The IMS (PDF)

The 3rd edition of this highly successful text builds on
the achievement of the first two editions to provide comprehensive
coverage of IMS. It continues to explore the concepts,
architecture, protocols and functionalities of IMS while providing
a wealth of new and updated information. It is written in a manner
that allows readers to choose the level of knowledge and
understanding they need to gain about the IMS.

With 35% new material, The IMS,IP Multimedia Concepts and
Services, 3rd Edition has been completely revised to
include updated chapters as well as totally new chapters on IMS
multimedia telephony and IMS voice call continuity. Additional new
material includes IMS transit, IMS local numbering, emergency
sessions, identification of communication services in IMS, new
authentication model for fixed access, NAT traversal and globally
routable user agents URI. Detailed descriptions of protocol
behaviour are provided on a level that can be used for
implementation and testing.

Key features of the 3rd edition:

* Two new chapters on IMS multimedia telephony service and IMS
Voice Call Continuity

* Updated information on Third Generation Partnership Project
(3GPP) Release 7 level, including architecture, reference points
and concepts

* Substantially extended coverage on IMS detailed procedures

* Completely rewritten and extended chapters on IMS
services