In revertive operation, the traffic channel is restored to the working transport entity, i.e., blocked on teh RPL, once the case of clearing the defect, and after the expiration of the WTR timer. In non-revertive operation, the traffic channel continues to use the RPL, even after the defect the caused the RPL to unblocked was cleared. Default=notApplicable(1). Once the Node is defined as RPL owner, this object must be equal to disable(3) or enable(3).