supply of 20 pairs pijf cable, 0.63 mm. dia copper conductor twisted pair armoured with solid polythene insulated copper conductors, core fully filled with filling20 pairs pijf cable, 0.63 mm. dia copper conductor twisted pair armoured with solid polythene insulated copper conductors, core fully filled with filling,20 pairs pijf cable, 0.63 mm. dia copper conductor twisted pair armoured with solid polythen e insulated copper conductors, core fully filled with filling compound and with poly-al laminate moisture bar rier bonded to the polythene sheath, with two applications of galvanized steel tape, as per tec generic req uirements no. gr/cug-01/03aug 2003 with latest amendment [ warranty period: 30 months after the da te of delivery ] ]