Deploying Voice over Wireless LANs

Deploying Voice over Wireless LANs

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Deploying Voice over Wireless LANs The definitive guide to planning, architecting, deploying, supporting, and creating Voice over Wireless LAN solutions Recent advances make it possible to deliver high-quality voice and video communications over a wireless LAN (WLAN), replacing costly wired telephone and video surveillance systems and dramatically reducing support costs. However, today's new voice over WLAN (VoWLAN) technologies require fundamentally different skills and techniques from those used in traditional voice and video systems. Now, there's a complete guide to every facet of VoWLAN deployment: planning, design, installation, security, maintenance, and troubleshooting. Authored by wireless industry expert and leader Jim Geier, Deploying Voice over Wireless LANs draws on Geier's extensive experience with real-world VoWLAN deployments. Geier brings together state-of-the-art insights into VoWLAN technologies, standards, products, services, implementation strategies, and much more. Geier begins by introducing key components of today's VoWLAN systems, including phones, client software, and voice encoders/decoders, as well as VoWLAN signaling essentials such as analog-to-digital (A/D) conversion and compression. Using examples drawn from actual enterprise settings, you'll learn exactly how VoWLAN products integrate with existing IP infrastructure. Next, he introduces crucial emerging 802.11 standards for effective VoWLAN deployment, including 802.11e quality of service (QoS) standards, 802.11r to minimize packet loss between access points, and 802.11k network discovery. He carefully reviews the security implications of VoWLAN voice, systematically covering both risks and countermeasures. Finally, Geier walks through implementation from start to finish, thoroughly covering analysis, design, installation, configuration, testing, and support. Whatever your role in planning, delivering, managing, or creating wireless voice and video solutions, Deploying Voice over Wireless LANs is your most comprehensive, authoritative resource. Jim Geier founded Wireless-Nets, Ltd., and serves as its principal consultant. His 25 years of experience includes the analysis, design, software development, installation, and support of numerous wireless networking systems. He has been active within the Wi-Fi Alliance and the IEEE 802.11 Working Group and helped develop international standards for WLANs. His books include Wireless Networks First Step (Cisco Press), Wireless LANs (Sams), Wireless Networking Handbook (MTP), and Network Reengineering. Understand VoWLAN components, applications, and benefits See VoWLAN at work in actual enterprise environments Master VoWLAN signaling, including voice signal characteristics, A/D conversion, and compression Discover the latest 802.11 VoWLAN standards, including 802.11e, 802.11r, and 802.11k Secure IP-based VoWLAN systems against intrusion and compromise Analyze your organization's requirements and design an optimal VoWLAN solution Plan for capacity, roaming, and integration with cellular systems Install, configure, test, verify, and validate your VoWLAN system Plan for operational support and implement appropriate administration tools and methods Includes a complete VoWLAN glossaryPart I Fundamental ElementsChapter 1 VoWLAN Applications and BenefitsChapter 2 VoWLAN System ComponentsChapter 3 VoWLAN Signaling FundamentalsPart II Critical TechnologiesChapter 4 Wireless LAN TechnologiesChapter 5 VoWLAN Security SolutionsPart III Implementation StepsChapter 6 Analyzing VoWLAN RequirementsChapter 7 Designing a VoWLAN SolutionChapter 8 Installing, Configuring, and Testing a VoWLAN SystemChapter 9 Supporting a VoWLAN SystemAppendix A Answers to Chapter Review QuestionsGlossaryThis book is part of the Networking Technology Series from Cisco Press (R), which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers. Category: Cisco Press-NetworkingCovers: Voice over Wireless LAN Solutions
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Product details

  • Hardback | 264 pages
  • 190.5 x 233.7 x 20.3mm | 589.68g
  • Pearson Education (US)
  • Cisco Press
  • Indianapolis, United States
  • English
  • New.
  • 1587052318
  • 9781587052316
  • 2,521,735

