英語翻譯
是BEC商務(wù)英語的：整篇文章關(guān)于國際電話通信的
One technique,known as "ring-back",involves giving a customer in,say,Paris a free telephone to a computerized switch in America.When the customer calls,the switch automatically calls him back and puts him through to his American destination.Since the call technically originates with the switch,France Telecom's monopoly on outgoing calls remains unbeoken but the caller in Paris is charged American rates