Portugal Telecom SGPS SA
Portugal Telecom SGPS SA engages in the provision of telecommunications and multimedia services. It operates through the Telecommunications in Portugal segment and Telecommunications in Brazil-Oi segment. The Telecommunications in Portugal segment involves Wireline, a fixed telecommunication services rendered through PT Comunicações and PT Prime, and Mobile, mobile telecommunication services rendered through TMN-Telecommunicações Moveis Nacionais SA. The Telecommunications in Brazil-Oi segment includes the holding company TNL-Tele Norte Leste Participações SA and Telemar Norte Leste and its subsidiaries. The company was founded on June 23, 1994 and is headquartered in Lisbon, Portugal.