Mr. Antonio Buchi Buc serves as Chief Executive Officer at Entel PCS Telecomunicaciones S.A. Mr. Buc has been the Chief Executive Officer of Empresa Nacional de Telecomunicaciones S.A. since March 2011. He served as a General Manager of Network Businesses Fixes and Manager of Planning and New Corporate Businesses at Empresa Nacional de Telecomunicaciones S.A., until March 2011. He joined the Empresa Nacional in 2000 as Planning and New Business Executive. He serves as Chairman of The Board at Transam Comunicaciones S.A. He serves as a Director of Entel Telefonia Personal S.A. He serves as a Director at Entel Inversiones S.A. and ENTEL Telefonía Local SA. He served as a Member of Board of Directors at Entel PCS Telecomunicaciones SA. Mr. Büchi Buc is Civil Industrial Engineering from Pontificia Universidad Católica de Chile and holds Master of Arts in Economics from University of Chicago.