03-chapter 3 alarm handling

OptiX OSN 3500Maintenance Manual - Alarm and Performance Event Contents

Contents

3 Alarm Processing 3-1

A_LOC 3-1

APS_MANUAL_STOP 3-2

ALM_NOLSRPARAFILE 3-2

ALM_HANGUP 3-3

APS_FAIL 3-3

APS_INDI 3-4

AU_AIS 3-4

AU_LOP 3-6

B1_EXC 3-7

B1_SD 3-9

B2_OVER 3-10

B2_SD 3-11

B3_OVER 3-12

B3_SD 3-13

BD_STATUS 3-14

BIP_OVER 3-14

BIP_SD 3-15

BUS_ERR 3-16

BUS_LOC 3-17

C2_PDI 3-17

C2_VCAIS 3-17

C4_R_LAISD 3-18

C4_T_LAISD 3-19

CLK_NO_TRACE_MODE 3-19

COMMUN_FAIL 3-20

COOL_CUR_OVER 3-20

Huawei Technologies Proprietary

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DBMS_ERROR 3-21

DBMS_PROTECT_MODE 3-21

DOWN_E1_AIS 3-22

E1_LOC 3-22

EXT_LOS 3-23

EXT_SYNC_LOS 3-24

FAN_FAIL 3-24

FPGA_ABN 3-25

FSELECT_STG 3-25

HARD_BAD 3-25

HP_LOM 3-26

HP_RDI 3-27

HP_REI 3-27

HP_SLM 3-28

HP_TIM 3-29

HP_UNEQ 3-30

IN_PWR_ABN 3-31

IN_PWR_FAIL 3-32

IN_PWR_HIGH 3-32

IN_PWR_LOW 3-33

J0_MM 3-33

K1_K2_M 3-33

K2_M 3-34

LASER_SHUT 3-34

LOCK_CUR_FAIL 3-35

LOOP_ALM 3-35

LP_R_FIFO 3-35

LP_RDI 3-36

LP_REI 3-36

LP_RFI 3-37

LP_SIZE_ERR 3-37

LP_SLM 3-38

LP_T_FIFO 3-38

LP_TIM 3-39

LP_UNEQ 3-39

LSR_COOL_ALM 3-40

LSR_NO_FITED 3-40


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LSR_WILL_DIE 3-41

LTI 3-41

MS_AIS 3-43

MS_RDI 3-44

MS_REI 3-45

NE_SF_LOST 3-45

NESTATE_INSTALL 3-46

NO_BD_SOFT 3-46

NO_BD_PARA 3-47

OH_LOOP 3-47

OOL 3-47

OTH_HARD_FAIL 3-48

OUT_PWR_ABN 3-48

P_AIS 3-49

P_LOS 3-50

PLL_FAIL 3-51

POWER_ABNORMAL 3-52

POWER_FAIL 3-52

PS 3-53

PUM_BCM_ALM 3-53

PUM_COOL_ALARM 3-53

R_LOC 3-54

R_LOF 3-54

R_LOS 3-56

R_OOF 3-57

RELAY_FAIL 3-58

S1_SYN_CHANGE 3-58

SECU_ALM 3-59

ALM_SUBCARD_ABN 3-60

SYN_BAD 3-60

SYNC_C_LOS 3-61

SYNC_F_M_SWITCH 3-62

SYNC_LOCKOFF 3-62

T_ALOS 3-63

T_LOSEX 3-64

TC_DEG 3-64

TC_EXC 3-65


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TC_INCAIS 3-66

TC_LTC 3-67

TC_ODI 3-68

TC_OEI 3-69

TC_RDI 3-70

TC_REI 3-70

TC_TIM 3-71

TC_UNEQ 3-72

TEM_HA 3-73

TEM_LA 3-74

TEMP_OVER 3-75

TPS_ALM 3-76

TR_LOC 3-76

TF 3-77

TU_AIS 3-78

TU_LOP 3-79

UP_E1_AIS 3-80

W_OFFLINE 3-80

W_R_FAIL 3-81

WORK_CUR_OVER 3-82

WRG_BD_TYPE 3-82


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OptiX OSN 3500Maintenance Manual - Alarm and Performance Event 3 Alarm Processing

3 Alarm Processing

A_LOC

1. Introduction

The A_LOC alarm indicates “add to bus - loss of clock”, which is a major alarm. Such boards as PL3, PD3, PQ1 and PQM may report this alarm.

2. Alarm Causes

The GXCS/EXCS/UXCS/XCE board fails.

The GXCS/EXCS/UXCS/XCE board is not in position.

3. Handling Procedure

Warning:

If no hot backup is performed for the GXCS/EXCS/UXCS/XCE board, resetting/replacing this board may interrupt the service. It is a dangerous operation.

Step Action

1 Reset or insert/remove the GXCS/EXCS/UXCS/XCE board and then view whether the alarm is removed.

2 Replace the GXCS/EXCS/UXCS/XCE board and then view whether the alarm is removed.

3 Reset or insert/remove the tributary board and then view whether the alarm is removed.

4 Replace the tributary board and then view whether the alarm is removed.


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APS_MANUAL_STOP

1. Introduction

The APS_MANUAL_STOP alarm indicates “APS manual stop”, which is a minor alarm. The SCC board may report this alarm.

2. Alarm Cause

The multiplex section protocol is stopped.


Step Action

1 Start the multiplex section protocol.

ALM_NOLSRPARAFILE

1. Introduction

The ALM_NOLSRPARAFILE alarm indicates “EEPROM empty”, which is a major alarm. Such boards as SEP1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Cause

When an optical module with EEPROM is used, if it is found that there is no laser parameter file in the EEPROM of the optical module after the board is started, this alarm will be raised.


Warning:

To replace the line board, you need to keep the transmission distance of the line board consistent with that of the original one.

Step Action

1 Re-send the laser parameter and then view whether the alarm is removed.

2 Replace the faulty board.


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ALM_HANGUP

1. Introduction

The ALM_HANGUP alarm indicates “Telephone hang up for too long time”, which is a warning. The AUX board may report this alarm.

2. Alarm Cause

The orderwire phone is in an incorrect state.


Step

Action

1 Re-set the state of the orderwire phone.

APS_FAIL

1. Introduction

The APS_FAIL alarm indicates “APS protection switching failed”, which is a warning. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

Multiplex section protection switching fails.

