Current DSLAM basically may divide into based on ATM and based on the IP two kind of patterns, but all has some problems, must have to perform to solve, by ADAPTS the market and user's demand.
当前的DSLAM基本上可分为基于ATM和基于IP的两种模式，但都存在一些问题，必须要加以解决，以适应市场和用户的需求。
What's more, as the number of broadband user increased and various kinks of network services emerged, developing larger bandwidth available IP-DSLAM becomes another risk and challenge.
另外，随着全球宽带用户的增加以及各种网络服务的出现，对于宽带接入设备IP - DSLAM的接入带宽提出了更高的要求和挑战。
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