Download or read book Troubleshooting Cisco IP Telephony written by Paul Giralt and published by Cisco Press. This book was released on 2002 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt: In The Implosion of Capitalism world-renowned political economist Samir Amin connects the key events of our times - financial crisis, Eurozone implosion, the emerging BRIC nations and the rise of political Islam - identifying them as symptoms of a profound systemic crisis.In light of these major crises and tensions, Amin updates and modifies the classical definitions of social classes, political parties, social movements and ideology. In doing so he exposes the reality of monopoly capitalism in its contemporary global form.In a bravura conclusion, Amin argues that the current capitalist system is not viable and that implosion is unavoidable. The Implosion of Capitalism makes clear the stark choices facing humanity - and the urgent need for a more humane global order.

Download or read book IP Telephony written by Bill Douskalis and published by Prentice Hall. This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now that virtually every leading telecommunications service provider has committed to delivering IP-based telephony services, communications professionals face the enormous challenge of implementation. This hands-on guide brings together today's best known answers and solutions for delivering VolP services with the quality customers deman. No other book covers the combined issues of protocol signaling, media transport methodology, reference topological considerations and voice quality testing in service offerings. No matter what your role in delivering Voice Over IP (VoIP) services, IP Telephony delivers the specifics you need to speed deployment, improve reliability, ensure quality, and simplify troubleshooting. Precise, thorough, and based firmly in the real-world, it is simply indispensable. The accompanying CD-ROM contains an extensive library of IP telephony-related RFCs, pertinent white papers and application notes that include real-world IP Telephony measurement examples.

Download or read book IP Telephony written by Olivier Hersent and published by Addison-Wesley Professional. This book was released on 2000 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors bring together all the diverse information network professionals and developers need to build IP-based multimedia and voice networks, including coverage on key technologies, protocols, standards, security, access, and more.

Download or read book Fax Modem and Text for IP Telephony written by David Hanes and published by Cisco Press. This book was released on 2008 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: IP Telephony has revolutionized many aspects of telecommunications and it continues to be deployed at a rapid pace. The benefits of transporting voice over an IP infrastructure include increased flexibility, better scalability, and a significant cost savings over traditional telephony networks. However, during the deployment of these VoIP solutions, other types of traditional telephony communications that can also realize these same benefits are often overlooked or ignored. Fax, Modem, and Text for IP Telephony is a comprehensive resource that confronts the need for information on transporting alternative, non-voice communications over the IP protocol. Beginning with the basic theory and operation of fax, modem, and text telephony, this book then educates you on all of the current transport options that are available. An extensive design guide then provides the pertinent advice and best practices for making the correct planning decisions and choosing the best transport option for your network. Fax, Modem, and Text for IP Telephony also includes meticulous configuration and troubleshooting guides. The configuration guides in this book include a number of sample configurations and tips to manage any fax, modem, or text deployment. The troubleshooting guides present the essential methodologies, debugs, and analysis tools for quickly resolving both the common and complex issues that may be encountered. This book is the perfect companion to other VoIP resources, and it is the only book that empowers you to successfully handle any fax, modem, or text implementation. David Hanes, CCIE® No. 3491, is currently a senior engineer specializing in training, network design assistance, and troubleshooting of fax technologies for the Customer Assurance Engineering (CAE) group at Cisco®. Since joining Cisco in 1997, David has worked as a TAC engineer for the WAN, WAN Switching, and Multiservice Voice teams, a team lead for the Multiservice Voice team, and an escalation engineer covering a variety of voice and fax technologies. David has troubleshot escalated issues in Cisco customer networks worldwide and remains a technical resource for other Cisco employees and customers. Gonzalo Salgueiro CCIE No. 4541, is a senior escalation engineer supporting voice, fax, and modem technologies for the Cisco TAC. Gonzalo has spent more than 11 years troubleshooting complex issues in large-scale VoIP networks as well as providing technical leadership for some of the most critical worldwide voice and fax deployments. Prior to joining the Escalation Team in 1999 Gonzalo had roles as a TAC engineer for both the Access/Dial and Multiservice Voice teams as well as a team lead for the Access/Dial team. Learn basic and advanced operational theory and practical implementation of fax, modem, and text communications Understand how to implement fax, modem, and text communications using protocols such as H.323, SIP, MGCP, and SCCP. Explore the functionality and advantages of T.38 fax relay, passthrough, modem relay, T.37 Store-and-Forward Fax, and text relay for IP network deployments Employ expert-recommended best practices and design solutions for deploying fax, modem, and text in an IP telephony environment Optimize your network with comprehensive fax, modem, and text configuration and design tips for use with IOS and non-IOS gateways Master the latest fax, modem, and text troubleshooting tools and techniques employed by Cisco engineers Category: Cisco Press--IP Communication Covers: Fax, Modem, and Text Telephony Technologies for Integrated IP Networks

