随着国际电信市场的迅速发展和各国 电信市场的开放，各国的核心网络建设均初具规模，从本可满足当前通信的需求，电信运营向多元化方向发展。电信竞争的焦点从长途骨干网转移到本地接入网，突出的矛盾体现在接入网方面，即用户与核心网络的连接部分。 在宽带网络建设中，主要 With the rapid development of the international telecommunications market and the opening up of the telecommunications markets in various countries, the core network construction in all countries has begun to take shape. From a demand that can meet the current communications needs, telecommunications operations have been diversified. The focus of telecommunications competition from the long-distance backbone network to the local access network, highlighting the contradictions in the access network, that is, the user and the core network connection part. In the construction of broadband networks, the main