TIM S.p.A., also operating under the name Telecom Italia , is an Italian telecommunications company headquartered in Rome and Milan , which provides telephony services, mobile services, and DSL data services. It is the largest Italian telecommunications services provider in revenues and subscribers. It was founded in 1994 by the merger of several state-owned telecommunications companies, the most important of which was Società Italiana per l'Esercizio Telefonico p.A., (known as SIP, from the earlier Società Idroelettrica Piemontese), the former state monopoly telephone operator in Italy .The company 's stock is traded in the Borsa Italiana. Since 2017 the Italian State exercises the "Golden Power", which allows the government to take actions to protect the strategic interests of the country , over Telecom Italia .
In 1925, the phone network was reorganised by the Benito Mussolini cabinet and the company Stipel was established in the same year. The original core of Telecom Italia included 4 companies: TIMO, Teti, TELVE and SET. Each of them operated in a specific geographical area . In 1964 these companies merged in one single group under the name of SIP.
In 1964, Società Idroelettrica Piemontese (SIP), a former energycompany founded in 1918, ceased producing energy and acquired all of the Italian telephone companies, becoming SIP - Società Italiana per l'Esercizio Telefonico. It was run by the Italian Ministry of Finance .
SIP was a state monopoly from 1964 to 1996 and Italian people had to pay the "Canone Telecom" (a line rental charge of about €120 per year, plus hardware rental and other minor costs) in order to have a phone at home.
Telecom Italia was officially created on 27 July 1994 by the merger of several telecommunication companies among which SIP, Iritel, Italcable, Telespazio and Sirm.