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人们期待已久的六类布线标准，经过十几次草案的完善，终于在今年6月5日的美国通信工业协会TR-42委员会会议上正式颁布了。该六类标准将成为TIA/EIA-568B标准的补充附录，并被正式命名为TIA/EIA-568B.2-1。丽特网络公司（IBDN）早在1998年年初就已经推出了六类产品———IBDN24
The long-awaited six-cabling standard was finally promulgated at the meeting of the TRIA Committee of the National Telecommunications Industry Association on June 5 this year after more than a dozen drafts were completed. The six categories of standards will become TIA / EIA-568B standard supplement, and was officially named TIA / EIA-568B.2-1. As early as the beginning of 1998, Lite Internet Corporation (IBDN) has launched six types of products - IBDN24