In a certain network consisting of OSN 7500 at 5 remote sites, External alarms are patched at AUX board at each site. The network is monitored by a T2000 client. The AUX Board mistakenly reports Rectifier Failure alarm on T2000 client randomly even when the rectifier alarm is normal.
Rectifier Power Failure (External Alarm defined at csk-5)
1> Check the Alarm cable, It is fine.
2> Check the rectifier sensor, It reports alarms and is fine.
3> Check the Aux board, It reports other alarms fine.
4> Checked the external alarm definition on the T2000 used on site from
NE EXPLORER >> Configuration>> Environment monitoring interface >> Input Relay
and found that the rectifier alarm was defined at CSK-1 while the Door open alarm was defined at CSK-5.
5> reconfigured and corrected the alarm definition at the T2000 client with rectifier alarm at csk-1 and Door open at csk-5 and solved the issue
1 > The External alarm cable is faulty
2> Rectifier Sensor is faulty.
3> The AUX is faulty.
4> the Aux Port is faulty
There are two sorts of configuration databases , One is maintained at the NE(network equipment) side and the other is maintained at the NM (Network management) side. So maybe the alarm is patched at incorrect port.
The external alarm definitions are saved on NM level and their path name can't be queried from NE so ensure that the Definitions are consistent within the network.