Società_Idroelettrica_Piemontese
SIP (company)
Italian telecommunications company, 1964–1994
Società Italiana per l'Esercizio Telefonico p.A. (formerly Società Idroelettrica Piemontese p.A.), commonly known as SIP or SIPTEL, was the Italian state-owned telecommunications company, which dealt with public, fixed and mobile telephony.
In 1994 it became Telecom Italia S.p.A.