�1����
Scope
�2���� References
�3���� Definitions
������� 3.1���� Terms defined in this
Recommendation
����������������� 3.1.1���� Frequency Grid
������� 3.2���� Terms defined in other
Recommendations
�4���� Abbreviations and acronyms
�5���� Dense WDM and its applications
�6���� Nominal central frequencies for
dense WDM systems