Oi S.A. (Oi) is an integrated telecommunications service provider in Brazil. The Company is a switched fixed-line telephony services (STFC) concessionaire. It is engaged in the provision of STFC as a local and intraregional long-distance carrier. ...
Oi S.A. (Oi) is an integrated telecommunications service provider in Brazil. The Company is a switched fixed-line telephony services (STFC) concessionaire. It is engaged in the provision of STFC as a local and intraregional long-distance carrier. Its services are divided into three categories: Residential Services, Personal Mobility, and SME and Corporate.