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Biblioteca

MARC Lista (tabellare)
Ultra-dense networks for 5G and beyond : modelling, analysis, and applications / / edited by Trung Q. Duong, Xiaoli Chu, Himal A. Suraweera
Ultra-dense networks for 5G and beyond : modelling, analysis, and applications / / edited by Trung Q. Duong, Xiaoli Chu, Himal A. Suraweera
Edizione [1st edition]
Pubbl/distr/stampa Hoboken, New Jersey : , : Wiley, , 2019
Descrizione fisica 1 online resource (312 pages) : illustrations
Disciplina 621.385
Soggetto topico Digital telephone systems
ISBN 1-119-47372-1
1-119-47371-3
9781119473756
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto Fundamental limits of ultra-dense networks / Marios Kountouris and Van Minh Nguyen -- Performance analysis of dense small cell networks with LoS and NLoS transmissions under Rician fading / Amir H. Jafari, Ming Ding, and David López-Pérez -- Mean field games for 5G ultra-dense networks : A resource management perspective / Mbazingwa E. Mkiramweni, Chungang Yang, and Zhu Han -- Inband full-duplex self-backhauling in ultra-dense networks / Dani Korpi, Taneli Riihonen and Mikko Valkama -- The role of massive MIMO and small cells in ultra-dense networks / Qi Zhang, Howard H. Yang and Tony Q. S. Quek -- Security for cell-free massive MIMO networks / Tiep M. Hoang, Hien Quoc Ngo, Trung Q. Duong and Hoang D. Tuan -- Massive MIMO for high-performance ultra-dense networks in the unlicensed spectrum / Adrian Garcia-Rodriguez, Giovanni Geraci, Lorenzo Galati-Giordano and David López-Pérez -- Energy efficiency optimization for dense networks / Quang-Doanh Vu, Markku Juntti, Een-Kee Hong and Le-Nam Tran -- Big data methods for ultra-dense network deployment / Weisi Guo, Maria Liakata, Guillem Mosquera, Weijie Qi, Jie Deng and Jie Zhang -- Physical layer security for ultra-dense networks under unreliable backhaul connection / Huy T. Nguyen, Nam-Phong Nguyen, Trung Q. Duong and Won-Joo Hwang -- Simultaneous wireless information and power transfer in UDNs with caching architecture / Sumit Gautam, Thang X. Vu, Symeon Chatzinotas and Björn Ottersten -- Cooperative video streaming in ultra-dense networks with D2D caching / Nguyen-Son Vo and Trung Q. Duong.
Record Nr. UNINA-9910793319203321
Hoboken, New Jersey : , : Wiley, , 2019
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
Ultra-dense networks for 5G and beyond : modelling, analysis, and applications / / edited by Trung Q. Duong, Xiaoli Chu, Himal A. Suraweera
Ultra-dense networks for 5G and beyond : modelling, analysis, and applications / / edited by Trung Q. Duong, Xiaoli Chu, Himal A. Suraweera
Edizione [1st edition]
Pubbl/distr/stampa Hoboken, New Jersey : , : Wiley, , 2019
Descrizione fisica 1 online resource (312 pages) : illustrations
Disciplina 621.385
Soggetto topico Digital telephone systems
ISBN 1-119-47372-1
1-119-47371-3
9781119473756
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto Fundamental limits of ultra-dense networks / Marios Kountouris and Van Minh Nguyen -- Performance analysis of dense small cell networks with LoS and NLoS transmissions under Rician fading / Amir H. Jafari, Ming Ding, and David López-Pérez -- Mean field games for 5G ultra-dense networks : A resource management perspective / Mbazingwa E. Mkiramweni, Chungang Yang, and Zhu Han -- Inband full-duplex self-backhauling in ultra-dense networks / Dani Korpi, Taneli Riihonen and Mikko Valkama -- The role of massive MIMO and small cells in ultra-dense networks / Qi Zhang, Howard H. Yang and Tony Q. S. Quek -- Security for cell-free massive MIMO networks / Tiep M. Hoang, Hien Quoc Ngo, Trung Q. Duong and Hoang D. Tuan -- Massive MIMO for high-performance ultra-dense networks in the unlicensed spectrum / Adrian Garcia-Rodriguez, Giovanni Geraci, Lorenzo Galati-Giordano and David López-Pérez -- Energy efficiency optimization for dense networks / Quang-Doanh Vu, Markku Juntti, Een-Kee Hong and Le-Nam Tran -- Big data methods for ultra-dense network deployment / Weisi Guo, Maria Liakata, Guillem Mosquera, Weijie Qi, Jie Deng and Jie Zhang -- Physical layer security for ultra-dense networks under unreliable backhaul connection / Huy T. Nguyen, Nam-Phong Nguyen, Trung Q. Duong and Won-Joo Hwang -- Simultaneous wireless information and power transfer in UDNs with caching architecture / Sumit Gautam, Thang X. Vu, Symeon Chatzinotas and Björn Ottersten -- Cooperative video streaming in ultra-dense networks with D2D caching / Nguyen-Son Vo and Trung Q. Duong.
