Brief description of method of routing traffic through toll exchange; description of equipment; control positions; through positions; route information circuits.


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    Title :

    The new toll exchange, London


    Additional title:

    Post Office Elec. Engrs. Jl


    Published in:

    Publication date :

    1928


    Size :

    7 pages


    Remarks:

    18 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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