Supplement 58 to ITU-T L-series Recommendations (12/2023) ITU-T L.250 – National experiences for FTTx network architectures
Summary
History
FOREWORD
Table of Contents
Introduction
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Supplement
4 Abbreviations and acronyms
5 Conventions
6 Japanese experience
     6.1 Customer drop area size optimization (distribution area)
     6.2 Optical fibre distribution of access networks
          6.2.1 Introduction
          6.2.2 Design of optimum margin for demand fluctuation for the feeder area
          6.2.3 Balanced use of distributed fibre to each drop area in aerial distribution areas
7 Korean experience
     7.1 Distribution methods
          7.1.1 Tree distribution method
          7.1.2 Ring distribution method
          7.1.3 Cross-connect distribution method
          7.1.4 Link distribution method
          7.1.5 Star distribution method
     7.2 Number and size of rings in the feeder network
8 Spanish experience
     8.1 Introduction
     8.2 Scenarios
          8.2.1 Indoor
          8.2.2 Outdoor
9 Chinese experience
     9.1 Introduction
     9.2 Dedicated – fibre solution
     9.3 Wavelength selective branching solution
          9.3.1 Passive WDM solution
          9.3.2 Semi-active WDM solution
          9.3.3 Convergence metro WDM solution
10 Indian experience
     10.1 Introduction
     10.2 Scope
     10.3 FTTx technology options
     10.4 Architecture for GPON
     10.5 ODN architecture
     10.6 Ring structure till primary/ feeder section
     10.7 FTTx configurations/deployments
     10.8 Optical wireless access network connectivity
     10.9 Access network connectivity using radio infrastructure