mcsMgrFrf5EpGEpDlciABitStatusToIf 1.3.6.1.4.1.562.2.4.1.122.14.3.4.10.1.1

This attribute indicates the most recent A-bit status sent to the ATM VCC. If the value is inactive, the reason for the LMI failure is given by the aBitReasonToNetwork.