Record Nr. UNINA-9910810202103321
Hoboken, New Jersey : , : Wiley, , 2019
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
Voice over packet networks
Voice over packet networks
Autore Wright David <1947->
Pubbl/distr/stampa [Place of publication not identified], : John Wiley & Sons Incorporated, 2001
Descrizione fisica 1 online resource (257 pages)
Disciplina 621.385
Collana Wiley Series on Communications Networking and Distributed Systems
Soggetto topico Electrical & Computer Engineering
Engineering & Applied Sciences
Telecommunications
ISBN 9786610555925
0-470-85862-1
1-280-55592-0
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Record Nr. UNINA-9910142531503321
Wright David <1947->  
[Place of publication not identified], : John Wiley & Sons Incorporated, 2001
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
VoIP and unified communications : internet telephony and the future voice network / / William A. Flanagan
VoIP and unified communications : internet telephony and the future voice network / / William A. Flanagan
Autore Flanagan William A.
Edizione [1st edition]
Pubbl/distr/stampa Hoboken, New Jersey : , : Wiley, , c2012
Descrizione fisica 1 online resource (316 p.)
Disciplina 004.695
621.385
Soggetto topico Internet telephony
Multimedia communications
ISBN 1-280-59175-7
9786613621580
1-118-16603-5
1-118-16604-3
1-118-16601-9
Classificazione TEC041000
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto -- Preface xiii -- Acknowledgments xv -- 1 IP Technology Disrupts Voice Telephony 1 -- 1.1 Introduction to the Public Switched Telephone Network 1 -- 1.2 The Digital PSTN 2 -- 1.3 The Packet Revolution in Telephony 8 -- 1.3.1 Summary of Packet Switching 9 -- 1.3.2 Link Capacity: TDM versus Packets 11 -- 1.3.3 VoIP and “The Cloud” 13 -- IN SHORT: Reading Network Drawings 14 -- 2 Traditional Telephones Still Set Expectations 17 -- 2.1 Availability: How the Bell System Ensured Service 18 -- 2.2 Call Completion 19 -- 2.3 Sound Quality: Encoding for Recognizable Voices 20 -- 2.4 Low Latency 23 -- 2.5 Call Setup Delays 24 -- 2.6 Impairments Controlled: Echo, Singing, Distortion, Noise 25 -- 3 From Circuits to Packets 27 -- 3.1 Data and Signaling Preceded Voice 27 -- 3.1.1 X.25 Packet Data Service 27 -- 3.1.2 SS7: PSTN Signaling on Packets 28 -- 3.1.3 ISDN 29 -- 3.2 Putting Voice into Packets 30 -- 3.2.1 Voice Encoding 31 -- 3.2.2 Dicing and Splicing Voice Streams 32 -- 3.2.3 The Latency Budget 33 -- 4 Packet Transmission and Switching 37 -- 4.1 The Physical Layer: Transmission 39 -- IN SHORT: The Endian Wars 40 -- 4.2 Data Link Protocols 41 -- 4.3 IP, the Network Protocol 43 -- 4.4 Layer 4 Transport Protocols 47 -- 4.4.1 Transmission Control Protocol 47 -- 4.4.2 User Datagram Protocol 50 -- 4.4.3 Stream Control Transmission Protocol 51 -- 4.5 Higher Layer Processes 54 -- 4.5.1 RTP 54 -- 4.5.2 RTCP 57 -- 4.5.3 Multiplexing RTP and RTCP on One UDP Port 58 -- 4.5.4 RTP Mixers and Translators 59 -- 4.5.5 Layered Encoding 60 -- 4.5.6 Profiles for Audio and Video Conferences 60 -- 4.5.7 Security via Encryption 61 -- IN SHORT: Public Key Infrastructure (PKI) 62 -- 4.6 Saving Bandwidth 64 -- 4.6.1 Voice Compression 64 -- 4.6.2 Header Compression 66 -- 4.6.3 Silence Suppression, VAD 67 -- 4.6.4 Sub-Packet Multiplexing 69 -- 4.6.5 Protocol and Codec Selection 70 -- 4.7 Differences: Circuit versus Packet Switched 71 -- 4.7.1 Power to the Desktop Phone 71 -- 4.7.2 Phone as Computer and Computer as Phone 72.
4.7.3 Length of a Phone Line 72 -- 4.7.4 Scaling to Large Size 75 -- 4.7.5 Software Ownership and Licenses 75 -- 5 VoIP Signaling and Call Processing 77 -- 5.1 What Packet Voice and UC Systems Share 78 -- 5.2 Session Initiation Protocol (SIP) 80 -- 5.2.1 SIP Architecture 81 -- 5.2.2 SIP Messages 88 -- 5.2.3 SIP Header Fields and Behaviors 94 -- 5.3 Session Description Protocol 101 -- IN SHORT: ABNF 104 -- 5.4 Media Gateway Control Protocol 107 -- 5.4.1 MGW Functions 107 -- 5.4.2 MGW Connection Model 110 -- 5.4.3 Megaco Procedures 112 -- 5.4.4 Megaco Details 115 -- 5.4.5 Signaling Conversion 119 -- 5.4.6 Voice Transcoding 119 -- 5.5 H.323 120 -- 5.5.1 H.323 Architecture 121 -- 5.5.2 Gatekeeper 123 -- 5.5.3 Gateway 126 -- 5.5.4 Terminal 126 -- 5.5.5 Multipoint Control Unit 127 -- 5.5.6 Call Procedures 128 -- 5.6 Directory Services 134 -- 5.6.1 Domain Name Service (DNS) 134 -- 5.6.2 ENUM 135 -- 6 VoIP and Unified Communications Define the Future 139 -- 6.1 Voice as Before, with Additions 139 -- 6.2 Legacy Services to Keep and Improve with VoIP 140 -- 6.2.1 Flexible Call Routing and 800 Numbers 141 -- 6.2.2 Call on Hold 141 -- 6.2.3 Call Transfer 142 -- 6.2.4 Call Forwarding 142 -- 6.2.5 Audio Conferencing 142 -- 6.2.6 Video Conferencing 143 -- 6.2.7 Local Number Portability 144 -- 6.2.8 Direct Inward Dialing, Dialed Number Indication 144 -- 6.2.9 CallMessage Waiting 145 -- 6.2.10 Call Recording 146 -- 6.2.11 Emergency Calling (E911) 146 -- 6.2.12 Tracking IP Phone Locations for E911 150 -- 6.3 Facsimile Transmission 153 -- 6.3.1 Facsimile on the PSTN 153 -- 6.3.2 Real-Time Fax over IP: Fax Relay or T.38 155 -- 6.3.3 Store-and-Forward Fax Handling 160 -- 6.3.4 IP Faxing over the PSTN 161 -- 6.4 Phone Features Added with VoIPUC 162 -- 6.4.1 Presence 163 -- 6.4.2 Forking 163 -- 6.4.3 Voicemail1/4eMail 163 -- 6.4.4 SMS Integration 164 -- 6.4.5 Instant Messaging 165 -- 6.4.6 Webinar Broadcasts 168 -- 6.4.7 Telepresence 168 -- 6.4.8 More UC Features to Consider 168 -- 7 How VoIP and UC Impact the Network 171.
