英语翻译
是BEC商务英语的:整篇文章关于国际电话通信的
Onetechnique,knownas"ring-back",involvesgivingacustomerin,say,ParisafreetelephonetoacomputerizedswitchinAmerica.Whenthecustomercalls,theswitchautomaticallycallshimbackandputshimthroughtohisAmericandestination.Sincethecalltechnicallyoriginateswiththeswitch,FranceTelecom'smonopolyonoutgoingcallsremainsunbeokenbutthecallerinParisischargedAmericanrates