Download or read book IP Telephony Interconnection Reference written by Mohamed Boucadair and published by CRC Press. This book was released on 2011-11-04 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing the growth of IP telephony service offerings within the corporate and residential realm, IP Telephony Interconnection Reference: Challenges, Models, and Engineering examines the technical and regulatory issues related to IP telephony interconnection at the large scale. It describes business and interconnection models, reviews emerging architectures such as IMS and TISPAN, identifies commonly-encountered issues, and supplies solutions to technical issues. The authors offer a detailed overview of SPEERMINT activity and proposed architecture, the current work undertaken in i3 Forum, and the use of ENUM for interconnection—describing practices in both fixed and mobile networks. Among the first books to present information on interprovider communications and interconnection of IP telephony clouds, the text supplies a clear and up-to-date picture of the VoIP protocol jungle. Provides detailed guidance on how to implement VoIP interconnect services Presents an overview of deployed architectures in fixed and mobile networks used for interconnection and roaming purposes Enumerates regulatory issues with a focus on Europe and the United States Proposes interconnection models Suggests viable solutions to technical issues This reference supplies an overview of interconnection practices in PSTN/mobile. It proposes solutions for overcoming service engineering issues and includes a set of recommendations to ease the proliferation of interconnection agreements and schemes. Keeping you up to speed with recent developments in IP telephony, the book facilitates the understanding of the technical and regulatory requirements needed to provide global services to your customers and successfully navigate the upcoming migration to a completely IP-based model.

Download or read book Cisco IP Telephony written by Ramesh Kaza and published by Cisco Press. This book was released on 2005-02-23 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to successful deployment of the Cisco IP Telephony solution Real-world case studies from the Cisco design consulting engineers who developed the PDIOO process provide practical advice on all stages of successful IPT deployment Concise understanding of the PDIOO phases enables architects and engineers to successfully deploy the Cisco IPT solution Division of the process into PDIOO phases provides a logical and defined guide for network engineers and architects as they proceed through each of the phases in deploying the Cisco IPT solution Includes detailed questionnaires for each phase of deployment in the PDIOO cycle—a great aid in understanding customer networks and requirements Network infrastructure design, call processing infrastructure design and applications, and voice-mail system design are covered in depth Cisco® IP Telephony (IPT) solutions are being deployed at an accelerated rate, and network architects and engineers need to understand the various phases involved in successful deployment: planning, design, implementation, operation, and optimization (PDIOO). On the road to that understanding, those involved need to collect information for each phase of deployment, and then follow through with the best architecture, deployment model, and implementation based on the data collected. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization is a guide for network architects and engineers as they deploy the Cisco IPT solution. With this book, you will master the PDIOO phases of the IPT solution, beginning with the requirements necessary for effective planning of a large-scale IPT network. From there, you’ll follow a step-by-step approach to choose the right architecture and deployment model. Real-world examples and explanations with technical details, design tips, network illustrations, and sample configurations illustrate each step in the process of planning, designing, implementing, operating, and optimizing a chosen architecture based on information you have collected. In-depth instruction on each PDIOO phase provides specific details about the tasks involved and best practices for successful implementation of the IPT solution. This book also contains predesigned questionnaires and PDIOO assistance tools that help you determine the requirements of each phase of the PDIOO cycle. Authors Ramesh Kaza and Salman Asadullah have been involved with Cisco IPT solutions from the beginning and have planned, designed, and implemented major IPT networks using the guidelines found here. Cisco IP Telephony: Planning, Design, Implementation, Operation, and Optimization provides the step-by-step explanations, details, and best practices acquired by the authors while working with the top Cisco IPT customers. This book is part of the Networking Technology Series from Cisco Press®, which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.

