Telecom Argentina S.A. is the major local telephone company for the northern part of Argentina, including the whole of the city of Buenos Aires. Briefly known as Sociedad Licenciataria Norte S.A., it quickly changed its name, and is usually known as simply "Telecom" within Argentina. Together with Telefónica de Argentina in the southern part of the country, was part of the national fixed telephone market duopoly, until 8 October 1999. Telecom also operates the mobile phone service Personal, the cable modem service Arnet-Fibertel and the cable operator Cablevisión, now under the brand "Flow". History In 1990, Argentina started to privatize most of its state-owned utilities: power, water, trains, and telecommunications, just to name a few. The monopoly of state-owned phone service ENTel was split into two territories: Stet International (the previous name of Telecom Italia and France Télécom was given the "upper half" of the country, from the middle to the north, and Telefónica was given the southern part. Each company was given an initial 7 year monopoly beginning on November 8, 1990. Initially, other companies were given exclusive licenses for international long distance, as well as cellular phone service. Telecom Italia and France Télécom later sold its part of the company to the Argentine Werthein Group. Its Puerto Madero headquarters were designed by the American architectural studio of Kohn Pedersen Fox, and inaugurated on February 18, 1998. Both local phone companies turned their systems into profitable operations in just a few years, despite the terrible conditions they inherited from ENTel. In the worst years of ENTel, a line activation would take several years. The telephone wiring layout across the country was undocumented. At privatization in 1990, the wait was still 4 years to get new service and 40 days for repair. Starting off Telecom Argentina invested into the country and during the first 8 years of strong investment in infrastructure deployment at a rate a little less than a billion u$s per year, with a complete restructuring of the copper access network and the deployment of one of the most advanced and large deployment of SDH long-distance fiber network at those times 2.5Gbit/s networks, and the upgrade of almost all central offices, most of them electromechanical and also some manual small exchanges. Some years later, all of the phone network was upgraded to a state-of-the-art system, from central telephone exchanges up to the wires going into homes; by 2005,