[wsj-responsive-image P="//art.wsj.net/api/photos/38007492/smartcrop?height=499&width=749" J="//art.wsj.net/api/photos/38007492/smartcrop?height=639&width=959" M="//art.wsj.net/api/photos/38007492/smartcrop?height=853&width=1280" caption="The logo of Brazil's largest fixed-line telecoms group Oi is seen inside a shop in Sao Paulo October 2, 2013. Oi SA on April 25, 2016, formally started talks to restructure $14.3 billion of bonds, pitting some of the world's biggest investors against each other as Brazil's most-indebted phone carrier fights for its survival.
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