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Handbook on Networked Multipoint Multimedia Conferencing and Multistream Immsersive Telepresence using SIP: Scalable Distributed Applications and Media Control over Internet is the first book to put together all IETF request for comments (RFCs), and the internet drafts standards related to the multipoint conferencing and immersive telepresence.
This book includes mandatory and optional texts of all standards in a chronological and systematic way almost with one-to-one integrity from the beginning to end, allowing the reader to understand all aspects of the highly complex real-time applications.
It is a book that network designers, software developers, product manufacturers, implementers, interoperability testers, professionals, professors, and researchers will find to be immensely useful. Practitioners and engineers in all spectrums who are concentrating on building the real-time, scalable, interoperable multipoint applications, can use this book to make informed choices based on technical standards in the market place, on all proprietary non-scalable and non-interposable products. This book will provide focus and foundation for these decision makers.
Contents
Contents
Preface...........................................................................................................................................xxxi
Author...........................................................................................................................................xxxv
Chapter 1 Scalable Networked Multipoint Multimedia Conferencing and Telepresence..............1
1.1 Networked Multipoint Multimedia Conferencing..............................................1
1.2 Basic Conferencing Protocol Architecture.........................................................4
1.3 Third-Party Multiparty Conferencing.............................................................. 12
1.4 Multistream Immersive Telepresence...............................................................23
1.5 Scalable Centralized Multipoint Multimedia Conferencing Systems
and Protocols Framework.................................................................................24
1.6 Terminology.....................................................................................................28
1.7 Summary..........................................................................................................28
1.8 Problems........................................................................................................... 41
References................................................................................................................... 42
Chapter 2 Centralized Conferencing System Architecture......................................................... 43
2.1 Introduction...................................................................................................... 43
2.2 Convention........................................................................................................ 43
2.3 Terminology..................................................................................................... 43
2.4 Overview..........................................................................................................44
2.5 Centralized Conferencing Data........................................................................ 45
2.6 Centralized Conferencing Constructs and Identifiers...................................... 47
2.7 Conferencing System Realization....................................................................50
2.8 Conferencing Mechanisms............................................................................... 55
2.9 Conference Scenario Realizations....................................................................56
2.10 Relationships between SIP and Centralized Conferencing System
Frameworks......................................................................................................69
2.11 Security Considerations....................................................................................69
2.12 Summary.......................................................................................................... 71
2.13 Problems........................................................................................................... 72
Chapter 3 Media Server Control Architecture............................................................................. 73
3.1 Introduction...................................................................................................... 73
3.2 Terminology..................................................................................................... 75
3.3 Architecture Overview..................................................................................... 75
3.4 NSIP Usage.......................................................................................................77
3.5 Media Control for IVR Services...................................................................... 78
3.6 Media Control for Conferencing Services........................................................80
3.7 Security Considerations....................................................................................85
3.8 Summary..........................................................................................................86
3.9 Problems...........................................................................................................87
Chapter 4 Conferencing Information Data Model for Centralized Conferencing.......................89
4.1 Introduction......................................................................................................89
4.2 Terminology.....................................................................................................89
4.3 Overview..........................................................................................................89
Comparison.......................................................................... 91
4.4 Data Model Definition......................................................................................92
4.5 RELAX NG Schema...................................................................................... 103
4.6 XML Schema Extensibility............................................................................ 103
4.7 XML Example................................................................................................ 103
4.8 Non-Normative RELAX NG Schema in XML Syntax (Appendix A of
RFC 6501)....................................................................................................... 103
4.9 Relax Schema in XML Syntax (Appendix B of RFC 6501).......................... 103
4.10 Security Considerations.................................................................................. 104
4.11 Summary........................................................................................................ 108
4.12 Problems......................................................................................................... 109
References................................................................................................................. 111
Chapter 5 Centralized Conferencing Manipulation Protocol.................................................... 129
5.1 Introduction.................................................................................................... 129
5.2 Conventions and Terminology........................................................................ 129
5.3 XCON Conference Control System Architecture.......................................... 129
5.4 Protocol Overview.......................................................................................... 131
5.5 CCMP Messages............................................................................................ 134
5.6 Example of CCMP in Action......................................................................... 153
5.7 Locating a Conference Server........................................................................ 162
5.8 Managing Notifications.................................................................................. 163
5.9 HTTP Transport............................................................................................. 165
5.10 Security Considerations.................................................................................. 166
5.11 XML Schema................................................................................................. 168
5.12 IANA Considerations..................................................................................... 169
5.13 Summary........................................................................................................ 176
5.14 Evaluation of Other Protocol Models and Transports Considered for
CCMP (Appendix A of RFC 6503)................................................................ 176
5.15 Problems......................................................................................................... 178
References................................................................................................................. 179
Chapter 6 Binary Floor Control Protocol.................................................................................. 181
6.1 Introduction.................................................................................................... 181
