论文部分内容阅读
在美国5类数据线缆的规范问世已经有相当长的一段时间了。随着电信技术的发展,许多新的通信及数据电缆被开发出来。国际标准化委员会ISO/IEC,欧洲标准化委员会CENELEC和北美的工业技术标准化委员会TIA/EIA都介入了新标准的制定。但是,相应的统一线缆标准仍旧没有颁布。因此,Cat.5、Cat.5+(增强的Cat.5)、Cat.6及Cat.7类标准的概念,在通信业内存在着一定程度的混乱。另外,由于网络应用的标准化组织。(例如IEEE802或ATM论坛)也从网络应用角度影响着线缆的规范。这些网络应用的标准化组织为更高速的网络应用制定了标准。这些新的网络应用甚至可以在
It has been quite a while since the advent of the Category 5 data cable in the United States. With the development of telecommunication technology, many new communication and data cables have been developed. ISO / IEC, CENELEC and TIA / EIA in North America are all involved in the development of the new standard. However, the corresponding unified cable standard is still not promulgated. Therefore, the concepts of Cat.5, Cat.5 + (Enhanced Cat.5), Cat.6 and Cat.7 standards have some degree of confusion in the communications industry. In addition, due to the standardization of web applications. (Such as IEEE802 or ATM Forums) also affect the specification of the cable from the point of view of network applications. The standardization organizations in these web applications set the standard for faster web applications. These new web apps can even be there