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.