Tata Teleservices Limited along with its subsidiary Tata Teleservices Limited is an Indian internet services provider and IT services company headquartered in Mumbai, India. It is listed on BSE and NSE in India. From Wikipedia
India's top court dismisses Vodafone Idea, Bharti Airtel, and Tata Teleservices' petitions, leaving telecom sector in financial peril and urging executive intervention.