Airtel has 71.70 per cent stake in Infratel.
The company plans to sell 5 per cent stake in Infratel, proceeds of which are likely to be used to cut debt, sources said.
They, however, did not give any timeline for the stake sale.
When contacted, a company spokesperson declined to comment.
The net debt of Airtel stood at Rs 78,816 crore at the end of December 2015.
Airtel has acquired rights to use 4G spectrum of Aircel in eight telecom circles for Rs 3,500 crore, while the deal for spectrum in six circles with Videocon Telecommunication stood at Rs 4,428 crore.
Telecom operators are consolidating their positions by loading up on spectrum ahead of Reliance Industries' much talked about fourth-generation wireless services to be launched this year.