The Ethiopian Telecommunications Corporation (ETC) is the sole telecommunication service provider in Ethiopia. Based in Addis Ababa, it is the second-largest state-owned company in Ethiopia, the largest being Ethiopian Airlines.Originally a division of the Ministry of Post, Telephone and Telegraph, what would become the ETC was established as the Imperial Board of Telecommunications of Ethiopia (IBTE) by proclamation No. 131/52 in 1952. Under the Derg Regime, the IBTE was reorganized as the Ethiopian Telecommunications Service on October 1975, which was in turn reorganized on January 1981 as the Ethiopian Telecommunications Authority. On November 1996, the Ethiopian Telecommunications Authority became ETC by Council of Ministers regulation No. 10/1996. The subsequent Proclamation 49/1996 expanded the ETC's duties and responsibilities. For its international traffic links and communication services, ETC mainly uses its earth station at Sululta which transmits and receives to both Indian Ocean and the Atlantic Ocean satellites.