Issue of number of identifications in railroad telephone network system and selector equipment in automatic long distance communication; process explained on basis of network systems, equipment, etc, carried out by Siemens and Halske; practice outlined is approved by German authorities.
Kennzahlenvergebung in Eisenbahn-Fernsprechnetzen
Kennzahlenvergebung in Eisenbahn-Fernsprechnetzen
Zeitschrift fuer Fernmeldetechnik ; 18 , n 4
1937
6 pages
Article (Journal)
German
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