6.2 Terminology................................................................................................... 181
6.3 Scope.............................................................................................................. 181
6.4 Overview of Operation................................................................................... 183
6.5 Packet Format................................................................................................. 186
6.6 Transport........................................................................................................200
6.7 Lower-Layer Security..................................................................................... 201
6.8 Protocol Transactions..................................................................................... 201
6.9 Authentication and Authorization..................................................................202
6.10 Floor Participant Operations..........................................................................202
6.11 Chair Operations............................................................................................205
6.12.1 Requesting Information about Floors...............................................206
6.13 Floor Control Server Operations....................................................................208
6.14 Security Considerations.................................................................................. 214
6.15 BFCP Connection Establishment................................................................... 215
6.16 IANA Considerations..................................................................................... 218
6.17 Summary........................................................................................................ 221
6.18 Problems.........................................................................................................222
Chapter 7 XCON Notification Service.......................................................................................225
7.1 Introduction....................................................................................................225
7.2 Terminology...................................................................................................225
7.3 Notification Formats.......................................................................................225
7.4 Full Notifications............................................................................................225
7.5 Partial Notifications........................................................................................227
7.6 IANA Considerations.....................................................................................229
7.7 Security Considerations..................................................................................229
7.7.1 Connection Security..........................................................................230
7.7.2 Authorization Considerations ...........................................................230
7.8 Summary........................................................................................................230
7.9 Problems......................................................................................................... 231
Reference................................................................................................................... 231
Chapter 8 Media Channel Control Framework.......................................................................... 233
8.1 Introduction.................................................................................................... 233
8.2 CFW Capabilities........................................................................................... 233
8.3 Overview........................................................................................................ 235
8.4 Control Channel Setup................................................................................... 238
8.4.1 Control Client SIP UAC Behavior..................................................... 238
8.4.2 Control Server SIP UAS Behavior.................................................... 239
8.5 Establishing Media Streams - Control Client SIP UAC Behavior.................240
8.6 Control Framework Interactions..................................................................... 241
8.7 Response Code Descriptions.......................................................................... 247
8.8 Control Packages............................................................................................ 247
8.9 Formal Syntax................................................................................................249
8.10 Examples........................................................................................................ 251
8.11 Extensibility....................................................................................................254
8.12 Security Considerations..................................................................................254
8.12.1 Session Establishment.......................................................................254
8.13 IANA Considerations.....................................................................................256
8.14 Common Package Components (Appendix A of RFC 6230).........................256
8.15 Summary........................................................................................................ 257
8.16 Problems......................................................................................................... 257
Chapter 9 Mixer Package for Media Control Channel Framework........................................... 259
9.1 Introduction.................................................................................................... 259
9.2 Conventions and Terminology........................................................................260
9.3 Control Package Definition............................................................................260
9.4 Element Definitions........................................................................................ 262
9.5 Formal Syntax................................................................................................290
9.6 Examples........................................................................................................ 291
9.6.1 AS-MS Framework Interaction Examples........................................ 291
9.6.1.1 Creating a Conference Mixer and Joining a
Participant..........................................................................309
9.6.1.2 Receiving Active Talker Notifications...............................309
9.6.1.3 Conference Termination....................................................309
9.6.2 Mixing Examples.............................................................................. 310
9.6.2.1 Audio Conferencing........................................................... 310
9.6.2.2 Bridging Connections........................................................ 312
xvi Contents
9.6.2.3 Video Conferencing........................................................... 312
9.7 Security Considerations.................................................................................. 313
9.8 IANA Considerations..................................................................................... 315
9.9 Summary........................................................................................................ 315
9.10 Problems......................................................................................................... 315
References................................................................................................................. 316
Chapter 10 Media Session Recording.......................................................................................... 317
10.1 Use Cases and Requirements for SIP-Based Media Recording................... 317
10.2 Media Recording Architecture....................................................................324
10.3 Media Recording Metadata.......................................................................... 331
XML Body.................................................................344
10.3.9 XML Schema Definition for Recording Metadata....................... 345
10.3.10 Security Considerations................................................................348
10.3.11 IANA Considerations...................................................................349
10.4 Media Session Recoding Protocol...............................................................349
10.5 Summary...................................................................................................... 371
10.6 Problems....................................................................................................... 372
References................................................................................................................. 373
Chapter 11 Media Resource Brokering....................................................................................... 375
11.1 Introduction.................................................................................................. 375
11.2 Conventions and Terminology..................................................................... 375
