MTNL Mahanagar Telephone Nigam Ltd Operational Disruptions Announcement 2026 - Regulatory Compliance MTNL reports a TRAI penalty of Rs 11 lakh for April 2025 QoS reporting violation, with no material impact on finances or operations..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Mahanagar Telephone Nigam Ltd