What is meant by redemption of debentures by conversion?

When a debenture holder can convert his/her debentures into shares or new debentures after the expiry of a specified period of time, then it is known as redemption of debentures by conversion. As the company do not need to pay any funds for the redemption, so there is no need to maintain the Debenture Redemption Reserve (DRR). The new shares or debentures may be issued at par, premium or at discount.