Rec


    Contributors:

    Published in:

    Publication date :

    1935


    Size :

    5 pages


    Remarks:

    Diagrams


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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