Year-end 2011 results for Vertical Systems Group's U.S. Business Ethernet Leaderboard are as follows (in rank order based on port share): AT&T, Verizon, tw telecom, Cox, XO, CenturyLink (includes Qwest and Savvis), Time Warner Cable, Level 3 (includes Global Crossing), and Cogent. ...

Vertical Systems Group's latest research on enterprises with multinational networks quantifies that the following six companies have attained a position on the Mid-2011 Global Provider Ethernet Leaderboard (in rank order): Orange (France), Verizon (U.S.), Colt (U.K.), NTT (Japan), AT&T (U.S.) and Global Crossing (U.S.). ...

AT&T, Verizon, tw Telecom, Cox, XO, Qwest, Time Warner Cable and Level 3 (in rank order) comprise Vertical Systems Group's year-end 2010 U.S. Business Ethernet Leaderboard, according to latest research on enterprise network installations....

Competitive Providers and Cable MSOs gained U.S. Ethernet port share from Incumbents in the first half of 2010, continuing a trend that began in the second half of last year, according to latest Vertical Systems Group research on enterprise installations. ...