152Patterns: Pervasive and Rich Device Access Solutions
9.1 Overview
This chapter is a summary of requirements that are needed to support PIM and
e-mail synchronization on mobile devices in the ITSO Railway’s scenario. It is an
implementation based on the following Runtime pattern.
Figure 9-1 Runtime pattern for the PIM and e-mail scneario
The Product mapping for the Runtime pattern we use for this book is found in the
following diagram.
ISP Gateway
(Pervasive
services)
User
Outside World
Demilitarized Zone
(DMZ)
Internal Network
Client
Data services
Data services
Pervasive
client
services
Protocol Firewall
Domain Firewall
Presentation/
Application
Application
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