ITU-T G.996.2 PDF

This Recommendation specifies line testing for use on xDSL lines. This Recommendation contains annexes that describe specifications for single-ended line testing (SELT), dual-ended line testing (DELT) and metallic line testing (MELT). Separate annexes describe physical medium dependent (PMD) and processing functions for SELT, DELT and MELT. An informative appendix is also included describing SELT application models. In this Recommendation, one or more of the line testing (LT) functional blocks may, but are not required to, be the same as the xDSL transceiver unit (xTU) functional block.