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１ 前言桐乡市广电局（台）在１９９７年完成了全市２４个乡镇有线广播电视光缆联网工程的同时，实现了和地市省光缆网的连接，形成了国家信息网络的雏形。联网之后随之而来的ＣＡＴＶ“进村入户”问题是技术、设备投资重点。因为县（市）级广电局（台）面对的绝大多数用户是
1 Introduction Tongxiang Radio and Television Bureau (Taiwan) in 1997 completed the city’s 24 towns and villages cable radio and television cable network project at the same time, the city and the province achieved fiber optic cable connection, formed the prototype of the national information network. After the networking CATV “village home” problem is the technology, equipment investment focus. Because the county (city) level radio and television bureau (Taiwan) to face the vast majority of users is