The meanings of possible values of the dsx1LineStatus MIB object are:

| No alarm present
| Far end sending LOF (Yellow Alarm)
4 | Near end sending LOF
8 | Far end sending AIS
16 | Near end sending AIS
32 | Near end LOF (Red Alarm)
64 | Near end loss of signal
128 | Near end is looped
256 | E1 TS16 AIS
512 | Far End sending TS16 LOMF
1024 | Near End sending TS16 LOMF
2048 | Near End detects a test code
4096 | Any other line status

If the dsx1LoopbackState bit is set, the loopback in effect can be determined from the dsx1LoopbackConfig object.