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宽带接入网是国际上近年提出的一种新概念,它除了包含用户线传输系统和复用设备外,还包括数字交叉连接设备和用户/网络接口设备。在ITU-T第13研究组的最新建议G.963中,宽带接入网被定义为本地交换机(LE)与用户端设备(TE)之间的实施系统,其目的是综合考虑本地交换局、用户环路和终端设备,通过有限的标准化接口将各种用户的需求接入业务节点。
Broadband access network is a new concept proposed in recent years in the world. It includes not only subscriber line transmission system and multiplexing equipment but also digital cross-connect equipment and user / network interface equipment. In Recommendation G.963 of ITU-T Study Group 13, broadband access networks are defined as the implementation system between the local exchange (LE) and the customer premise equipment (TE) and are designed to take the local exchange, User loop and terminal equipment, through a standardized interface to a limited variety of user needs access to business nodes.