1
Scope
2 References
3 Definitions
4 Abbreviations
5 Architecture of the optical access
network
6 Services
7 User network interface and service
node interface
8 Optical network requirements
8.1 Layered structure of optical
network
8.2 Physical medium dependent layer
requirements for the GPON
8.3 Interaction between
GPON PMD layer and TC layer
Appendix I –
Allocation of the physical layer overhead time
Appendix II – Description and examples of power levelling mechanism
II.1 Introduction
II.2 ONU levels
II.3 Thresholds at OLT
II.4 Power detection