Equipment of International Standard Electric Co., in which by individual selection any station on same telephone line can call, directly, any other on that line, without controller; it is used on line Eskilstuna-Oxeloesund and has to cover demand for system not disturbed by power lines, electric railway, etc.; new types of apparatus have been introduced into system of which more detailed description is given.
Intercall selector system on the Swedish state railway
Elec. Communication
Electrical Communication ; 8 , n 1
1929
9 pages
8 Figs.
Aufsatz (Zeitschrift)
Englisch
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