Tata Teleservices is part of the Rs. 120,000 Crore (US$ 29 billion) Tata Group, that has over 87 companies, over 330,000 employees and more than 2.8 million shareholders. The Group has a formidable presence across the telecom value chain.

Tata Teleservices (Maharashtra) Limited (TTML) spearheads the Tata Group's presence in the Indian telecom sector by being the premier telecom service provider, licensed to provide services in Maharashtra (including Mumbai) and Goa.

Tata Comm. is India's leading international telecom service provider. It is today part of the Tata Group. It started as a successor to the erstwhile Overseas Communication Services, and went on to become the premier provider of international voice and data services.