... Flat telephone cable Round Telephone cable Tinned Copper Telephone Cable,Parallel Telephone CableStandards:UL20251Sranded Bare or Tinned Copper Conductor or Tinest WirePP InsulationPVC jacket2 core ... , 4 core, 6 core, 8 coreRound Telephone CableStandards:IEC189,BS4808Solid Bare or Tinned Copper ConductorPVC insulationCores twisted as pair typePVC jacket2, 4, 6 ...