High Quality Content by WIKIPEDIA articles! The Indian Telecommunications Service, widely known as ITS, and earlier known as `Telegraph Engineering Service Class I`(TES Class I)is an organised civil service of Government of India. The appointment to this service is done through Combined Engineering Services exam held every year by Union Public Service Commission (UPSC) of India. ITS is a Group A Central Civil Service of the Union of India. The service was created to meet the technical and managerial functions of the government in areas related to telecommunications.The Department of Telecommunications (DOT) had been run for years by this permanent cadre of technical civil servants called the Indian Telecom Service (ITS).