The 3G IP multimedia subsystem (IMS): Merging the Internet & the cellular worlds, (2^nd Ed.)

The 3G IP Multimedia Subsystem (IMS): Merging the Internet and the Cellular Worlds, Second Edition is an updated version of the best-selling guide to this exciting technology that will merge the Internet with the cellular world, ensuring the availability of Internet technologies such as the web, email, instant messaging, presence and videoconferencing nearly everywhere. In this thoroughly revised overview of the IMS and its technologies, goals, history, vision, the organizations involved in its standardization and architecture, the authors first describe how each technology works on the Internet and then explain how the same technology is adapted to work in the IMS, enabling readers to take advantage of any current and future Internet service.

I Introduction to the IMS. 1 IMS Vision: Where Do We Want to Go? 1.1 The Internet. 1.2 The Cellular World. 1.3 Why Do We Need the IMS? 1.4 Relation between IMS and non-IMS Services. 2 The History of the IMS Standardization. 2.1 Relations between IMS-related Standardization Bodies. 2.2 Internet Engineering Task Force (IETF). 2.3 Third Generation Partnership Project (3GPP). 2.4 Third Generation Partnership Project 2 (3GPP2). 2.5 IETF-3GPP/3GPP2 Collaboration. 2.6 Open Mobile Alliance (OMA). 3 General Principles of the IMS Architecture. 3.1 From Circuit-switched to Packet-switched. 3.2 IMS Requirements. 3.3 Overview of Protocols Used in the IMS. 3.4 Overview of IMS Architecture. 3.5 Identification in the IMS. 3.6 SIM, USIM, and ISIM in 3GPP. II The Signaling Plane in the IMS. 4 Session Control on the Internet. 4.1 SIP Functionality. 4.2 SIP Entities. 4.3 Message Format. 4.4 The Start Line in SIP Responses: the Status Line. 4.5 The Start Line in SIP Requests: the Request Line. 4.6 Header Fields. 4.7 Message Body. 4.8 SIP Transactions. 4.9 Message Flow for Session Establishment. 4.10 SIP Dialogs. 4.11 Extending SIP. 4.12 Caller Preferences and User Agent Capabilities. 4.13 Reliability of Provisional Responses. 4.14 Preconditions. 4.15 Event Notification. 4.16 Signaling Compression. 4.17 Content Indirection. 4.18 The REFER Method. 5 Session Control in the IMS. 5.1 Prerequisites for Operation in the IMS. 5.2 IPv4 and IPv6 in the IMS. 5.3 IP Connectivity Access Network. 5.4 P-CSCF Discovery. 5.5 IMS-level Registration. 5.6 Subscription to the reg Event State. 5.7 Basic Session Setup. 5.8 Application Servers: Providing Services to Users. 5.9 Interworking. 5.10 Emergency Sessions. 6 AAA on the Internet. 6.1 Authentication, Authorization, and Accounting. 6.2 AAA Framework on the Internet. 6.3 The Diameter Protocol. 7 AAA in the IMS. 7.1 Authentication and Authorization in the IMS. 7.2 The Cx and Dx Interfaces. 7.3 The Sh Interface. 7.4 Accounting. 7.5 Charging Architecture. 7.6 Offine Charging. 7.7 Online Charging. 8 Security on the Internet. 8.1 HTTP Digest. 8.2 Certificates. 8.3 TLS. 8.4 S/MIME. 8.5 Authenticated Identity Body. 8.6 Ipsec. 8.7 Privacy. 8.8 Encrypting Media Streams. 9 Security in the IMS. 9.1 Access Security. 9.2 Network Security. 10 Policy on the Internet. 10.1 The COPS Protocol. 10.2 The Outsourcing Model. 10.3 The Configuration Model. 11 Policy in the IMS. 11.1 SIP Procedures. 11.2 Media Authorization. 11.3 Proxy Access to SDP Bodies. 11.4 Initialization Procedure. 12 Quality of Service on the Internet. 12.1 Integrated Services. 12.2 Differentiated Services. 13 Quality of Service in the IMS. 13.1 Instructions to Perform Resource Reservations. 13.2 Reservations by the Terminals. 13.3 Network Authorization. 13.4 QoS in the Network. III The Media Plane in the IMS. 14 Media Encoding. 14.1 Speech Encoding. 14.2 Video Encoding. 14.3 Text Encoding. 14.4 Mandatory Codecs in the IMS. 15 Media Transport. 15.1 Reliable Media Transport. 15.2 Unreliable Media Transport. 15.3 Media Transport in the IMS. IV Building Services with the IMS. 16 The Presence Service on the Internet. 16.1 Overview of the Presence Service. 16.2 The Presence Life Cycle. 16.3 Presence Information Data Format. 16.4 The Presence Data Model for SIP. 16.5 Mapping the SIP Presence Data Model to the PIDF. 16.6 Rich Presence Information Data Format. 16.7 CIPID. 16.8 Timed Presence Extension to the PIDF. 16.10 Presence Publication. 16.11 Presence Subscription and Notification. 16.12 Watcher Information. 16.13 URI-list Services and Resource Lists. 16.14 XML Configuration Access Protocol. 16.15 Presence Optimizations. 17 The Presence Service in the IMS. 17.1 The Foundation of Services. 17.2 Presence Architecture in the IMS. 17.3 Watcher Subscription. 17.4 Subscription to Watcher Information. 17.5 Presence Publication. 17.6 Presence Optimizations. 17.7 The Ut Interface. 18 Instant Messaging on the Internet. 18.1 Modes of Instant Messages. 18.2 Pager-mode Instant Messaging. 18.3 Session-based Instant Messaging. 19 The Instant Messaging