Standardization of Telecommunication Power Equipment in Brazil

Brazil is a country with a large territorial extension which is divided into 26 states. Each state has its own telephone administration. Determined by the characteristics of each state, which vary from São Paulo with more than 12 million inhabitants in its capital to Amazonas with small villages in the Amazonian forest, there are significant differences between the administrative and operational staff of these companies. The small administrations used to ask the bigger ones, like TELESP, EMBRATEL, TELEPAR, etc., to help them with projects, specifications and acceptance of the equipment. With the stablishment of the holding company, TELEBRÁS (TELECOMUNICAÇÕES BRASILEIRAS), they wanted to uniform all the different specifications. At that time, TELEBRÁS brought together the manufacturers (4 to 6 companies) and the administration to start the elaboration of a power-supply specification standard. This paper will show the efforts to provide the country with normalized power systems, from tne point of view of Ericsson do Brasil, the advantages and disadvantages, 10 years after their introduction.