摘要
本文介绍了被叫集中付费业务的定义及其在美国和欧洲的开展情况,在分析其大受欢迎的原因的同时也指出其存在的问题。
The paper describes the service definition and deployment of Freephone in the US and European countries and points out the existing problems while analysing the cause of its popularity.
出处
《世界电信》
1995年第5期35-38,共4页
World Telecommunications
