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美国艾利斯特公司(Anixter)Level 7布线标准被国际 ISO/IEC 布线标准委员会采纳,将做为全新6类业界标准的基础。艾利斯特公司自1989年就开始参与非屏蔽式双绞线(UTP)规格的制定工作,其 Level 3、4和5规格分别被 TIA/EIA 委员会采纳,成为3类、4类和5类标准。6类标准和相关的 Class E Link 要求传输速率达到200MHz,是5类标准的两倍。同时,6类标准能保证未来的技术,如超过百米的干兆以太网(GigabitEthemet)1000Base-T。Level 7是艾利斯特公司最新推出的 Levels’97布线性能规格计划的一部分。该计划为100MHz 以上的非屏蔽式双绞线(UTP)确定了新的性能规范,是先进应用系统(如intranet 技术、立体影像、多媒体编程、桌面视像、电脑辅助设计及宽带视像等)必要的参数,Levels’97计划依 ANSI/TIA/EIA-586-A 商业楼电信布线标准而制订。该标准规定了
Anixter Level 7 cabling standards adopted by the International Committee of ISO / IEC Cabling Standards will serve as a basis for the new six industry standards. Astrasite has been involved in the development of unshielded twisted pair (UTP) specifications since 1989 and its Level 3, 4, and 5 specifications were adopted by the TIA / EIA committee as Category 3, 4, and 5 standard. Category 6 standards and related Class E Link require transfer rates up to 200MHz, which is twice the Class 5 standard. At the same time, Category 6 standards promise future technologies such as GigabitEthemet 1000Base-T in excess of 100 meters. Level 7 is part of ALEstep’s new Levels’97 cabling performance specification. The program defines new performance specifications for Unshielded Twisted Pair (UTP) beyond 100MHz and is an advanced application system (such as intranet technology, stereo video, multimedia programming, desktop video, computer-aided design and broadband video, etc.) The necessary parameters, Levels’97 program, are based on ANSI / TIA / EIA-586-A Commercial Building Telecommunications Cabling Standard. The standard provides