Preface Foreword Cisco IOS routers have shipped with voice interface cards since 1997, and after this capability was available the term voice gateway became part of the VoIP vernacular, seemingly overnight. The voice interfaces allowed routers to provide a critical interconnectivity link between the traditional data IP networks and the traditional voice PSTN, PBXs, and key systems networks. With this technology, the industry widely built toll bypass networks during the late 1990s: Enterprises connected their PBXs at different sites with VoIP "trunks" instead of with TIE lines or the PSTN, and service providers leveraged IP backbone networks to offer calling-card services and cut-rate long-distance and international calling. VoIP did not fascinate the popular imagination of the likes of Jeff Pulver of Voice-on-the Net VON and other industry observers until end-user-visible devices, such as IP phones, and IP-based applications brought the technology to the forefront. Voice gateway technology is still the pale sibling of the IP telephony world that creates no buzz, and yet it is also the workhorse of every single VoIP network. Even as VoIP endpoints become ever more prevalent in businesses and residences, voice gateways still provide critical interconnectivity with billions of traditional PSTN and PBX voice endpoints, without which companies cannot operate their communications networks. Although the idea of a voice gateway is conceptually simple enough-it's a demarcation between two networks and translates the protocols from one the TDM world to the other the IP world -the technology has become increasingly sophisticated and the features more intertwined over the years. Choosing the "right" voice gateway and configuring the "right" set of features for a particular network is no longer the task for the uninitiated. The question I hear most frequently is whether to deploy MGCP, H.323, or SIP gateways. Cisco gateways are protocol agnostic and support all of these protocols and several variations thereof, and the answer to the question posed is not a simple one: The optimal network design depends on a large number of considerations. Some protocols and designs are better suited to particular types of networks, partly owing to the architecture of the protocols themselves and partly due to the features that have been chosen for implementation over the years. A Cisco Press book with comprehensive coverage focused entirely on voice gateway technology and features was a long time coming, and at last with this book, the authors provide an in-depth look at the breadth of voice gateway features and capabilities, as well as providing voice gateway configuration guidance. The book explains the major VoIP protocols, MGCP, H.323, and SIP, their structure and operation, and the considerations to choose among them. It discusses in detail the PSTN and PBX circuit connection technologies and choices. There are often multiple connection choices on the central office or PBX switch as well as on the voice gateway side of the circuit, and which of these would provide the features, cost points, and manageability that are optimal for your network might not be obvious at first glance. The book goes on to provide insights into many other areas of gateway selection and deployment, including the myriad choices in carrying fax and modem traffic over IP, dial plan features and digit manipulation tools, call admission control capabilities to keep voice traffic off the IP network when it does not have the quality levels to carry it, a review of DSP technology and operation, and an examination of IP connectivity implications and QoS features required to carry voice traffic with decent quality. Later chapters in the book also include discussions on pure IP-oriented topics such as TCL and VXML applications capabilities, conference mixing, transcoding, gatekeeper functions and connectivity, and IP-to-IP gateway session border controller services and features. All of these pure VoIP services are offered by the same platforms that are also voice gateways, even though TDM connectivity is not a necessary component for the IP-only services. The book also covers key areas of interest in any network, including security measures and high availability. VoIP network security is a wide topic fully deserving of its own book-length treatment, but this book provides enough basic information to get your network deployed. It covers how voice gateway traffic passes through firewalls and NAT devices, how to encrypt voice signaling and media traffic to or from a voice gateway, as well as configuring class of service restrictions such that certain call patterns are allowed while others are blocked per the policy of your network. High availability is essential in all networks-a chapter in this book is dedicated to the discussion of how gateways fail over when other network components are out of contact, as well as how gateway features interoperate with IP Phone failover features such as SRST to maintain dial tone and PSTN network access for your end users at all times. Throughout the book is a case study that solidifies the chapter discussions by providing practical, hands-on examples of how the configuration of the system implements the features. This, together with the detailed chapter-by-chapter coverage of crucial gateway topics, make this an invaluable book essential to the tool chest of anyone contemplating the implementation of a new network, actively designing a network, or evolving or optimizing the features in an existing network. Christina HattinghAccess Technology GroupCisco Systems, Inc.

