bids are invited for custom bid for services - maintenance of lan network and supply and fixing of network accessories - core switch 24 port l3 managed with 20 sfp ports, 4 combo 100/1000 base-t/sfp ports and 4 sfp+ (10g) ports with g.802 ethernet ring protection with redundant power supply with oem support. (make: d-link model: dgs-3630-28sc/insi) (d-link make power supply dps-500a). , l2 24 port managed rack mount switch with 24x1000 mbps ports g.8032 ethemet ring protection and 4x1000 mbps sfp ports with g.8032 ethernet ring protection with oem support. (make: d-link model:dgs-3000-28l). , l2 24 port managed rack mount switch with 24x1000 mbps ports and 4 x 1000mbps sfp ports with g.8032 ethernet ring protection with oem support. (make: d-link model:dgs-1510- 28x). , maintenance of ups (0.6 kva) (make libert model: iton 600va). , supply & installation of 1 gb single mode fiber module. , removal and fixing of rack including switch/liu/ups accessories etc. , supply of i/o box (network keystone jack + gang box + dual port face plate). , charges for fixing and crimping of information outlets on wooden/pvc plug including all necessary accessories. , supply of pig tail (for ofc). , supply of sc coupler (for ofc). , splicing, termination & establishing connectivity of optic fibre cable. , laying of ofc through pvc pipe. , termination & establishing connectivity of cat 5e/cat 6 lan cable. , supply of cat 6 utp lszh cable, 4 pair, 23 awc. lszh jacket and ul listed and etl tested up to 650 mhz (305 meters /coil). , fixing of 1 pvc pipe including all necessary accessories like tees, screws, bend flexible hose etc., ( nlcil will provide casing & capping). , laying of cat5e/cat 6 cable through pvc casing & capping pvc pipe (nlcil will provide casing & capping). , removal of cat5e/cat 6 cable, including casing & capping & pvc pipe.