The node information of multiplex section (MS) is set incorrectly.

The node information of multiplex section is lost.


Step Action

1 Check whether the MS node information of the entire network is set correctly. After modifying the incorrect configuration, view whether the alarm is removed.

2 Check whether the MS protocol of the entire network is normal. After stopping and restarting the protocol, view whether the alarm is removed.


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APS_INDI

1. Introduction

The APS_INDI alarm indicates “APS protection switching indication”, which is a major alarm. The particular board and port are reported when the APS_INDI alarm occurs. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

MSP switching happens.


Step Action

1 For a ring MSP network, this alarm indicates that MSP occurs. After removing the MSP fault, view whether the alarm is removed.

2 For a non-ring MSP network, this alarm indicates that the APS protocol is started abnormally. Check whether the MS node parameter is set correctly, and after modifying the incorrect configuration, view whether the alarm is removed.

AU_AIS

1. Introduction

The AU_AIS alarm indicates “AU alarm indication”, which is a major alarm. Such boards as ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The opposite station sends AU_AIS.

The transmitter of the opposite station fails.

The receiver of the local station fails.


Warning:



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF, B1_EXC or B2_OVER, from the NM. Handle these higher-level alarms first


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Step Action

and then view whether the alarm is removed.

2 Check whether the NE is in the protection switching state. After the switching fault is removed, view whether the alarm is removed.

3 Check whether the service configuration of the NE is correct. After modifying the incorrect configuration, view whether the alarm is removed.

4 Use the alarm analysis and loopback methods to locate the NE where a fault occurs.

5 Replace the alarm reporting line board of the faulty NE and then view whether the alarm is removed.

6 Replace the GXCS/EXCS/UXCS/XCE board of the faulty NE and then view whether the alarm is removed.

7 Replace the line board of the opposite station and then view whether the alarm is removed.

8 Replace the GXCS/EXCS/UXCS/XCE board of the opposite station and then view whether the alarm is removed.

4. Related information

The GXCS/EXCS/UXCS/XCE board will not fail unless all VC-4s of the line board report the AU_AIS alarm.


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AU_LOP

1. Introduction

The AU_LOP alarm indicates “AU Loss of Pointer”, which is a major alarm. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes


Service configuration error at the opposite station.

Excessive bit errors are received by the local station.


Warning:



Step Action








For the 140 Mbit/s service, a board reports this alarm if the service is not accessed correctly. The 155M line board reports this alarm due to a configuration error. The 622 Mbit/s, 2.5 Gbit/s or 10 Gbit/s line board reports this alarm due to a timing unit fault.


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B1_EXC

1. Introduction

The B1_EXC alarm indicates “Regenerator section B1 excessive bit error indication”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The received signal attenuation is excessive.

The fiber end is not clean.

The connectors are connected incorrectly.




Warning:



To clean a line board or a fiber end, please use special tools.

Step Action

1 View whether there are any higher-level alarms, such as R_LOS and R_LOF, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 Check whether the received optical power of the alarming board is normal. If the received optical power is normal, turn to step 9..

3 Clean the tail fiber connector and the receiving optical interface of line board, and then check if the alarm is removed.

4 Check if the connection between local flange and optical attenuator is correct, and if the attenuation value is too high. If there is a problem, clear it and then view whether the alarm is removed.

5 Check the transmitted optical power of the opposite station is normal. If not, replace the line board.

6 If the transmitted optical power is normal, clean the tail fiber connector of the opposite station. Then view whether the alarm is removed.

7 Check if the connection between local flange and optical attenuator of the opposite station is correct, and if the attenuation value is too high. If there is


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Step Action

a problem, clear it and then view whether the alarm is removed

8 Check the fiber. If there is a problem, clean it and then view whether the alarm is removed.

9 Replace the line board with the alarm at the local station and then view whether the alarm is removed.

10 Replace the GXCS/EXCS/UXCS/XCE board of the local station and then view whether the alarm is removed.




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B1_SD

1. Introduction

The B1_SD alarm indicates “Regenerator section B1 signal degraded”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes


The fiber end is dirty or the connector is connected incorrectly.




Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF or B1_EXC from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 Check whether the received optical power of the alarming board is normal. If the received optical power is normal, turn to step 9.





7 Check if the connection between local flange and optical attenuator of the opposite station is correct, and if the attenuation value is too high. If there is a problem, clear it and then view whether the alarm is removed







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B2_OVER

1. Introduction

The B2_OVER alarm indicates “Indication of excessive B2 error in the multiplex section”, which is a major alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes



The fiber connector is connected incorrectly.




Warning:



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF or B1_EXC, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 Check whether the working temperature of the equipment is too high. After lowering the temperature, view whether the alarm is removed.






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If only the B2_OVER alarm, without the B1_EXC alarm, is reported, it is usually a board fault. Replace the faulty board.

B2_SD

1. Introduction

The B2_SD alarm indicates “Signal deterioration indication”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes







Warning:



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF or B2_OVER from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.







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B3_OVER

1. Introduction

The B3_OVER alarm indicates “High order path (B3) excessive errors”, which is a major alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, PL3 and PD3 may report this alarm.

2. Alarm Causes







Warning:



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF, B1_EXC or B2_OVER, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.







If only the B3_OVER alarm, without the B1_EXC or B2_OVER alarm, is reported, it


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is usually a board fault. Replace the faulty board.

B3_SD

1. Introduction

The B3_SD alarm indicates “High order path (B3) signal degraded”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, PL3 and PD3 may report this alarm.

2. Alarm Causes







Warning:



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF, B1_EXC, B2_OVER or B3_OVER, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.







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BD_STATUS

1. Introduction

The BD_STATUS alarm indicates “Board not in position alarm”, which is a major alarm. Such boards as EFS0, EFS4, EGS2, EGT2, EMR0, ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, PQ1, PQM, PD3, PL3, SCC, AUX, FAN, BP2, BPA, COA, LWX, GXCS, EXCS, UXCS and XCE may report this alarm.

2. Alarm Causes

The board is not inserted.

The board socket is loose.

The mailbox fails.


Step Action

1 Check whether the corresponding board is inserted.

2 Check whether the board and the backplane have good contact. After inserting the board, view whether the alarm is removed.