Cisco Voice Gateways And Gatekeepers

Computers & Technology

Donohue, Denise

Mallory, David

Salhoff, Ken

Certification

Cisco Systems

<ul>
<li> Master CCIE Routing and Switching 4.0 blueprint exam topics </li>
<li> Assess your knowledge with chapter-opening quizzes </li>
<li> Review key concepts with Exam Preparation Tasks </li>
<li> Practice with realistic exam questions on the CD-ROM </li> </ul>
 CCIE Routing and Switching Certification Guide, Fourth Edition, is a best-of-breed Cisco® exam study guide that focuses specifically on the objectives for the CCIE® Routing and Switching written exam. Well-respected networking professionals Wendell Odom, Rus Healy, and Denise Donohue share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. CCIE Routing and Switching Certification Guide, Fourth Edition, presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and allow you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks sections help drill you on key concepts you must know thoroughly. The companion CD-ROM contains a powerful testing engine that allows you to focus on individual topic areas or take complete, timed exams. The assessment engine also tracks your performance and provides feedback on a module-by-module basis, presenting question-by-question remediation to the text and laying out a complete study plan for review. Well regarded for its level of detail, assessment features, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that will enable you to succeed on the exam the first time. CCIE Routing and Switching Certification Guide, Fourth Edition, is part of a recommended learning path from Cisco that includes 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. The official study guide helps you master all the topics on the CCIE Routing and Switching written exam, including: <ul>
<li> Bridging and LAN switching </li>
<li> IP addressing, IP services, TCP, UDP, and application protocol details </li>
<li> Layer 3 forwarding concepts </li>
<li> EIGRP, OSPF, and BGP routing protocols </li>
<li> Quality of service </li>
<li> Frame Relay </li>
<li> MPLS </li>
<li> IP multicast </li>
<li> IPv6 </li>
<li> Router and switch security </li>
<li> Troubleshooting </li> </ul>
Companion CD-ROM The CD-ROM contains 200 practice questions for the exam. This volume is part of the Certification Guide Series from Cisco Press®. Books in this series provide officially developed exam preparation materials that offer assessment, review, and practice to help Cisco Career Certification candidates identify weaknesses, concentrate their study efforts, and enhance their confidence as exam day nears. Category: Cisco Press–Cisco Certification Covers: CCIE Routing and Switching written exam 350-001 v4.0

CCIE Routing and Switching Certification Guide

Odom, Wendell

Healy, Rus

The Art of Network Architecture Business-Driven Design The business-centered, business-driven guide to architecting and evolving networks The Art of Network Architecture is the first book that places business needs and capabilities at the center of the process of architecting and evolving networks. Two leading enterprise network architects help you craft solutions that are fully aligned with business strategy, smoothly accommodate change, and maximize future flexibility. Russ White and Denise Donohue guide network designers in asking and answering the crucial questions that lead to elegant, high-value solutions. Carefully blending business and technical concerns, they show how to optimize all network interactions involving flow, time, and people. The authors review important links between business requirements and network design, helping you capture the information you need to design effectively. They introduce today’s most useful models and frameworks, fully addressing modularity, resilience, security, and management. Next, they drill down into network structure and topology, covering virtualization, overlays, modern routing choices, and highly complex network environments. In the final section, the authors integrate all these ideas to consider four realistic design challenges: user mobility, cloud services, Software Defined Networking (SDN), and today’s radically new data center environments. • Understand how your choices of technologies and design paradigms will impact your business • Customize designs to improve workflows, support BYOD, and ensure business continuity • Use modularity, simplicity, and network management to prepare for rapid change • Build resilience by addressing human factors and redundancy • Design for security, hardening networks without making them brittle • Minimize network management pain, and maximize gain • Compare topologies and their tradeoffs • Consider the implications of network virtualization, and walk through an MPLS-based L3VPN example • Choose routing protocols in the context of business and IT requirements • Maximize mobility via ILNP, LISP, Mobile IP, host routing, MANET, and/or DDNS • Learn about the challenges of removing and changing services hosted in cloud environments • Understand the opportunities and risks presented by SDNs • Effectively design data center control planes and topologies

Art of Network Architecture, The: Business-Driven Design (Networking Technology)

White, Russ

Cisco Press

Cisco Voice Gateways and Gatekeepers provides detailed solutions to real-world problems encountered when implementing a VoIP network. Each chapter presents an overview of a technology followed by a detailed scenario and associated solutions. Emphasis is placed on the accepted best practices and common issues encountered. It will initially serve readers as a reference for complex gateway and gatekeeper deployments and will also be a valuable study aid for the Cisco Certifified Voice Professional (CCVP) certification track. Cisco Voice Gateways and Gatekeepers is divided into five sections. Part one provides an introduction to the roles of both gateways and gatekeepers and includes advice on when to use each. Part two focuses on deploying gateways; working with MGCP, H.323, and SIP; connecting to the PSTN, PBXs, and the IP WAN; configuring basic and advanced dial peers; and implementing SRST. Part Three focuses on deploying and configuring gatekeepers. Part four discusses use of gateways and gatekeepers in a service provider environment. Part five addresses use of the Cisco Tool Command Language (TCL). This book is also recommended self-study training for the CCVP GWGK exam.