Download or read book Securing Cisco IP Telephony Networks written by Akhil Behl and published by Cisco Press. This book was released on 2012-08-31 with total page 1155 pages. Available in PDF, EPUB and Kindle. Book excerpt: The real-world guide to securing Cisco-based IP telephony applications, devices, and networks Cisco IP telephony leverages converged networks to dramatically reduce TCO and improve ROI. However, its critical importance to business communications and deep integration with enterprise IP networks make it susceptible to attacks that legacy telecom systems did not face. Now, there’s a comprehensive guide to securing the IP telephony components that ride atop data network infrastructures–and thereby providing IP telephony services that are safer, more resilient, more stable, and more scalable. Securing Cisco IP Telephony Networks provides comprehensive, up-to-date details for securing Cisco IP telephony equipment, underlying infrastructure, and telephony applications. Drawing on ten years of experience, senior network consultant Akhil Behl offers a complete security framework for use in any Cisco IP telephony environment. You’ll find best practices and detailed configuration examples for securing Cisco Unified Communications Manager (CUCM), Cisco Unity/Unity Connection, Cisco Unified Presence, Cisco Voice Gateways, Cisco IP Telephony Endpoints, and many other Cisco IP Telephony applications. The book showcases easy-to-follow Cisco IP Telephony applications and network security-centric examples in every chapter. This guide is invaluable to every technical professional and IT decision-maker concerned with securing Cisco IP telephony networks, including network engineers, administrators, architects, managers, security analysts, IT directors, and consultants. Recognize vulnerabilities caused by IP network integration, as well as VoIP’s unique security requirements Discover how hackers target IP telephony networks and proactively protect against each facet of their attacks Implement a flexible, proven methodology for end-to-end Cisco IP Telephony security Use a layered (defense-in-depth) approach that builds on underlying network security design Secure CUCM, Cisco Unity/Unity Connection, CUPS, CUCM Express, and Cisco Unity Express platforms against internal and external threats Establish physical security, Layer 2 and Layer 3 security, and Cisco ASA-based perimeter security Complete coverage of Cisco IP Telephony encryption and authentication fundamentals Configure Cisco IOS Voice Gateways to help prevent toll fraud and deter attacks Secure Cisco Voice Gatekeepers and Cisco Unified Border Element (CUBE) against rogue endpoints and other attack vectors Secure Cisco IP telephony endpoints–Cisco Unified IP Phones (wired, wireless, and soft phone) from malicious insiders and external threats This IP communications book is part of the Cisco Press® Networking Technology Series. IP communications titles from Cisco Press help networking professionals understand voice and IP telephony technologies, plan and design converged networks, and implement network solutions for increased productivity.

Download or read book IP Telephony Demystified written by Ken Camp and published by McGraw Hill Professional. This book was released on 2002-11-13 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is designed to demystify IP telephony for business people and technology generalists. It discusses: IP protocol breakdown -SIP, H.323, Megaco/H.248; quality of service - IntServ, DiffServ, and MPLS; integrating voice into a LAN data environment; and cost and service implications.

