Reliance Communications will invest $1.5 billion (nearly Rs 7,000 crore) in its FLAG undersea cable system, upgrading it by adding an Internet protocol,next generation network (NGN) of 50,000 km.On completion three years later, the FLAG network will span 1.15 lakh km, taking the total optical fibre assets of the company to over 2.3 lakh km, said Mr Anil Ambani, Chairman, at a news conference