7.1 Space, Power, and Cooling 171 -- 7.2 Priority for Voice, Video, Fax Packets 172 -- 7.3 Packets per Second 174 -- 7.4 Bandwidth 174 -- 7.5 Security Issues 175 -- 7.5.1 Eavesdropping and vLAN Hopping 176 -- 7.5.2 Access Controls for Users and Connections 176 -- 7.5.3 Modems 177 -- 7.5.4 DNS Cache Poisoning 177 -- IN SHORT: Earliest Instance of DNS Cache Poisoning 179 -- 7.5.5 Toll Fraud 179 -- 7.5.6 Pay-per-Call Scams 179 -- 7.5.7 Vishing 180 -- 7.5.8 SIP ScanningSPIT 180 -- 7.5.9 Opening the Firewall to Incoming Voice 181 -- 7.6 First Migration Steps While Keeping Legacy Equipment 181 -- 7.6.1 Circuit-Switched PBX 182 -- 7.6.2 Digital Phones 182 -- 7.6.3 Analog Phones and FX Service 183 -- 7.6.4 Facsimile Machines 184 -- 7.6.5 Modems 185 -- 8 Interconnections to Global Services 187 -- 8.1 Media Gateways 188 -- 8.2 SIP Trunking 192 -- 8.3 Operating VoIP Across Network Address Translation 196 -- 8.3.1 Failures of SIP, SDP (Signaling) 199 -- 8.3.2 Failures of RTP (Media) 199 -- 8.3.3 Solutions 200 -- 8.3.4 STUN: Session Traversal Utilities for NAT 201 -- 8.3.5 TURN: Traversal Using Relays around NAT 204 -- 8.3.6 ICE: Interactive Connectivity Establishment 206 -- 8.4 Session Border Controller 207 -- 8.4.1 Enterprise SBC 209 -- 8.4.2 Carrier SBC 210 -- 8.5 Supporting Multiple-Carrier Connections 212 -- 8.6 Mobility and Wireless Access 213 -- 8.6.1 VoIP on Wireless LANsWi-Fi 213 -- 8.6.2 Integration of Wi-Fi and Cellular Services 214 -- 8.6.3 Packet Voice on Mobile Broadband: WiMAX, LTE 214 -- 8.6.4 Radio over VoIP 215 -- IN SHORT: E&M Voice Signaling 216 -- 9 Network Management for VoIP and UC 217 -- 9.1 Starting Right 218 -- 9.1.1 Acceptance Testing 219 -- 9.1.2 Configuration Management and Governance 220 -- 9.1.3 Privilege Setting 220 -- 9.2 Continuous Monitoring and Management 221 -- 9.2.1 NMS Software 222 -- 9.2.2 Simple Network Management Protocol 223 -- 9.2.3 Web Interface 224 -- 9.2.4 Server Logging 224 -- 9.2.5 Software Maintenance 225 -- 9.2.6 Quality of ServiceExperience Monitoring 225.
9.2.7 Validate Adjustments and Optimization 226 -- 9.3 Troubleshooting and Repair 226 -- 9.3.1 Methods 226 -- 9.3.2 Software Tools 228 -- 9.3.3 Test Instruments 229 -- 10 Cost Analysis and Payback Calculation 231 -- 11 Examples of Hardware and Software 237 -- 11.1 IP Phones 237 -- 11.2 Gateways 240 -- 11.3 Session Border Controllers 242 -- 11.4 Call-Switching Servers 244 -- 11.4.1 IP PBX 246 -- 11.4.2 Conference BridgesControllers 248 -- 11.4.3 Call Recorder 250 -- 11.5 Hosted VoIPUC Service 251 -- 11.6 Management SystemsWorkstations 252 -- 12 Appendixes 253 -- 12.1 Acronyms and Definitions 253 -- 12.2 Reference Documents 268 -- 12.2.1 RFCs 268 -- 12.2.2 ITU Recommendations 272 -- 12.2.3 Other Sources 272 -- 12.3 Message and Error Codes 274 -- Index 277.
Record Nr. UNINA-9910141343203321
Flanagan William A.  
