MAHANAGAR TELEPHONE NIGAM LTD. - Board Meeting Intimation for COMPLIANCE OF REGULATION 29 (1) (A) & 50 (1) (C) OF SEBI (LODR) REGULATIONS, 2015 - INTIMATION OF BOARD MEETING FOR APPROVING THE UNAUDITED REVIEWED FINANCIAL RESULTS FOR THE QUARTER ENDED ON 31ST DECEMBER, 2023.