Arnaud Henry-Labordere 
Virtual Roaming Systems for GSM, GPRS and UMTS [PDF ebook] 
Open Connectivity in Practice

This book provides a detailed technical guide to the virtual and
optimised roaming systems for mobile networks
Written by a pioneer in the field, this book focuses on the
implementation of virtual roaming systems. It generalizes the
previous SS7 SMS interworking architectures to voice and data,
GPRS, and 3G virtual roaming; extending the discussion of virtual
roaming to include location based services, optimal routing and 4G
perspectives. The author provides a thorough and detailed technical
explanation of the topic covering subjects such as ‘Over the
Air’ (OTA) provisioning and detailed geo-localisation systems
in a virtual roaming environment. Finally, this book addresses the
application of MAP, CAMEL, TCAP, SCCP, and GTP.
Key Features:
* Provides a thorough and detailed technical coverage of virtual
and optimised roaming systems for mobile networks
* Explores the application of MAP, CAMEL, TCAP, SCCP, and
GTP
* Discusses previous SMS Hubs architecture used for SMS
interworking and generalises to voice, data, and 3G virtual
roaming
* Includes material on pre-paid case with CAMEL parameter
transformations, SMS, Supplementary Services and USSD
implementation
* Focuses on roaming hubs (including an, introduction to Sigtran
configuration) and transparent networks of hubs
This book will serve as an invaluable reference for network and
networking engineers, handset developers, systems implementers,
systems integrators, systems software engineers and programmers,
wireless specialists and anybody else seeking a comprehensive and
practical guide to the basics of virtual roaming systems.

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