Patton electronic 29XX manual E1 TS16 AIS

Access Server Administrators’ Reference Guide22 • T1/E1 Link

DESCRIPTION: This variable indicates the Line Status of the interface. It contains loopback, failure, received ‘alarm’ and transmitted ‘alarm’ information.

The dsx1LineStatus is a bit map represented as a sum, therefore, it can represent multiple failures (alarms) and a LoopbackState simultaneously

dsx1NoAlarm should 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”
::=	{ dsx1ConfigEntry 10 }

Alarms Present 257