20353 TDM Interface Unit Failure Alarm

Description

TDM interface unit logic chip is abnormal.

Alarm ID	Alarm Severity	Alarm Type
20353	Major	Fault

ID	Name	Meaning
1	Subrack No.	Subrack No.
2	Slot No.	Slot No.
3	Cpu No.	CPU No.
4	HW and CORE Interface Status Fault	The HW and CORE interface status.
5	POS Interface Status Fault	The POS Interface Status.
6	MII Interface Status Fault	The MII Interface Status.
7	Alarm Attribute	0=Normal, Alarms period are longer than the Transient Threshold. 1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN".

The service on this board might be interrupted.

Handling of the active board in the active/standby operation mode: Perform the switchover if the standby is ready for the operation.
Handling of the standby board in the active/standby operation mode: None.
Handling of the board in the Independent operation mode: None.

The hardware chip is faulty.

Check whether the board is in Independent operation mode.
Y => The board is in independent operation mode. Go to 5.

N => The board is in active/standby operation mode. Go to 2.
Check whether the active board reports the alarm.
Y => The active board reports the alarm. Go to 3.

N => The standby board reports the alarm. Go to 4.
If the alarm is reported by the active board, a switchover between the active and standby boards will be automatically performed. If the standby board has a same- or higher-level alarm, the switchover fails, resulting in the persistence of the alarm within the active board. Clear the alarm of the standby board by adhering to relevant alarm-handling procedures, and then check whether the switchover between the active and standby boards is performed.
Y => The switchover succeeds. Go to 4.

N => The switchover fails. Please contact Huawei Customer Service Center.
Replace the standby board and wait until the board is successfully restarted. Check whether the alarm is cleared.
Y => The alarm is cleared. The alarm handling is complete.

N => The alarm persists. Please contact Huawei Customer Service Center.
Replace the board and wait until the board is successfully restarted. Check whether the alarm is cleared.
Y => The alarm is cleared. The alarm handling is complete.

N => The alarm persists. Please contact Huawei Customer Service Center.