Details: cost of engagement of following staffs for comprehensive annual maintenance of following epabx intercome system of stated building having facilities for checking the fault and rectify the same, (telephone sets, card and cable not included) within 4 hr. also repairing the landline telephone connection of both below stated building beyond the scope of bsnl.and audio-visual system of 5th & 6th floor conference hall of nagarayan incl. its maintenance and alsodvr of cctvmaintenance by engaging following technician personal. nagarayan:-------- a) 8+106 epabx intercom system - 1 no. b) 1+4 epabx intercom system - 5 nos. c) 1+1 epabx intercom system - 5 nos. nirman bhavan,