Download or read book Cisco IP Telephony written by David Lovell and published by Cisco Press. This book was released on 2002 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cisco authorized self-study book for IP Telephony foundation learning Cisco IP Telephony offers indispensable information on how to Configure and implement an end-to-end IP telephony solution using Cisco CallManager and CIPT devices to converge your voice and data networks Create, configure, and manage Cisco CallManager clusters to support small user environments as well as larger user environments with up to 10,000 users Optimize routing flexibility into your CIPT network design using route plans Ensure telephony class of service with partitions and calling search spaces Effect moves, adds, and changes on a large number of users and devices quickly and efficiently Perform proper installation, upgrade, and backup of Cisco CallManager clusters Monitor and perform troubleshooting tasks for a CIPT solution Cisco IP Telephonyis a Cisco authorized self-paced learning tool. This book provides networking professionals with the fundamentals to implement a Cisco AVVID IP Telephony solution that can be run over a data network, therefore reducing costs associated with running separate data and telephone networks. Cisco IP Telephonyfocuses on using Cisco CallManager and other IP telephony components connected in LANs and WANs. This book provides you with a foundation for working with Cisco IP Telephony products, specifically Cisco CallManager. If your task is to install, configure, support, and maintain a CIPT network, this is the book for you. Part I of Cisco IP Telephonyintroduces IP telephony components in the Cisco AVVID environment. Part II covers basic CIPT installation, configuration, and administration tasks, including building CallManager clusters; configuring route plans, route groups, route lists, route patterns, partitions, and calling search spaces; configuring and managing shared media resources such as transcoders, conference bridges, and music on hold; configuring and managing Cisco IP Phone features and users; configuring IP telephony component hardware and software; automating database moves, adds, and changes using the Bulk Administration Tool (BAT); and installing, upgrading, and creating backups for Cisco CallManager components. Part III deals with advanced CIPT configuration tasks for call preservation and shared media resources; covers distributed and centralized call processing model design in WAN environments; explains how to deploy Survivable Remote Site Telephony (SRST) to provide local call processing redundancy at remote branch sites; and provides tips, guidelines, and rules for deploying a Cisco IP Telephony solution, culled from seasoned practitioners in the field. Part IV focuses on three of the primary Cisco applications designed for integration in a Cisco CallManager environment-Cisco WebAttendant, Cisco IP SoftPhone, and Cisco Unity(tm). All this detailed information makes Cisco IP Telephony an ideal resource for the configuration and management of a Cisco IP Telephony solution. Cisco IP Telephonyis part of a recommended learning path from Cisco Systems that can include simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining. This volume is in the Certification Self-Study Series offered by Cisco Press. Books in this series provide officially developed training solutions to help networking professionals understand technology implementations and prepare for the Cisco Career Certifications examinations.

Download or read book IP Telephony Unveiled written by Kevin Brown and published by Cisco Press. This book was released on 2004 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand and develop an IP telephony strategy that saves money and provides new services and network efficiencies. Readers will learn the difference between IP Telephony (IPT) and voice over IP (VoIP) and discover what this difference means in business applications.

Download or read book Beyond VoIP Protocols written by Olivier Hersent and published by John Wiley & Sons. This book was released on 2005-03-04 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1999-2000, VoIP (Voice-over-IP) telephony was one of the most successful buzzwords of the telecom bubble era. However, in 2001-2003, VoIP faced a very tough reality check. Now, manufacturers and service providers are drawing on what they have learnt from past experience in order to prepare to participate in the next major challenge faced by the telecommunications industry. This book offers a comprehensive overview of the issues to solve in order to deploy global revenue-generating effective "multimedia" services. Drawing on extensive research and practical deployment experience in VoIP, the authors provide essential advice for those seeking to design and implement a post-bubble VoIP network. Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony Introduces the basics of speech coding and voice quality Demonstrates how quality of service may be built into the network and deals with dimensioning aspects, e.g. multipoint communications and how to model call seizures. Explores the potential of multicast to turn an IP backbone into an optimized broadcast medium Includes amply illustrated, state-of-the-art practical advice for formulating a complete deployment strategy A companion volume to "IP Telephony: Deploying VoIP Protocols", this book takes the reader a stage deeper into how to prepare the network and exploit VoIP technology to its full potential.

Download or read book Cisco AVVID and IP Telephony Design and Implementation written by Wayne Lawson and published by Elsevier. This book was released on 2001-12-05 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corporate demand for AVVID solutions is rapidly increasing - engineers will need this book Cisco AVVID (Architecture for Voice, Video and Integrated Data), the latest development from Cisco Systems, is redefining the way businesses communicate. AVVID allows businesses to transmit voice, data, and video over a single integrated architecture called a "multiservice" or "converged" network. Cisco AVVID Design and Implementation is designed to be a complete desk-reference for network administrators and engineers responsible for a complicated AVVID network. Covering history, protocols, hardware, servers, switches, bridges, routers, and discussions about implementation issues, realities of cost, requirements and network limitations. Engineers will learn how to design and build a comprehensive Cisco AVVID network infrastructure. - Follows on from the successful Configuring Cisco AVVID - Cisco engineers and other IT professionals will find this an indispensable guide when implementing AVVID - Author is Systems Engineer at Cisco

