DATED: 7th August 2012
THIS NOTICE IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION
Brasil Telecom S.A.
The Issuer wishes to announce On February 27, 2012, the corporate name of Brasil Telecom S.A. was changed to Oi S.A.
SCHEDULE 1: CONTACT DETAILS
Name: Tracy Sheridan
This announcement has been issued through the Companies Announcement Service of
the Irish Stock Exchange.