This variable indicates the Status of the interface. It contains failure state information. The variable is a bit map represented as a sum, therefore, it can represent multiple failures simultaneously. The sonetPathNoDefect must be set if and only if no other flag is set. The various bit positions are: 1 sonetPathNoDefect 2 sonetPathSTSLOP Loss Of Pointer 4 sonetPathSTSAIS Alarm Indication Signal 8 sonetPathSTSRDI Remote Defect Indication 16 sonetPathUnequipped Signal Label Unequipped 32 sonetPathSignalLabelMismatch Signal Label Mismatch 64 sonetPathRFI Remote Failure Indication (RDI lasts for 2.5 (+-0.5) seconds) 128 sonetPathEBER Excessive Bit Error Rate 256 sonetPathSD Signal Degradation 512 sonetPathLOM Loss Of Multiframe.