Brazil's Oi signs agreement with Portugal Telecom to save merger

SAO PAULO, July 16 Wed Jul 16, 2014 6:33am EDT

SAO PAULO, July 16 (Reuters) - Brazil's Grupo Oi SA said in a market filing early on Wednesday that it had signed a memorandum of understanding with Portugal Telecom to protect their merger and give Oi guarantees against potential losses from an investment in Rioforte. (Reporting by Reese Ewing; Editing by Lisa Von Ahn)