This Recommendation defines optical single-mode fibre access network architectures and provides information on planning new deployments and upgrading existing networks. Moreover, this Recommendation considers optical transmission performance and optical safety which depends on the architecture design of an optical access network.

This Recommendation covers:

– definitions and general features of fibre level and cable level architectures that have been used to meet different system objectives;

– convergence architectures for upgrading the performance of the optical access network;

– physical components within the network architectures;

– optical safety requirements;

– installation issues.