This document provides guidelines for conducting PoCs to demonstrate that the concept of End-to-End Deterministic Networking with Software-Defined Optical Interconnect (DN) be realized and to accelerate deployment of DN for various use cases under multi-operator/multi-vendor infrastructure. The purpose of this PoC reference is to facilitate conducting PoCs that demonstrate the concept of DN mentioned in [1] be realized and to accelerate deployment of DN for various use cases under multi-operator/multi-vendor infrastructure.