John Chambers (L), chief executive officer of Cisco Systems Inc., speaks with Rene Obermann (R), chief executive officer of Deutsche Telecom AG during a keynote event at the Mobile World Congress in Barcelona, Spain, on Tuesday, Feb. 28, 2012. The Mobile World Congress, operated by the GSMA, expects 60,000 visitors and 1400 companies to attend the four-day technology industry event which runs Feb. 27 through March 1. at the Mobile World Congress in Barcelona on February 28, 2012 on the second d
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