Cisco Voice Gateways and Gatekeepers (Networking Technology)

Networking & Cloud Computing

Are you ready to take the ROUTE, SWITCH, or TSHOOT exams for CCNP certification? You’ve learned the concepts, you have the experience to put them to real-world use, and now you want to practice, practice, practice until exam time. CCNP Routing and Switching v2.0 Exam Practice Pack, gives you three methods of proven, late-stage exam preparation in one package. Test Engine The CCNP practice exam engine includes hundreds of exam-realistic practice exam questions in the powerful Pearson IT Certification Practice test software for each of the three ROUTE, SWITCH, and TSHOOT exams. Flash Cards More than 900 flash cards in customizable sets that you can tailor to your study needs. Available in the unique Cert Flash Cards Online application, so you can access from your desktop or favorite mobile devices. Quick Reference Guides All exam topics are covered for a quick review and refresh in a comprehensive graphical quick reference guides for each exam. What's in the package? This product includes a print copy of the quick reference guides for all three CCNP Routing and Switching exams. The CD that accompanies the book provides readers with access to the flash cards in the Pearson IT Certification Cert Flash Cards Online application. User can also install and access the practice tests for all three exams by installing the Pearson IT Certification practice test software on the CD.

CCNP Routing and Switching v2.0 Exam Practice Pack

Stewart, Brent

Prepare for all four of the most current CCNP exams with more than 1,200 flash cards, practice test questions, and quick reference sheets
<ul>
<li>Check topic comprehension with more than 1,200 physical cards that are also downloadable to PC, Palm OS, and Pocket PC</li>
<li>Practice for exams with an electronic testing engine that includes more than 800 questions covering all four exams</li>
<li>Review exam topics with Quick Reference cards organized by exam</li>
<li>Build confidence with tools from the only Cisco Systems authorized publisher</li>
</ul>
The CCNP Flash Cards and Exam Practice Pack (CCNP Self-Study) provides final-stage preparation tools for the new CCNP exams announced by Cisco Systems in April 2003. These exams, 642-801 BSCI, 642-811 BCMSN, 642-821 BCRAN, and 642-831 CIT, have all been rewritten with new topical coverage updated to teach networking professionals what they need to know to manage their networks. The elements of this title have been created to provide comprehensive coverage of the new topics in all four exams.
As a final preparation tool for the four CCNP exams, this product complements official Cisco curriculum, other books, and other exam preparatory material. It marries three uniquely successful and complementary methods of late-stage test preparation. The Pack contains a testing engine with more than 800 questions, including simulation based questions. The flash cards come in a printed format, and can also be downloaded to PC, Windows Pocket PC, and Palm OS via the included CD-ROM for ultimate portability. Fact-filled Study Sheets allow readers to review important exam topics, organized by exam.

CCNP Flash Cards and Exam Practice Pack (CCNP Self-Study, 642-801, 642-811, 642-821, 642-831)

Sammut, Tim

CCNP Quick Reference A quick review of CCNP exam topics Denise Donohue, CCIE® No. 9566 Brent Stewart Jerold Swan, CCIE No.17783 As a final exam preparation tool, the CCNP Quick Reference provides a concise review of all objectives on the four CCNP exams, including BSCI (642-901), BCMSN (642-812), ISCW (642-825) and ONT (642-845). This book provides you with detailed, graphical-based information, highlighting only the key topics in cram-style format. The easy-to-reference format and succinct presentation help you drill on key exam topics. With this document as your guide, you will review topics on routing, switching, secure remote access networks, network security, and quality of service (QoS). This fact-filled Quick Reference allows you to get all-important information at a glance, helping you to focus your study on areas of weakness and to enhance memory retention of essential exam concepts. CCNP Quick Reference is part of a recommended learning path from Cisco® that includes 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. Denise Donohue, CCIE® No. 9566, is manager of Solutions Engineering for ePlus Technology in Maryland. Denise was a Cisco instructor and course director for Global Knowledge and did network consulting for many years. Brent Stewart, CCNP®, CCDP®, CCSI, MCSE, is a network administrator for CommScope. He is responsible for designing and managing a large-scale worldwide IP network. He participated in the development of BSCI with Cisco and has written and taught extensively on CCNA® and CCNP. Jerold Swan, CCIE No. 17783, CCNP, CCSP®, is a senior network engineer for the Southern Ute Indian Tribe Growth Fund in Ignacio, CO. Prior to that he was a Cisco instructor and course director for Global Knowledge. Complete coverage of all four CCNP exams: • EIGRP, OSPF, IS-IS, and BGP • Optimizing routing • IP multicast • IPv6 • VLAN implementation • Spanning Tree • InterVLAN routing • Layer 3 redundancy • Wireless LANs • VoIP in campus networks • Campus network security • Frame-mode MPLS • IPsec • Cisco device hardening • Cisco IOS® threat defenses • Cisco VoIP • QoS and AutoQoS • Wireless scalability This volume is part of the Quick Reference series from Cisco Press. Products in this series provide exam candidates with a concise review to help reinforce knowledge of key exam topics. Category: Cisco Press—Cisco Certification Covers: BSCI (642-901), BCMSN (642-812), ISCW (642-825) and ONT (642-845) $29.99 USA / $32.99 CAN

