Supply Of Polythene Insulated Polythene Sheathed 20 Pair Jelly Filled Telephone Cable With Poly-al Moisture Barrier, As Per Rdso Specification No -irs:tc-41/970.63mm Diameter. & 24 Fibre Armoured Optical Fibre Cable As Per Rdso Specification No. Rdso/spn/ Tc/110/2020 Rev.-0.0 Or Latest ..