IMS Application Developer's Handbook: Creating and Deploying Innovative IMS Applications

Front Cover......Page 1
IMS Application Developer's Handbook......Page 2
Copyright Page......Page 3
Contents......Page 4
Foreword......Page 12
Preface......Page 14
Acknowledgements......Page 17
About the Authors......Page 18
1.1 Why Was IMS Developed?......Page 20
1.3 Network Vision: Enable and Simplify......Page 21
1.4 IMS Architecture for Those That Don't Need to Know......Page 28
1.5 Setting the Scene: The Story So Far......Page 33
1.6 Doing Useful Work: The Service Story......Page 34
1.8 Multimedia Telephony......Page 40
1.9 Summary......Page 45
2.2 Basic Economic Concepts for Developers......Page 46
2.3 Value Creation and Capture in Modern Communications Industries......Page 52
2.4 The Business Case for IMS......Page 57
2.5 Business Models for a Digital Planet......Page 61
2.6 Toward a Diagramming Technique......Page 63
2.7 Practical Examples – Application to IMS......Page 66
2.8 Conclusions......Page 67
3.1 Introduction......Page 68
3.2 Back to Basics......Page 69
3.4 Server-Side End-Point Application......Page 70
3.5 Web Server-Side End-Point Application......Page 71
3.6 Web Client-Side End-Point Application......Page 73
3.7 Mid-Point Application......Page 74
3.8 Client-Side Application, Building on a Standardized Service......Page 75
3.9 To-Do List......Page 76
3.10 Summary......Page 77
4.1 Introduction......Page 78
4.2 IMS Service Creation......Page 79
4.3 IMS Service Composition......Page 83
4.4 IMS Application Servers......Page 88
4.5 Conclusions......Page 99
CHAPTER 5 Service Development......Page 100
5.1 Virtual Call Center Use-Case......Page 101
5.2 Web-Based Do-Not-Disturb Use-Case......Page 112
5.3 Conclusions......Page 123
6.2 Basics of Voice Over IP......Page 124
6.3 Registration......Page 149
6.4 Locating the Registrar......Page 156
6.5 Registration Relationships......Page 160
6.6 Network Domains......Page 161
7.3 SIP Session Versus Media Session......Page 164
7.4 SIP Transaction Model......Page 166
7.5 SIP Transaction State Models......Page 173
7.6 Proxy Roles......Page 176
7.7 SIP Session Establishment......Page 180
7.8 SIP Transport Considerations......Page 202
7.9 Canceling a SIP Transaction Request......Page 213
7.10 SIP Dialogs......Page 216
7.11 Media Transmission: Offer–Answer Model......Page 228
8.2 Overview of IMS Standards and Releases......Page 242
8.3 IMS Network Architecture – A Global View......Page 243
8.4 IMS Network Architecture – A Closer Look......Page 251
8.5 Registration......Page 268
8.6 Session Establishment......Page 289
8.7 Using Phone Numbers......Page 304
8.8 Application Servers in IMS......Page 311
8.9 Messaging in IMS......Page 343
9.2 A More In-Depth Look into MMTel......Page 348
9.3 Basic MMTel Architecture......Page 349
9.4 Going Deeper and Wider......Page 350
9.5 Adding to MMTel......Page 353
9.6 Use-Case: Calendar-Based Routing......Page 355
9.7 IMS Presence......Page 356
9.8 Finding the right devices......Page 365
9.9 Conclusion......Page 368
10.1 Introduction......Page 370
10.3 Money Makes the App Go Around......Page 371
10.4 The Mechanics of Charging......Page 376
10.5 Summary......Page 381
11.2 The Bigger Picture – Connecting IMS to the Outside World......Page 382
11.3 Interworking Through MGCF and IM-MGW......Page 384
11.4 Video Interworking......Page 397
11.5 Supplementary Service Interworking......Page 399
11.6 Applying Legacy VAS in the IMS Network......Page 408
12.1 Introduction......Page 420
12.2 The Basics of RCS......Page 421
12.3 Overview of RCS Release Functionality......Page 423
12.4 RCS Release 1......Page 424
12.5 RCS Release 2......Page 437
12.6 RCS Release 3......Page 440
12.7 RCS Release 4......Page 441
12.8 RCS-e......Page 442
12.9 Using RCS Applications to Capture Value......Page 444
12.10 Conclusions......Page 449
13.2 Overview of the Evolved IMS Architecture......Page 450
13.3 GSMA VoLTE – IMS Profile for Voice and SMS......Page 451
13.5 Single Radio Voice Call Continuity (SRVCC)......Page 455
13.6 IMS Centralized Services (ICS)......Page 460
13.7 SRVCC and ICS Considerations for Service Designers......Page 464
14.3 Smart Pipes......Page 468
14.8 WAC and Other App Stores......Page 469
14.10 Conclusion......Page 470
References......Page 472
Abbreviations......Page 474
Index......Page 482