The book explains, in tutorial fashion, the underlying technologies that enable real-time IP multimedia communication services in the Internet (voice, video, presence, instant messaging, online picture sharing, white-boarding, etc). Focus is on session initiation protocol (SIP) but also covers session description protocol (SDP), Real-time transport protocol (RTP), and message session relay protocol (MSRP). In addition, it will also touch on other application-related protocols and refer to the latest research work in IETF and 3GPP about these topics. (3GPP stands for "third-generation partnership project" which is a collaboration agreement between ETSI (Europe), ARIB/TTC (Japan), CCSA (China), ATIS (North America) and TTA (South Korea).) The book includes discussion of leading edge theory (which is key to really understanding the technology) accompanied by Java examples that illustrate the theoretical concepts.
Throughout the book, in addition to the code snippets, the reader is guided to build a simple but functional IP soft-phone therefore demonstrating the theory with practical examples.
This book covers IP multimedia from both a theoretical and practical point of view focusing on letting the reader understand the concepts and put them into practice using Java. It includes lots of drawings, protocol diagrams, UML sequence diagrams and code snippets that allow the reader to rapidly understand the concepts.
- Focus on HOW multimedia communications over the Internet works to allow readers to really understand and implement the technology
- Explains how SIP works, including many programming examples so the reader can understand abstract concepts like SIP dialogs, SIP transactions, etc.
- It is not focused on just VoIP. It looks At a wide array of enhanced communication services related to SIP enabling the reader put this technology into practice.
- Includes nearly 100 references to the latest standards and working group activities in the IETF, bringing the reader completely up to date.
- Provides a step-by-step tutorial on how to build a basic, though functional, IP soft-phone allowing the reader to put concepts into practice.
- For advanced readers, the book also explains how to build a SIP proxy and a SIP registrar to enhance one's expertise and marketability in this fast moving area.
2. A bit of history
3. IP multimedia fundamental
4. SIP overview
5. SIP programming overview
PART 2. Core protocols
6. SIP protocol operation
7. SIP protocol structure
8. Programming practice with SIP
9. Session description
10. The media plane
11. The IP soft-phone project
12. SIP proxies
13. SIP security
PART 3. Advanced topics
14. SIP extensions
15. SIP call control
16. Media servers and conferencing
17. Instant messaging and presence
18. Quality of service
19. NAT traversal
20. SIP networks
21. The path to IMS
22. Peer to peer SIP