telephone cable 1:conductor :copper 2:Type:HYY 3:PE insulation,PE Jacket Conductor size:2 pairs,4 pairs 0.4, 0.5 ,0.6, 0.7mm ... telephone cableDescription:1/ Conductor :solid copper,size 0.4, 0.5 ,0.6, 0.7mm2/ used in outerdoor ... : Undercarpet or surface wiring.Color: black or customer design. HYY telephone cable