The invention relates to a process for preparing a crosslinked cable, comprising: -applying one or more layers comprising a polymer composition on a conductor, wherein at least one layer comprises one or more free radical generating agents, - crosslinking by radical reaction said at least one layer comprising said free radical generating agent(s), - cooling the obtained crosslinked cable in pressurized conditions, and - reducing or removing the content of volatile decomposition products(s), which are originating from optionally in elevated temperature, from the crosslinked cable obtained from cooling and recovery step.