Chapter List

Frameworks and models are helpful to address logically and systematically a particular issue. Development of frameworks and models and their application bring a significant element of objectivity and professionalism in addressing an issue. In this section, a framework (with models) is offered for the study and management of QoS in telecommunications. Due to the dynamic nature of QoS, arising out of frequent development of sophisticated applications, amendments and refinements to the framework could be envisaged in the future. However, the basic concept of framework offered ought to withstand the test of time.

3.1 Introduction

Discussions in the previous chapter led to a framework for the study and management of Quality of Service (QoS) in telecommunications. This chapter describes the four viewpoints (the quality cycle), its purpose, and the characteristics of each viewpoint and the relationships of the four viewpoints within the model. Developed particularly for the legacy services, the principles can be equally applied to IP supported services with the support of the ACF and Four Market Models described elsewhere in the book. Chapters 4 7 cover the management issues arising from the application of each of the four viewpoints.

3.2 The four viewpoints of QoS

The two principal parties concerned in the management are the service...