3 Replace the alarm reporting board and then view whether the alarm is removed.

4 Replace the backplane of the local station and then view whether the alarm is removed.


If several in-position boards of an NE report this alarm, the fault may occur in the mailbox of a certain board, which can interfere with the mailboxes of other boards. You can pull out all the boards and then insert them again one by one until you find the faulty one. Replace the faulty board.

BIP_OVER

1. Introduction

The BIP_OVER alarm indicates “BIP excessive errors”, which is a minor alarm. Such boards as EFS0, EFS4, EGS2, PQ1 and PQM may report this alarm.

2. Alarm Cause

The BIP2 bit errors are excessive.


Step Action

1 Reset or insert/remove the alarm reporting board and then view whether the alarm is removed.



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BIP_SD

1. Introduction

The BIP_SD alarm indicates “BIP signal degraded”, which is a minor alarm. Such boards as EFS0, EFS4, EGS2, PQ1 and PQM may report this alarm.

2. Alarm Cause

The BIP2 bit errors are excessive.


Step Action




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BUS_ERR

1. Introduction

The BUS_ERR alarm indicates “Bus error”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

The chip of the cross-connect board is damaged.

The backplane bus between the line board and the cross-connect board is damaged.

The backplane bus between the tributary board and the cross-connect board is damaged.


Warning:


Replacing the backplane may interrupt all the services of the local station. It is a dangerous operation.

Step Action



3 Replace the backplane and then view whether the alarm is removed.


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BUS_LOC

1. Introduction

The BUS_LOC alarm indicates “Bus dropping loss of clock”, which is a major alarm. Such boards as PQ1 and PQM may report this alarm.

2. Alarm Causes

Service configuration error.

GXCS/EXCS/UXCS/XCE board fault.


Warning:


Step Action


2 Reset or insert/remove the GXCS/EXCS/UXCS/XCE board to view whether the alarm is removed.

3 Replace the GXCS/EXCS/UXCS/XCE board to view whether the alarm is removed.

C2_PDI

1. Introduction

The C2_PDI alarm indicates “C2 byte defect indication”, which is a minor alarm. Such boards as SEP1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Cause

Service configuration error. The board detects that the received C2 byte is between “0XE1” and “0XFC”.


Step Action



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C2_VCAIS

1. Introduction

The C2_VCAIS alarm indicates “C2 byte alarm indication”, which is a major alarm. Such boards as SEP1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

Service configuration error. This alarm is raised when the C2 byte received by the board is “0XFF”.


Step Action


C4_R_LAISD

1. Introduction

The C4_R_LAISD alarm indicates “Dropping E4 signal AIS”, which is a major alarm. The SPQ4 board may report this alarm.

2. Alarm Cause

It is caused by a higher order alarm, such as loss of pointer, loss of transmitted clock and transmission FIFO overflow.


Step Action

1 Check whether there are any higher-level alarms from the NM. After handling these higher-level alarms, view whether the alarm is removed

2 Check whether the service configuration is correct. After modifying the incorrect configuration, view whether the alarm is removed.


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C4_T_LAISD

1. Introduction

The C4_T_LAISD alarm indicates “Adding E4 signal AIS”, which is a minor alarm. The SPQ4 board may report this alarm.

2. Alarm Causes

The signal of E4 input port is lost.

No E4 signal is accessed.

The cable is faulty.


Step Action

1 Perform self-loop for the service of the corresponding path (hardware inloop) at the DDF. If the alarm is removed, it is the equipment of the opposite end that fails. After removing the fault, view whether the alarm is removed.

2 In the self-loop operation in the previous step, if the alarm is not removed, another self-loop (hardware inloop) is required for this path at the interface board. If the alarm is removed, the fault lies in signal cable connection. After removing the fault, see whether the alarm disappears.

3 In the interface board self-loop operation in the previous step, if the alarm is not removed, inloop setting is required for this path on the NM. If the alarm is removed, it is the interface board that fails. After inserting/removing or replacing the interface board, see whether the alarm disappears.

4 In the inloop setting for the alarm reporting path in the previous step, if the alarm is not removed, it is the board that fails. After replacing the board, check whether the alarm is removed.

CLK_NO_TRACE_MODE

1. Introduction

The CLK_NO_TRACE_MODE alarm indicates “Clock entering into non-tracing running mode”, which is a minor alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

The clock working mode changes from locked into holdover or free-run.


Step Action

1 Usually, this alarm appears with the loss-of-clock alarm. After removing the clock fault, the alarm is removed.


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COMMUN_FAIL

1. Introduction

The COMMUN_FAIL alarm indicates “Board serial port communication failure”, which is a major alarm. Such boards as ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SPQ4, SEP1, SEP, SCC, GXCS, EXCS, UXCS, XCE, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

Board serial port communication fails.


Step Action

1 If only one board reports this alarm, replace the alarm reporting board and then view whether the alarm is removed.

2 If several boards report this alarm at the same time, pull out them one by one and then view whether the alarm is removed. If the alarm disappears, the fault lies in the board pulled out. Replace the faulty board to view whether the alarm is removed.

3 If the alarm still appears after the board is replaced, replace the board slot and check whether the alarm is removed.

COOL_CUR_OVER

1. Introduction

The COOL_CUR_OVER alarm indicates “Cooling current override”, which is a major alarm. The COA board may report this alarm.

2. Alarm Cause

EDFA module fault.


Step Action



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DBMS_ERROR

1. Introduction

The DBMS_ERROR alarm indicates “Database error”, which is a major alarm. The SCC board may report this alarm.

2. Alarm Causes

The database operation fails.

The database data is damaged.

Board fault.


Step Action


DBMS_PROTECT_MODE

1. Introduction

The DBMS_PROTECT_MODE alarm indicates “Database in protection mode”, which is a critical alarm. The SCC board may report this alarm.

2. Alarm Cause

The database is in protection mode.


Step Action



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DOWN_E1_AIS

1. Introduction

The DOWN_E1_AIS alarm indicates “E1 down signal alarm indication”, which is a minor alarm. The PQ1 and PQM boards may report this alarm.

2. Alarm Cause

The E1 signal is all "1”s.


Step Action

1 View whether there are any of the MA_AIS, AU_AIS and TU_AIS alarms from the NM. After removing these alarms, view whether the alarm is removed.


