OI ON N1 revenue for the last year amounted to 10.01 B BRL, the most of which — 4.42 B BRL — came from its highest performing source at the moment, Hi Fiber, the year earlier bringing 4.00 B BRL. The greatest contribution to the revenue figure was made by Brazil — last year it brought OI ON N1 9.61 B BRL, and the year before that — 10.37 B BRL.