Architecture and Governance for Communication Services

Foreword ix Introduction xi Acknowledgements xv Chapter 1. Describing Service Architectures 1 1.1. The telecommunications community 2 1.1.1. The service and global functional planes of the intelligent network 2 1.1.2. From TINA to the NGN 8 1.1.3. The OMA and the concept of the enabler 11 1.2. The Web community 16 1.2.1. Web services as fundamental structural units 16 1.2.2. Semantic description of resources 18 1.2.3. Semantic description of Web services 19 1.3. The IT community 23 1.3.1. Service-oriented architectures 23 1.3.2. The concept of view 26 1.3.3. Enterprise architecture and urbanization 28 1.4. Summary 33 Chapter 2. Convergence of Service 35 2.1. Overview of communication services 35 2.1.1. Telecoms services and the NGN 35 2.1.2. The NGN 36 2.1.3. Towards convergence 47 2.1.4. Implementation of convergent services 50 2.2. Common developments of the service sector 52 2.2.1. The service production viewpoint: from need to service 54 2.2.2. The service use viewpoint: customer, consumer and user 58 2.2.3. From service to service system 61 2.3. Application to telecoms services 63 2.3.1. Telecoms services from the point of view of production? 63 2.3.2. Telecoms services from the point of view of use? 66 2.3.3. How to structure telecoms services? 68 2.4. Summary 74 Chapter 3. Building an Architectural Framework for Telecom Services 77 3.1. A business reference view for telecom services 78 3.1.1. Activities from the business view 78 3.1.2. Service processes 84 3.1.3. Application to telecom services 90 3.2. A functional reference view for telecom services 91 3.2.1. Components of the functional view 91 3.2.2. Functional patterns 94 3.2.3. Application to telecom services 96 3.3. A technical reference view for telecom services 99 3.3.1. The elements of the technical view 99 3.3.2. Technical roles and reference points 102 3.4. Summary 104 Chapter 4. Modeling and Case Study 107 4.1. The business reference view 108 4.1.1. Modeling 108 4.1.2. Illustrations 109 4.2. Functional reference view 116 4.2.1. Modeling 116 4.2.2. Illustration 128 4.3. The technical reference view 142 4.3.1. Modeling 142 4.3.2. Illustration 144 4.4. Functional view of a service 157 4.4.1. Modeling 158 4.4.2. Illustration 164 4.5. The technical view of a service 175 4.5.1. Modeling 176 4.5.2. Illustration 179 4.6. The applicative view of a service 185 4.6.1. Modeling 187 4.6.2. Illustration 194 4.7. Summary 208 Chapter 5. Organizational and Software Applications 211 5.1. An aid for the construction of service offers 211 5.1.1. Service design 211 5.1.2. Evaluation and comparison of services 212 5.1.3. Service management 216 5.2. An aid for the rationalization of services 218 5.2.1. The case of enablers 218 5.2.2. The case of software service 220 5.2.3. The case of semantic services 222 5.3. An aid for achieving service convergence 223 5.3.1. A technical pattern for the Web/IMS convergence 224 5.3.2. Unified access to services 228 5.3.3. Inter-service communication 233 5.4. Summary 238 Conclusion 239 Appendix 245 Bibliography 249 List of Figures and Tables 263 Index 269