This attributes indicates the reason for the latest inactive A-bit
status received from the ATM VCC.
The value is notApplicable when the aBitStatusFromNetwork is
active.
The value is remoteUserSignaled if the remote FRF.5 End Point
originating the A-Bit status has detected that the virtual circuit is
down at the remote network through the LMI protocol. The remote
FRF.5 End Point must be running network site LMI protocol for this
A-Bit status reason to be sent.
The value is localLmiError if the LMI protocol is down at this Ep.
The value is localLinkDown if the physical interface is disabled at
this Ep.
The value is missingFromLmiReport if the remote FRF.5 End Point
did not provide a reason along with the inactive A-Bit status.