September 13, 2012

Accenture to Help Oi Transform Business Operations

and Support Strategic Growth Objectives

Rio de Janeiro, Brazil; Sept. 13, 2012 – Oi SA (NYSE: OIBR/C), one of Brazil’s leading providers of communications services, and Accenture (NYSE: ACN) have signed a seven-year agreement for Accenture to help Oi transform its business by having Accenture manage Oi’s billing and collections, finance and accounting, human resources, supply chain, and select back office functions.

Under the agreement, Accenture will provide Oi services through a flexible model designed for today’s business challenges, ultimately supporting Oi and its goal to improve efficiency, quality and cost-effectiveness. Through its deep communications industry knowledge, and supported by its management consulting, technology and business process outsourcing expertise, Accenture will focus on improvements designed to help transform Oi’s operations and support future growth.

“We are committed to Oi’s success as they execute their strategic business plans and undergo this transformation,” said Robert Sell, group chief executive of Accenture’s Communications, Media & Technology operating group. “By leveraging Accenture’s industry and functional expertise combined with analytical tools and technologies, we’ve moved beyond operational cost reduction to drive more meaningful business outcomes for Oi. This agreement expands our longstanding relationship, and the work we perform will help make Oi an even stronger market competitor.”

About Accenture

Accenture is a global management consulting, technology services and outsourcing company, with more than 249,000 people serving clients in more than 120 countries. Combining unparalleled experience, comprehensive capabilities across all industries and business functions, and extensive research on the world’s most successful companies, Accenture collaborates with clients to help them become high-performance businesses and governments. The company generated net revenues of US$25.5 billion for the fiscal year ended Aug. 31, 2011. Its home page is www.accenture.com.

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Contacts:

Ivan Scarpelli

Accenture

+ 55 1151 881796

ivan.scarpelli@accenture.com

Gary Morgenstern

Accenture

+ 973 301 3347

gary.a.morgenstern@accenture.com