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Some Phases of Railroad Telegraph and Telephone Engineering
1921
Transactions of the American Institute of Electrical Engineers
OF PAPER Statement of size of N. Y. C. Lines telegraph and telephone plant and variety of engineering problems involved. Telephones used almost exclusively for train dispatchinig, not so general for message work, but growing. Automatic telephones used. Extensive local and long distance lines and switchboards. Telegraph system reaches all stations. Pole line is basis of plant, increasing in strength to meet safely the loads to which subjected. Railroad employs wire chiefs.
doi:10.1109/t-aiee.1921.5060709
fatcat:ly7dy72qoreh5etiw2zcr77q7e