scope:

This Recommendation provides the general functional architecture of orchestration in next generation network evolution (NGNe), specifies its functional entities and establishes the functionalities of these functional entities of orchestration in NGNe, as well as providing descriptions of all reference points. Orchestration in NGNe supports not only NGNes, but also provides coordination with networks implemented by new technologies including software-defined networking or network function virtualization (SDN/NFV), especially from the network evolution perspective. This Recommendation builds on [ITU-T Y.2323], with which its content is aligned.