Upgradation of Rail net connectivity with fiber based network to cater workload of all IT applications for reliability improvement at DRM office, DNR along with associated office of Danapur station with fiber based network on Gigabit Passive Optical Network(GPON), Provision of Audio-Visual system in connection with construction of additional amenities near Rail Ashray Karbighahiya Patna and telecom work related to PAN India Roll-Out for PRS modernization Work against UTN Network over Danapur D