Hasta hace unos cuantos años el único medio de otorgar fehaciencia a las comunicaciones era el Telegrama, uno de los primeros servicios de telecomunicaciones electrónicas, antecesor del Télex, teletipo y del SPCM. Curiosamente, este servicio sigue figurando en el catálogo de correos y sigue siendo válido para comunicar mensajes urgentes en cualquier lugar del mundo. […]
June 5, 2013 | Comments »
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