3 Replace the GXCS/EXCS/UXCS/XCE board and check whether the alarm is removed.

E1_LOC

1. Introduction

The E1_LOC alarm indicates “Loss of upstream E1 clock”, which is a minor alarm. The PQ1 and PQM boards may report this alarm.

2. Alarm Causes


GXCS/EXCS/UXCS/XCE board fault.


Step Action

1 View whether there are any of the AU_AIS, AU_LOP, TU_AIS and TU_LOP alarms from the NM. After removing these alarms, view whether the alarm is removed.


3 Replace the GXCS/EXCS/UXCS/XCE board and check whether the alarm is removed.


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EXT_LOS

1. Introduction

The EXT_LOS alarm indicates “External loss of signal”, which is a minor alarm. The SPQ4 board may report this alarm.

2. Alarm Causes

Non-E4 signals are input.

Board fault.


Step Action

1 Confirm the board and path number where the alarm is reported.

2 Perform hardware inloop over this path on the DDF.If the alarm disappears, the problem lies in the accessed signal. Check whether the accessed signal is the E4 one.If the alarm still appears, the problem may lie in the trunk cable or the board.

3 Perform hardware inloop over this path at the interface board.If the alarm disappears, it is the signal trunk cable fault. Check whether the connectors of the trunk cable are in good contact and whether the trunk cable is broken.If the alarm still appears, the fault may lie in the interface board or the board.

4 Perform inloop over this path on the NM.If the alarm disappears, it is the interface board fault. Insert/remove the interface board again. If the alarm still appears, replace the interface board.After inloop is set on the NM, if the alarm does not disappear yet, the fault may lie in the board.



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EXT_SYNC_LOS

1. Introduction

The EXT_SYNC_LOS alarm indicates “Loss of external synchronous source”, which is a minor alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

The physical interface signal of the external clock source is lost.


Step Action

1 Check whether the equipment which provides the external clock works efficiently.

2 Check whether the external clock cable is connected correctly and whether the connectors are in good contact. After the correction, view whether the alarm is removed.

FAN_FAIL

1. Introduction

The FAN_FAIL alarm indicates “Fan failed”, which is a major alarm. The FAN board may report this alarm.

2. Alarm Causes

The fan is not turned on.

The fan fails.


Step Action

1 Check whether the fan box is properly in position. Pull it out and insert it again.

2 Replace the faulty fan box.


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FPGA_ABN

1. Introduction

The FPGA_ABN alarm indicates “Writing/Reading wrong”, which is a major alarm. Such boards as EFS0, EFS4, EGS2, EGT2, LWX, AUX, BP2, BPA, COA, PQ1, PQM, PL3, PD3, GXCS, EXCS, UXCS and XCE may report this alarm.

2. Alarm Causes

The FPGA data loaded in the XILINX chip are the data in the FLASH backup area.

No FPGA data are in the main area or the data are wrong.


Step Action


FSELECT_STG

1. Introduction

The FSELECT_STG alarm indicates “Forcibly select clock unit”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, and SPQ4 may report this alarm.

2. Alarm Cause

Select a clock unit forcibly by commands.


Step Action

1 Cancel the forced command.

HARD_BAD

1. Introduction

The HARD_BAD alarm indicates “Hardware fails”, which is a critical alarm. The ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, SCC, GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

Hardware fault.


Step Action



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HP_LOM

1. Introduction

The HP_LOM alarm indicates “Higher order Path Loss of Multiframe”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes


The H4 byte is lost or incorrect.


Warning:



Step Action

1 View the alarm reporting board.


3 Check whether the signal structure of the line board is set correctly. After setting it correctly, view whether the alarm is removed.

4 Reset/Replace the line board with the alarm at the local station and then view whether the alarm is removed.

5 Reset/replace the GXCS/EXCS/UXCS/XCE board of the local station and then view whether the alarm is removed.


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HP_RDI

1. Introduction

The HP_RDI alarm indicates “Higher order path remote defect indication”, which is a minor alarm. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The opposite station receives such alarms as AU_AIS and AU_LOP.

The receiver at the opposite station fails.

The transmitter of the local station fails.


Step Action

1 It is an associate alarm. The corresponding path of the line board of the opposite station reports the AU_AIS or AU_LOP alarm, and returns an HP_RDI alarm to the local station. After removing the AU_AIS or AU_LOP alarm, this alarm will disappear automatically.

HP_REI

1. Introduction

The HP_REI alarm indicates “Higher order path remote error indication”, which is a warning. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Cause

The opposite station receives B3 bit errors.


Step Action

1 It is an associate alarm. The line board of the opposite station detects the B3 error, or reports the B1_EXC, B2_OVER or B3_OVER alarm, and returns an HP_REI alarm to the local station. After removing the B3 error, this alarm will disappear automatically.


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HP_SLM

1. Introduction

The HP_SLM alarm indicates “Higher order path signal identification mismatch”, which is a minor alarm. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The signal label to be received at the local station is inconsistent with that to be transmitted from the opposite station.



Warning:


Step Action

1 Check whether the C2 byte to be sent by the line board of the opposite station is consistent with that to be received by the line board of the local station. After making them consistent, view whether the alarm is removed.


3 Replace the line board of the local station and then view whether the alarm is removed.



28


HP_TIM

1. Introduction

The HP_TIM alarm indicates “Higher order path tracking identification mismatch”, which is a minor alarm. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The path trace byte to be received at this station is inconsistent with that to be transmitted from the opposite station.



Warning:


Step Action

1 Check whether the J1 byte to be sent by the line board of the opposite station is consistent with that to be received by the line board of the local station. After making them consistent, view whether the alarm is removed.





29


HP_UNEQ

1. Introduction

The HP_UNEQ alarm indicates “No loading error in the higher order path”, which is a minor alarm. Such boards as ADL4, ADQ1, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Cause

The C2 byte is 0.


Warning:


Step Action

1 Check whether the C2 byte is configured as 0. After the modification, view whether the alarm is removed.




30


IN_PWR_ABN

1. Introduction

The IN_PWR_ABN alarm indicates “Input power abnormal”, which is a major alarm. Such boards as ADL4, ADQ1, BA2, BPA, COA, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

The fiber is curved excessively.

The fiber end is not clean or the connector is connected incorrectly.

