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Sérgio Assenço Tavares dos Santos, born on June 3, 1948, is the Vice President of Regulatory Matters of Vivo Participações, Vivo S.A., and TCO-IP S.A. From January 2006 until February 2006, he was a Vice-President of Regulatory Matters and Institutional Relations of TSD, Celular CRT and TLE and from January 2006 until October 2006, Mr. Tavares dos Santos was a Vice-President of Regulatory Matters and Institutional Relations TCO, Telerj, Telest, Telebahia, Telergipe, Celular CRT, TC, Telegoiás, Telemat, Telems, Teleacre, Teleron, NBT. From October 2004 until December 2005, he was the Regional Director of TCO and subsidiaries, including NBT; from January 2003 until September 2004, he was the President and Vice-President of TCO and subsidiaries, including NBT; from October 1998 until December 2002, he was the Director of Engineering and Operations of TCO and subsidiaries, including NBT; from February 1998 until September 1998, he was Executive Vice-President of TCO, Telegoiás Celular, Telemat Celular, Telems Celular, Teleacre Celular and Teleron Celular. He was Director of Engineering and operations of Telecomunicações de Brasília S.A. Telebrasília S/A, a fixed telecommunications company, between July 1995 and January 1998, and was also Manager of the Business Unit of Advanced Telecommunications of the Operations Department of Telebrasília from April 1994 until July 1995 and Assessor and Coordinator of Special Projects of the Engineering Department of Telebrasília from September 1993 until March 1994. He held several different positions at Telebrás from July 1990 until August 1993 and also held several different positions at Telebrasília between March 1976 and July 1990. Mr. Assenço holds an Electrical Engineering degree from Brasília University, Brazil. Mr. Assenço is a Brazilian citizen. | 