CCNP Quick Reference

Swan, Jerold

As a final preparation tool providing a review of CCNP exam topics, the CCNP Quick Reference 2/e complements official Cisco curriculum, other books, or other exam preparatory material in a candidates preparation for the four CCNP exams. This concise guide provides you with detailed, graphical-based information, highlighting only the key topics on the latest CCNP exams in a review-style format. This fact-filled Quick Reference allows you to get all-important information at a glance, helping you to focus your study on areas of weakness and to enhance memory retention of important concepts. This book provides a comprehensive final review for candidates taking any of the CCNP exams. It steps through exam objectives one-by-one, providing concise and accurate review for all topics. Using this book, you will be able to easily and effectively review test objectives without having to wade through numerous books and documents for relevant content for final review.

CCNP Routing and Switching Quick Reference

CCNP ROUTE 642-902 Cert Kit is a best of breed late-stage preparation package that combines three self-study tools into one value-priced package. This product provides you with over 6 hours of personal instruction from Sr. instructor Kevin Wallace on the Routing Video Mentor, a concise review of CCNP ROUTE exam topics in the CCNP ROUTE Quick Reference, and 300 exam review questions in both desktop and mobile formats in the CCNP ROUTE Cert Flash Cards Online. The Routing Video Mentor is a DVD video product. The DVD contains a series of short instructional videos that demonstrate how to accomplish some of the most common configuration and troubleshooting tasks and how to verify that the network is working correctly. The DVD contains 15 individual videos for a total of about six hours of instruction. CCNP ROUTE Quick Reference provides detailed, graphical-based information, highlighting only the key topics on the CCNP ROUTE exam in cram-style format. Provided electronically and in print, this Quick Reference allows you to get all-important information at a glance, helping focus on areas of weakness and enhance memory retention of important concepts. CCNP ROUTE Cert Flash Cards Online provides a concise review of all objectives on the CCNP ROUTE 642-902 exam. This online exam preparation tool consists of a custom flash card application loaded with over 300 total questions that test your skills and enhance retention of exam topics, both via PC and mobile device. <ul>
<li>Combines three effective self-study tools into one value-priced package </li>
<li>The Routing Video Mentor contains 15 individual videos for six hours of instruction </li>
<li>The Cert Flash Cards Online provide 300 online flash cards for mobile and desktop devices </li>
<li>The CCNP ROUTE Quick Reference provides a late stage prep booklet</li> </ul>

CCNP Route 642-902 Cert Kit: Video, Flash Card, and Quick Reference Preparation Package

Wallace, Kevin

CCNP SWITCH 642-813 Cert Kit is a best of breed late-stage preparation package that combines three self-study tools into one value-priced package. This product provides you with over 6 hours of personal instruction from Sr. instructor Dave Hucaby on the LAN Switching Video Mentor, a concise review of CCNP SWITCH exam topics in the CCNP SWITCH Quick Reference, and 300 exam review questions in both desktop and mobile formats in the CCNP SWITCH Cert Flash Cards Online. LAN Switching Video Mentor is a DVD video product. The DVD contains a series of short instructional videos that demonstrate how to accomplish some of the most common configuration and troubleshooting tasks on the Catalyst platforms and how to verify that the network is working correctly. The DVD contains 20 individual videos for a total of about six hours of instruction. CCNP SWITCH Quick Reference provides you with detailed, graphical-based information, highlighting only the key topics on the CCNP SW

CCNP Switch 642-813 Cert Kit: Video, Flash Card, and Quick Reference Preparation Package (Cert Kits)

Hucaby, David

Wilkins, Sean

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