Summary

Amendment 1 to Recommendation ITU-T Y.1731 provides the following modifications:

–          A new OAM, "ETH-CSF", is introduced in clauses 7 and 9.

–          The consideration of interoperability between ETH-LT (2006) and ETH-LT (2008) is added in clause 7 and Annex B.

–          The clarification of ETH-LCK transmission is added in clause 7.

–          Some definitions in clause 5 are moved to clause 3.

–          Revision of the Introduction, clauses 2, 6, 8, Annex A and Appendix I.