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AT&T Loses at U.S. Supreme Court on Price for Sharing Lines

Established local telephone companies including AT&T Inc. must share disputed parts of their networks with competitors at cost, the U.S. Supreme Court ruled.

The unanimous ruling backs the position taken by the Federal Communications Commission in a fight stemming from the 1996 law that injected competition into the local telephone business. The law requires so-called incumbent local carriers, whose ranks also include Verizon Communications Inc. and CenturyLink Inc., to share their facilities with rivals.