Hoboken, New Jersey : , : Wiley, , c2012
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
VoIP and unified communications : internet telephony and the future voice network / / William A. Flanagan
VoIP and unified communications : internet telephony and the future voice network / / William A. Flanagan
Autore Flanagan William A.
Edizione [1st edition]
Pubbl/distr/stampa Hoboken, New Jersey : , : Wiley, , c2012
Descrizione fisica 1 online resource (316 p.)
Disciplina 004.695
621.385
Soggetto topico Internet telephony
Multimedia communications
ISBN 1-280-59175-7
9786613621580
1-118-16603-5
1-118-16604-3
1-118-16601-9
Classificazione TEC041000
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto -- Preface xiii -- Acknowledgments xv -- 1 IP Technology Disrupts Voice Telephony 1 -- 1.1 Introduction to the Public Switched Telephone Network 1 -- 1.2 The Digital PSTN 2 -- 1.3 The Packet Revolution in Telephony 8 -- 1.3.1 Summary of Packet Switching 9 -- 1.3.2 Link Capacity: TDM versus Packets 11 -- 1.3.3 VoIP and “The Cloud” 13 -- IN SHORT: Reading Network Drawings 14 -- 2 Traditional Telephones Still Set Expectations 17 -- 2.1 Availability: How the Bell System Ensured Service 18 -- 2.2 Call Completion 19 -- 2.3 Sound Quality: Encoding for Recognizable Voices 20 -- 2.4 Low Latency 23 -- 2.5 Call Setup Delays 24 -- 2.6 Impairments Controlled: Echo, Singing, Distortion, Noise 25 -- 3 From Circuits to Packets 27 -- 3.1 Data and Signaling Preceded Voice 27 -- 3.1.1 X.25 Packet Data Service 27 -- 3.1.2 SS7: PSTN Signaling on Packets 28 -- 3.1.3 ISDN 29 -- 3.2 Putting Voice into Packets 30 -- 3.2.1 Voice Encoding 31 -- 3.2.2 Dicing and Splicing Voice Streams 32 -- 3.2.3 The Latency Budget 33 -- 4 Packet Transmission and Switching 37 -- 4.1 The Physical Layer: Transmission 39 -- IN SHORT: The Endian Wars 40 -- 4.2 Data Link Protocols 41 -- 4.3 IP, the Network Protocol 43 -- 4.4 Layer 4 Transport Protocols 47 -- 4.4.1 Transmission Control Protocol 47 -- 4.4.2 User Datagram Protocol 50 -- 4.4.3 Stream Control Transmission Protocol 51 -- 4.5 Higher Layer Processes 54 -- 4.5.1 RTP 54 -- 4.5.2 RTCP 57 -- 4.5.3 Multiplexing RTP and RTCP on One UDP Port 58 -- 4.5.4 RTP Mixers and Translators 59 -- 4.5.5 Layered Encoding 60 -- 4.5.6 Profiles for Audio and Video Conferences 60 -- 4.5.7 Security via Encryption 61 -- IN SHORT: Public Key Infrastructure (PKI) 62 -- 4.6 Saving Bandwidth 64 -- 4.6.1 Voice Compression 64 -- 4.6.2 Header Compression 66 -- 4.6.3 Silence Suppression, VAD 67 -- 4.6.4 Sub-Packet Multiplexing 69 -- 4.6.5 Protocol and Codec Selection 70 -- 4.7 Differences: Circuit versus Packet Switched 71 -- 4.7.1 Power to the Desktop Phone 71 -- 4.7.2 Phone as Computer and Computer as Phone 72.
4.7.3 Length of a Phone Line 72 -- 4.7.4 Scaling to Large Size 75 -- 4.7.5 Software Ownership and Licenses 75 -- 5 VoIP Signaling and Call Processing 77 -- 5.1 What Packet Voice and UC Systems Share 78 -- 5.2 Session Initiation Protocol (SIP) 80 -- 5.2.1 SIP Architecture 81 -- 5.2.2 SIP Messages 88 -- 5.2.3 SIP Header Fields and Behaviors 94 -- 5.3 Session Description Protocol 101 -- IN SHORT: ABNF 104 -- 5.4 Media Gateway Control Protocol 107 -- 5.4.1 MGW Functions 107 -- 5.4.2 MGW Connection Model 110 -- 5.4.3 Megaco Procedures 112 -- 5.4.4 Megaco Details 115 -- 5.4.5 Signaling Conversion 119 -- 5.4.6 Voice Transcoding 119 -- 5.5 H.323 120 -- 5.5.1 H.323 Architecture 121 -- 5.5.2 Gatekeeper 123 -- 5.5.3 Gateway 126 -- 5.5.4 Terminal 126 -- 5.5.5 Multipoint Control Unit 127 -- 5.5.6 Call Procedures 128 -- 5.6 Directory Services 134 -- 5.6.1 Domain Name Service (DNS) 134 -- 5.6.2 ENUM 135 -- 6 VoIP and Unified Communications Define the Future 139 -- 6.1 Voice as Before, with Additions 139 -- 6.2 Legacy Services to Keep and Improve with VoIP 140 -- 6.2.1 Flexible Call Routing and 800 Numbers 141 -- 6.2.2 Call on Hold 141 -- 6.2.3 Call Transfer 142 -- 6.2.4 Call Forwarding 142 -- 6.2.5 Audio Conferencing 142 -- 6.2.6 Video Conferencing 143 -- 6.2.7 Local Number Portability 144 -- 6.2.8 Direct Inward Dialing, Dialed Number Indication 144 -- 6.2.9 CallMessage Waiting 145 -- 6.2.10 Call Recording 146 -- 6.2.11 Emergency Calling (E911) 146 -- 6.2.12 Tracking IP Phone Locations for E911 150 -- 6.3 Facsimile Transmission 153 -- 6.3.1 Facsimile on the PSTN 153 -- 6.3.2 Real-Time Fax over IP: Fax Relay or T.38 155 -- 6.3.3 Store-and-Forward Fax Handling 160 -- 6.3.4 IP Faxing over the PSTN 161 -- 6.4 Phone Features Added with VoIPUC 162 -- 6.4.1 Presence 163 -- 6.4.2 Forking 163 -- 6.4.3 Voicemail1/4eMail 163 -- 6.4.4 SMS Integration 164 -- 6.4.5 Instant Messaging 165 -- 6.4.6 Webinar Broadcasts 168 -- 6.4.7 Telepresence 168 -- 6.4.8 More UC Features to Consider 168 -- 7 How VoIP and UC Impact the Network 171.
