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VoIP : wireless, P2P and New Enterprise Voice Over IP / / Samrat Ganguly, Sudeept Bhatnagar
VoIP : wireless, P2P and New Enterprise Voice Over IP / / Samrat Ganguly, Sudeept Bhatnagar
Autore Ganguly Samrat
Pubbl/distr/stampa Chichester, England ; , : Wiley, , c2008
Descrizione fisica 1 online resource (278 p.)
Disciplina 004.69/5
Altri autori (Persone) BhatnagarSudeept
Soggetto topico Internet telephony
ISBN 1-282-35018-8
9786612350184
0-470-99792-3
0-470-99791-5
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto -- Preface xvii -- PART I PRELIMINARIES -- 1 Introduction to VoIP Networks 3 -- 1.1 Public Switched Telephone Network (PSTN) 3 -- 1.2 Fundamentals of Internet technology 7 -- 1.3 Performance issues in the Internet 11 -- 1.4 Quality of Service (QoS) guarantees 12 -- 1.5 Summary 15 -- 2 Basics of VoIP 17 -- 2.1 Packetization of voice 17 -- 2.2 Networking technology 18 -- 2.3 Architecture overview 18 -- 2.4 Process of making a VoIP call 22 -- 2.5 Deployment issues 23 -- 2.6 VoIP applications and services 26 -- 2.7 Summary 27 -- 3 VoIP Codecs 29 -- 3.1 Codec design overview 29 -- 3.2 Speech coding techniques 31 -- 3.3 Narrowband codecs 34 -- 3.4 Wideband and multirate codecs 36 -- 3.5 VoIP softwares 37 -- 3.6 Summary 38 -- 4 Performance of Voice Codecs 41 -- 4.1 Factors affecting VoIP quality 41 -- 4.2 Voice quality assessment 43 -- 4.3 Subjective measures and MOS score 44 -- 4.4 Conversational opinion score 45 -- 4.5 E-Model 46 -- 4.6 Sensitivity to loss 48 -- 4.7 Perceptual Evaluation of Speech Quality (PESQ) 50 -- 4.8 Tools for lab testbed setup 53 -- 4.9 Voice input/output tools 55 -- 4.10 Summary 57 -- 5 VoIP Protocols 59 -- 5.1 Introduction 59 -- 5.2 Signaling protocols 61 -- 5.3 Media transport protocols 70 -- 5.4 Summary 71 -- PART II VOIP IN OVERLAY NETWORKS -- 6 Overlay Networks 75 -- 6.1 Internet communication overview 75 -- 6.2 Limitations of the Internet 77 -- 6.3 Overlay networks 78 -- 6.4 Applications of overlay networks 82 -- 6.5 Summary 86 -- 7 P2P Technology 87 -- 7.1 P2P communication overview 87 -- 7.2 Classification of P2P networks 89 -- 7.3 Unstructured overlays 90 -- 7.4 Structured overlays / Distributed Hash Tables (DHTs) 92 -- 7.5 Types of DHT 96 -- 7.6 Semi-structured overlays 100 -- 7.7 Keyword search using DHT 101 -- 7.8 Summary 102 -- 8 VoIP over Infrastructure Overlays 103 -- 8.1 Introduction 104 -- 8.2 VoIP over overlay / generic architecture 104 -- 8.3 Methods to enhance VoIP quality 105 -- 8.4 Estimating network quality 110 -- 8.5 Route computation 114.
8.6 Perceived enhancement of VoIP quality 115 -- 8.7 Summary 116 -- 9 VoIP over P2P 119 -- 9.1 VoIP over P2P overlay / generic architecture 119 -- 9.2 VoIP issues in P2P overlay 120 -- 9.3 Case study: Skype 122 -- 9.4 Standardization 130 -- 9.5 Summary 130 -- PART III VOIP IN WIRELESS NETWORKS -- 10 IEEE 802.11 Wireless Networks 135 -- 10.1 Network architecture overview 135 -- 10.2 Network access management 137 -- 10.3 Basic medium access protocol 139 -- 10.4 Physical layer 142 -- 10.5 Network resource management 144 -- 10.6 IEEE 802.11 standardization overview 147 -- 10.7 Summary 148 -- 11 Voice over IEEE 802.11 Wireless Networks 149 -- 11.1 VoIP overWLAN performance problems 149 -- 11.2 VoIP capacity 151 -- 11.3 VoIP packet prioritization 155 -- 11.4 Handoff performance 157 -- 11.5 Reliable delivery 160 -- 11.6 Client power management 161 -- 11.7 Issues in mesh networks 161 -- 11.8 Summary 163 -- 12 IEEE 802.16 WiMAX 165 -- 12.1 WiMAX overview 165 -- 12.2 IEEE 802.11 MAC protocol architecture 166 -- 12.3 MAC layer framing 168 -- 12.4 Physical layer 170 -- 12.5 Radio resource management 174 -- 12.6 Competing technologies 175 -- 12.7 Summary 176 -- 13 Voice over WiMAX 177 -- 13.1 Introduction 177 -- 13.2 VoIP service delivery overWiMAX network 178 -- 13.3 QoS architecture 179 -- 13.4 Call admission control 181 -- 13.5 Uplink QoS control 181 -- 13.6 Enhanced QoS control for VoIP 182 -- 13.7 MAC enhancement strategies 185 -- 13.8 Comparison with competing technologies 187 -- 13.9 Summary 187 -- PART IV VOIP IN ENTERPRISE NETWORKS -- 14 Private Branch Exchange (PBX) 191 -- 14.1 Private Branch Exchange (PBX) 191 -- 14.2 Case study: Asterisk open-source IP-PBX 195 -- 14.3 Summary 206 -- 15 Network Address Translation (NAT) and Firewall 207 -- 15.1 Introduction 208 -- 15.2 NAT fundamentals 208 -- 15.3 Applications of NAT 210 -- 15.4 Types of NAT 212 -- 15.5 Firewall 214 -- 15.6 NAT traversal solutions 214 -- 15.7 NAT traversal in H.323 219 -- 15.8 Summary 220 -- PART V VOIP SERVICE DEPLOYMENT.