Download or read book The Road to IP Telephony written by Stephanie Carhee and published by Cisco Press. This book was released on 2004-06-28 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete IP Telephony migration planning guide Includes Steps to Success Poster It's everyone's "must have." This is a reference book for the entire project team who works on the deployment of an IP Telephony solution. Take advantage of best practices. Includes more than 200 best practices, lessons learned, and tips for getting you through your IP Telephony deployment successfully. Minimize risk and learn from the mistakes of others. Read the list of the top 10 things that can go wrong during an IP Telephony deployment. Ask the right questions. Get the project team thinking and collaborating together with Stephanie's "Checklist of Questions to Ask the Project Team." Use proven planning tools. Work from sample checklists, templates, project plans, and workflow documents to guide your planning process. Keep the Steps to Success on the minds of your project team. Use the enclosed poster, which illustrates every major step associated with an IP Telephony deployment. There is no better path to the successful implementation of a new technology than to follow in the experienced footsteps of an organization that has already been there. The Road to IP Telephony tells you how Cisco Systems successfully moved its own organization to a converged, enterprise-wide network. You will learn the implementation and operational processes, what worked, what didn't work, and how to develop your own successful methodology. After presenting this topic to hundreds of Cisco customers, including Fortune 500 companies, Stephanie Carhee consistently encountered the same question, "If I decide to move to IP Telephony, where do I begin and what can I do to ensure that I do it right the first time?" Although the needs of every enterprise are different, some things are universal; planning, communication, teamwork, and understanding your user's requirements are as important as technical expertise. The Road to IP Telephony shares with you everything you need to know about managing your deployment. It starts with where to begin, including what needs to be addressed before you even begin the planning process, to building your project team. Key best practices are also offered to help you set the project's pace and schedule, get your users on board, identify a migration strategy, develop a services and support strategy, and work toward the final PBX decommission. "Cisco IT wants to share its implementation experience with Cisco customers and partners to aide in the deployment practices of new Cisco technologies. While conducting our own company-wide cutover, we learned a great deal about what to do and what not to do. This book shares our experiences." -Brad Boston, Senior Vice President and Chief Information Officer, Cisco Systems, Inc. This volume is in the Network Business Series offered by Cisco Press. Books in this series provide IT executives, decision makers, and networking professionals with pertinent information on today's most important technologies and business strategies.

Download or read book IP Telephony written by Olivier Hersent and published by John Wiley & Sons. This book was released on 2011-06-13 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: All you need to know about deploying VoIP protocols in one comprehensive and highly practical reference - Now updated with coverage on SIP and the IMS infrastructure This book provides a comprehensive and practical overview of the technology behind Internet Telephony (IP), providing essential information to Network Engineers, Designers, and Managers who need to understand the protocols. Furthermore, the author explores the issues involved in the migration of existing telephony infrastructure to an IP - based real time communication service. Assuming a working knowledge of IP and networking, it addresses the technical aspects of real-time applications over IP. Drawing on his extensive research and practical development experience in VoIP from its earliest stages, the author provides an accessible reference to all the relevant standards and cutting-edge techniques in a single resource. Key Features: Updated with a chapter on SIP and the IMS infrastructure Covers ALL the major VoIP protocols – SIP, H323 and MGCP Includes a large section on practical deployment issues gleaned from the authors’ own experience Chapter on the rationale for IP telephony and description of the technical and business drivers for transitioning to all IP networks This book will be a valuable guide for professional network engineers, designers and managers, decision makers and project managers overseeing VoIP implementations, market analysts, and consultants. Advanced undergraduate and graduate students undertaking data/voice/multimedia communications courses will also find this book of interest. Olivier Hersent founded NetCentrex, a leading provider of VoIP infrastructure for service providers, then became CTO of Comverse after the acquisition of NetCentrex. He now manages Actility, provider of IMS based M2M and smartgrid infrastructure and applications.

