A call from Chile to Spain had to be radioed over the Andes and the Caribbean to New York, across the Atlantic by cable, and over telephone wires through Europe to Madrid.

• 如果要从智利与西班牙通话，就得先用无线电越过安底斯山脉和加勒比海，到纽约中转，由电缆通过大西洋，然后再通过电话线经欧洲大陆通马德里。