11.3 Problem Discussion...................................................................................... 377
11.4 Deployment Scenario Options..................................................................... 378
11.5 MRB Interface Definitions.......................................................................... 381
11.6 MRB Acting as a B2BUA............................................................................405
11.7 Multimodal MRB Implementations.............................................................405
11.8 Relative Merits of Query Mode, IAMM, and IUMM.................................406
11.9 Examples......................................................................................................407
11.10 Media Service Resource Publisher Interface XML Schema....................... 425
11.11 Media Service Resource Consumer Interface XML Schema......................444
11.12 Security Considerations............................................................................... 461
11.13 IANA Considerations...................................................................................463
11.14 Summary......................................................................................................463
11.15 Problems.......................................................................................................464
References.................................................................................................................465
Chapter 12 Media Control Channel Framework for Interactive Voice Response ....................... 467
12.1 Introduction.................................................................................................. 467
12.2 Conventions and Terminology.....................................................................469
12.3 Control Package Definition..........................................................................469
12.4 Element Definitions...................................................................................... 471
12.5 Formal Syntax.............................................................................................. 511
12.6 Examples...................................................................................................... 534
12.8 IANA Considerations...................................................................................544
12.9 Using VoiceXML as a Dialog Language.....................................................544
12.10 Summary...................................................................................................... 549
12.11 Problems....................................................................................................... 550
Chapter 13 SIP Interface to VoiceXML Media Services............................................................ 551
13.1 Introduction.................................................................................................. 551
13.2 VoiceXML Session Establishment and Termination................................... 553
13.3 Media Support..............................................................................................560
13.4 Returning Data to the Application Server................................................... 563
13.5 Outbound Calling.........................................................................................565
13.6 Call Transfer................................................................................................. 565
13.7 Security Considerations............................................................................... 569
13.8 IANA Considerations...................................................................................569
13.9 Summary......................................................................................................569
13.10 Problems....................................................................................................... 570
References................................................................................................................. 571
Chapter 14 Media Resource Control Protocol Version 2............................................................. 573
14.1 Introduction.................................................................................................. 573
14.2 Conventions.................................................................................................. 574
14.3 Architecture................................................................................................. 575
14.4 MRCPv2 Basics........................................................................................... 576
14.5 MRCPv2 Specification................................................................................. 583
14.5.5 Events........................................................................................... 587
14.6 MRCPv2 Generic Methods, Headers, and Result Structure........................ 588
14.7 Resource Discovery..................................................................................... 597
14.8 Speech Synthesizer Resource...................................................................... 597
14.10 Recorder Resource....................................................................................... 656
14.11 Speaker Verification and Identification........................................................663
14.12 Security Considerations...............................................................................684
14.13 IANA Considerations...................................................................................686
14.14 Examples......................................................................................................686
14.15 ABNF Normative Definition........................................................................697
14.16 XML Schemas.............................................................................................706
14.17 Summary...................................................................................................... 711
14.18 Problems....................................................................................................... 713
References................................................................................................................. 714
Chapter 15 Media Control Channel Framework (CFW) Call Flow Examples........................... 715
15.1 Introduction.................................................................................................. 715
15.2 Conventions.................................................................................................. 715
15.3 Terminology................................................................................................. 716
15.4 A Practical Approach................................................................................... 716
15.4.1 State Diagrams............................................................................. 716
15.5 Control Channel Establishment................................................................... 718
15.6 Use-Case Scenarios and Examples.............................................................. 726
15.7 Media Resource Brokering..........................................................................792
15.8 Security Considerations...............................................................................820
15.9 Summary......................................................................................................827
15.10 Problems.......................................................................................................830
Reference................................................................................................................... 831
Chapter 16 Multistream Immersive Telepresence Conferencing Systems.................................. 833
16.1 Requirements for Telepresence Multistreams.............................................. 833
16.2 Use Cases for Telepresence Multistreams.................................................... 837
16.3 Framework for Telepresence Multistreams.................................................. 845
16.4 XML Schema for the CLUE Data Model....................................................885
16.5 CLUE Protocol............................................................................................. 933
16.6 CLUE Protocol Data Channel.....................................................................966
16.7 Mapping RTP Streams to CLUE Media Captures.......................................980
16.8 Session Signaling for Controlling Multiple Streams for Telepresence
(CLUE)......................................................................................................... 983
16.9 Summary......................................................................................................997
16.10 Problems..................................................................................................... 1001
References...............................................................................................................1002
Appendix....................................................................................................................................... 1005
Index............................................................................................................................................. 1013
