Service-oriented architecture (SOA) uses services as the baseline for developing new architectures and applications, as networks are built specifically to satisfy service requirements. Most services are currently handled over different networks, but newer services will soon require cross-network support. Architecting the Telecommunication Evolution: Toward Converged Network Services outlines the challenges of providing crossover services and the new architectures and protocols that will enable convergence between circuit- and packet-switched networks.
Taking a standards-based approach to converged services, this book lays a foundation for SOA in telecommunications. The authors begin by outlining the development of Internet telephony, focusing on how to use the respective benefits of the traditional public switched telephone network (PSTN) and the Internet to create and implement more value-added services. These two eminent specialists first examine services that originate in the Internet and take advantage of PSTN services, and then explore how discrete events on the PSTN can be used as an impetus to creating services on the Internet. They conclude with a discussion on how this convergence creates smart spaces in the telecoms domain.
Including eight valuable appendices that will aid in the implementation of converged services, Architecting the Telecommunication Evolution is the first book of its kind to offer a survey as well as a practical roadmap to integrating modern networks to achieve better performance and new functionality.
INTRODUCTION The Evolution of Internet Telephony Problem Statement Solutions INTERNET TELEPHONY: THE EVOLUTION OF A SERVICE-ORIENTED ARCHITECTURE Introduction Service Architecture for Traditional Telephone Network Internet Services Architecture Requirements of a Telecommunications SOA Conclusion BACKGROUND: PROVIDING TELEPHONY SERVICE Service Architecture for the Wireline Public Switched Telephone Network Service Architecture for the Cellular Public Switched Telephone Network Service Architecture for Internet Telephony COMPARATIVE ANALYSIS OF SIGNALING PROTOCOLS Desirable Properties of a Candidate Protocol Protocols Evaluated Comparative Analysis The Novel SIP-Based Approach CROSSOVER SERVICES ORIGINATION ON THE INTERNET Introduction Motivation Call Model Mapping with State Sharing (CMM/SS) Implementing CMM/SS Results from CMM/SS Performance of CMM/SS CMM/SS: A General Solution Limitations of CMM/SS Related Work Conclusion CROSSOVER SERVICES ORIGINATING ON THE PUBLIC SWITCHED TELEPHONE NETWORK Introduction Architecture for PSTN-Originated Crossover Services Research Challenges An XML Schema to Represent Events in the PSTN Proposed Extensions to SIP Examples A Taxonomy of PSTN-Originated Crossover Services SIP: The Distributed Middleware Related Work Conclusion SMART SPACES IN THE TELECOMMUNICATIONS DOMAIN Introduction Research Thrusts of Pervasive Computing Implementing a Telecommunications Smart Space Design and Implementation of the Event Manager Performance Analysis of the Event Manager Related Work Conclusion CONCLUSIONS APPENDICES Appendix A: The SPIRITS (Services in PSTN Requesting Internet Services) Protocol Appendix B: Interworking SIP and Intelligent Network (IN) Applications Appendix C: XML Schema for PSTN Events Appendix D: XML Schema for SMS to IM Appendix E: Raw Data for Event Manager Performance Analysis Appendix F: Bibliography INDEX