MTNL Mahanagar Telephone Nigam Ltd Material defaults in payments - Loan Defaults (Secured, Unsecured), Bond Defaults Announcement 2024 - Payment Default by MTNL MTNL has defaulted in the Payment of Principal (Instalment) & Interest to various banks, with a total default of Rs 422.05 crore as of 01-08-2024..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd