| Method for measuring longitudinal conversion loss (9 kHz - 30 MHz) |
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With the liberalization in telecommunications, unbundling becomes commonplace in telecommunication networks. The unbundling of the access network increases the number of operators that may provide services within a common access network cable. In this context, unbalance is not only related to the transmission performance of the services, but also strongly related to electromagnetic compatibility (EMC) performance of the services. The longitudinal conversion loss (LCL) of telecommunication lines or telecommunication ports is a measure of the degree of unwanted transverse signal produced at the terminals of the network due to the presence of a longitudinal signal on the connecting leads.
Considering the frequency range of broadband services such as integrated services digital network (ISDN), asymmetric digital subscriber line (ADSL), ADSL2, ADSL2plus, very high-speed digital subscriber line (VDSL) and VDSL2, Recommendation ITU-T K.86 presents the method for measuring longitudinal conversion loss for the frequency range from 9 kHz to 30 MHz and presents the suggestion of the admissible value for the unbundling condition. |
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ITU-T Recommendation |
Status |
Summary |
Table of Contents |
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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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K Suppl. 32 (06/2023)
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Case studies of radio frequency- electromagnetic field (RF-EMF) assessment
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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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