DALLAS--(BUSINESS WIRE)--The Dallas-based telecommunications company, LinkAmerica, is making further progress into the converged IT and telecommunications industries. LinkAmerica was recently named No. 1 in the 2012 HispanicBusiness Fastest-Growing 100 ranking for its impressive five-year growth; the company rose from the No. 2 spot in 2011. In addition, LinkAmerica recently…