The Indian Telecommunications Service, widely known as ITS, and earlier known as 'Telegraph Engineering Service Class I' (TES Class I) is one of the gazetted Central Civil Services (technical) under Group 'A' of the executive branch of the 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. The service was created to meet the techno managerial needs of the government in areas related to telecommunications. The Department of Telecommunications (DOT) had been managed for years by the officers of this permanent cadre, called the Indian Telecommunications Service (ITS).The officers of ITS work under restrictions and rules of Central Civil Services (Conduct) rules.