annual maintenance contract for 4584 plus and minus 100 lan nodes and 310 lan switches installed at all district court complexes in delhi for the period of two years , manageable switches ( l2 ) with 24 ports , manageable switches ( l2 ) with 48 ports . , manageable switches ( l3 ) , un-manageable switches ( l2 ) , hub switch , nodes ( pc to rack ) , patch cord ( 3-7 feet ) , cat 6 / 5 ios ( faceplate ) , jack panel , optical fiber patch cord , no of segments of optical fiber cable ( single mode / multi mode ) ( indoor / out-door 6 core tight buffered armored cable ) having total length 13089 mtr , modules ( single mode / multi mode ) , 12 core liu , 24 core liu