Corrigendum 1 to Recommendation ITU-T G.992.3 (2009) contains: Corrections to test parameters definitions and accuracy. Editorial change to clause on interleaver.
ITU-T G.992.3 CORR 1-2009 history
2009ITU-T G.992.3 CORR 1-2009 Asymmetric digital subscriber line transceivers 2 (ADSL2) Corrigendum 1