Thanks in part to AT&T’s whole home deployments that started in September, subscribers to TV services powered by the Microsoft Mediaroom Internet Protocol Television (IPTV) and multimedia software platform have more than doubled over the past year.

Mediaroom enabled-services currently reach over two million subscriber homes on nearly four million set-top boxes worldwide, according to Microsoft.

In the past quarter, Mediaroom customers have connected 500,000 new subscribers across the globe.

Microsoft said the accelerated growth rate comes as customers begin to maximize the functionality of the Mediaroom platform to differentiate their service offering with features such as personalized weather and sports information, the freedom to play back standard-definition and high-definition recorded programs on any connected TV in the home, or the ability to set the digital video recorder (DVR) remotely via a PC or mobile device.

AT&T Inc. is one of Microsoft’s fastest-growing Mediaroom customers with 781,000 AT&T U-verse subscribers as of the end of the third quarter.

Since its initial launch in September, AT&T has continued to roll the service out in other areas and plans on having it deployed in the entire U-verse footprint by the end of the year. (see story here)

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