MTNL Mahanagar Telephone Nigam Ltd Other Situations Announcement 2023 - MTNL - Redemption of Bond MTNL has exercised a call option for redemption of Bonds (1000 No of Bonds having face value Rs. 10,00,000/- on 18.11.2023)..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd