cialized based on years of development. An adoption strategy of NGNM should involve the transformation from legacy NMS to NGNM in such a manner as to reap the advantages of the NGNM as well as keep the functionalities of legacy NMS. The important features of this report are: The NGNM framework combining standards and popular approaches in the NMS domain. The various adoption strategies for moving to the suggested NGNM frame- work utilizing existing legacy NMS solutions. There are multiple standards and guidelines given by standardizing bodies in developing multitechnology next generation network management solution. There are also standards on functions and data for the network management solution that are required for a specific network. This report details a NGNM framework that can be easily customized for a specific network; with new functionalities specific to the network or specialized functions added without affecting the generalized functionalities in the network management solution. Also adoption approaches to utilize existing functions in legacy NMS are outlined. The report is organized as follows. First a brief overview of how the legacy NMS is handled, followed by the attributes and functions required in NGNM solution. Ways of customizing this framework for a specific network like IMS is outlined. Then a few approaches for adopting the framework that utilizes the functionality rich legacy NMS are detailed. 34.2 Introduction With rapid improvements happening in the architecture of core and access net- works it is quite clear that legacy NMS (network management system) with proprietary interfaces and protocols will become obsolete, as the cost and effort required in maintaining such systems is very huge and those are not scalable with the requirements. It is difficult to integrate other components to these systems. The solution toward developing an NMS solution for next generation network is to have Report: NGNM Framework and Adoption Strategy a scalable NMS suitable for handling legacy and next generati