xdsl需要分组交换。
Very-high-speed digital subscriber line(VDSL) is the fastest access technology of the xDSL family.
甚高速数字用户线（VDSL）是数字用户线（DSL）家族中速率最高的接入方式。
POTS requires a special modulation and conversion schemes with HDSL, unlike other XDSL variations.
与其它的XDSL变型不一样，用HDSL时，POTS需要特殊的调制和转换方案。
Because it is digital, XDSL can divide the total bandwidth in various ways, which in part accounts for all the flavors of XDSL.
由于是数字的，所以XDSL能够以不同方法分隔整个带宽，这是人们喜欢XDSL的部分原因。
Simple introduce the XDSL accessing network technology based on the copper thread, and has carried on the more detailed introduction to SDSL's technology.
对基于铜线的接入网技术XDSL做了简单的介绍，并对SDSL技术进行了较详细的介绍。
This unique feature enables an ISP (Internet Service Provider) to provide IP-TV portals using different Internet addresses for its cable users versus its xDSL users.
这个独特的功能允许Internet服务提供商(Internet ServiceProvider, ISP)为其有线用户和xDSL用户使用不同的Internet地址提供IP - tv门户。
This unique feature enables an ISP (Internet Service Provider) to provide IP-TV portals using different Internet addresses for its cable users versus its xDSL users.
这个独特的功能允许Internet服务提供商(Internet ServiceProvider, ISP)为其有线用户和xDSL用户使用不同的Internet地址提供IP - tv门户。
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