Fibrant, a telecom company owned and operated by the City of Salisbury in North Carolina, and Calix Inc., a telecom equipment provider, announced this week that Salisbury, N.C., has become first city in the United States to get 10-gigabit Internet service. Robert Van Geons, Salisbury's economic development director, said in phone interview Friday that this service is available throughout the city. While no residential accounts have been sold yet, Kent Winrich, director of broadband infrastructure at Fibrant, who was on the same call, said residential subscriptions are available for $400...