Tata Teleservices will invest about 80 billion rupees ($2 billion) over the next 24 months to expand its telecom networks.
A Reuters report said Tata Teleservices, part of the Tata Group conglomerate, plans to launch GSM services across India by March 2009 and BlackBerry services by September this year, local newspapers.
About 60 billion rupees ($1.4 billion) would be used to build a pan-India GSM network and the rest would be used to strengthen the company's existing CDMA networks, the Economic Times and the Business Standard newspapers said.
Tata managing director Anil Sardana was quoted by the reports as saying the company was targetting a CDMA subscriber base of 100 million by 2011, by which time it expected to have 55 million new users on its upcoming GSM platform,
Tata Tele currently has a subscriber base of about 27 million.