According to the Law, regulatory authority need to make a decision about market participants with significant power that will be in force for three years with a possibility to renewal. As the market has been defined as call termination on individual fixed networks, every company terminating calls has a significant market power in view of their market share of 100%.  Although every company initially has a significant power on its market, a distinction is still made when imposing the obligations. This way only Belgacom is obligated to publish a reference offer and performance indicators and to clarify its cost accounting system. All companies have the obligation to not charge more than a fixed termination rate (FTR). That tariff is symmetrical and based on the costs of an efficient network operator.