Summary

ITU-T has been discussing the concept of a model network since 2006.

The first Recommendation approved on this subject, ITU-T Q.3900 (2006) "Methods of testing and model network architecture for NGN technical means testing as applied to public telecommunication networks" became the basic standard for next generation network (NGN) testing.

Afterwards, there was a discussion on the global interoperability concept as the next step of the testing methodology for NGN networks. The global interoperability includes technical means interoperability, interoperability of services and interoperability of networks for providing the guaranteed level of QoS. The set of Recommendations, which are based on the model network and global interoperability concepts, were developed during study periods 2005-2008, 2009-2012 in collaboration with experts from Russia, Austria, China, Japan, Korea, Poland (e.g., Recommendations ITU-T Q.3900, ITU-T Q.3904, ITU-T Q.3906.1, ITU-T Q.3945, etc.).

The same concept can be used for IoT testing. Therefore, Recommendation ITU-T Q.3952 describes the architecture and facilities of a model network for Internet of things (IoT) testing.