Publication: State Railways of the Kingdom of Yugoslavia G.D. No. 23999/33.
Printery of the State Railways in Subotica, 1933.
The State Railways of the Kingdom of Yugoslavia, effective from January 1, 1934, issues No. 81, Regulations for the Telegraph and Telephone Service (administrative-manipulative part) Edition, G.D. No. 23999/33, in domestic traffic.
Excerpt from the content:
General provisions: Use of the telegraph and telephone, confidentiality of telegrams, types of telegraph stations, division, priority. Composition, submission, and equipment of telegrams: format and composition, submission of telegrams and phonograms, record-keeping, composition, dispatch, and reports. Morse writing device and its use: Parts of the Morse device, key, relay, typewriter, compass (circuit indicator), lightning-rod plate, and maintenance. Abbreviations in telegraph service: For the mobile service of passenger and freight vehicles. Telephone service: Purpose, telephone device, phonogram equipment, calling and answering, telephone schedules, the “noon” signal.
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