The detector or amplifying circuit fails.


Step

Action

1 Check whether the bending radius of the fiber is less than 6cm. Lay the fiber once again and see whether the alarm disappears.

2 Clean the fiber connector of the local station and the receiving optical interface of the line board and then view whether the alarm is removed.

3 Check whether the ring flange of the local station is connected correctly. After using the ring flange correctly, view whether the alarm is removed.

4 Check whether the transmitted optical power of the opposite station is normal. If it is normal, the fault lies in the receiving module of an optical board of the local station. Replace the optical board.

5 If the transmitted optical power is abnormal, clean the fiber connector of the opposite station and then view whether the alarm is removed.

6 Check whether the ring flange of the opposite station is connected correctly. After using the ring flange correctly, view whether the alarm is removed.

7 If the transmitted optical power of the opposite station remains abnormal, the fault lies in the transmitting optical module of an optical board of the opposite station. Replace the board.


31


IN_PWR_FAIL

1. Introduction

The IN_PWR_FAIL alarm indicates “Input power failed”, which is a critical alarm. Such board as COA may report this alarm.

2. Alarm Causes

Fiber cut.

The detector or amplifying circuit fails.


Step

Action

1 Use OTDR to test whether the optical cable is broken.

2 Clean the fiber connector of the local station and the receiving optical interface of the line board and then view whether the alarm is removed.

3 Check whether the ring flange of the local station is connected correctly. After using the ring flange correctly, view whether the alarm is removed.

4 Check whether the transmitted optical power of the opposite station is normal. If it is normal, the fault lies in the receiving module of an optical board of the local station. Replace the optical board.

5 If the transmitted optical power is abnormal, clean the fiber connector of the opposite station and see whether the alarm is removed.

6 Check whether the ring flange of the opposite station is connected correctly. After using the ring flange correctly, see whether the alarm is removed.

7 If the transmitted optical power of the opposite station remains abnormal, the fault lies in the transmitting optical module of an optical board of the opposite station. Replace the board.

IN_PWR_HIGH

1. Introduction

The IN_PWR_HIGH alarm indicates “Input power is too high”, which is a critical alarm. The BP2, BPA and LWX boards may report this alarm.

2. Alarm Cause

The input optical power is too high.


Step Action

1 Add an optical attenuator to the optical path.


32


IN_PWR_LOW

1. Introduction

The IN_PWR_LOW alarm indicates “Input power is too low”, which is a critical alarm. The BP2, BPA and LWX boards may report this alarm.

2. Alarm Cause

The input optical power is too low.


Step Action

1 The problem usually lies in the aging of optical module. Replace the faulty board.

J0_MM

1. Introduction

The J0_MM alarm indicates “Trace identifier mismatch”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Cause

J0 byte mismatch.


Step Action

1 Configure the J0 byte for the board same as that for the board at the other side.

K1_K2_M

1. Introduction

The K1_K2_M alarm indicates “K1K2 mismatch”, which is a minor alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

The received K1 and K2 bytes mismatch the transmitted ones.

Equipment fault.


Step Action

1 Replace the transmitting optical board of the opposite station and then view whether the alarm is removed.

2 Replace the optical board of the local station and then view whether the alarm is removed.


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K2_M

1. Introduction

The K2_M alarm indicates “K2 mismatch”, which is a minor alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

The received K2 byte mismatches the transmitted one.

Equipment fault.


Step Action

1 Replace the transmitting optical board of the opposite station and then view whether the alarm is removed.

2 Replace the optical board of the local station and then view whether the alarm is removed.

LASER_SHUT

1. Introduction

The LASER_SHUT alarm indicates “Laser shut down”, which is a major alarm. Such boards as ADL4, ADQ1, LWX, SEP1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Cause

The user has executed the operation of laser shutdown through the NM or the command line.


Step Action

1 After removing the laser shutdown setting, this alarm will disappear automatically.


34


LOCK_CUR_FAIL

1. Introduction

The LOCK_CUR_FAIL alarm indicates “Working current lock failed”, which is a minor alarm. Such boards as BP2, BPA and COA may report this alarm.

2. Alarm Causes

EDFA module fault.

A fault occurs in the external bias current or the drive current.


Step Action

1 Reset or insert/remove the faulty board and then view whether the alarm is removed.


LOOP_ALM

1. Introduction

The LOOP_ALM alarm indicates “Loop alarm”, which is a minor alarm. Such boards as ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

Inloop or outloop occurs over the line board or the tributary board.


Step Action

1 After removing the loopback setting, this alarm will disappear automatically.

LP_R_FIFO

1. Introduction

The LP_R_FIFO alarm indicates “FIFO overflow on the receiving side of the lower order path”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause



Step Action

1 Check the service configuration. After correcting the mistake, re-send the


35


configuration.

LP_RDI

1. Introduction

The LP_RDI alarm indicates “Lower order path remote defect indication”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes

The opposite station receives such alarms as TU_AIS and TU_LOP.




Step Action

1 It is an associate alarm. The corresponding path of the line board of the opposite station reports the TU_AIS or TU_LOP alarm, and returns an LP_RDI alarm to the local station. After removing the TU_AIS or TU_LOP alarm, this alarm will disappear automatically.

LP_REI

1. Introduction

The LP_REI alarm indicates “Lower order path remote error indication”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

The lower order path at the opposite station receives bit errors.


Step Action

1 It is an associate alarm. The tributary board of the opposite station detects errors, and returns an HP_REI alarm to the local station. After removing the errors, this alarm will disappear automatically.


36


LP_RFI

1. Introduction

The LP_RFI alarm indicates “Lower order path remote fault indication”, which is a minor alarm. The EFS0, EFS4, EGS2, PQ1 or PQM boards may report this alarm.

2. Alarm Cause

The receiver of the lower order path at the opposite station fails.


Step Action

1 It is an associate alarm. The tributary board of the opposite station detects errors, and returns an HP_REI alarm to the local station. After removing the errors, this alarm will disappear automatically.

LP_SIZE_ERR

1. Introduction

The LP_SIZE_ER alarm indicates “Lower order path V5 identification mismatch”, which is a minor alarm. The PQ1 and PQM boards may report this alarm.

2. Alarm Cause

The mapping structure is incorrectly configured.


