Nokia announced that a TETRA system it has deployed in Brazil — the first of its kind, according to Nokia — is on line for use by public-safety agencies, public utilities, enterprises and government entities in Sao Paulo, Rio de Janeiro and Brasilia. The system consists of TETRA switching equipment, TETRA base stations, and a dispatcher workstation. Nokia was selected for the project by Telcom TelecomunicaÁ¦es do Brasil Ltda.