Gonzalo Camarillo & Miguel-Angel García-Martín 
The 3G IP Multimedia Subsystem (IMS) 
Merging the Internet and the Cellular Worlds

The 3G IP Multimedia Subsystem (IMS): Merging the Internet and
the Cellular Worlds, Second Edition is an updated version of
the best-selling guide to this exciting technology that will merge
the Internet with the cellular world, ensuring the availability of
Internet technologies such as the web, email, instant messaging,
presence and videoconferencing nearly everywhere. In this
thoroughly revised overview of the IMS and its technologies, goals,
history, vision, the organizations involved in its standardization
and architecture, the authors first describe how each technology
works on the Internet and then explain how the same technology is
adapted to work in the IMS, enabling readers to take advantage of
any current and future Internet service.

Key features of the Second Edition include:

* New chapter on Next Generation Networks, including an overview
on standardization, the architecture, and PSTN/ISDN simulation
services.

* Fully updated chapter on the Push-to-talk over Cellular (Po C)
service, covering the standardization in the Open Mobile Alliance
(OMA), architecture, Po C session types, user plane, and the Talk
Burst Control Protocol.

* Several expanded sections, including discussion of the role of
the Open Mobile Alliance in the standardization process, IPv4
support in IMS, a description of the IMS Application Layer Gateway
and the Transition Gateway, and a description of the presence data
model.

* Updated material on the presence service, session-based instant
messages with the Message Session Relay Protocol (MSRP), and the
XML Configuration Access Protocol (XCAP).

* Supported by a companion website on which instructors and
lecturers can find electronic versions of the figures.

Engineers, programmers, business managers, marketing
representatives, and technically aware users will all find this to
be an indispensable guide to IMS and the business model behind
it.

About the author

Gonzalo Camarillo leads the Advanced Signalling Research
Laboratory of Ericsson in Helsinki, Finland. He is an active
participant in the IETF, where he has authored and coauthored
several specifications used in the IMS. In particular, he is a
co-author of themain SIP specification, RFC 3261. In addition, he
co-chairs the IETF SIPPING working group, which handles the
requirements from 3GPP and 3GPP2 related to SIP, and the IETF HIP
(Host Identity Protocol) working group, which deals with
lower-layer mobility and security. He is the Ericsson
representative in the SIP Forum and is a regular speaker at
different industry conferences. During his stay as a visitor
researcher at Columbia University in New York, USA, he published a
book entitled ‘SIP Demystified’. Gonzalo received an
M.Sc. degree in Electrical Engineering from Universidad Politecnica
de Madrid, Spain, and another M.Sc. degree (also in Electrical
Engineering) from the Royal Institute of Technology in Stockholm,
Sweden. He is currently continuing his studies as a Ph.D. candidate
at Helsinki University of Technology, in Finland.

Miguel A. García-Martín is a Principal Research
Engineer in the Networking Technologies Laboratory of the Nokia
Research Center in Helsinki, Finland. Before joining Nokia Miguel
was working for Ericsson in Spain, and then Ericsson in Finland.
Miguel is an active participant of the IETF, and for a number of
years has been a key contributor in 3GPP. Lately Miguel has also
been participating in the specification of NGN in ETSI. In the
IETF, he has authored and co-authored several specifications
related to the IMS. In 3GPP, he has been a key contributor to the
development of the IMS standard. Miguel is also a regular speaker
at different industry conferences. Miguel received a B. Eng. degree
in Telecommunications Engineering from Universidad de Valladolid,
Spain.