Indian Telecommunication Service

The Indian Telecommunications Service ( भारतीय दूरसंचार सेवा), widely known as ITS, and earlier known as Telegraph Engineering Service Class I (TES Class I) is one of the Central Civil Services 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.

Source: Wikipedia — Indian Telecommunication Service (CC BY-SA 4.0)