Preface The convergence of Internet Protocol (IP) networks is enabling seamless communications that combine data, voice, video and other information streams. The true value of a converged IP network, however, is realized through the converged applications that use the network productively. The key enabler to the development of converged applications is the platform, for designing, developing, testing, and deploying applications that integrate and compose services. This IBM® Redbook introduces IBM tools for creating converged Session Initiation Protocol (SIP) and IP Multimedia Subsystem (IMSTM) applications. It provides programming guidelines and working examples that demonstrate how to use the different development tools. It also provides hints and tips that can get you up to speed quickly for developing converged applications. The portfolio of products includes the IBM WebSphere® Application Server Network Deployment, IBM WebSphere IP Multimedia Subsystem Connector, IBM WebSphere Presence Server, IBM WebSphere Telecom Web Services Server, and IBM WebSphere Integration Developer.