part Section 1 Concepts -- chapter 1 IMS Service, Models, and Concepts / chapter 2 IMS—A Secure Architecture for All IP Networks / chapter 3 Peer-to-Peer Features in the IP Multimedia Subsystem / chapter 4 On the Support of Media Functions within the IMS / part Section 2 Technologies -- chapter 5 The FOKUS Open IMS Core—A Global IMS Reference Implementation / chapter 6 Next-Generation Grid Support over the SIP/IMS Platform / chapter 7 Policy-Based QoS Control for a Convergence Network / chapter 8 OSA Service Capability Server—Parlay/Parlay X / chapter 9 Internetworking of 3GPP and WLAN and Wimax Networks / chapter 10 IM-SSF Application Server—Interworking with CAMEL / chapter 11 Distributed IMS / part Section 3 Services -- chapter 12 Service Delivery Platforms and Multimedia Service Design / chapter 13 The Integration of IMS into Service Delivery Platforms Based on Service-Oriented Architectures / chapter 14 Service Orchestration in IMS / chapter 15 Instant Messaging and Presence Service (IMPS). Whai-En Chen -- chapter 16 Multiparty Services in the IP Multimedia Subsystem / chapter 17 IMS-Based Conferencing Services: An Engineering Approach / chapter 18 IMS-Based IPTV / chapter 19 IPTV Modeling and Architecture over IMS / chapter 20 SIP-Based Prepaid Application Server / chapter 21 JAIN SLEE Platforms for IMS Application Servers / chapter 22 Role of OSS/BSS in the Success of IMS