摘要
本文介绍了Internet电话的概念、优缺点及其产品与分类,并提及VoIP技术和Internet电话的发展方向。
The concept, advantages and disadvantages of the Internet telephone are introduced. The VoIP technology and development trend of Internet are presented.
出处
《世界电信》
1999年第5期36-37,48,共3页
World Telecommunications