16 Supporting Services and Applications 223 -- 16.1 Domain Name System (DNS) 223 -- 16.2 ENUM 225 -- 16.3 Network monitoring 225 -- 16.4 Direct Inward Dialing (DID) 226 -- 16.5 Emergency calling (911) 226 -- 16.6 Fax 227 -- 16.7 Summary 228 -- 17 Security and Privacy 231 -- 17.1 Security and privacy issues 232 -- 17.2 Generic issues 232 -- 17.3 VoIP-related issues 234 -- 17.4 Solutions 236 -- 17.5 Recommendations 239 -- 17.6 Summary 240 -- 18 IP Multimedia Subsystem (IMS) 241 -- 18.1 Introduction 241 -- 18.2 Architecture design goals 242 -- 18.3 IMS advantages 243 -- 18.4 IMS architecture organization 244 -- 18.5 Network Attachment SubSystem (NASS) 246 -- 18.6 Resource Admission Control Subsystem (RACS) 247 -- 18.7 IMS core subsystem 247 -- 18.8 IMS QoS management 249 -- 18.9 QoS provisioning approach 249 -- 18.10 Summary 251 -- Index 253.
Record Nr. UNINA-9910144521603321
Ganguly Samrat  
Chichester, England ; , : Wiley, , c2008
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
VoIP : wireless, P2P and New Enterprise Voice Over IP / / Samrat Ganguly, Sudeept Bhatnagar
VoIP : wireless, P2P and New Enterprise Voice Over IP / / Samrat Ganguly, Sudeept Bhatnagar
Autore Ganguly Samrat
Edizione [1st ed.]
Pubbl/distr/stampa Chichester, England ; ; Hoboken, NJ, : Wiley, c2008
Descrizione fisica 1 online resource (278 p.)
Disciplina 004.69/5
Altri autori (Persone) BhatnagarSudeept
Soggetto topico Internet telephony
ISBN 9786612350184
9781282350182
1282350188
9780470997925
0470997923
9780470997918
0470997915
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto -- Preface xvii -- PART I PRELIMINARIES -- 1 Introduction to VoIP Networks 3 -- 1.1 Public Switched Telephone Network (PSTN) 3 -- 1.2 Fundamentals of Internet technology 7 -- 1.3 Performance issues in the Internet 11 -- 1.4 Quality of Service (QoS) guarantees 12 -- 1.5 Summary 15 -- 2 Basics of VoIP 17 -- 2.1 Packetization of voice 17 -- 2.2 Networking technology 18 -- 2.3 Architecture overview 18 -- 2.4 Process of making a VoIP call 22 -- 2.5 Deployment issues 23 -- 2.6 VoIP applications and services 26 -- 2.7 Summary 27 -- 3 VoIP Codecs 29 -- 3.1 Codec design overview 29 -- 3.2 Speech coding techniques 31 -- 3.3 Narrowband codecs 34 -- 3.4 Wideband and multirate codecs 36 -- 3.5 VoIP softwares 37 -- 3.6 Summary 38 -- 4 Performance of Voice Codecs 41 -- 4.1 Factors affecting VoIP quality 41 -- 4.2 Voice quality assessment 43 -- 4.3 Subjective measures and MOS score 44 -- 4.4 Conversational opinion score 45 -- 4.5 E-Model 46 -- 4.6 Sensitivity to loss 48 -- 4.7 Perceptual Evaluation of Speech Quality (PESQ) 50 -- 4.8 Tools for lab testbed setup 53 -- 4.9 Voice input/output tools 55 -- 4.10 Summary 57 -- 5 VoIP Protocols 59 -- 5.1 Introduction 59 -- 5.2 Signaling protocols 61 -- 5.3 Media transport protocols 70 -- 5.4 Summary 71 -- PART II VOIP IN OVERLAY NETWORKS -- 6 Overlay Networks 75 -- 6.1 Internet communication overview 75 -- 6.2 Limitations of the Internet 77 -- 6.3 Overlay networks 78 -- 6.4 Applications of overlay networks 82 -- 6.5 Summary 86 -- 7 P2P Technology 87 -- 7.1 P2P communication overview 87 -- 7.2 Classification of P2P networks 89 -- 7.3 Unstructured overlays 90 -- 7.4 Structured overlays / Distributed Hash Tables (DHTs) 92 -- 7.5 Types of DHT 96 -- 7.6 Semi-structured overlays 100 -- 7.7 Keyword search using DHT 101 -- 7.8 Summary 102 -- 8 VoIP over Infrastructure Overlays 103 -- 8.1 Introduction 104 -- 8.2 VoIP over overlay / generic architecture 104 -- 8.3 Methods to enhance VoIP quality 105 -- 8.4 Estimating network quality 110 -- 8.5 Route computation 114.
