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ITU-T K.86 (11/2011)

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Method for measuring longitudinal conversion loss (9 kHz - 30 MHz)
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.
Approval date: 2011-11-13
Provisional name:K.lcl
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 5
Further details: Patent statement(s)
Development history
Ed. ITU-T Recommendation Status Summary Table of Contents Download
1 K.86 (11/2011) In force