Designed to operate over Nextel's 800-MHz national network, the BlackBerry 7520 smartphone builds upon the functionality of its BlackBerry predecessors by incorporating a new push-to-talk capability.
The new handset also incorporates the requisite GSP chip for enabling the location of the handset to be precisely determined whenever E911 calls are placed within a cellular coverage area where support  for the emergency service is provided.
Under the Hood
Measuring 4.5 x 2.9 x 1.1 inches and tipping the scales at 6.1 oz, the BlackBerry 7520 is equipped with the same abbreviated 33-key, Qwerty-style keyboard that is found on other BlackBerry models, such as the 7250 and 7290. The new handset from Research In Motion (RIM) also sports a 240x160-pixel TFT screen that is capable of displaying 65K+ colors, together with 32 MB of flash memory and 4 MB of SRAM.
The end-user must tap each key twice on the handset's thumbpad to gain access to the full set of text and numerical characters. Although this sounds rather tedious, the BlackBerry 7520 makes effective use of automated text-entry software that can predict words that are commonly used from the input of a minimum number of keystrokes.
The handset ships with a 900 mAh Lithium-ion battery that delivers a scant 152 minutes of talk time or up to 69 hours of operation in the standby mode. The unit's incoming call notification function is user-configurable as a tone, silent handset vibration, on-screen icon or flashing LED indicator.
Enterprise Capabilities
Like all other BlackBerry models, the 7520 can access messages from up to 10 personal or business ISP or POP3 e-mail accounts and even view or store e-mail attachments that are delivered to the handset's inbox in the JPG, BMP, GIF, PNG and TIFF file formats, as well as view Microsoft Word and Excel documents.
Individuals and smaller businesses will typically use RIM's Web-based BlackBerry Internet Service to gain access to their e-mail accounts.
Corporate e-mail located behind the firewall can also be pushed directly to the phone through the use of RIM's BlackBerry Enterprise Server software, which is designed to work with existing enterprise systems using Microsoft Exchange or IBM 's Lotus Domino. (continued...)
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