supply of 10 pair x 0.50 mm dia polythene insulated polythene strengthened jelly field under ground telephone cable with poly aluminium moisture barrier annealed copper conductor double steel tape armoured with polythene jacketed as per rdso specification no.irs.tc / 41 / 97 with amdt 2 or latest. packing length should be 500 mtrs per drum. [ warranty period: 30 months after the date of delivery ] , supply of 10 pair x 0.5 dia polythene insulated polythene strengthened jelly filled underground telephone cable with poly aliminium moisture barrier annealed copper conductor double steel tape armoued with polythene jacketed as per rdso specification no.irs:tc / 41 / 97 with amdt 2 or latest. packing length should be 500 mtrs per drum. 2.5 km0 113870.00 284675.00 20533204 110353227001. [ warranty period: 30 months after the date of delivery ] , supply of 100 pair x 0.5mm dia polythene insulated polythene sheathed jelly filled underground telephone cable with poly aluminum moisture barrier annealed copper conductor double steel tape armored with polythene jacketed as per rdso specn. no.irs.tc.41 / 97, amdt.3 or latest. packing length should be 500 mtrs each drum. [ warranty period: 30 months after the date of delivery ]