trk Pa Adaptation Level

This attribute indicates the current PORS adaptation level of the parent trunk. The adaptation mechanism is controlled by Adaptation group, which is used to alleviate the high utilization condition on the parent trunk. 0 - adaptation is not active. 1 - new calls are prevented from being established over the parent trunk. 2 - some connections starting from the lowest holdingPriority attempt to reroute their paths using alternate trunks. 3 - some connections starting from the lowest holdingPriority are bumped away from the parent trunk.