This Recommendation provides a UML description for the management interface between a supplier management system and an operator management system. This work defines part of the management aspects for network resources defined by the G.983-series of Recommendations for Broadband Passive Optical Network (BPON) equipment. Generally speaking, the supplier management system is an element management system (EMS) and the operator management system is a network management system (NMS). However, the supplier management system is required to present a network view of connection management to the operator management system. Therefore, it was deemed necessary for the sake of clarity to use the terminology adopted in naming the systems involved.