Summary

Amendment 1 to Recommendation ITU-T G.993.5 (2010) covers:

������������ Pilot sequence length of multiple of 4 (new functionality).

������������ Frequency dependent pilot sequence in the downstream direction (new functionality).

������������ Definition of upstream FEXT coupling coefficients (Xlinpsus) (new functionality).

������������ Improvement of clarity and consistency of wording (corrigendum).