TCIL offers total telecom solutions for projects. TCIL works in almost 45 Countries mainly in Middle East Africa, South-East Africa, South-East Asia and Europe. The Organisational Structure is formed with the objectives of providing globally world-class technology and Indian expertise in all fields of Telecommunications and to provide total Quality management & excellence in project execution.

TCIL, a prime engineering and consultancy company, is a wholly owned Government of India Public Sector Enterprise under the administrative control of the Department of Telecommunications(DOT), Ministry of Communications and Information Technology, Government of India. TCIL was set up in 1978 for providing Indian telecom expertise in all fields of telecom, Civil and IT to developing countries around the world. Company's core competence is in the fields of Switching, Transmission Systems, Cellular services, Rural Telecommunication, Optical fibre based backbone transmission systems, IT & Networking Solutions, Application Software, e-Governence, 3G Network, WIMAX Technology and also Civil construction projects.