DS1 Line Status Alarm

Updated DS1 Line Status.

This variable indicates the Line Status of the interface.  It contains loopback, failure, received 'alarm' and transmitted 'alarms' information.

dsx1LineStatus is a bitmap represented as a sum, so it can represent multiple failures (alarms) and a LoopbackState simultaneously.
dsx1NoAlarm must be set if and only if no other flag is set.
If the dsx1loopbackState bit is set, the loopback in effect can be determined from the dsx1loopbackConfig object.  The various bit positions are:

1    dsx1NoAlarm        No alarm present

2    dsx1RcvFarEndLOF    Far end LOF (a.k.a., Yellow Alarm)

4    dsx1XmtFarEndLOF    Near end sending LOF Indication

8    dsx1RcvAIS        Far end sending AIS

16    dsx1XmtAIS        Near end sending AIS

32    dsx1LossOfFrame        Near end LOF (a.k.a., Red Alarm)

64    dsx1LossOfSignal        Near end Loss Of Signal

128    dsx1LoopbackState        Near end is looped

256    dsx1T16AIS        E1 TS16 AIS

512    dsx1RcvFarEndLOMF    Far End Sending TS16 LOMF

1024    dsx1XmtFarEndLOMF    Near End Sending TS16 LOMF

2048    dsx1RcvTestCode        Near End detects a test code

4096    dsx1OtherFailure        Any line status not defined here

8192    dsx1UnavailSigState    Near End in Unavailable Signal State

16384    dsx1NetEquipOOS        Carrier Equipment Out of Service

32768    dsx1RcvPayloadAIS    DS2 Payload AIS

65536    dsx1Ds2PerfThreshold    DS2 Performance Threshold Exceeded