Cable modems are just beginning to emerge.
有线电视Modem刚刚开始兴起。
Cable modems are used to connect high-speed data pipes terminated in the cable operator's head end to the HFC infrastructure.
cable modem用来把端接在有线电视运营商主设备上的高速数据通道接到HFC基础设施上。
Cable modems translate Ethernet packets into radio frequency signals that are mapped into an unused 6-MHz television channel slot and broadcast to all the homes by the HFC node.
cable modem把以太网包转换成射频信号,该信号被映射到一个未用的6MHz电视信道隙由HFC节点广播到所有家庭。
Cable modems promise connection speeds of 10Mbps to 40Mbps, but cable companies have to convert their systems, especially the numerous retransmitters along the route, to bidirectional traffic.
电缆调制解调器有希望连接10Mbps至40Mbps速度的线路,但有线电视公司还必须将它们的系统,尤其是沿线部署的大量转发器,转变成双向信息流。