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【国外标准】 IEEE/ISO/IEC-Telecommunications and exchange between information technology systems -- Requirements for local and metropolitan area networks -- Part 3: Standard for Ethernet AMENDMENT 2: Physical layer and management parameters for power over Ethernet over 4 pairs

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  • IEEE/ISO/IEC 8802-3:2021/Amd2-2021
  • 定价: 192元 / 折扣价: 164
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The scope of this project is to augment the capabilities of the IEEE Std 802.3 standard with 4-pair power and associated power management information. The project will augment the methodology for the provision of power via balanced cabling to connected Data Terminal Equipment with 802.3 interfaces. Optional augmented power limit will be made available for certain structured cabling systems. Improvements introduced for 4-pair systems, excluding raising the power limit, are optionally enabled for 2-pair systems. Compatibility with existing equipment will be maintained.

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    IEEE/ISO/IEC 8802-3:2021/Amd2-2021

  • 标准名称:

    IEEE/ISO/IEC-Telecommunications and exchange between information technology systems -- Requirements for local and metropolitan area networks -- Part 3: Standard for Ethernet AMENDMENT 2: Physical layer and management parameters for power over Ethernet over 4 pairs

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