Vertical Systems Group's Mid-2012 results for the U.S. Business Ethernet Leaderboard are as follows (in rank order based on port share): AT&T, Verizon, tw telecom, CenturyLink, Cox, XO, Time Warner Cable, and Level 3.
The ranking is based on billable enterprise port installations.
Other providers selling Ethernet services in the U.S. are segmented into two tiers as measured by share of ports installed. The first or "Challenge" tier for Mid-2012...