7.1 Space, Power, and Cooling 171 -- 7.2 Priority for Voice, Video, Fax Packets 172 -- 7.3 Packets per Second 174 -- 7.4 Bandwidth 174 -- 7.5 Security Issues 175 -- 7.5.1 Eavesdropping and vLAN Hopping 176 -- 7.5.2 Access Controls for Users and Connections 176 -- 7.5.3 Modems 177 -- 7.5.4 DNS Cache Poisoning 177 -- IN SHORT: Earliest Instance of DNS Cache Poisoning 179 -- 7.5.5 Toll Fraud 179 -- 7.5.6 Pay-per-Call Scams 179 -- 7.5.7 Vishing 180 -- 7.5.8 SIP ScanningSPIT 180 -- 7.5.9 Opening the Firewall to Incoming Voice 181 -- 7.6 First Migration Steps While Keeping Legacy Equipment 181 -- 7.6.1 Circuit-Switched PBX 182 -- 7.6.2 Digital Phones 182 -- 7.6.3 Analog Phones and FX Service 183 -- 7.6.4 Facsimile Machines 184 -- 7.6.5 Modems 185 -- 8 Interconnections to Global Services 187 -- 8.1 Media Gateways 188 -- 8.2 SIP Trunking 192 -- 8.3 Operating VoIP Across Network Address Translation 196 -- 8.3.1 Failures of SIP, SDP (Signaling) 199 -- 8.3.2 Failures of RTP (Media) 199 -- 8.3.3 Solutions 200 -- 8.3.4 STUN: Session Traversal Utilities for NAT 201 -- 8.3.5 TURN: Traversal Using Relays around NAT 204 -- 8.3.6 ICE: Interactive Connectivity Establishment 206 -- 8.4 Session Border Controller 207 -- 8.4.1 Enterprise SBC 209 -- 8.4.2 Carrier SBC 210 -- 8.5 Supporting Multiple-Carrier Connections 212 -- 8.6 Mobility and Wireless Access 213 -- 8.6.1 VoIP on Wireless LANsWi-Fi 213 -- 8.6.2 Integration of Wi-Fi and Cellular Services 214 -- 8.6.3 Packet Voice on Mobile Broadband: WiMAX, LTE 214 -- 8.6.4 Radio over VoIP 215 -- IN SHORT: E&M Voice Signaling 216 -- 9 Network Management for VoIP and UC 217 -- 9.1 Starting Right 218 -- 9.1.1 Acceptance Testing 219 -- 9.1.2 Configuration Management and Governance 220 -- 9.1.3 Privilege Setting 220 -- 9.2 Continuous Monitoring and Management 221 -- 9.2.1 NMS Software 222 -- 9.2.2 Simple Network Management Protocol 223 -- 9.2.3 Web Interface 224 -- 9.2.4 Server Logging 224 -- 9.2.5 Software Maintenance 225 -- 9.2.6 Quality of ServiceExperience Monitoring 225.
9.2.7 Validate Adjustments and Optimization 226 -- 9.3 Troubleshooting and Repair 226 -- 9.3.1 Methods 226 -- 9.3.2 Software Tools 228 -- 9.3.3 Test Instruments 229 -- 10 Cost Analysis and Payback Calculation 231 -- 11 Examples of Hardware and Software 237 -- 11.1 IP Phones 237 -- 11.2 Gateways 240 -- 11.3 Session Border Controllers 242 -- 11.4 Call-Switching Servers 244 -- 11.4.1 IP PBX 246 -- 11.4.2 Conference BridgesControllers 248 -- 11.4.3 Call Recorder 250 -- 11.5 Hosted VoIPUC Service 251 -- 11.6 Management SystemsWorkstations 252 -- 12 Appendixes 253 -- 12.1 Acronyms and Definitions 253 -- 12.2 Reference Documents 268 -- 12.2.1 RFCs 268 -- 12.2.2 ITU Recommendations 272 -- 12.2.3 Other Sources 272 -- 12.3 Message and Error Codes 274 -- Index 277.
Record Nr. UNINA-9910825080303321
Flanagan William A.  
Hoboken, New Jersey : , : Wiley, , c2012
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
VoIP Technology: Applications and Challenges / / by Tamal Chakraborty, Iti Saha Misra, Ramjee Prasad
VoIP Technology: Applications and Challenges / / by Tamal Chakraborty, Iti Saha Misra, Ramjee Prasad
Autore Chakraborty Tamal
Edizione [1st ed. 2019.]
