Rýchly posel – od dostavníku až po telefon / telephone history in Czechoslovakia (1946)

po telefon / telephone history (1946) Document is about comunication progress from Horse riding post across telegraph to modern analog telephones and modern analog telecomunication in 1946 and tells how telephone call works in 1946. in czech language… … 1946 Phone telephone telefón call Rýchly posel telecomunication volič ústredna TCOM TMOBILE telekom telekomunikace dokument documentary vývoj historie Tomhas Bell Praha Staromestské náměstí Pražská síť network Prague Czechoslovakia …