AT&T Invests More Than $600 Million Over Three-Year Period To Enhance Local Networks In Maryland

[PR Newswire] – ANNAPOLIS, Md., March 7, 2014 /PRNewswire/ — AT&T* has invested more than $600 million in its best-in-class wireless and wired networks in Maryland from 2011 through 2013, driving a wide range of upgrades to enhance speed, reliability, c more

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