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"This book is like a good tour guide.It doesn't just describe the major attractions; you share in the history, spirit, language, and culture of the place." --Henning Schulzrinne, Professor, Columbia University Since its birth in 1996, Session Initiation Protocol (SIP) has grown up. As a richer, much more robust technology, SIP today is fully capable of supporting the communication systems that power our twenty-first century work and life. This second edition handbook has been revamped to cover the newest standards, services, and products. You'll find the latest on SIP usage beyond VoIP, including Presence, instant messaging (IM), mobility, and emergency services, as well as peer-to-peer SIP applications, quality-of-service, and security issues--everything you need to build and deploy today's SIP services. This book will help you * Work with SIP in Presence and event-based communications * Handle SIP-based application-level mobility issues * Develop applications to facilitate communications access for users with disabilities * Set up Internet-based emergency services * Explore how peer-to-peer SIP systems may change VoIP * Understand the critical importance of Internet transparency * Identify relevant standards and specifications * Handle potential quality-of-service and security problems

You can elevate your communication system with the 900 Series SP-11N SIP Module, a robust and innovative VoIP phone paging module. This high-quality device is designed with a SIP (Session Initiation Protocol) support and an auto-answer function, streamlining your communication process. The SP-11N SIP Module can seamlessly connect with your IP network and register as a SIP phone station on a variety of SIP server management software. This compatibility feature makes it a versatile choice for users looking to integrate multiple devices with their computer system. Designed with user convenience in mind, the SP-11N SIP Module also boasts VOX and mute functions. These features are specifically tailored for use with TOA's 9000M2, 900, 700, and BG series amplifiers, ensuring a smooth and efficient operation. Moreover, the module comes with five contact outputs that can be activated by keypad operation on any phone in the system. This allows for easy paging zone selections or triggering of pre-recorded messages, enhancing the functionality of your communication system. Whether you're a business seeking a reliable, cost-effective solution for internet-based calls, or an individual requiring high-performance audio and video output, the 900 Series SP-11N SIP Module is a durable and reliable choice that delivers exceptional performance.

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- CONVERGE Pro VH20 - Professional conferencing VoIP Interface - brings ClearOne HDConference audio quality to converged data/voice communication systems Add VoIP capabilities to your CONVERGE Pro platform with the CONVERGE Pro VH20. Simplified configuration makes it easy to directly connect SIP-based phone systems to transport audio over an IP network. With complete compatibility between ClearOne CONVERGE Pro products, the VH20 can quickly be integrate with Cisco, Avaya and many other VoIP PBX phone systems. Guaranteed Quality of Service (QOS) and ClearOne's legacy audio clarity mark this powerful end-point device. Full security is never a concern with TLS, AES an SRTP encryption. The combination of features and audio processing make the VH20 the most advanced, professional-quality VoIP audio interface available. Interoperation • Simplified configuration software• Scalable - Link to other Converge Pro units for unified control and system expansion• Integral web server for control and configuration Applications • Conference Rooms• Boardrooms• Courtrooms• Distance Learning Facilities• Telemedicine Facilities• Audio Distribution• Paging• Public Address - CONVERGE USB - The CONVERGE USB device provides plug and-play USB connectivity between popular desktop and laptop UC applications and CONVERGE Pro for full, rich, professional sound - without any firmware or software upgrades. Applications • Corporate Conference Room• Courtroom• Education/Training Center• Entertainment/Sports Venue• Healthcare Education/Training• Hospitality• House of Worship