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Chapter 4 - SYSTEM OVERVIEW<br />

4.1 Introduction<br />

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Payment and<br />

Billing<br />

Develop, Offer and Operate Services<br />

Service<br />

Deployment<br />

Service Centres<br />

Subscribe Authentication Client System<br />

Management<br />

Control Centre<br />

Service<br />

Usage<br />

Service<br />

Provisioning<br />

Figure 3 High Level Overview of Open Systems<br />

4.2 The Open Systems architecture and design<br />

End Users<br />

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