This variable indicates the status of the VC. It's a bitmap represented as a sum. Therefore multiple defects can be displayed simultaneously. The value noDefect should only be set if there is no other defect. Some alarms can't occur actually. The various bit positions are: 1 vcNoDefect 2 vcAlarmAIS 4 vcAlarmLOP 8 vcAlarmRDI 16 vcAlarmUnequipped 32 vcAlarmPLM 64 vcAlarmTIM 128 vcAlarmLOM 256 vcAlarmRFI 512 vcgTxAddTimeout 1024 vcgTxAdd 2048 vcgTxRemove 4096 vcgTxDnu 8192 vcgDnuOk 16384 vcgRxAdd 32768 vcgRxRemove 65536 vcgRxFail 131072 vcgLcasCrcError 262144 vcgNonLcasSeqError