BOC multi-purpose break-out cable use simplex cable ( Ø900µm tight buer, aramid yarn as strength member) as subunit. Aber reinforced plastic (FRP) locates in the center of core as an on-metalic strength member. The subunits are stranded around the cable core. The cable is completed with a PVC or LSZH (Low smoke, zero halogen, Flame-retardant) jacket.