When we reboot system, after the system restores, there are E1 PCM alarms in host and BMS every time.
You can make a local loop by self-loop cable for these E1 links. Then the physical status will be up, there will not any E1 PCM alarm generated.
When the system initializes, it will check the E1 links status, if the physical status is down, it will generate the E1 PCM alarm. Then we should check the E1 links according to the alarm. So it is not a problem. But customers do not want to see this alarms in host and BMS. How to solve it?