Download or read book IP Telephony written by Olivier Hersent and published by John Wiley & Sons. This book was released on 2005-08-05 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: IP (internet protocol) Telephony, enabled by softswitches, isgoing to usher in a new era in telecommunications. By putting voiceand data over one IP network, operators can enjoy lower costs andcreate new, revenue-generating "multimedia" services. This valuable reference offers a comprehensive overview of thetechnology behind IP telephony and offers essential information tonetwork engineers, designers and managers who need to understandthe protocols and explore the issues involved in migrating theexisting telephony infrastructure to an IP-based real timecommunication service. Drawing on extensive research and practical developmentexperience in VoIP from its earliest stages, the authors giveaccess to all the relevant standards and cutting-edge techniques ina single resource. IP Telephony: Deploying Voice-over-IP Protocols: Assumes a working knowledge of IP and networking and addressesthe technical aspects of real-time communication over IP. Presents a high level overview of packet media transporttechnologies, covering all the major VoIP protocols – SIP,H323 and MGCP Details specific strategies to design services for publicnetworks where endpoints cannot be trusted and can be behindfirewalls. Explores the problems that may arise from incomplete protocolimplementations, or architectures optimized for private networkswhich fail in a public environment. This amply illustrated, state-of-the art reference tool will bean invaluable resource for all those involved in the practicaldeployment of VoIP technology.

Download or read book Carrier IP Telephony 2000 written by International Engineering Consortium and published by Intl. Engineering Consortiu. This book was released on 2000-12 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively examining IP telephony from the service provider's perspective, this book addresses the problems and possibilities associated with the future of telecom transport. Answering the crucial questionHow can established and emerging carriers leverage IP-telephony service?, this report presents a valuable compilation of the latest research and most provocative insight from a broad range of industry professionals. Here, service providers will find in-depth analysis of the issues that must be resolved before IP telephony can achieve carrier-class status.

Download or read book PBX Systems for IP Telephony written by Allan Sulkin and published by McGraw Hill Professional. This book was released on 2001-12-22 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calling all-- * telecom managers * datacom managers with voice responsibilities * Call Center managers * VoIP implementers * network integrators * product and service developers * industry analysts "Clear and precise analysis and discussion of PBX system design and capabilities. Allan Sulkin has a unique ability to explain complex systems in easily understandable terms." -- Joe Licata, President, Siemens Enterprise Networks "A welcome addition to the bookshelf for anyone interested in the evolving IP-PBX system. Voice and data communications managers alike will greatly benefit from this text." -- Michael Thurk, Avaya, Group Vice President - Systems "Allan Sulkin's solid expertise and critical insight has been a valuable resource for the telecommunications community for over 20 years. He is uniquely qualified to articulate the very complex subject of PBX and IP telephony." -- Kanji Suzuki, former EVP of NEC America and current president and CEO of NEC Infrontia, Inc. The most efficient (and economical) ways to bring enterprise communication systems into the Digital Age are in this guide, written by the foremost analyst in the markret space. In PBX Systems for IP Telephony, Allan Sulkin--consultant and advisor to Avaya, Siemens, Cisco, NEC, Alcatel and other world-class companies--evaluates technologies, markets, and best practices for enterprise voice systems, messaging, and customer contact centers. The heart and brains of your communications network, the PBX (Private Branch Exchange) can be the vital link--or the missing link--that interfaces businesses and their customers. This guide, from the recognized expert in telephony systems, provides answers. Whether you need to IP-enable a PBX system for a small business, make complex choices for the advanced call center, or gain the expertise to integrate a variety of communication systems into a state-of-the-art foundation for your e-business vision, PBX Systems for IP Telephony should be your first choice. Here's why: * No one knows PBX systems and markets better than the author, and no one is better at explaining them * This comprehensive resource supplies nuts-and-bolts information on costs, performance, risks, and other real-world considerations difficult to research * You get insights into the potential strengths and weaknesses of next-generation PBX systems * You'll consult the consultant to the system designers for practical advice on systems that fit your needs and your future * There's no more business-aware or user-friendly guide anywhere to converging your voice systems with your IP-based data systems When it comes to the PBX, the question often seems to be "Who's job is it anyway?" With this guidebook, you'll be ready to take the responsibility--and get the credit.