Siemens & Halske yakavambwa naWerner von Siemens naJohann Georg Halske musi wa12 Gumiguru 1847. Zvichienderana neteregirafu, kugadzirwa kwavo kwakashandisa tsono kunongedzera kutevedzana kwemavara, panzvimbo pekushandisa Morse kodhi. Kambani, yainzi Telegraphen-Bauanstalt von Siemens & Halske, yakavhura musangano wayo wekutanga musi wa12 Gumiguru.Muna 1848, kambani yakavaka yekutanga terevhizheni refu-refu muEurope; 500 km kubva kuBerlin kuenda kuFrankfurt am Main. Muna 1850, munin'ina wemugadziri, Carl Wilhelm Siemens, akazozivikanwa saSir William Siemens, akatanga kumiririra kambani muLondon.
Makore 1855