LEADER 05420nam 2200697 a 450 001 9910451399603321 005 20200520144314.0 010 $a1-281-11240-2 010 $a9786611112400 010 $a0-08-055643-4 035 $a(CKB)1000000000411396 035 $a(EBL)328606 035 $a(OCoLC)437197030 035 $a(SSID)ssj0000268315 035 $a(PQKBManifestationID)11235998 035 $a(PQKBTitleCode)TC0000268315 035 $a(PQKBWorkID)10235310 035 $a(PQKB)10212995 035 $a(MiAaPQ)EBC328606 035 $a(CaSebORM)9780080556437 035 $a(PPN)170242811 035 $a(Au-PeEL)EBL328606 035 $a(CaPaEBR)ebr10204227 035 $a(CaONFJC)MIL111240 035 $a(EXLCZ)991000000000411396 100 $a20070917d2008 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aVoice over WLANs$b[electronic resource] $ethe complete guide /$fMichael F. Finneran 205 $a1st edition 210 $aAmsterdam ;$aBoston $cElsevier/Newnes$dc2008 215 $a1 online resource (424 p.) 225 1 $aCommunications engineering series 300 $aIncludes index. 311 $a0-7506-8299-X 320 $aIncludes bibliographical references and index. 327 $aFront 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 327 $aCHAPTER 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 327 $a3.6 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 327 $a4.12 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) 327 $a5.8 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 327 $a6.1 Security Requirements: Authentication, Privacy, and Availability 330 $aFor networking and RF/wireless engineers, and graduate students who want a solid overview of voice over WLANs/VoIP technology (wireless local area networks / voice over internet protocol), this book covers voice coding, packet loss, delay and 'jitter', and 'echo' control, and shows how to combine both WLAN and VoIP technology to create effective voice over WLAN systems. Finneran also describes how to integrate voice over WLAN systems with cellular networks. This is not just another WLAN-only book nor a VoIP-only book; instead, it integrates both topics into a coherent whole.* 410 0$aCommunications engineering series. 606 $aWireless LANs 606 $aInternet telephony 608 $aElectronic books. 615 0$aWireless LANs. 615 0$aInternet telephony. 676 $a004.6/8 700 $aFinneran$b Michael F$0977135 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910451399603321 996 $aVoice over WLANs$92225916 997 $aUNINA