...+ Brazil-based telecommunications company Oi S.A. announced yesterday that it had arrived at an agreement in which Moelis & Company will act as advisor for a group of bondholders to expedite discussions over a potential debt restructuring. + We believe that a debt restructuring is likely to occur over the next six months. + We are lowering our global scale corporate credit and issue-level ratings on Oi to '###-' from '###' and our national scale ratings to 'brCCC-' from 'brCCC'. + The negative outlook reflects our view of a high likelihood that the company will restructure its debt or make a distressed debt exchange over the next six months. SAO PAULO (Standard & Poor's) April 26, 2016--Standard & Poor's Ratings Services lowered its corporate credit and issue-level global scale ratings on Oi S.A. (Oi) to '###-' from '###' and its national scale ratings to 'brCCC-' from 'brCCC'. The recovery ratings on the company's rated debt remain unchanged at '4', indicating our expectation for average...