RCom will "also receive B Class non-voting shares in the tower company, providing 49 per cent future economic upside from the business based on certain conditions", the company said in a statement.
RCom will utilise the cash proceeds solely to reduce debt, it said.
The tower business will be demerged into a separate company, to be 100 per cent owned and independently managed by Brookfield Infrastructure. The deal represents the largest-ever investment by an overseas financial investor in the infrastructure sector in India.
The Anil Ambani-promoted RCom, and brother Mukesh Ambani's 4G telecom venture Reliance Jio will continue as major long-term tenants (of the tower company).
"RCom expects significant future value creation based on growth in tenancies from accelerating data consumption," the statement added.
Giving details, RCom said the combination of its wireless business with Aircel and monetisation of tower operations will together reduce the company's debt by Rs 31,000 crore (USD 4.6 billion), or nearly 70 per cent.
"RCom will continue to hold 50 per cent stake in Aircel JV and 49 per cent upside in tower business to be monetised at an appropriate time to further reduce debt significantly," it added.