Pubbl/distr/stampa Cham : , : Springer International Publishing : , : Imprint : Springer, , 2019
Descrizione fisica 1 online resource (XXXVI, 239 p. 140 illus., 89 illus. in color.)
Disciplina 621.385
Collana Springer Series in Wireless Technology
Soggetto topico Electrical engineering
Computer organization
Computers
Wireless communication systems
Mobile communication systems
Communications Engineering, Networks
Computer Systems Organization and Communication Networks
Information Systems and Communication Service
Wireless and Mobile Communication
ISBN 3-319-95594-2
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto Overview of VoIP Technology -- VoIP Protocol Fundamentals -- Quality of Service Management - Design Issues -- VoIP Over Wireless LANs - Prospects and Challenges -- Technique For Improving VoIP Performance Over Wireless LANs -- Optimizing VoIP in WLANs Using State-Space Search -- Optimization of Codec Parameters To Reduce Packet Loss Over WLAN -- QOS Enhancement using an adaptive jitter buffer algorithm with variable window size -- Adaptive Packetization Algorithm to support VoIP over Congested WLANS -- VoIP over Emerging Networks: Case Study with Cognitive Radio Networks.
Record Nr. UNINA-9910337649403321
Chakraborty Tamal  
Cham : , : Springer International Publishing : , : Imprint : Springer, , 2019
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
VoIP voice and fax signal processing [[electronic resource] /] / Sivannarayana Nagireddi
VoIP voice and fax signal processing [[electronic resource] /] / Sivannarayana Nagireddi
Autore Sivannarayana Nagireddi
Pubbl/distr/stampa Hoboken, N.J., : Wiley, 2008
Descrizione fisica 1 online resource (592 p.)
Disciplina 621.385
Soggetto topico Internet telephony
Facsimile transmission
Signal processing - Digital techniques
Soggetto genere / forma Electronic books.
ISBN 1-281-76671-2
9786611766719
0-470-37787-9
0-470-37786-0
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto VoIP VOICE AND FAX SIGNAL PROCESSING; CONTENTS; Acknowledgments; About the Author; Preface; Glossary; 1 PSTN Basic Infrastructure, Interfaces, and Signals; 1.1 PSTN CO and DLC; 1.1.1 Analog CO; 1.1.2 Digital CO and DLC; 1.2 PSTN User Interfaces; 1.2.1 FXS and FXO Analog Interfaces; 1.2.2 SLAC, CODEC and codec-Clarifications on Naming Conventions; 1.2.3 TIP-RING, Off-Hook, On-Hook, and POTS Clarifications; 1.2.4 ISDN Interface; 1.2.5 T1/E1 Family Digital Interface; 1.3 Data Services on Telephone Lines; 1.3.1 DSL Basics; 1.4 Power Levels and Digital Quantization for G.711 μ/A-Law
1.4.1 μ-Law Power Levels and Quantization1.4.2 A-Law Power Levels and Quantization; 1.5 Significance of Power Levels on Listening; 1.6 TR-57, IEEE-743, and TIA Standards Overview; 1.6.1 TR-57 Transmission Tests; 1.6.2 IEEE STD-743-Based Tests; 1.6.3 Summary on Association of TR-57, IEEE, and TIA Standards; 2 VoIP Overview and Infrastructure; 2.1 PSTN and VoIP; 2.1.1 CPE and Naming Clarifications of VoIP Systems in this Book; 2.1.2 VoIP End-User Call Combinations; 2.2 Typical VoIP Deployment Example; 2.3 Network and Acoustic Interfaces for VoIP; 2.4 VoIP Systems Working Principles
2.4.1 VoIP Adapter2.4.2 Voice Flow in the VoIP Adapter; 2.4.3 Voice and Fax Software on VoIP Adapter; 2.4.4 Residential Gateway; 2.4.5 Residential Gateway Example; 2.4.6 IP Phones; 2.4.7 Wireless LAN-Based IP Phone; 2.4.8 VoIP Soft Phones on PC; 2.4.9 VoIP-to-PSTN Gateway; 2.4.10 IP PBX Adapter; 2.4.11 Hosting Long-Distance VoIP through PSTN; 2.4.12 Subscribed VoIP Services; 2.5 VoIP Signaling; 2.5.1 VoIP-H.323 Overview; 2.5.2 VoIP-MGCP Overview; 2.5.3 SIP Signaling; 2.5.4 SIP Call Flow; 3 Voice Compression; 3.1 Compression Codecs; 3.2 G.711 Compression
3.2.1 μ-Law Compression of Analog Signal3.2.2 PCMU for Digitized Signals; 3.2.3 PCMU Quantization Effects; 3.2.4 A-Law Compression for Analog Signals; 3.2.5 PCMA for Digitized Signals; 3.2.6 PCMA Quantization Effects; 3.2.7 Power Levels in PCMU/PCMA and SNR; 3.3 Speech Redundancies and Compression; 3.4 G.726 or ADPCM Compression; 3.4.1 G.726 Encoder and Decoder; 3.5 Wideband Voice; 3.5.1 G.722 Codec; 3.6 G.729 Family of Low-Bit-Rate Codecs; 3.6.1 G.729 Codec; 3.7 Miscellaneous Narrow and Wideband Codecs; 3.7.1 Narrowband Codecs; 3.7.2 Wideband Codecs; 3.8 Codecs and Overload Levels
3.9 Voice Quality of Codecs3.9.1 Discussion on Wideband codec Voice Quality; 3.10 C-Source Code for Codecs; 3.11 Codecs in VoIP Deployment; 4 Generic VAD/CNG for Waveform codecs; 4.1 VAD/CNG and Codecs; 4.2 Generic VAD/CNG Functionality; 4.3 Comfort Noise Payload Format; 4.4 G.711 Appendix II VAD/CNG Algorithm; 4.4.1 DTX Conditions; 4.4.2 CNG Algorithm; 4.5 Power-Based VAD/CNG; 4.5.1 Signal-Level Mapping Differences; 4.6 VAD/CNG in Low-Bit-Rate Codecs; 4.7 Miscellaneous Aspects of VAD/CNG; 4.7.1 RTP Packetization of VAD/CNG Packets; 4.7.2 VAD Duplicate Packets; 4.7.3 VAD/CNG Interoperability
4.7.4 Network Bandwidth Saving
Record Nr. UNINA-9910144134003321
Sivannarayana Nagireddi  
Hoboken, N.J., : Wiley, 2008
Materiale a stampa
Lo trovi qui: Univ. Federico II
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VoIP voice and fax signal processing [[electronic resource] /] / Sivannarayana Nagireddi
VoIP voice and fax signal processing [[electronic resource] /] / Sivannarayana Nagireddi
Autore Sivannarayana Nagireddi
Pubbl/distr/stampa Hoboken, N.J., : Wiley, 2008
Descrizione fisica 1 online resource (592 p.)