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"Deploying Voice over Wireless LANs" The definitive guide to planning, architecting, deploying, supporting, and creating Voice over Wireless LAN solutions Recent advances make it possible to deliver high-quality voice and video communications over a wireless LAN (WLAN), replacing costly wired telephone and video surveillance systems and dramatically reducing support costs. However, today's new voice over WLAN (VoWLAN) technologies require fundamentally different skills and techniques from those used in traditional voice and video systems. Now, there's a complete guide to every facet of VoWLAN deployment: planning, design, installation, security, maintenance, and troubleshooting. Authored by wireless industry expert and leader Jim Geier, Deploying Voice over Wireless LANs draws on Geier's extensive experience with real-world VoWLAN deployments. Geier brings together state-of-the-art insights into VoWLAN technologies, standards, products, services, implementation strategies, and much more. Geier begins by introducing key components of today's VoWLAN systems, including phones, client software, and voice encoders/decoders, as well as VoWLAN signaling essentials such as analog-to-digital (A/D) conversion and compression. Using examples drawn from actual enterprise settings, you'll learn exactly how VoWLAN products integrate with existing IP infrastructure. Next, he introduces crucial emerging 802.11 standards for effective VoWLAN deployment, including 802.11e quality of service (QoS) standards, 802.11r to minimize packet loss between access points, and 802.11k network discovery. He carefully reviews the security implications of VoWLAN voice, systematically covering both risks and countermeasures. Finally, Geier walks through implementation from start to finish, thoroughly covering analysis, design, installation, configuration, testing, and support. Whatever your role in planning, delivering, managing, or creating wireless voice and video solutions, Deploying Voice over Wireless LANs is your most comprehensive, authoritative resource. Jim Geier founded Wireless-Nets, Ltd., and serves as its principal consultant. His 25 years of experience includes the analysis, design, software development, installation, and support of numerous wireless networking systems. He has been active within the Wi-Fi Alliance and the IEEE 802.11 Working Group and helped develop international standards for WLANs. His books include Wireless Networks First Step (Cisco Press), Wireless LANs (Sams), Wireless Networking Handbook (MTP), and Network Reengineering. Understand VoWLAN components, applications, and benefits See VoWLAN at work in actual enterprise environments Master VoWLAN signaling, including voice signal characteristics, A/D conversion, and compression Discover the latest 802.11 VoWLAN standards, including 802.11e, 802.11r, and 802.11k Secure IP-based VoWLAN systems against intrusion and compromise Analyze your organization's requirements and design an optimal VoWLAN solution Plan for capacity, roaming, and integration with cellular systems Install, configure, test, verify, and validate your VoWLAN system Plan for operational support and implement appropriate administration tools and methods Includes a complete VoWLAN glossary Part I Fundamental Elements Chapter 1 VoWLAN Applications and Benefits Chapter 2 VoWLAN System Components Chapter 3 VoWLAN Signaling Fundamentals
Part II Critical Technologies Chapter 4 Wireless LAN Technologies Chapter 5 VoWLAN Security Solutions
Part III Implementation Steps Chapter 6 Analyzing VoWLAN Requirements Chapter 7 Designing a VoWLAN Solution Chapter 8 Installing, Configuring, and Testing a VoWLAN System Chapter 9 Supporting a VoWLAN System Appendix A Answers to Chapter Review Questions Glossary
This book is part of the Networking Technology Series from Cisco Press(R), which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers. Category: Cisco Press-Networking Covers: Voice over Wireless LAN Solutions
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About Jim Geier

Jim Geier is the founder of Wireless-Nets, Ltd., and the company's principal consultant. His 25 years of experience includes the analysis, design, software development, installation, and support of numerous wireless network-based systems for enterprises, airports, homes, retail stores, manufacturing facilities, warehouses, hospitals, and cities worldwide. Jim has been active within the Wi-Fi Alliance, responsible for certifying interoperability of 802.11 (Wi-Fi) wireless LANs. He has also been active with the IEEE 802.11 Working Group, responsible for developing international standards for wireless LANs. He served as Chairman of the IEEE Computer Society, Dayton Section, and Chairman of the IEEE International Conference on Wireless LAN Implementation. Jim is an advisory board member of several leading wireless LAN companies. Jim is the author of several books, including Wireless Networks First Step (Cisco Press), Wireless LANs (Sams), Wireless Networking Handbook(MTP), and Network Reengineering(McGraw-Hill), as well as numerous articles. Jim's education includes a bachelor's and master's degree in electrical engineering and a master's degree in business administration. Contact Jim Geier at jimgeier@wireless-nets.com.
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Table of contents

