Brief description of existing toll exchange at Norwich Street and its operating procedure; new toll exchange, G.P.O. South; effect on toll-area traffic; equipment; cabling and circuits.


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    Title :

    London toll exchange


    Additional title:

    Elec. Communication


    Contributors:

    Published in:

    Publication date :

    1928


    Size :

    13 pages


    Remarks:

    23 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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