ITU-T Y.3515 PDF

This Recommendation provides the Network as a Service (NaaS) functional architecture by specifying functionalities and functional components as well as reference points for the operation support system (OSS).

The scope of this Recommendation consists of:

– Overview of the NaaS functional architecture;

– NaaS functionalities;

– NaaS functional components;

– OSS reference points in the NaaS functional architecture.

This Recommendation also provides appendixes describing:

– The mapping between NaaS functionalities described in this Recommendation and NaaS functional requirements specified in [ITU-T Y.3512];

– The relationship between the NaaS functional architecture and software-defined networking (SDN);

– An illustrated usage of SDN and network functions virtualization (NFV) in support of the NaaS functional architecture.