The main trade associations to which TIM Brasil belongs are: ■ ABR Telecom (Brazilian association of telecommunication resources), for the centralised and shared management of telecommunication solutions; ■ TelComp (Brazilian association for competitiveness in telecommunication), which represents the interests of operators for competitiveness in the sector; ■ SINDITELEBRASIL (national union of telecommunication operators), which works to coordinate, defend and legally represent its member companies, which includes all the fixed and mobile telephone operators; ■ GSMA which represents the interests of mobile operators throughout the world.