1 Scope
2
References
3
Abbreviations
4
Definitions
5
Architecture of the optical access network
5.1 Network architecture
5.1.1 FTTCab/C/B scenario
5.1.2 FTTH scenario
5.2 Reference configuration
5.2.1 Service Node Interface
5.2.2 Interface at the reference points S/R and
R/S
5.3 Functional blocks
5.3.1 Optical Line Termination
5.3.2
Optical Network Unit
5.3.3 Optical Distribution Network
5.4 ONU functional block
5.4.1 Optical Distribution Network interface
5.4.2 Multiplexing
5.4.3 User
Port
5.4.4 ONU powering
5.5 Optical Line Termination functional block
5.6 Optical Distribution Network functional block
5.6.1 Passive optical elements
5.6.2 Optical
interfaces
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 ATM-PON
8.2.1 Digital signal nominal bit rate
8.2.2 Physical media and transmission method
8.2.3 Bit rate
8.2.4 Line code
8.2.5 Operating wavelength
8.2.6 Transmitter at Old and Oru
8.2.7 Optical path between Old/Oru
and Ord/Olu
8.2.8 Receiver at Ord and Olu
8.3 Transmission Convergence layer requirements for the ATM-PON
8.3.1 Point-to-multipoint transmission on the
PON
8.3.2 Maximum payload capacities for downstream
and upstream
8.3.3 Downstream interface
8.3.4 Upstream interface
8.3.5 Transport specific TC functions
8.3.6 ATM specific TC functions
8.3.7 OAM functions
8.3.8 MESSAGES in the PLOAM channel
8.3.9 Automatic Protection Switching
8.4 Ranging method
8.4.1 Scope of the applied ranging method
8.4.2 Phase relation specification between
downstream and upstream
8.4.3 Definition of messages used in the
ranging protocol
8.4.4 Ranging procedure
8.4.5 Ranging time requirements
9
Operations Administration and Maintenance (OAM) functionality
10 Performance
11 Environmental condition
12 Safety
12.1 Electrical safety and protection
12.2 Optical safety and protection
Appendix I – Optional cases of overall minimum ORL of ODN at Oru and
Ord, and Old and Olu
I.1 Introduction
I.2 Effect of open connectors located at ONU side of star coupler
I.3 Effect of open connectors located at OLT side of star coupler
I.4 Effect of disconnecting a connector near ONU
Appendix II – Effect of optical return loss of ODN
II.1 Introduction
II.2 ODN optical return loss of 32 dB
II.2.1 Reflectance model to be considered
II.2.2 Influence of reflectance into ONU
receiver
II.2.3 Influence of reflectance into OLT receiver
(in the signal region)
II.2.4 Influence of reflectance into OLT
receiver (in the no signal region)
II.3 Other case of ODN reflectance
Appendix III – Ranging flow diagrams
III.1 Ranging flow in the ONU (example)
III.2 Ranging flow in the OLT (example)
Appendix IV – Access network survivability
IV.1 Introduction
IV.2 Possible switching types
IV.3 Possible duplex ATM-PON configurations and characteristics
IV.3.1 Configuration examples
IV.3.2 Characteristics
IV.4 Requirements
IV.5 Required information fields for PLOAM cell