| 纵向转换损耗的测量方法（9kHz - 30MHz） |
随着电信业的开放，电信网络的拆分已十分普遍。接入网的拆分扩大了公用接入网电缆内提供服务的运营商的数量。在这一背景下，业务传输性能以及电磁兼容性能均出现了不平衡。电信线路或端口的纵向传输损耗（LCL）是衡量由于连接导线上存在纵向信号造成网络终端产生无用横向信号的程度。
考虑到综合业务数字网（ISDN），ADSL，ADSL2，ADSL2plus，VDSL和VDSL2等宽带业务的频率范围，ITU-T K.86建议书给出了 9 kHz至30 MHz频率范围纵向转换损耗的计算方法，以及拆分情况下允许值的建议。 |
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ITU-T Recommendation |
Status |
Summary |
Table of Contents |
Download |
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1
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K.86 (11/2011)
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In force
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here
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here
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here
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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K Suppl. 3 (10/2015)
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ITU-T K.20, K.21, K.45, K.82 – Additional criteria to protect telecommunication cabling during a power cross event
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In force
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here
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here
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here
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K Suppl. 8 (11/2017)
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Resistibility analysis of 5G systems
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In force
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here
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here
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here
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K Suppl. 9 (05/2019)
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5G technology and human exposure to radiofrequency electromagnetic fields
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In force
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here
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here
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here
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K Suppl. 10 (11/2017)
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Analysis of electromagnetic compatibility aspects and definition of requirements for 5G mobile systems
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In force
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here
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here
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here
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K Suppl. 13 (12/2021)
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Radiofrequency electromagnetic field (RF-EMF) exposure levels from mobile and portable devices during different conditions of use
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In force
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here
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here
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here
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K Suppl. 14 (09/2019)
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The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment
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In force
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here
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here
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here
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K Suppl. 16 (10/2022)
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Electromagnetic field compliance assessments for 5G wireless networks
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In force
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here
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here
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here
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K Suppl. 19 (09/2019)
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Electromagnetic field (EMF) strength inside underground railway trains
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In force
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here
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here
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here
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K Suppl. 29 (07/2022)
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Electromagnetic field strength inside and outside of electric vehicles using wireless power transfer technology
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In force
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here
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here
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here
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| Title |
Approved on |
Download |
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Mitigation measures for telecommunication installations – Chapter 10
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2006
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here
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Mitigation measures for telecommunication installations
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2004
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here
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Earthing and bonding
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2003
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here
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Guide to the use of ITU-T Publications produced by Study Group 5 aimed at achieving Electromagnetic Compatibility and Safety
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2002
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here
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Earthing of telecommunication installations
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1976
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here
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