2Network Theory
2.1 Introduction
The previous chapter presented the fundamental principles required for understanding the digitization and transfer of audio within the context of this book. This chapter presents some of the background theory that is necessary in order to provide the framework for understanding different kinds of communication interface, and so support the choice of technology to be applied to a particular circumstance.
The main subject areas covered in this chapter are the 4-layer and 7-layer reference models and quality of service (QoS). The reference models are useful tools in understanding network technologies and the issues that they present. Both models are taught to network professionals today, and have a bearing on ...
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