Front cover -- Voice Over WLANs: The Complete Guide -- Copyright page -- Table of contents -- About the Author -- Preface -- Acknowledgments -- CHAPTER 1: The Convergence of Wireless LANs and VoIP -- 1.1 The WLAN Voice Market -- 1.2 Development of Wireless LANs -- 1.3 Wireless LAN Applications -- 1.4 Health Issues with Wireless Devices -- 1.5 Wireless LAN Organizations -- 1.6 WLAN Configurations -- 1.7 Wireless LAN Design Issues -- 1.8 The Packet Telephony Revolution -- 1.9 Local Area IP Telephony: IP PBX -- 1.10 Wide Area VoIP -- 1.11 Enterprise VoIP Networks -- 1.12 Consumer Packet Telephony Services -- 1.13 Conclusion -- CHAPTER 2: Radio Transmission Fundamentals -- 2.1 Defining Transmission Capacity and Throughput -- 2.2 Bandwidth, Radios, and Shannon's Law -- 2.3 Bandwidth Efficiency -- 2.4 Forward Error Correction (FEC) -- 2.5 Radio Regulation -- 2.6 Licensed Versus Unlicensed Radio Spectrum -- 2.7 Unlicensed Spectrum in the Rest of the World -- 2.8 General Difficulties in Wireless -- 2.9 Basic Characteristics of 802.11 Wireless LANs -- 2.10 Conclusion -- CHAPTER 3: Wireless LAN Components/WLAN Switches -- 3.1 Elements in a Wireless LAN -- 3.2 Wireless LAN NICs -- 3.3 Access Points (APs) -- 3.4 Antennas -- 3.5 Distributed Antenna Systems -- 3.6 WLAN Repeaters -- 3.7 Mesh Extension -- 3.8 Wireless LAN Switches -- 3.9 Wireless LAN Switch Features -- 3.10 Selecting WLAN Switches -- 3.11 WLAN Switch Architectures -- 3.12 Conclusion -- CHAPTER 4: Media Access Control Protocol -- 4.1 Basic Characteristics and Peculiarities of Wireless LANs -- 4.2 Media Access Control Protocol-CSMA/CA -- 4.4 Physical Layer Convergence Protocol (PLCP) -- 4.5 MAC Frame Header -- 4.6 MAC Addresses (Address 1-4) -- 4.7 Authentication and Association -- 4.8 Beacon Message -- 4.9 Authentication Process -- 4.10 Association Options -- 4.11 Reassociation/Handoff.

4.12 CSMA/CA Distributed Control Function (DCF) -- 4.13 Request-To-Send/Clear-To-Send (RTS/CTS) Operation -- 4.14 Point Control Function (PCF) -- 4.15 PCF Basic Concept -- 4.16 Other Protocol Features -- 4.17 Power Save Features -- 4.18 Throughput Considerations -- 4.19 Conclusion -- CHAPTER 5: 802.11 Radio Link Specifications -- 5.1 Defined Radio Link Interfaces -- 5.2 Signal Modulation -- 5.3 Spread Spectrum Transmission -- 5.4 Frequency Hopping Spread Spectrum (FHSS) -- 5.5 Direct Sequence Spread Spectrum (DSSS) -- 5.6 Orthogonal Frequency Division Multiplexing (OFDM) -- 5.7 Forward Error Correction (FEC) -- 5.8 The 2.4 GHz Radio Links -- 5.9 802.11 Radio Link Options: 1 and 2 Mbps -- 5.10 Frequency Hopping Spread Spectrum -- 5.11 802.11 DSSS Radio Link -- 5.12 802.11b Radio Link Interface: DSSS -- 5.13 IEEE 802.11g Radio Link Interface: OFDM -- 5.14 802.11a 5 GHz Radio Link Interface -- 5.15 Additional 5 MHz Spectrum: 11 Additional Channels -- 5.16 Tradeoffs with 802.11a -- 5.17 The Developing IEEE 802.11n Radio Link -- 5.18 The IEEE 802.11n Draft Specification -- 5.19 Non-Standard Radio Links: Pre-n and Super G -- 5.20 Conclusion -- CHAPTER 6: Privacy and Security Issues in WLANs -- 6.1 Security Requirements: Authentication, Privacy, and Availability -- 6.2 WLAN Security Policy Recommendations -- 6.3 WLAN Security Exposure -- 6.4 Recognized Security Vulnerabilities -- 6.5 Three Generations of WLAN Security -- 6.6 Wired Equivalent Privacy (WEP) -- 6.7 How Vulnerable is WEP? -- 6.8 The VLAN/VPN Stopgap -- 6.9 New Wireless LAN Security Protocols: 802.11i and 802.1x -- 6.10 802.11i/WPA2: Advanced Encryption Standard (AES) -- 6.11 Implementation Difficulties -- 6.12 Wi-Fi Alliance's Wi-Fi Protected Access (WPA Certified) -- 6.13 WPA and WPA2 Implementation: Personal Versus Enterprise -- 6.14 Extensible Authentication Protocol (EAP): 802.1x.

