This attribute indicates the current state of the Remote Defect
Indication for this connection.
A value of good indicates that the connection's application is active
and no alarm has occurred.
A value of bad indicates that the connection's application is active
and an alarm has occurred.
A value of unknown indicates that the connection's application is
inactive.
A value of notApplicable occurs when the connectionPointType is
either a segmentEndPoint or a connectingPoint.