What does DOS stand for?

MLA style: "DOS." Acronym Finder . 2013. AcronymFinder.com 22 May. 2013 http://www.acronymfinder.com/Data-Overhead-Switch-(Nortel)-(DOS).html
Chicago style: Acronym Finder . S.v. "DOS." Retrieved May 22 2013 from http://www.acronymfinder.com/Data-Overhead-Switch-(Nortel)-(DOS).html
APA style: DOS. (n.d.) Acronym Finder. (2013). Retrieved May 22 2013 from http://www.acronymfinder.com/Data-Overhead-Switch-(Nortel)-(DOS).html

Data Overhead Switch (Nortel)

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