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什么是宽带网?宽带网的概念是由两部分组成的。一是骨干网要求是宽带的,二是,接入网要有一定速率以上的带宽。从技术上说,所谓宽带(Broadband)是指在同一传输介质上,可以利用不同的频道进行多重的传输,并且速率在原级(1.54Mbps)以上。因此基于有线电视的 Cable Modem 技术、基于普通电话线路的 DSL 技术及基于卫星通信的 Dlrect PC 技术都是宽带技术的典型。业内人士对宽带网的传输速率约定俗成的定义是至少应达到2Gbps。
What is a broadband network? Broadband network concept is composed of two parts. First, the backbone network requirements are broadband, and second, the access network must have a certain rate of bandwidth. Technically, the so-called broadband (Broadband) refers to the same transmission medium, can use different channels for multiple transmission, and the rate of the original level (1.54Mbps) above. Therefore, Cable Modem technology based on cable television, DSL technology based on ordinary telephone line and Dlrect PC technology based on satellite communication are all typical of broadband technology. Industry insiders generally agree on the transmission rate of broadband network is defined as at least 2Gbps.