entals of EMS, NMS and OSS/BSS multivendor environment. Another important factor influencing NMS architec- ture is mergers and acquisitions among the key vendors. Ease of integration is a key impediment in the traditional hierarchical NMS architecture. The networks will continue to evolve and the only way to perform network management in a cost effective and operational friendly manner is the migration to a solution that solves the challenges. Standardizing bodies are coming up with standards and guidelines in develop- ing next generation network management (NGNM) solutions to address current challenges in network management. The major issue here is that the current legacy NMS are functionality rich and highly specialized 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 outli