Disciplina 621.385
Soggetto topico Internet telephony
Facsimile transmission
Signal processing - Digital techniques
ISBN 1-281-76671-2
9786611766719
0-470-37787-9
0-470-37786-0
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto VoIP VOICE AND FAX SIGNAL PROCESSING; CONTENTS; Acknowledgments; About the Author; Preface; Glossary; 1 PSTN Basic Infrastructure, Interfaces, and Signals; 1.1 PSTN CO and DLC; 1.1.1 Analog CO; 1.1.2 Digital CO and DLC; 1.2 PSTN User Interfaces; 1.2.1 FXS and FXO Analog Interfaces; 1.2.2 SLAC, CODEC and codec-Clarifications on Naming Conventions; 1.2.3 TIP-RING, Off-Hook, On-Hook, and POTS Clarifications; 1.2.4 ISDN Interface; 1.2.5 T1/E1 Family Digital Interface; 1.3 Data Services on Telephone Lines; 1.3.1 DSL Basics; 1.4 Power Levels and Digital Quantization for G.711 μ/A-Law
1.4.1 μ-Law Power Levels and Quantization1.4.2 A-Law Power Levels and Quantization; 1.5 Significance of Power Levels on Listening; 1.6 TR-57, IEEE-743, and TIA Standards Overview; 1.6.1 TR-57 Transmission Tests; 1.6.2 IEEE STD-743-Based Tests; 1.6.3 Summary on Association of TR-57, IEEE, and TIA Standards; 2 VoIP Overview and Infrastructure; 2.1 PSTN and VoIP; 2.1.1 CPE and Naming Clarifications of VoIP Systems in this Book; 2.1.2 VoIP End-User Call Combinations; 2.2 Typical VoIP Deployment Example; 2.3 Network and Acoustic Interfaces for VoIP; 2.4 VoIP Systems Working Principles
2.4.1 VoIP Adapter2.4.2 Voice Flow in the VoIP Adapter; 2.4.3 Voice and Fax Software on VoIP Adapter; 2.4.4 Residential Gateway; 2.4.5 Residential Gateway Example; 2.4.6 IP Phones; 2.4.7 Wireless LAN-Based IP Phone; 2.4.8 VoIP Soft Phones on PC; 2.4.9 VoIP-to-PSTN Gateway; 2.4.10 IP PBX Adapter; 2.4.11 Hosting Long-Distance VoIP through PSTN; 2.4.12 Subscribed VoIP Services; 2.5 VoIP Signaling; 2.5.1 VoIP-H.323 Overview; 2.5.2 VoIP-MGCP Overview; 2.5.3 SIP Signaling; 2.5.4 SIP Call Flow; 3 Voice Compression; 3.1 Compression Codecs; 3.2 G.711 Compression
3.2.1 μ-Law Compression of Analog Signal3.2.2 PCMU for Digitized Signals; 3.2.3 PCMU Quantization Effects; 3.2.4 A-Law Compression for Analog Signals; 3.2.5 PCMA for Digitized Signals; 3.2.6 PCMA Quantization Effects; 3.2.7 Power Levels in PCMU/PCMA and SNR; 3.3 Speech Redundancies and Compression; 3.4 G.726 or ADPCM Compression; 3.4.1 G.726 Encoder and Decoder; 3.5 Wideband Voice; 3.5.1 G.722 Codec; 3.6 G.729 Family of Low-Bit-Rate Codecs; 3.6.1 G.729 Codec; 3.7 Miscellaneous Narrow and Wideband Codecs; 3.7.1 Narrowband Codecs; 3.7.2 Wideband Codecs; 3.8 Codecs and Overload Levels
3.9 Voice Quality of Codecs3.9.1 Discussion on Wideband codec Voice Quality; 3.10 C-Source Code for Codecs; 3.11 Codecs in VoIP Deployment; 4 Generic VAD/CNG for Waveform codecs; 4.1 VAD/CNG and Codecs; 4.2 Generic VAD/CNG Functionality; 4.3 Comfort Noise Payload Format; 4.4 G.711 Appendix II VAD/CNG Algorithm; 4.4.1 DTX Conditions; 4.4.2 CNG Algorithm; 4.5 Power-Based VAD/CNG; 4.5.1 Signal-Level Mapping Differences; 4.6 VAD/CNG in Low-Bit-Rate Codecs; 4.7 Miscellaneous Aspects of VAD/CNG; 4.7.1 RTP Packetization of VAD/CNG Packets; 4.7.2 VAD Duplicate Packets; 4.7.3 VAD/CNG Interoperability
4.7.4 Network Bandwidth Saving
Record Nr. UNINA-9910830909903321
Sivannarayana Nagireddi  
Hoboken, N.J., : Wiley, 2008
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui
Wireless Systems and Mobility in Next Generation Internet [[electronic resource] ] : 4th International Workshop of the EuroNGI/EuroFGI Network of Excellence Barcelona, Spain, January 16-18, 2008. Revised Selected Papers / / edited by Llorenç Cerdà-Alabern
Wireless Systems and Mobility in Next Generation Internet [[electronic resource] ] : 4th International Workshop of the EuroNGI/EuroFGI Network of Excellence Barcelona, Spain, January 16-18, 2008. Revised Selected Papers / / edited by Llorenç Cerdà-Alabern
Edizione [1st ed. 2008.]