Step Action



37


LP_SLM

1. Introduction

The LP_SLM alarm indicates “Lower order path signal identification mismatch”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes

The lower order path signal label of the local station is not consistent with that of the opposite station.



Step Action

1 Check whether the signal label byte of the corresponding lower order path in the tributary board of the opposite station is consistent with that of the local station. After making the bytes consistent, view whether the alarm is removed.


3 Replace the tributary board of the local station and then view whether the alarm is removed.

4 Replace the tributary board of the opposite station and then view whether the alarm is removed.

LP_T_FIFO

1. Introduction

The LP_T_FIFO alarm indicates “FIFO overflow on the transmission side of the lower order path”, which is a minor alarm. The PD3, PL3, PQ1 or PQM boards may report this alarm.

2. Alarm Cause

The frequency deviation of the PDH input signal is excessively high.


Step Action



38


LP_TIM

1. Introduction

The LP_TIM alarm indicates “Lower order path tracking identification mismatch”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes

The lower order path trace identifier of the local station is inconsistent with that of the opposite station.



Step Action

1 Check whether the trace identifier of the corresponding lower order path in the tributary board of the opposite station is consistent with that of the local station. After making the identifiers consistent, view whether the alarm is removed.

2 Check whether the service configuration is correct. After modifying the incorrect configuration, see whether the alarm is removed.

3 Replace the tributary board of the local station and then view whether the alarm is removed.

4 Replace the tributary board of the opposite station and then view whether the alarm is removed.

LP_UNEQ

1. Introduction

The LP_UNEQ alarm indicates “No payload indication of the lower order path”, which is a minor alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

No E1 service is accessed.


Step

Action


2 Check whether the attribute configuration of the tributary board is correct. After modifying the incorrect configuration, view whether the alarm is removed.


39


LSR_COOL_ALM

1. Introduction

The LSR_COOL_ALM alarm indicates “Cooling current of the laser over threshold”, which is a major alarm. Such boards as LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

A fault occurs in the cooling loop.

The ambient temperature exceeds the threshold.


Step Action

1 Check whether the ambient temperature is too high. After lowering the temperature to a proper range, view whether the alarm is removed.


LSR_NO_FITED

1. Introduction

The LSR_NO_FITED alarm indicates “Laser is not installed”, which is a critical alarm. Such boards as ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Cause

No laser is installed.


Step Action

1 Check whether the ambient temperature is too high. After lowering the temperature to a proper range, view whether the alarm is removed.



40


LSR_WILL_DIE

1. Introduction

The LSR_WILL_DIE alarm indicates “Laser will be out of work”, which is a critical alarm. Such boards as ADL4, ADQ1, LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Cause

The laser is aged.


Step Action


LTI

1. Introduction

The LTI alarm indicates “Loss of synchronous source”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

Non S1 mode:

Fiber cut (The line clock is traced).

No external clock source is input (The external clock is traced).

The synchronous source is set as non-retrieve, is blocked or is set incorrectly.

S1 mode:

Fiber cut.

In the free-run mode.

The synchronous source is set incorrectly.


Warning:



Step Action

1 View the clock source traced by the NE. Clock source could be external


41


Step Action

clock source, line clock source, and tributary clock source.

External clock source

2 Check whether the output signal of the external clock device is normal or not. After using the normal external clock device, view whether the alarm is removed.

3 Check whether the external clock input mode is proper, and whether it is 2 MHz or 2 Mbit/s. After correcting the input mode, view whether the alarm is removed.

4 Check whether the external clock input impedance is proper, whether it is 75Ω or 120Ω. After correcting the input impedance, view whether the alarm is removed.

5 Check whether the clock input cable is connected correctly. If not, give a modification. Then view whether the alarm is removed.

6 Reset/replace the GXCS/EXCS/UXCS/XCE board and then view whether the alarm is removed.

Line clock source

7 View whether the corresponding line board has R_LOS alarm through the NM. After removing the R_LOS alarm, view whether the alarm is removed.

8 Reset/replace the line board and then view whether the alarm is removed.


Tributary clock source

10 View whether the corresponding tributary path has T_ALOS alarm from the NM. After removing the T_ALOS alarm, view whether the alarm is removed.

11 Reset/replace the tributary board and then view whether the alarm is removed.



The procedures of handling the LTI alarm are the same in either the S1 mode or the non S1 mode.


42


MS_AIS

1. Introduction

The MS_AIS alarm indicates “Multiplex section alarm indication”, which is a major alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The opposite station transmits the MS_AIS signal.

The GXCS/EXCS/UXCS/XCE board of the opposite station fails.

A fault occurs in the receiver of the board.


Warning:



Step Action

1 View whether the corresponding line board has R_LOS or R_LOF alarm from the NM. After removing the R_LOS or R_LOF alarm, view whether the alarm is removed.

2 Reset/replace the line board of the local station and then view whether the alarm is removed.

3 Reset/replace the line board of the opposite station and then view whether the alarm is removed.

4 Reset/replace the GXCS/EXCS/UXCS/XCE board of the opposite station and then view whether the alarm is removed.


43


MS_RDI

1. Introduction

The MS_RDI alarm indicates “Multiplex section remote defect indication”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

The opposite station receives the R_LOS, R_LOF or MS_AIS signal.




Warning:


Step Action

1 View whether the corresponding line board of the opposite station has R_LOS, R_LOF or MS_AIS alarm from the NM. After removing the R_LOS, R_LOF or MS_AIS alarm, view whether the alarm is removed.

2 Reset/replace the line board of the local station and then view whether the alarm is removed.


44


MS_REI

1. Introduction

The MS_REI alarm indicates “Multiplex section remote error indication”, which is a warning. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Cause

The opposite station receives B2 bit errors.


Step Action

1 Perform self-loop over the corresponding optical board of the local station and then view whether any new bit errors are added.

2 If new bit errors continue to be added, the fault lies in the transmitting module of an optical board of the local station. Replace the optical board.

3 If no more bit errors are added, the fault lies in the receiving module of an optical board of the opposite station. Replace the optical board.

NE_SF_LOST

1. Introduction

The NE_SF_LOST alarm indicates “It lacks a set of host software”, which is a warning. The SCC board may report this alarm.

2. Alarm Cause

A set of NE software is needed.


