| ID | Name | Meaning |
|---|---|---|
| 1 | Index No. | Number of the Ater OML |
| 2 | Subrack No. | Number of the subrack where the board is located |
| 3 | Slot No. | Number of the slot where the board is located |
| 4 | Number of the E1/T1 port | Number of the E1/T1 port |
| 5 | 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". |
When the OML on the Ater interface is disconnected, the results are as follows: The GTCS is not available for use. The configuration messages cannot be delivered to the GTCS. The GTCS status cannot be queried. The GTCS cannot be maintained. If other transmission links are normal while the OML is disconnected, the services are not affected.
In 1+1 backup mode, when the OML is disconnected, the system automatically checks whether the disconnected link is the primary link. If the primary link is disconnected, the system automatically switches to the secondary link. If the secondary link is disconnected, the alarm is not handled.
20081 Loss of E1/T1 Signals (LOS)
20084 E1/T1 Alarm Indication Signal (AIS)
20083 Remote E1/T1 Alarm (RAI)
20221 Loss of Clock on the Optical Port (RLOC)
20222 Loss of Signals on the Optical Port (RLOS)
20223 Loss of Received Signal Frames on the Optical Port (RLOF)
20224 Out-of-Synchronization of Received Signal Frames on the Optical Port (ROOF)
20226 Regenerator Section Signal Failure (RSF)
20227 Regenerator Section Signal Deteriorated (RSD)
20228 Multiplex Section Alarm Indication Signal (MAIS)
20229 Multiplex Section Remote Defect Indication (MRDI)
20230 Loopback on the Optical Port
20231 Administration Unit Alarm Indication Signal (AUAIS)
20232 Loss of Administration Unit Pointer (AULOP)
20233 Service Unequipped on the High-Order Path of the Optical Port (HPUNEQ)
20235 High-Order Path Signal Label Byte Mismatch (HPSLM)
20236 High-Order Path Signal Failure (HPSF)
20237 High-Order Path Signal Deteriorated (HPSD)
20238 Remote Defect Indication on the High-Order Path of the Optical Port (HPRDI)
20239 Loss of Tributary Unit Multi-frames (TULOM)
20240 Tributary Unit Alarm Indication Signal (TUAIS)
20241 Loss of Tributary Unit Pointer (TULOP)
20242 Service Unequipped on the Lower-Order Path of the Optical Port (LPUNEQ)
20244 Signal Flag Mismatch on the Low-Order Path of the Optical Port (LPSLM)
20245 Low-Order Path Remote Failure Indicaton (LPRFI)
20246 Low-Order Path Remote Defect Indication (LPRDI)
20247 Tributary Unit Type Mismatch (TUSIZEERR)
20248 Loss of Tributary Signals (LOS)
20249 Tributary Alarm Indication Signal (AIS)
20250 Loss of Tributary Frames (LOF)
20251 Remote Alarm Indication over the Tributary (RAI)
Y => The alarm handling is complete.
N => Go to 2.
Y => Tighten the connector. The alarm handling is complete.
N => The connector is normal. Go to 3.
Y => Replace the physical line. The alarm handling is complete.
N => The physical line is normal. Go to 4.
Y => Go to 5.
N => Replace the boards. The alarm handling is complete.
Y => Tighten the connector. The alarm handling is complete.
N => The connector is normal. Go to 6.
Y => Replace the physical line. The alarm handling is complete.
N => The physical line is normal. Go to 7.
Y => Go to 8.
N => Replace the boards. The alarm handling is complete.
Y => Tighten the connectors. The alarm handling is complete.
N => The connectors are normal. Go to 9.
Y => Request the maintenance personnel to solve the problem. The alarm handling is complete.