Summary

Amendment 1 to Recommendation ITU-T G.987.1 (2010) includes:

1)          text describing the operation of XG-PON with IEEE 1588;

2)          use cases for XG-PON frequency and time-of-day synchronization;

3)          transport of ESMC messages over PON; and

4)          clarification of the reference optical configuration for XG-PON coexistence through splitters.