AT&T was busy this week at its Developer Summit in Las Vegas, including unveiling its Digital Home monitoring service and providing developers with details of tools such as one to allow porting of a mobile-phone number across multiple devices. AT&T Chief Technology Officer John Donovan discussed the carrier's plans to "densify" urban networks by substituting small cell sites for larger ones, a step aimed at preventing blocked calls and providing more reliable data speeds. AT&T and Qualcomm introduced the "Internet of Everything" development platform based on a Qualcomm Gobi chipset designed to allow Java-based embedded devices to connect with the carrier's 3G network and to build industrial and health care apps.

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