Deploying Voice over Wireless LANs: (Networking Technology)

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®, 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    

Table of Contents:
Part I Fundamental Elements Chapter 1 VoWLAN Applications and Benefits The Role of VoWLAN Solutions History of VoWLANs     VoIP     Wireless LANs Healthcare Enterprises Universities Retail Warehouses Manufacturing Small Offices and Homes Security Systems Determining ROI     Initial Analysis     Costs     Savings     Payback Period Chapter Summary Chapter Review Questions Chapter 2 VoWLAN System Components VoWLAN System Overview Cisco 7920 Wireless IP Phone Cisco IP Softphone Cisco CallManager Cisco CallManager Express Linksys Wi-Fi Video Cameras Wireless Network Infrastructures     Traditional Access Point Networks     Wireless Switched Networks     Mesh Networks Chapter Summary Chapter Review Questions Chapter 3 VoWLAN Signaling Fundamentals Voice Attributes Video Attributes VoIP 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 Rules Wireless Impairments     Poor Signal Coverage     Latency     RF Interference     Limited Capacity     Multipath Chapter Summary Chapter Review Questions Part II Critical Technologies Chapter 4 Wireless LAN Technologies Infrastructure Mode     Scanning     Data Transfer     Roaming Ad Hoc Mode Wireless Medium Access     DCF     PCF 802.11 Physical Layer Standards     802.11a     802.11b     802.11g     802.11n     Comparison of 802.11 Standards Wireless Configuration Parameters     SSID     RF Channels     Transmit Power     Data Rates     Power-Save Mode     RTS/CTS     Fragmentation     RTS/CTS and Fragmentation Summary Chapter Summary Chapter Review Questions Chapter 5 VoWLAN Security Solutions Security Implications     Passive Monitoring     Unauthorized Access     Denial of Service Encryption     WEP     TKIP     AES     WPA     802.11i     Virtual Private Networks Authentication     Open System Authentication     Shared Key Authentication     IEEE 802.1X     Cisco LEAP Tips for Enhancing Security     SSID Broadcasting     Systems Management     Access Point Installation     Rogue Access Points     Signal Propagation Chapter Summary Chapter Review Questions Part III Implementation Steps Chapter 6 Analyzing VoWLAN Requirements Overall Requirements Analysis Steps Identifying Potential Requirements     Applications     Users     Utilization     Coverage Areas     Roaming     Environment     Security     Client Devices     Existing Systems     Policies and Preferences     Budget     Schedules Verifying and Validating Requirements Documenting Requirements Chapter Summary Chapter Review Questions Chapter 7 Designing a VoWLAN Solution Overall Design Steps Deployment Models     Single-Site Architecture     Multisite WAN with Centralized Call Processing     Multisite WAN with Distributed Call Processing Roaming Security Network Infrastructure     Virtual LANs     Multicasting     Switch Recommendations     Quality of Service Placement of Access Points     Wireless Capacity Analysis     RF Site Survey Document Findings Chapter Summary Chapter Review Questions Chapter 8 Installing, Configuring, and Testing a VoWLAN System Installing Access Points     Getting Started     Mounting Practices     Antenna Alignment     Electrical Power Distribution Configuring Access Points     Configuration Setting Access     Firmware     VLANs     SSID     Transmit Power     RF Channel     Data Rates     Filtering     Protection Mechanisms Installing and Configuring Cisco CallManager Software     Cisco CallManager Software Installation     System Parameters     Subscriber Setup     Device Mobility Issues Configuring Wireless IP Phones     Firmware     Network Settings     RF Settings     Phone Settings Verifying System Operation     Association Tests     Authentication Tests     Registration Tests     Phone Call Tests     Load Tests     Follow-up Tests     Battery Life Issues Chapter Summary Chapter Review Questions Chapter 9 Supporting a VoWLAN System Configuration Management     RF Channel Changes     Transmit Power Changes     New Applications     Signal Coverage     Firmware Version     Security Improvement Network Monitoring     Performance Monitoring     Coverage Monitoring     Configuration Monitoring     Security Policy Management Security 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 Improvements Maintenance Functions     Inoperative Access Points     Poor Performance     Poor Signal Coverage     Broken Hardware     Keep Firmware Up to Date     Monitor Performance     Verify Coverage     Inspect Access Points Engineering Functions     Advanced Problem Resolution     Coverage Expansion     Capacity Increases     Firmware Review     Technology Upgrade     Design Review Help Desk Planning     Connection Problems     Poor Signal Coverage     Poor Performance     System Status     Additional Considerations CiscoWorks 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 Troubleshooting Chapter Summary Chapter Review Questions Appendix A Answers to Chapter Review Questions Glossary   1587052318    TOC    2/12/2007

About the Author :
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.