Step Action

1 The SCC board has two sets of NE software. Send one more set of NE software.


45


NESTATE_INSTALL

1. Introduction

The NESTATE_INSTALL alarm indicates “NE state install”, which is a critical alarm. The SCC board may report this alarm.

2. Alarm Cause

The NE is under installation.


Step Action

1 Correct the configuration data and send the new one.

NO_BD_SOFT

1. Introduction

The NO_BD_SOFT alarm indicates “NE state install”, which is a critical alarm. Such boards as EFS0, EFS4, EGS2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, AUX, BP2, BPA, COA, LWX, PQ1, PQM, PL3, PD3, GXCS, EXCS, UXCS and XCE may report this alarm.

2. Alarm Cause

No software is loaded on the board.


Step Action

1 Re-load the board software on the board.



46


NO_BD_PARA

1. Introduction

The NO_BD_PARA alarm indicates “Board parameter not configured”, which is a critical alarm. Such boards as BP2, BPA, COA and LWX may report this alarm.

2. Alarm Causes

No board parameter is set.

The set board parameter is lost.


Step Action

1 View whether the configuration data of the board is in the SCC board. If there is no data, modify the configuration data and resend it.

2 Reset or insert/remove the faulty board again.


OH_LOOP

1. Introduction

The OH_LOOP alarm indicates “OH loopback alarm”, which is a minor alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Cause

Loopback is set for the overhead of the line board.


Step Action

1 It is a state warning. After removing the loopback setting, this alarm will disappear automatically.

OOL

1. Introduction

The OOL alarm indicates “Phase-clock loop unlocked”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

For the 3R system, the line clock of the input signal is not traced and locked by the CDR phase-locked loop.


47



Step Action


OTH_HARD_FAIL

1. Introduction

The OTH_HARD_FAIL alarm indicates “Board failure at the opposite station”, which is a warning. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

Board fault at the opposite station.


Step Action

1 It is a state warning, which should not be handled. Remove the board fault at the opposite station, and this alarm will disappear automatically.

OUT_PWR_ABN

1. Introduction

The OUT_PWR_ABN alarm indicates “Output power abnormal”, which is a critical alarm. Such boards as ADL4, ADQ1, BP2, BPA, COA, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

The EDFA module is aged.

The measuring and amplifying circuit fails.

The input optical loop fails.


Step Action



48


P_AIS

1. Introduction

The P_AIS alarm indicates “PDH interface signal alarm indication”, which is a major alarm. The PL3 or PD3 boards may report this alarm.

2. Alarm Causes

The transmission line fails.

The PDH equipment of the opposite station outputs the AIS signal.


Warning:

Loopback is set for the service path of the tributary board on the NM, and “No loopback” should be set after the fault is removed.

Step Action

1 View whether the corresponding path of the tributary board has TU_AIS or TU_LOP alarm from the NM. After removing the TU_AIS or TU_LOP alarm, view whether the alarm is removed.

2 Perform self-loop for the service of the corresponding path (hardware inloop) at the DDF. If the alarm is removed, it is the equipment of the opposite end that fails. After removing the fault, see whether the alarm is removed.

3 In the self-loop operation in the previous step, if the alarm is not removed, another self-loop (hardware inloop) is required for this path at the interface board. If the alarm is removed, the fault lies in signal cable connection. After removing the fault, see whether the alarm disappears.




49


P_LOS

1. Introduction

The P_LOS alarm indicates “PDH interface loss of signal”, which is a major alarm. The PL3 or PD3 boards may report this alarm.

2. Alarm Causes

The transmitter of the PDH equipment connected with the local station fails.

The output port of the PDH equipment connected with the local station is disconnected or loosened.

The PDH signal input port of the local station is disconnected or loosened.

Board fault.

Interface cable fault.


Warning:

Loopback is set for the service path of the tributary board on the NM, and “No loopback” should be set after the fault is removed.

Step Action


2 Perform self-loop for the service of the corresponding path (hardware inloop) at the DDF. If the alarm is removed, it is the equipment of the opposite end that fails. After removing the fault, see whether the alarm is removed.

3 In the self-loop operation in the previous step, if the alarm is not removed, another self-loop (hardware inloop) is required for this channel at the interface board. If the alarm is removed, the fault lies in signal cable connection. After removing the fault, see whether the alarm disappears.




50


PLL_FAIL

1. Introduction

The PLL_FAIL alarm indicates “Phase Locked Loop Fail”, which is a minor alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

The phase-locked loop of the line board fails.


Warning:

If the line board does not provide self-healing ring protection, resetting, inserting/removing or replacing this board may interrupt the service. It is a dangerous operation.

Step Action

1 Reset or insert/remove the line board and then view whether the alarm is removed.

2 Replace the line board and then view whether the alarm is removed.


The line board provides the primary clock for the equipment. If the phase-locked loop fails, the equipment will select a clock source higher in priority as the synchronous source for clock source switching. In this case, the service will not be interrupted immediately, but it is potential fault which must be removed in time.


51


POWER_ABNORMAL

1. Introduction

The POWER_ABNORMAL alarm indicates “Power is abnormal”, which is a major alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, PQ1, PQM, PL3, PD3, GXCS, EXCS, UXCS, XCE, BPA, BA2, LWX and PIU may report this alarm.

2. Alarm Cause

The power module of the line board fails.


Step Action

1 Replace the board and then view whether the alarm is removed.

POWER_FAIL

1. Introduction

The POWER_FAIL alarm indicates “Power failure”, which is a major alarm. The SCC board may report this alarm.

2. Alarm Causes

The switch of the power board is not turned on.

The power board fails.

The GXCS/EXCS/UXCS/XCE board fails or is not in position.

The battery voltage is too low or the battery fails.


Step Action

1 Check whether the power switch of the power board is turned on or not. After turning on the power switch, view whether the alarm is removed.

2 Check whether the GXCS/EXCS/UXCS/XCE board is in position and whether it runs efficiently. After removing the fault in this board, view whether the alarm is removed.

3 Check whether power output of the power board is efficient. After replacing the faulty power board, view whether the alarm is removed.


52


PS

1. Introduction

The PS alarm indicates “Protection switching happened indication”, which is a major alarm. The PQ1, PQM and LWX boards may report this alarm.

2. Alarm Cause

Protection switching takes place.


Step Action


2 Check whether the parameter of the tributary board is set correctly. After setting it correctly, view whether the alarm is removed.

