Description: Type of physical interface event. SDHFramerSDst indicates that SDH Signal of the RPR physical interface degrades; SDHFramerSFst indicates that SDH Signal of the RPR physical interface fails; SDHFramerLOSst indicates that SDH Signal of the RPR physical interface loses; SDHFramerLOFst indicates that SDH framer of the RPR physical interface loses; SDHFramerRDIst indicates that remote Defect Indication ; SDHFramerAISst indicates that alarm Indication Signal; SDHFramerREIst indicates that remote ErrorIndication; Miscabling indicates that cable of the RPR physical interface is linked incorrect; Keepalive indicates that an exchange of messages allowing verification that communication between stations is not active; MateState indicates that mate cable of the RPR physical interface is linked incorrect.