This object provides additional information on the source of a link failure. This object will contain the last reason that caused the link to fail. 'unknown' : Link has failed do to an undetermined cause. 'changeOverInProgress' : Change over in progress. 'mgmtDisconnectRequest' : Management disconnect request. 'linkAlignmentLost' : Link alignment lost. 'connectionLost' : Link connection lost. 'localDisconnect' : Local Disconnect. 'remoteDisconnect' : Remote Disconnect. 'suermFailure' : Signal unit error rate monitor failure. 't1Timeout' : T1 timeout no FISU received. 't2Timeout' : T2 timeout no SIO received. 't3Timeout' : T3 timeout no SIN received. 't6Timeout' : T6 timeout excessive congestion. 't7Timeout' : T7 timeout excessive acknowledgement delay. 'provingFailure' : Link proving failure. 'protocolError-BSN' : Abnormal BSN received. 'protocolError-FIB' : Abnormal FIB received. 'protocolError-SIN' : Abnormal SIB received. 'protocolError-LSSU' : Abnormal LSSU received. 'peerNotReady' : Peer not ready. 'communicationLost' : Communication lost. 'noListenPosted' : No Listen posted. 'bufferNotAvailable' : Unable to allocate buffer. 'cardRemoved' : Link card removed. 'cardInserted' : Link card Inserted. 'falseLinkCongestion' : false link congestion. 'configDownload' : Configuration downloading. 'localInhibit' : Local request to inhibit link. 'localUninhibit' : Local request to uninhibit link. 'remoteInhibit' : Remote request to inhibit link. 'remoteUninhibit': Local request to uninhibit link. 'localBlocked' : Local Processor outage. 'localUnBlocked' : Local Processor recovery. 'remoteBlocked' : Remote Processor outage. 'remoteUnblocked': Remote Processor recovery. 'linkRestored' : Link restored. 'linkTestFailure': Signalling Link Test failure.'