corrigendum : supply of supply of server hardware and software , supply of server hardware and software for centralized monitoring of voice communication with voice logging between stations / dg/shy through vhf based secured communication equipment as pe r no rdso/spn/tc/38-2002 ver 2 or latest amendments or latest. the technical specification is as follows: ( 1). processor - intel core tm 17-6700t or higher, memory: 16gb, hard drive: 1 tb ssd, graphics card: nvi dia geforce gt 730 (4 gb ddr3 dedicated), networking 802 m, 11 b/g/n (1x1) and bluetooth 4.0 m. 2 com bo, sound card: dts studio sound?, keyboard, and mouse: hp usb wired keyboard with volume control, po wer supply: 180w ac power adapter, audio: dts sound?, memory slots: 2 dimm, external i/o ports: 2 usb 3 .0; 4 usb 2.0 dimm, windows 11 operating system, led monitor: 24 (23.08) 24 es slim full hd ips. (ii). ce ntralized monitoring server software with search, syns, online monitoring & data backup facility. (iii). 1.2 m m thick steel 19 rack, 600 mm w x 32 u hx 600 mm d, fully power coated. doors / panels detachable, fr ont and back door with locking arrangement, casters 4 nos. [ warranty period: 30 months after the date of delivery ] ] , supply and installation of 02 channel voice data recording and processing unit (vdrpu) as per. rdso / spn / tc / 38 - 2002 ver 2 or latest. make: ae telelink or equivalent. [ warranty period: 30 months after the date of delivery ] ] , supply and installation of vhf receiver to record communication with in the radio coverage area of station vhf equipment as per specification enclosed. note: vhf based secured communication equi pment has in-built vhf radio which is configured on dg frequency to record communication. if railways als o want to record communication on shy frequency simultaneously, then this is required per location. this it em must be compatible with vdrpu mentioned under sr. no. 1. [ warranty period: 30 months after the d ate of delivery ] ]