Voice over WLANs the complete guide
For networking and RF/wireless engineers, and graduate students who want a solid overview of voice over WLANs/VoIP technology (wireless local area networks / voice over internet protocol), this book covers voice coding, packet loss, delay and 'jitter', and 'echo' control, and sh...
| Autor principal: | |
|---|---|
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Amsterdam ; Boston :
Elsevier/Newnes
c2008.
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| Edición: | 1st edition |
| Colección: | Communications engineering series.
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| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009627509606719 |
Tabla de Contenidos:
- 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 Fundamentals2.1 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 Repeaters3.7 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 Links5.9 802.11 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
