These materials are the copyright of John Wiley & Sons, Inc. and anydissemination, distribution, or unauthorized use is strictly prohibited.Publisher’s AcknowledgmentsWe’re proud of this book and of the people who worked on it. For details on how tocreate a custom For Dummies book for your business or organization, contact firstname.lastname@example.org. For details on licensing the For Dummies brand for products orservices, contact BrandedRights&Licenses@Wiley.com.Some of the people who helped bring this book to market include the following:Acquisitions, Editorial, andVertical WebsitesProject Editor: Carrie A. BurchfieldEditorial Manager: Rev MengleAcquisitions Editor: Katie MohrBusiness Development Representative:Sue BlessingCustom Publishing Project Specialist:Michael SullivanComposition ServicesSr. Project Coordinator: Kristie ReesLayout and Graphics: Carrie A. Cesavice,Tim Detrick, Lavonne Roberts,Laura WesthuisProofreader: Rebecca DenoncourPublishing and Editorial for Technology DummiesRichard Swadley, Vice President and Executive Group PublisherAndy Cummings, Vice President and PublisherMary Bednarek, Executive Director, AcquisitionsMary C. Corder, Editorial DirectorPublishing and Editorial for Consumer DummiesKathleen Nebenhaus, Vice President and Executive PublisherComposition ServicesDebbie Stailey, Director of Composition ServicesBusiness DevelopmentLisa Coleman, Director, New Market and Brand Development
These materials are the copyright of John Wiley & Sons, Inc. and anydissemination, distribution, or unauthorized use is strictly prohibited.IntroductionTwo ongoing technology “megatrends” (forgive the jargon,but it’s accurate in this case) have caused some majordisruptions in the way that communications and computingwork for service providers, for enterprises, and for the peoplewho are actually doing the communicating and computing.The first of these trends is “The Internet” — the adoptionof Internet Protocol (IP) for applications such as voice andvideo. The second trend is the move to mobile; people nolonger expect to be tied to a desk phone.Here’s the hard part: Users want the convenience of accessingany service from (pretty much) any network connection on(pretty much) any device, but they also want the same levelsof performance and service reliability they had when they wereusing the old, dedicated networks. That’s a task and a half for thefolks designing, building, and operating the networks of serviceproviders and enterprises. One tool that helps make the variousservices and devices work in a relatively diverse environment(mobile + Internet) is Session Initiation Protocol (SIP). SIP isdesigned to control communications sessions (like voice callsor video collaborations) by providing the signaling to make surethe right media gets to the right location at the right time.The use of SIP in enterprises is growing rapidly — movingfrom its initial VoIP (Voice over IP) applications to a host ofother applications like conferencing, call recording, text messaging,media sharing, and more. In fact, SIP is growing so fastthat many enterprises are looking for a way to centralize control,security, and policy enforcement for SIP applications andto find a platform that makes it easy to rapidly develop anddeploy new applications. That’s the role of session management(where the “sessions” being managed are SIP sessions).
These materials are the copyright of John Wiley & Sons, Inc. and anydissemination, distribution, or unauthorized use is strictly prohibited.2Session Management For DummiesAbout This BookHave you started using SIP applications in your enterprise (orstarted offering them as a service provider) and want to takethe next step? Well, you’ve come to the right place! SessionManagement For Dummies, Sonus Special Edition, is all aboutSIP, SIP applications, why you should be considering a sessionmanagement solution, and what to look for when you do. Thisbook is non-technical and meant for enterprise or service providerfolks in Marketing, Sales, Finance, and more looking tounderstand the role of session management in their networksand for their SIP applications — now and in the future.Icons Used in This BookThis book calls out important bits of information with iconson the left margins of the page. You’ll find three such icons inthis book.The Tip icon points out a bit of information that aids in yourunderstanding of a topic or provides a little bit of extra informationthat may save you time, money, and a headache.Pay attention to the Remember icon because it points outparts of the text to lock away in your memory for future use.We try to keep the hardcore techie stuff to a bare minimum.You don’t need to know these factoids to get the most out ofthe book, but they may come in handy.