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Download e-book for kindle: BlackBerry Development Fundamentals by John M. Wargo

By John M. Wargo

ISBN-10: 0321647424

ISBN-13: 9780321647429

The BlackBerry phone is modern number one cellular platform for the company and in addition a tremendous hit with shoppers. beforehand, it has been tricky for programmers to discover every little thing they should start constructing new purposes for BlackBerry units. BlackBerry improvement basics is the answer: the 1st single-source consultant to all facets of improvement for the BlackBerry platform. This ebook completely experiences the BlackBerry's certain services and boundaries, is helping you optimize your in advance layout offerings, and covers local rich-client functions and Web-based cellular functions for either company and patron environments.

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5. 6. 1 The following sections cover the various connection paths and highlight the strengths and limitations of each. 1 Wireless Application Protocol (WAP) Connection Before smartphones, back in the days of the early feature phones, carriers wanted to provide their customers with access to Internet-based resources. Because of the limitations of these devices (processing power, browser capabilities, and network bandwidth) a special protocol was created to provide a subset of typical desktop web-browsing capabilities to mobile devices.

These enterprise applications can open network connections to internal (inside the corporate firewall) application servers and securely access the data. 6 shows the path that a request takes to its destination. The request routes from the BlackBerry smartphone (1) through the carrier’s network (2) to the BlackBerry infrastructure (3) to the BlackBerry Enterprise Server running MDS (4), and then to the destination server (5). 7). In this case, the request routes from the BlackBerry smartphone (1) through the carrier’s network (2) to the BlackBerry infrastructure (3) to the BlackBerry Enterprise Server running MDS (4), and then out through the company firewall to the destination server (5).

Each carrier can configure its Service Books in different ways, and Enterprise BlackBerry administrators can control what connections are or are not allowed, even to the point of being able to disable something that the carrier has enabled. 1 shows an example of a BlackBerry Service Book from a BlackBerry Bold smartphone running on the AT&T wireless network. It describes the settings for WAP connections (explained later in this chapter). 0, in this case). 0. 2 shows the MDS Service Book. This Service Book is provisioned by the BES during enterprise activation.

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BlackBerry Development Fundamentals by John M. Wargo

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