 In August 2003, ETB entered into negotiations for the centers of telephone contracts by the way of a commercial alliance with Publicar.In this way, the company ‘Contact Center of the Americas’ was created.In 1961 it began operating the plants of Usaquén, Bosa, Suba and Antonio Nariño, allowing to have 400,000 users by 1979 and 710,000 in 1985.