6.15 802.1x Authentication Protocols -- 6.16 Wireless Intrusion Detection and Network Access Control Systems -- 6.17 Network Access Control (NAC) -- 6.18 Special Issues in WLAN Voice Security -- 6.19 Solutions for Mixed Security Environments -- 6.20 Conclusion -- CHAPTER 7: IP Routing for Voice -- 7.1 Protocols, Compatibility, and The OSI Reference Model -- 7.2 The Open Systems Interconnection (OSI) Reference Model -- 7.3 OSI Layers and Functions -- 7.4 The Internet and TCP/IP -- 7.5 Overall Organization of TCP/IP -- 7.6 Dissecting TCP/IP -- 7.7 TCP and UDP Supported Applications -- 7.8 TCP/IP Protocols for Voice: RTP and RTCP -- 7.9 Real-Time Control Protocol (RTCP) -- 7.10 Quality of Service -- 7.11 Layer 2 QoS Options -- 7.12 Layer 3 QoS -- 7.13 MPLS-Based VPN Service: RFC 2547bis -- 7.14 MPLS Service Classes -- 7.15 Excess Traffic Handling -- 7.16 VoIP Signaling Protocols -- 7.17 Session Initiation Protocol (SIP) -- 7.18 Conclusion -- CHAPTER 8: Quality Issues in IP Telephony -- 8.1 Quality Issues in Packet Telephony -- 8.2 Voice Compression Techniques -- 8.3 Other Voice Quality Issues -- 8.4 Voice Compression in WLAN Voice Networks -- 8.5 Delay Tolerance -- 8.6 Jitter/Delay Sources -- 8.7 Real-Time Transport Protocol (RTP) -- 8.8 Echo Control -- 8.9 Measuring Voice Quality -- 8.10 Absolute Category Rating (ACR)/Mean Opinion Score (MOS) -- 8.11 Sample-Based Objective Testing: ITU P.861, P.862, and P.563 -- 8.12 Other Factors in Voice Quality -- 8.13 Conclusion -- CHAPTER 9: Voice Network Design and Traffic Engineering -- 9.1 Business Telephone Systems: Electronic Key Telephone and PBX Systems -- 9.2 User Stations -- 9.3 Telephone Network Services -- 9.4 Telephone Traffic Engineering -- 9.5 Traffic Engineering Terms -- 9.6 P-Grade of Service/Probability of Blocking -- 9.7 Traffic Engineering Process.

9.8 Voice Traffic Engineering for IP Voice Systems -- 9.9 Voice Traffic Engineering in WLAN Networks -- 9.10 Conclusion -- CHAPTER 10: WLAN Voice Configuration -- 10.1 Voice over WLAN Architectures -- 10.2 Wireless LAN Switch -- 10.3 Voice over WLAN Handsets/Clients -- 10.4 Enterprise Voice over Wireless LAN Systems -- 10.5 Wi-Fi Cellular Handsets -- 10.6 Wi-Fi PDAs and Softphone Clients -- 10.7 What to Look For in Wi-Fi Handsets -- 10.8 DECT (Digital Enhanced Cordless Telecommunication) Standard -- 10.9 Conclusion -- CHAPTER 11:Technical Requirements for WLAN Voice -- 11.1 Pervasive WLAN Infrastructure -- 11.2 VoIP Quality Issues in WLANs -- 11.3 IEEE 802.11e WLAN MAC Quality of Service Enhancements -- 11.4 802.11e EDCA -- 11.5 HCF Controlled Channel Access (HCCA)/Wi-Fi Multimedia-Scheduled Access (WMM-SA) -- 11.6 Capacity and Quality of Service -- 11.7 Access Control and Load Balancing -- 11.8 Vendor Proprietary Voice QoS Techniques -- 11.9 SpectraLink Voice Priority (SVP) -- 11.10 Meru Networks: Air Traffic Control -- 11.11 WLAN Handoffs -- 11.12 WLAN Voice Security Exposure -- 11.13 Authentication/Toll Fraud -- 11.14 E911 Compliance: WLAN Station Location -- 11.15 Battery Life -- 11.16 Conclusion -- CHAPTER 12: Fixed-Mobile Convergence: WLAN/Cellular Integration -- 12.1 Customer Motivation -- 12.2 Fixed-Mobile Convergence Options -- 12.3 Cellular Technology -- 12.4 Cellular Network Configuration -- 12.5 Network Controlled Convergence -- 12.6 Cell Phone Signaling Interconnect -- 12.7 Fixed-Mobile Convergence in the US: T-Mobile's HotSpot@Home -- 12.8 Cellular Service as an Alternative to VoWi-Fi -- 12.9 Improving Indoor Coverage: Distributed Antenna Systems, Microcells, and Femtocells -- 12.10 PBX-Controlled Convergence Solutions -- 12.11 PBX-Controlled Options: Manual Handoff -- 12.12 PBX-Controlled Solutions: Automatic Handoff.

12.13 WiMAX Broadband Wireless Access -- 12.14 WiMAX Deployment Plans -- 12.15 WiMAX Technology -- 12.16 Other WiMAX Radio Link Features -- 12.17 MAC Protocol/Quality of Service (QoS) -- 12.18 Conclusion -- CHAPTER 13: Designing a Wireless LAN for Voice -- 13.1 Designing Wireless LANs -- 13.2 Basic Planning Steps in a VoWLAN Deployment -- 13.3 RF Design and Mapping Tools -- 13.4 Infrastructure Design: RF Site Survey -- 13.5 Access Point Issues: Range/Capacity Guidelines -- 13.6 Conclusion -- CHAPTER 14: Network Management in Wireless LANs -- 14.1 Network Management -- 14.2 Record Keeping and Administration -- 14.3 Performance Monitoring -- 14.4 Capacity Planning -- 14.5 Troubleshooting/Problem Isolation -- 14.6 Security Monitoring -- 14.7 Conclusion -- APPENDIX: The IEEE 802.11 Standards -- Glossary of Acronyms -- Glossary of Terms -- Index.