Enterprise and service provider networks are increasingly adopting SIP as guiding protocol for session setup and tear down, and integrating Back to Back User Agent (B2BUA) and Session Border Controller (SBC) technology to enable this shift. Thousands of organizations have chosen the Cisco Unified Border Element (CUBE) as their B2BUA/SBC technology of choice. Understanding Session Border Controllers is the first comprehensive guide for network professionals and consultants who want to successfully master B2BUA/SBC theory, design, deployment, integration, operation, security, and troubleshooting. Using examples based on CUBE, the authors offer insights that will be valuable to technical professionals using any B2BUA/SBC solution, in any environment. Coverage includes: Key benefits of B2BUA/SBC, including topology abstraction, demarcation and security, media/protocol interworking, and interoperability with widely-diverse nodes Core concepts of SIP, H.323, DTMF, Fax/Modem over IP, Voice security, Media handling, and media/signal forking, and how they relate to B2BUA/SBC Efficient B2BUA deployment scenarios Securely migrating real-time communication over IP Using B2BUA to interoperate between asymmetric VoIP networks Establishing interoperability with call servers, proxies, fax servers, ITSPs, SIP registrar servers, redirect servers, and other devices

CCNP Collaboration Call Control and Mobility CLACCM 300-815 Official Cert Guide from Cisco Press enables you to succeed on the exam the first time and is the only self-study resource approved by Cisco. Collaboration experts Kyzer Davis, Paul Giralt, Patrick Kinane, and Gonzalo Salgueiro share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. This complete study package includes * A test-preparation routine proven to help you pass the exams * Do I Know This Already? quizzes, which allow you to decide how much time you need to spend on each section * Chapter-ending exercises, which help you drill on key concepts you must know thoroughly * The powerful Pearson Test Prep Practice Test software, complete with hundreds of well-reviewed, exam-realistic questions, customization options, and detailed performance reports * An online, interactive Flash Cards application to help you drill on Key Terms by chapter * A final preparation chapter, which guides you through tools and resources to help you craft your review and test-taking strategies * Study plan suggestions and templates to help you organize and optimize your study time Well regarded for its level of detail, study plans, assessment features, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that ensure your exam success. This official study guide helps you master all the topics on the CCNP Implementing Cisco Advanced Call Control and Mobility Services (CLACCM 300-815) exam, including * Signaling and media protocols * CME/SRST gateway technologies * Cisco Unified Border Element * Call control and dial planning * Cisco Unified CM Call Control features * Mobility Companion Website: The companion website contains two full exams and all of the review exercises from the book.