8.6 Perceived enhancement of VoIP quality 115 -- 8.7 Summary 116 -- 9 VoIP over P2P 119 -- 9.1 VoIP over P2P overlay / generic architecture 119 -- 9.2 VoIP issues in P2P overlay 120 -- 9.3 Case study: Skype 122 -- 9.4 Standardization 130 -- 9.5 Summary 130 -- PART III VOIP IN WIRELESS NETWORKS -- 10 IEEE 802.11 Wireless Networks 135 -- 10.1 Network architecture overview 135 -- 10.2 Network access management 137 -- 10.3 Basic medium access protocol 139 -- 10.4 Physical layer 142 -- 10.5 Network resource management 144 -- 10.6 IEEE 802.11 standardization overview 147 -- 10.7 Summary 148 -- 11 Voice over IEEE 802.11 Wireless Networks 149 -- 11.1 VoIP overWLAN performance problems 149 -- 11.2 VoIP capacity 151 -- 11.3 VoIP packet prioritization 155 -- 11.4 Handoff performance 157 -- 11.5 Reliable delivery 160 -- 11.6 Client power management 161 -- 11.7 Issues in mesh networks 161 -- 11.8 Summary 163 -- 12 IEEE 802.16 WiMAX 165 -- 12.1 WiMAX overview 165 -- 12.2 IEEE 802.11 MAC protocol architecture 166 -- 12.3 MAC layer framing 168 -- 12.4 Physical layer 170 -- 12.5 Radio resource management 174 -- 12.6 Competing technologies 175 -- 12.7 Summary 176 -- 13 Voice over WiMAX 177 -- 13.1 Introduction 177 -- 13.2 VoIP service delivery overWiMAX network 178 -- 13.3 QoS architecture 179 -- 13.4 Call admission control 181 -- 13.5 Uplink QoS control 181 -- 13.6 Enhanced QoS control for VoIP 182 -- 13.7 MAC enhancement strategies 185 -- 13.8 Comparison with competing technologies 187 -- 13.9 Summary 187 -- PART IV VOIP IN ENTERPRISE NETWORKS -- 14 Private Branch Exchange (PBX) 191 -- 14.1 Private Branch Exchange (PBX) 191 -- 14.2 Case study: Asterisk open-source IP-PBX 195 -- 14.3 Summary 206 -- 15 Network Address Translation (NAT) and Firewall 207 -- 15.1 Introduction 208 -- 15.2 NAT fundamentals 208 -- 15.3 Applications of NAT 210 -- 15.4 Types of NAT 212 -- 15.5 Firewall 214 -- 15.6 NAT traversal solutions 214 -- 15.7 NAT traversal in H.323 219 -- 15.8 Summary 220 -- PART V VOIP SERVICE DEPLOYMENT.
16 Supporting Services and Applications 223 -- 16.1 Domain Name System (DNS) 223 -- 16.2 ENUM 225 -- 16.3 Network monitoring 225 -- 16.4 Direct Inward Dialing (DID) 226 -- 16.5 Emergency calling (911) 226 -- 16.6 Fax 227 -- 16.7 Summary 228 -- 17 Security and Privacy 231 -- 17.1 Security and privacy issues 232 -- 17.2 Generic issues 232 -- 17.3 VoIP-related issues 234 -- 17.4 Solutions 236 -- 17.5 Recommendations 239 -- 17.6 Summary 240 -- 18 IP Multimedia Subsystem (IMS) 241 -- 18.1 Introduction 241 -- 18.2 Architecture design goals 242 -- 18.3 IMS advantages 243 -- 18.4 IMS architecture organization 244 -- 18.5 Network Attachment SubSystem (NASS) 246 -- 18.6 Resource Admission Control Subsystem (RACS) 247 -- 18.7 IMS core subsystem 247 -- 18.8 IMS QoS management 249 -- 18.9 QoS provisioning approach 249 -- 18.10 Summary 251 -- Index 253.
Record Nr. UNINA-9910827880403321
Ganguly Samrat  
Chichester, England ; ; Hoboken, NJ, : Wiley, c2008
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui