Description of new London Toll A and B exchanges; it is shown how large proportion of toll circuits have been converted to automatic switching.


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    Title :

    Replacement of London Toll exchanges


    Additional title:

    Post Office Elec Engrs' J


    Contributors:

    Published in:

    Publication date :

    1943


    Size :

    6 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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