It is under the ownership of Department of Telecommunications, Ministry of Communications, Government of India.

It was founded in 1948 as a departmental factory, incorporated as a public company in 1950 and today has six manufacturing facilities at Bangalore, Naini, Mankapur, Raebareli, Palakkad and Srinagar which produce a range of switching, transmission, access and subscriber premises equipment.

It has multi-locational electronic assembly and mechanical manufacturing facilities, countrywide marketing and customer support centers and in-house R&D for absorption of technology, indigenous development of products for in-house manufacturing.

[11] These two facilities supply more than nine million lines per annum to both domestic as well as foreign markets.

[12] On 01-10-2020, ITI Limited signed a contract with Defence to implement ₹7,796 crore ASCON Phase-IV project.