 RALEIGH-DURHAM, N.C.--BUSINESS WIRE--Avaya NYSE: AVYA, a global leader in solutions to improve and simplify communications and collaboration, has been named one of the top five most culturally powerful companies in the Americas by the TOP Americas Ranking organization and El Economista magazine. The annual ranking recognizes local and multinational companies from a wide range of industries based on an Index of Culture and Organizational Climate. The index is based on key organizational cul 