The remaining Rs 650 crore will be received by the firm before March 31, 2015, RCom said in a statement.
"The company has received Rs 650 crore from Telecom Infrastructure Finance Private Limited equivalent to 50% of the issue price of the equity shares upon allotment of warrants and balance amount of Rs 650 crore will be received on or before March 31, 2015," it said.
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The proceeds of the preferential issue will be used to reduce debt, the company said.
RCom said that following a resolution passed by shareholders in July, the committee of directors have today allotted 8.67 warrants to Telecom Infrastructure Finance, a promoter group company.
Warrants, which entitle equivalent number of equity shares of Rs 5 each at a price of Rs 150 per share (including a premium of Rs 145 per share) aggregate to Rs 1,300 crore.
The country's fourth largest telecom operator has also raised Rs 4,800 crore from a share sale to institutional investors, the biggest QIP fund-raising by a private firm.
RCom said the consolidated net worth of the company has risen to Rs 31,369 crore.