Telephone toll system in region within radius of about 50 mi. from Chicago; 21 toll centers have been established at which are handled toll traffic of their own exchanges and 95 other exchanges in area; descriptions of toll plan and toll plant, methods of handling toll calls, volume of traffic handled, etc.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Telephone toll plant in the Chicago region


    Additional title:

    Bell Telephone Laboratories -- Reprint


    Contributors:
    Smith, B. (author) / West, G.B. (author)


    Publication date :

    1929


    Size :

    16 pages


    Remarks:

    7 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Telephone toll plant in the Chicago region

    Smith, B. / West, G.B. | Engineering Index Backfile | 1928


    Telephone toll plant in the Chicago region

    Smith, Burke / West, G. B. | IEEE | 1928


    Toll telephone traffic

    Fowle, Frank F. | Engineering Index Backfile | 1914


    Toll-telephone question in Finland

    Talvitie, Y. | Engineering Index Backfile | 1934


    Testing toll and rural telephone lines

    Twigg, G.E. | Engineering Index Backfile | 1930