Chapter 11
What Is NMS?
This chapter is intended to provide the reader with a basic understanding about the Network Management System (NMS). At the end of this chapter you will have a good understanding of the components in a legacy NMS, some of the open source products that implement full or partial functionality of these components, and where the network management system fits in the telecom architecture.
11.1 Introduction
The network management layer in the TMN model is between the element management layer and service management layer. It works on the FCAPS (fault, configuration, accounting, performance, and security) data obtained from the element management layer. The FCAPS functionality is spread across all layers of the TMN model. This ...
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