The 3G IP Multimedia Subsystem (IMS) (PDF)

Third edition of this best-selling guide to IMS: fully revised,
and updated with brand new material

The IMS (IP Multimedia Subsystem) is the technology that merges
the Internet with the cellular world. It makes Internet
technologies such as the web, email, instant messaging, presence,
and videoconferencing available nearly everywhere at any time.

The third edition of this bestselling book is fully updated and
provides comprehensively expanded content, including new chapters
on emergency calls and on Voice Call Continuity (VCC). As well as
this, The 3G IP Multimedia Subsystem (IMS) presents updated
material including a comprehensive picture of Session Initiation
Protocol (SIP) as well as its applicability to IMS. As most of the
protocols have been designed in the IETF, this book explains how
the IETF developed these protocols and describes how these
protocols are used in the IMS architecture.

This is an indispensable guide for engineers, programmers,
business managers, marketing representatives and technically aware
users who want to understand how the IMS works and explore the
business model behind it.

* New chapters on emergency calls, Voice Call Continuity (VCC),
service configuration (XCAP, XDM), and conferencing

* Fully updated throughout, including Policy and Charging Control
(PCC), QoS, Presence, Instant Messaging, Multimedia Telephony
Services, and Push-to-talk over Cellular (PoC)

* Describes the IP Multimedia Subsystem from two different
perspectives: from the IETF perspective, and from the 3GPP
perspective.

* Provides details on the latest policy technology and security
architecture

* Written by experienced professionals in the field.