supply of supply, installation testing & commissioning of 8 channel voice data logger/monitorsupply, installation testing & commissioning of 8 channel voice data logger/monitor,supply, installation testing & commissioning of 8 channel voice data logger/monitor for contr ol circuits as per technical rdso specification no. rdso/spn/tc/038-2002 ver.2 or latest consisting of (1) 4 channel voice data recording, processing unit (vdrpu)-02 nos. (2) computer having following specification or better model: a) intel core - i5 processor, b) windows 11 pro os or latest, c) memory 8 gb ddr4 ram, d) dvd writer, e) led monitor size of 23.08 inch display f) 500gb ssd storage g) key board and mouse headp hone and speaker and other additional accessories as per requirement. (3) 8 port network switch, (4) 19 rack floor mounted 32 u -01 no.(5) ups 1 kva - 1 no. with earthling distribution arrangement, cable/route manager. [ warranty period: 30 months after the date of delivery ] ]