Verfügbarkeit: Voice over IP (VoIP) technology

Voice over IP (VoIP) technology:

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Bibliographische Detailangaben
1. Verfasser:	Uhl, Tadeus (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Aachen Shaker 2018
Ausgabe:	[1. Auflage]
Schriftenreihe:	Berichte aus der Telematik
Schlagworte:	Dienstgüte Datensicherung Kommunikationsprotokoll Internettelefonie H.323 QoE QoS SIP VoIP
Online-Zugang:	Inhaltsverzeichnis Inhaltsverzeichnis
Beschreibung:	X, 171 Seiten Illustrationen, Diagramme 23 cm
ISBN:	9783844057850 3844057854

Internformat

MARC


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Datensatz im Suchindex

_version_	1804178452779106304
adam_text	CONTENT 1 INTRODUCTION TO VOIP..........................................................................................1 1.1 HISTORY OF NETWORKS..................................................................................1 1.2 COMPARISON OF VOIP TECHNOLOGY AND PSTN TELEPHONY ...................... 3 1.3 IS VOIP A FORERUNNER OF NGN?................................................................5 2 TYPICAL VOIP ENVIRONMENTS.............................................................................. 9 3 COMPONENTS IN VOIP SYSTEMS..........................................................................13 3.1 CLIENTS/T ERMINALS....................................................................................13 3.2 GATEKEEPER.............................................................................................. 14 3.3 SIP SERVER................................................................................................15 3.4 GATEWAY...................................................................................................18 3.5 MCU........................................................................................................19 3.6 IP-PBX....................................................................................................19 4 COMMUNICATION PROCEDURES IN VOIP CONNECTIONS ........................................ 21 4.1 PROTOCOLS AND THEIR SPECIFICATIONS . ....................................................... 21 4.2 LOGICAL M ODELS......................................................................................22 4.3 COMMUNICATION PROCEDURES IN H.323 .................................................. 23 4.4 COMMUNICATION PROCEDURES IN S IP .......................................................31 4.5 TRANSPORT OF PAYLOAD ............................................................................. 38 4.5.1 AUDIO ENCODING ......................................................................... 38 4.5.2 REAL-TIME TRANSPORT PROTOCOL (RTP) ......................................... 41 4.5.3 REAL-TIME TRANSPORT CONTROL PROTOCOL (RTCP) ........................ 43 5 QUALITY OF SERVICE (QOS) IN VOIP SYSTEMS.....................................................47 5.1 RELEVANT PARAMETERS FOR QOS.................................................................47 5.2 QOS-SUPPORTING TECHNIQUES................................................................. 52 5.2.1 IEEE 802.LP /Q ........................................................................... 54 5.2.2 MULTI PROTOCOL LABEL SWITCHING (MPLS) .................................. 56 5.2.3 DIFFERENTIATED SERVICES (DIFFSERV) ............................................ 59 5.2.4 RESOURCE RESERVATION PROTOCOL (RSVP) ................................... 61 5.3 PROCEDURE FOR THE AUTOMATIC QUALITY EVALUATION..................................64 5.3.1 INTRODUCTION.................................................................................64 5.3.2 MEAN OPINION SCORE (MOS)......................................................67 5.3.3 PERCEPTUAL ANALYSIS MEASUREMENT SYSTEM (PAMS) ................ 69 5.3.4 PERCEPTUAL SPEECH QUALITY MEASURE (PSQM) ........................... 72 5.3.5 PERCEPTUAL EVALUATION OF SPEECH QUALITY (PESQ) ................... 74 5.3.6 PERCEPTUAL OBJECTIVE LISTENING QUALITY ANALYSIS (POLQA) ...77 5.3.7 THE E MODEL................................................................................78 5.3.8 THE E(IP) M ODEL.........................................................................84 5.3.9 REFERENCE SIGNALS FOR VOIP........................................................ 85 6 QUALITY MEASUREMENTS IN VOIP NETWORKS ...................................................... 87 6.1 VOIP ANALYSERS....................................................................................... 88 6.2 VOIP SIMULATORS..................................................................................... 94 7 CROSS-NETWORK V OIP PROTOCOLS.......................................................................101 7.1 PROTOCOL MGCP .................................................................................... 102 7.2 PROTOCOL M EGACO.................................................................................. 107 8 SETTING UP A VOIP NETWORK............................................................................ 113 8.1 SOFT MIGRATION TO V OIP.........................................................................115 8.2 HARD MIGRATION TO VOIP.......................................................................118 8.3 VOIP IN SOHO ..................................................................................... 