A radio-based transatlantic telephone service was started in 1927, charging £9 (about $45 USD, or roughly $550 in 2010 dollars) for three minutes and handling around 300,000 calls a year.
一项基于无线电的跨大西洋电话服务在1927年开始，每三分钟收费9英镑（约45美元；约为2010年的550美元），每年处理大约30万通电话。