Internet Multimedia Communications Using SIP: A Modern Approach Including Java Practice (Hardcover)

Session Initiation Protocol (SIP) was conceived in 1996 as a signaling protocol for inviting users to multimedia conferences. With this development, the next big Internet revolution silently started. That was the revolution which would end up converting the Internet into a total communication system which would allow people to talk to each other, see each other, work collaboratively or send messages in real time. Internet telephony and, in general, Internet multimedia, is the new revolution today and SIP is the key protocol which allows this revolution to grow.
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.



KEY FEATURES

* 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.

《Session Initiation Protocol (SIP)》於1996年被提出，作為一種用於邀請使用者參加多媒體會議的信令協議。隨著這一發展，下一場大型的互聯網革命悄然展開。這場革命將互聯網轉變為一個完整的通信系統，使人們能夠互相交談、見面、協作工作或實時發送消息。互聯網電話和互聯網多媒體是當今的新革命，而SIP是使這場革命得以發展的關鍵協議。

本書以教程的方式解釋了在互聯網上實現實時IP多媒體通信服務的底層技術（語音、視頻、在線狀態、即時消息、在線圖片共享、白板等）。重點介紹了會話啟動協議（SIP），同時還涵蓋了會話描述協議（SDP）、實時傳輸協議（RTP）和消息會話中繼協議（MSRP）。此外，還將涉及其他應用相關的協議，並參考IETF和3GPP在這些領域的最新研究工作。（3GPP代表“第三代合作夥伴項目”，是歐洲電信標準協會（ETSI）、日本電波協會（ARIB/TTC）、中國電信標準協會（CCSA）、北美電信標準協會（ATIS）和韓國電信技術協會（TTA）之間的合作協議。）本書包括對尖端理論的討論（這對真正理解技術至關重要），並附有用Java示例說明理論概念。

在整本書中，除了代碼片段外，讀者還會被引導建立一個簡單但功能完整的IP軟電話，以此來演示理論與實際示例的應用。

本書從理論和實踐的角度介紹了IP多媒體，重點是讓讀者理解概念並使用Java實踐。它包含了大量的圖示、協議圖表、UML序列圖和代碼片段，使讀者能夠迅速理解概念。

主要特點：

- 重點介紹互聯網上多媒體通信的工作原理，讓讀者真正理解並實現這項技術。
- 解釋SIP的工作原理，包括許多編程示例，使讀者能夠理解抽象概念，如SIP對話、SIP事務等。
- 不僅專注於VoIP，還涵蓋了與SIP相關的各種增強通信服務，使讀者能夠實際應用這項技術。
- 包含近100個參考文獻，涵蓋了IETF的最新標準和工作組活動，使讀者完全跟上最新動態。
- 提供了一個逐步教程，教讀者如何構建一個基本但功能完整的IP軟電話，使讀者能夠實踐概念。
- 對於高級讀者，本書還解釋了如何構建SIP代理和SIP註冊器，以提升在這個快速發展領域中的專業知識和市場競爭力。