Antonio Estrada currently has served as ATSI's Corporate Controller since May 2003. From January 2002 through April 2003 Mr. Estrada served as ATSI's Director of International Accounting and Treasurer. From January 2001 to January 2002 Mr. Estrada served in various roles within ATSI including International Accounting Manager and General Accountant. Prior to joining ATSI in 1999 he served as a Senior Accountant for the Epilepsy Association of San Antonio and South Texas. Mr. Estrada has more than 9 years' experience in the telecommunications industry financial reporting treasury management internal audit and accounting. Mr. Estrada graduated from the University of Texas at San Antonio with a Bachelors of Business Administration with a concentration in Accounting. Mr. Estrada is fluent in English and Spanish.