Despite their speed, the IDSN, ADSL and HDSL protocols do have limitations.

尽管传输速度快, ISDN 、 ADSL和HDSL协议也都有局限性.

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With HDSL, they can do it in an hour.

用HDSL,安装只要1小时.

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HDSL is the most established of the XDSL technologies.

HDSL是XDSL技术 中最早建成的一种.

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HDSL Technology is one kind of multi - switch - in technology in communication network.

高速数字用户线(HDSL)技术是通信网络多种接入技术中的一种.

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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.

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The benefit of HDSL is that it provides T 1 speed in both directions.

HDSL的优点是在两个方向上提供T1速度.

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The technique uses 16 level TCPAM, and has obvious technical advantages compared with ADSL and HDSL.

该技术采用16电平TCPAM, 与ADSL,HDSL技术相比具有明显的技术优势.

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It compares the technological economy ratio and practical applicability of HFC, HDSL, ADSL and FTTC.

比较了高比特率数字用户线(HDSL) 、 不对称数字用户线(ADSL)、光纤到路边(FTTC)、光缆同轴混合网的技术经济比及实用性.

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It describes the current standards for HDSL equipment manufactureand relative Droducts.

概述了现行有关标准及相应产品.

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