Part I Fundamental ElementsChapter 1 VoWLAN Applications and BenefitsThe Role of VoWLAN SolutionsHistory of VoWLANs VoIP Wireless LANsHealthcareEnterprisesUniversitiesRetailWarehousesManufacturingSmall Offices and HomesSecurity SystemsDetermining ROI Initial Analysis Costs Savings Payback PeriodChapter SummaryChapter Review QuestionsChapter 2 VoWLAN System ComponentsVoWLAN System OverviewCisco 7920 Wireless IP PhoneCisco IP SoftphoneCisco CallManagerCisco CallManager ExpressLinksys Wi-Fi Video CamerasWireless Network Infrastructures Traditional Access Point Networks Wireless Switched Networks Mesh NetworksChapter SummaryChapter Review QuestionsChapter 3 VoWLAN Signaling FundamentalsVoice AttributesVideo AttributesVoIP Call Flow H.323 Skinny Client Control Protocol (SCCP) Session Initiation Protocol (SIP)Radio Frequency (RF) Signals Modulation RF Signal Characteristics Gain Signal-to-Noise Ratio Spread Spectrum Orthogonal Frequency Division Multiplexing (OFDM) FCC RulesWireless Impairments Poor Signal Coverage Latency RF Interference Limited Capacity MultipathChapter SummaryChapter Review QuestionsPart II Critical TechnologiesChapter 4 Wireless LAN TechnologiesInfrastructure Mode Scanning Data Transfer RoamingAd Hoc ModeWireless Medium Access DCF PCF802.11 Physical Layer Standards 802.11a 802.11b 802.11g 802.11n Comparison of 802.11 StandardsWireless Configuration Parameters SSID RF Channels Transmit Power Data Rates Power-Save Mode RTS/CTS Fragmentation RTS/CTS and Fragmentation SummaryChapter SummaryChapter Review QuestionsChapter 5 VoWLAN Security SolutionsSecurity Implications Passive Monitoring Unauthorized Access Denial of ServiceEncryption WEP TKIP AES WPA 802.11i Virtual Private NetworksAuthentication Open System Authentication Shared Key Authentication IEEE 802.1X Cisco LEAPTips for Enhancing Security SSID Broadcasting Systems Management Access Point Installation Rogue Access Points Signal PropagationChapter SummaryChapter Review QuestionsPart III Implementation StepsChapter 6 Analyzing VoWLAN RequirementsOverall Requirements Analysis StepsIdentifying Potential Requirements Applications Users Utilization Coverage Areas Roaming Environment Security Client Devices Existing Systems Policies and Preferences Budget SchedulesVerifying and Validating RequirementsDocumenting RequirementsChapter SummaryChapter Review QuestionsChapter 7 Designing a VoWLAN SolutionOverall Design StepsDeployment Models Single-Site Architecture Multisite WAN with Centralized Call Processing Multisite WAN with Distributed Call ProcessingRoamingSecurityNetwork Infrastructure Virtual LANs Multicasting Switch Recommendations Quality of ServicePlacement of Access Points Wireless Capacity Analysis RF Site SurveyDocument FindingsChapter SummaryChapter Review QuestionsChapter 8 Installing, Configuring, and Testing a VoWLAN SystemInstalling Access Points Getting Started Mounting Practices Antenna Alignment Electrical Power DistributionConfiguring Access Points Configuration Setting Access Firmware VLANs SSID Transmit Power RF Channel Data Rates Filtering Protection MechanismsInstalling and Configuring Cisco CallManager Software Cisco CallManager Software Installation System Parameters Subscriber Setup Device Mobility IssuesConfiguring Wireless IP Phones Firmware Network Settings RF Settings Phone SettingsVerifying System Operation Association Tests Authentication Tests Registration Tests Phone Call Tests Load Tests Follow-up Tests Battery Life IssuesChapter SummaryChapter Review QuestionsChapter 9 Supporting a VoWLAN SystemConfiguration Management RF Channel Changes Transmit Power Changes New Applications Signal Coverage Firmware Version Security ImprovementNetwork Monitoring Performance Monitoring Coverage Monitoring Configuration Monitoring Security Policy ManagementSecurity Assessment Steps Review Existing Security Policies Review the System Architecture Review Operational Support Tools and Procedures Interview Users Verify Configurations of Wireless Devices Investigate Physical Installations of Access Points Identify Rogue Access Points Perform Penetration Tests Analyze Security Gaps Recommend ImprovementsMaintenance Functions Inoperative Access Points Poor Performance Poor Signal Coverage Broken Hardware Keep Firmware Up to Date Monitor Performance Verify Coverage Inspect Access PointsEngineering Functions Advanced Problem Resolution Coverage Expansion Capacity Increases Firmware Review Technology Upgrade Design ReviewHelp Desk Planning Connection Problems Poor Signal Coverage Poor Performance System Status Additional ConsiderationsCiscoWorks Wireless LAN Solution Engine Automatic Access Point Configuration Assisted Site Surveys Centralized Firmware Updates Dynamic Grouping VLAN Configuration Multiple SSID Support Customizable Thresholds Fault Status Intrusion Detection System Security Policy Monitoring Secure User Interface Air/RF Scanning and Monitoring Self-healing Functions Reporting, Trending, Planning, and TroubleshootingChapter SummaryChapter Review QuestionsAppendix A Answers to Chapter Review QuestionsGlossary 1587052318 TOC 2/12/2007
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