Pubbl/distr/stampa Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2008
Descrizione fisica 1 online resource (VIII, 221 p.)
Disciplina 621.385
Collana Computer Communication Networks and Telecommunications
Soggetto topico Computer communication systems
Application software
Information storage and retrieval
Computer Communication Networks
Information Systems Applications (incl. Internet)
Information Storage and Retrieval
ISBN 3-540-89183-8
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto Sensor Networks -- Performance Evaluation of DTSN in Wireless Sensor Networks -- Diffusion Approximation Model for the Distribution of Packet Travel Time at Sensor Networks -- Minimizing Interference in TDMA MAC Protocols for WSN Operating in Shadow-Fading Channels -- Secure and Efficient Data Collection in Sensor Networks -- Image Recognition Traffic Patterns for Wireless Multimedia Sensor Networks -- Mesh Networks -- Notes on Implementing a IEEE 802.11s Mesh Point -- Interference-Aware Channel Assignment in Wireless Mesh Networks -- Performance Evaluation of a Dynamic Medium Access Control Scheme for Mobile Ad-Hoc Networks -- Teletraffic Performance Analysis of Multi-class OFDM-TDMA Systems with AMC -- Mobile Ad-Hoc Networks -- Reducing Problems in Providing Internet Connectivity for Mobile Ad Hoc Networks -- Connectivity Gateway Discovery in MANETs -- Efficiency of Search Methods in Dynamic Wireless Networks -- Evaluation of a Cooperative ARQ Protocol for Delay-Tolerant Vehicular Networks -- Cellular Networks -- A Seamless Vertical Handover Approach -- Location Management Based on the Mobility Patterns of Mobile Users -- Performance Evaluation of Overlay-Based Range Queries in Mobile Systems.
Record Nr. UNISA-996465416503316
Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2008
Materiale a stampa
Lo trovi qui: Univ. di Salerno
Opac: Controlla la disponibilità qui
Wireless Systems and Mobility in Next Generation Internet : 4th International Workshop of the EuroNGI/EuroFGI Network of Excellence Barcelona, Spain, January 16-18, 2008. Revised Selected Papers / / edited by Llorenç Cerdà-Alabern
Wireless Systems and Mobility in Next Generation Internet : 4th International Workshop of the EuroNGI/EuroFGI Network of Excellence Barcelona, Spain, January 16-18, 2008. Revised Selected Papers / / edited by Llorenç Cerdà-Alabern
Edizione [1st ed. 2008.]
Pubbl/distr/stampa Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2008
Descrizione fisica 1 online resource (VIII, 221 p.)
Disciplina 621.385
Collana Computer Communication Networks and Telecommunications
Soggetto topico Computer communication systems
Application software
Information storage and retrieval
Computer Communication Networks
Information Systems Applications (incl. Internet)
Information Storage and Retrieval
ISBN 3-540-89183-8
Formato Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione eng
Nota di contenuto Sensor Networks -- Performance Evaluation of DTSN in Wireless Sensor Networks -- Diffusion Approximation Model for the Distribution of Packet Travel Time at Sensor Networks -- Minimizing Interference in TDMA MAC Protocols for WSN Operating in Shadow-Fading Channels -- Secure and Efficient Data Collection in Sensor Networks -- Image Recognition Traffic Patterns for Wireless Multimedia Sensor Networks -- Mesh Networks -- Notes on Implementing a IEEE 802.11s Mesh Point -- Interference-Aware Channel Assignment in Wireless Mesh Networks -- Performance Evaluation of a Dynamic Medium Access Control Scheme for Mobile Ad-Hoc Networks -- Teletraffic Performance Analysis of Multi-class OFDM-TDMA Systems with AMC -- Mobile Ad-Hoc Networks -- Reducing Problems in Providing Internet Connectivity for Mobile Ad Hoc Networks -- Connectivity Gateway Discovery in MANETs -- Efficiency of Search Methods in Dynamic Wireless Networks -- Evaluation of a Cooperative ARQ Protocol for Delay-Tolerant Vehicular Networks -- Cellular Networks -- A Seamless Vertical Handover Approach -- Location Management Based on the Mobility Patterns of Mobile Users -- Performance Evaluation of Overlay-Based Range Queries in Mobile Systems.
Record Nr. UNINA-9910146564303321
Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 2008
Materiale a stampa
Lo trovi qui: Univ. Federico II
Opac: Controlla la disponibilità qui