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1背景目前,有线电视网络规模庞大,除了有线电视公司经营的公共网络,还有各企事业单位、宾馆、酒店的内部闭路电视系统。现在,拥有这些有线电视网络的单位都希望通过运营这个网络,实现互联网接入数据通信,获得
1 Background Currently, CATV networks are large-scale, with the exception of the public networks run by cable companies and the internal CCTV systems of enterprises, hotels, and hotels. Organizations that own these cable networks now expect to gain access to Internet access data communications by operating this network