121 8.4 PROCEDURE FOR MIGRATING TO VOIP ........................................................ 123 8.4.1 PROCEDURE FOR MIGRATING TO V OIP............................................124 8.4.2 TO-BE ANALYSIS (REQUIREMENTS ON THE VOIP SYSTEM)............127 8.4.3 DEVELOPMENT OF THE VOIP SYSTEM CONCEPT ............................ 130 8.4.4 COST-BENEFIT ANALYSIS...............................................................132 8.4.5 CREATING A REQUIREMENT SPECIFICATION.....................................132 8.4.6 ACQUISITION OF SYSTEM COMPONENTS.........................................132 8.4.7 LAUNCH AND TRAINING.................................................................133 8.4.8 STANDARDS AND GUIDELINES ......................................................... 133 9 QUANTIFYING QOS IN A VOIP ENVIRONMENT ..................................................... 135 9.1 NUMERICAL TOOL QOSCALC(VOIP) .......................................................... 135 9.1.1 COMPOSITION AND MODE OF OPERATION.......................................135 9.1.2 EXAMPLES OF APPLICATIONS ........................................................ 138 9.2 COMPARISON OF PESQ & POLQA ....................................................... 142 9.2.1 PESQ AND POLQA IN THE NARROWBAND CASE ......................... 142 9.2.2 PESQ AND POLQA IN THE WIDEBAND CASE ............................. 144 9.3 JITTER-BUFFER AND QOS...........................................................................146 9.3.1 IMPLEMENTATIONS OF JITTER BUFFERS............................................146 9.3.2 ANALYSIS ENVIRONMENT .............................................................. 147 9.3.3 RESULTS AND THEIR INTERPRETATION................................................149 9.3.4 JITTER BUFFER SIZE AND QOS VALUES ............................................ 152 10 SECURITY IN VOIP ............................................................................................. 155 10.1 IP SECURITY PROTOCOL (IPSEC).................................................................155 10.2 TRANSPORT LAYER SECURITY (TLS) .......................................................... 159 10.3 SECURITY BY H .323................................................................................ 162 10.4 SECURITY BY SIP..................................................................................... 163 11 REFERENCES.......................................................................................................165 11.1 BOOKS.....................................................................................................165 11.2 ARTICLES..................................................................................................166 11.3 INTERNET LIN K S........................................................................................ 169
any_adam_object	1
author	Uhl, Tadeus
author_GND	(DE-588)1146990049
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discipline	Informatik Elektrotechnik / Elektronik / Nachrichtentechnik Wirtschaftswissenschaften
edition	[1. Auflage]
format	Book
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spelling	Uhl, Tadeus Verfasser (DE-588)1146990049 aut Voice over IP (VoIP) technology Tadeus Uhl [1. Auflage] Aachen Shaker 2018 X, 171 Seiten Illustrationen, Diagramme 23 cm txt rdacontent n rdamedia nc rdacarrier Berichte aus der Telematik Dienstgüte (DE-588)4496068-2 gnd rswk-swf Datensicherung (DE-588)4011144-1 gnd rswk-swf Kommunikationsprotokoll (DE-588)4128252-8 gnd rswk-swf Internettelefonie (DE-588)4770362-3 gnd rswk-swf H.323 QoE QoS SIP VoIP Internettelefonie (DE-588)4770362-3 s Dienstgüte (DE-588)4496068-2 s Kommunikationsprotokoll (DE-588)4128252-8 s Datensicherung (DE-588)4011144-1 s DE-604 Shaker Verlag (DE-588)1064118135 pbl B:DE-101 application/pdf http://d-nb.info/1151334952/04 Inhaltsverzeichnis DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030292858&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis
spellingShingle	Uhl, Tadeus Voice over IP (VoIP) technology Dienstgüte (DE-588)4496068-2 gnd Datensicherung (DE-588)4011144-1 gnd Kommunikationsprotokoll (DE-588)4128252-8 gnd Internettelefonie (DE-588)4770362-3 gnd
subject_GND	(DE-588)4496068-2 (DE-588)4011144-1 (DE-588)4128252-8 (DE-588)4770362-3
title	Voice over IP (VoIP) technology
title_auth	Voice over IP (VoIP) technology
title_exact_search	Voice over IP (VoIP) technology
title_full	Voice over IP (VoIP) technology Tadeus Uhl
title_fullStr	Voice over IP (VoIP) technology Tadeus Uhl
title_full_unstemmed	Voice over IP (VoIP) technology Tadeus Uhl
title_short	Voice over IP (VoIP) technology
title_sort	voice over ip voip technology
topic	Dienstgüte (DE-588)4496068-2 gnd Datensicherung (DE-588)4011144-1 gnd Kommunikationsprotokoll (DE-588)4128252-8 gnd Internettelefonie (DE-588)4770362-3 gnd
topic_facet	Dienstgüte Datensicherung Kommunikationsprotokoll Internettelefonie
url	http://d-nb.info/1151334952/04 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030292858&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
work_keys_str_mv	AT uhltadeus voiceoveripvoiptechnology AT shakerverlag voiceoveripvoiptechnology

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