摘要
介绍一种以现有的ＣＡＴＶ网为下行通道，ＰＳＴＮ网为上行信道向用户提供简单ＶＯＤ业务和多媒体信息业务的方案。
A scheme providing simple VOD and information services for the users is described, in whichthe existing CATV network is used as the down link and PSTN network is used as the up link.
出处
《电视技术》
北大核心
1999年第5期22-24,共3页
Video Engineering
