This variable indicates the Line Status of the interface. It contains loopback, failure, re- ceived 'alarm' and transmitted 'alarm' infor- mation. The vsmPortDsx1LineStatus is a bit map represented as a sum, therefore, it can represent multiple failures (alarms) and a LoopbackState simultaneously. vsmPortDsx1NoAlarm should be set if and only if no other flag is set. If the vsmPortDsx1LoopbackState bit is set, the loopback in ef- fect can be determined from the vsmPortDsx1LoopbackConfig object. The various bit positions are: 1 vsmPortDsx1NoAlarm No Alarm Present 2 vsmPortDsx1RcvFarEndLOF Far end LOF (a.k.a., Yellow Alarm) 4 vsmPortDsx1XmtFarEndLOF Near end sending LOF Indication 8 vsmPortDsx1RcvAIS Far end sending AIS 16 vsmPortDsx1XmtAIS Near end sending AIS 32 vsmPortDsx1LossOfFrame Near end LOF (a.k.a., Red Alarm) 64 vsmPortDsx1LossOfSignal Near end Loss Of Signal 128 vsmPortDsx1LoopbackState Near end is looped 256 vsmPortDsx1T16AIS E1 TS16 AIS 512 vsmPortDsx1RcvFarEndLOMF Far End Sending TS16 LOMF 1024 vsmPortDsx1XmtFarEndLOMF Near End Sending TS16 LOMF 2048 vsmPortDsx1RcvTestCode Near End detects a test code 4096 vsmPortDsx1OtherFailure any line status not defined here For more information, please see the following CLI command: {this command is not supported by the CLI}