City Chennai Telephones Share FacebookTwitterWhatsAppEmailTelegram Chennai Telephones Morning Alarm & Reminder Service 173 Time Announcement in English 174 Time Announcement in Tamil 175 Time Announcement in Hindi 177 Trunk Booking 180 Assistance / Cancellation 181 Trunk Information 183 Phonogram Service 185 International Calls 186 International Enquiries/Asst. 187 Trunk Delay Enquiry 188 Lightning Call Booking 189 Trunk Assistance 191 Directory Enquiry 197 Repair Service 198 Local Assistance 199 Change of Telephone No in Tamil 1953 Change of Telephone No in English 1952 Public Grievances 78, Purasawakkam High Road Chennai – 600 010 Tel: 91-44-26422200 Fax: 91-44-26420001 Public Relation Officer – 91-44-26614141, 91-44-26425111 Advertisement - Advertisement -