3 Replace the tributary board and then view whether the alarm is removed.

PUM_BCM_ALM

1. Introduction

The PUM_BCM_ALM alarm indicates “Bias temperature of the pump laser over threshold”, which is a major alarm. The BP2 and BPA boards may report this alarm.

2. Alarm Cause

The EDFA module of the optical amplifier board fails.


Step Action



If the bias current of the pump laser of the optical amplifier board exceeds the threshold, the laser may become unstable, bit errors may occur or the service may be interrupted. When this alarm is raised, immediate troubleshooting is required.

PUM_COOL_ALARM

1. Introduction

The PUM_COOL_ALM alarm indicates “Cooling current of the pump laser over threshold”, which is a critical alarm. The BP2 and BPA boards may report this alarm.

2. Alarm Cause

The EDFA module of the optical amplifier board fails.


53



Step Action



If the cooling current of the pump laser of the optical amplifier board exceeds the threshold, the laser may become unstable, bit errors may occur or the service may be interrupted. When this alarm is raised, immediate troubleshooting is required.

R_LOC

1. Introduction

The R_LOC alarm indicates “Receive loss of clock”, which is a critical alarm. Such boards as LWX, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes




Warning:


Step Action

1 Reset or insert/remove the GXCS/EXCS/UXCS/XCE board and then view whether the alarm is removed.


R_LOF

1. Introduction

The R_LOF alarm indicates “Receive loss of frame”, which is a critical alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes



54


The signal transmitted from the opposite station has no frame structure.

The receiver of this board fails.


Warning:



Step Action

1 View whether there is any higher-level R_LOS alarm from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 Check whether the received optical power of the alarming board is normal. If it is normal, turn to step 9.












55


R_LOS

1. Introduction

The R_LOS alarm indicates “Receive loss of signal”, which is a critical alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes

Fiber cut.

The line attenuation is excessive.

The receiver of this board fails.

The transmitter of the opposite station or line transmission fails.

The GXCS/EXCS/UXCS/XCE board of the opposite station fails or is not in position.


Warning:



Handling Procedures in the case that the received optical power is abnormal:

Step Action

1 Check whether the received optical power of the alarming board is normal. If it is normal, turn to step 9.






7 Check the fiber. If there is a problem, clean it and then view whether the


56


Step Action

alarm is removed.





R_OOF

1. Introduction

The R_OOF alarm indicates “Receive out of frame”, which is a critical alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1 and SPQ4 may report this alarm.

2. Alarm Causes


There are excessive bit errors during transmission.




Warning:




57


Step Action

1 View whether there are any higher-level alarms, such as R_LOS and R_LOF, on the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 Check whether the received optical power of the alarming board is normal. If the received optical power is normal, turn to step 9.











RELAY_FAIL

1. Introduction

The RELAY_FAIL alarm indicates “Relay fails”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, and SEP1 may report this alarm.

2. Alarm Cause

The status of the relay changes.


Step Action

1 Replace the line board.


58


S1_SYN_CHANGE

1. Introduction

The S1_SYN_CHANGE alarm indicates “Clock reference Source Change In S1_Mode”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

Fiber cut.

The external BITS is broken.

This alarm occurs in the upstream station.


Step Action

1 First, check whether the fiber is broken. If it is, the line board will report an R_LOS alarm.

2 Connect the fiber and check whether all alarms have disappeared.

3 If the fiber is in good condition, check whether the external BITS is broken.

(1) Check whether the external clock input cable is broken;

(2) Check whether there is anything wrong with the making of the E1 connector of the external clock input;

(3) Check whether the E1 connector of the external clock input is well inserted in the subrack panel;

4 If the BITS is in good condition, please check whether this alarm occurs in the upstream station.

5 If this alarm occurs in the upstream station, handle it at the upstream station.

SECU_ALM

1. Introduction

The SECU_ALM alarm indicates “Securing alarm”, which is a major alarm. The SCC board may report this alarm.

2. Alarm Cause

An illegal login event occurs.


Step Action

1 It is a secure alarm other than an equipment fault one. After this alarm occurs, you need to query the log and check whether the user logged in to the NE is illegal or not.


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If a wrong login password is typed in for three times or above, the NM will lock the screen, and then no people but the administrator can unlock it.


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ALM_SUBCARD_ABN

1. Introduction

The ALM_SUBCARD_ABN alarm indicates “Find the fault of sub-card”, which is a major alarm. Such boards as EFS0, EFS4, EGS2, EMR0, SPQ4, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

The interface board and the processing board are not matched.


Warning:

Replacing the interface board may be service-affecting. It is a dangerous operation.

Step Action

1 Replace the interface board.

SYN_BAD

1. Introduction

The SYN_BAD alarm indicates “Synchronous source deteriorated”, which is a minor alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

The index quality of the synchronous source traced degrades.


Step Action

1 View whether there are any higher-level error alarms or performance from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.

2 If it is an external clock source, check whether the clock signal is efficient.

3 Check whether the clock configuration is correct. After modifying the incorrect configuration, view whether the alarm is removed.


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SYNC_C_LOS

1. Introduction

The SYNC_C_LOS alarm indicates “Synchronous source level loss”, which is a warning. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

The higher level clock source is unavailable.

Fiber cut (If the line clock source is traced).

No more external source clock is input (If the external clock source is traced).


Warning:



Step Action

1 View the clock source traced by the NE. It can be external clock source, line clock source, or tributary clock source.

External clock source

2 Check whether the output signal of the external clock device is normal or not. After using the normal external clock device, view whether the alarm is removed.

3 Check whether the external clock input mode is proper, whether it is 2 MHz or 2 Mbit/s. After correcting the input mode, view whether the alarm is removed.

4 Check whether the external clock input impedance is proper, whether it is 75Ω or 120Ω. After correcting the input impedance, view whether the alarm is removed.

5 Check whether the clock input cable is connected correctly. If not, give a modification. Then view whether the alarm is removed.



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Step Action

Line clock source

7 View whether the corresponding line board has R_LOS alarm through the NM. After removing the R_LOS alarm, view whether the alarm is removed.

8 Reset/replace the line board and then view whether the alarm is removed.


Tributary clock source

2 View whether the corresponding tributary path has T_ALOS alarm through the NM. After removing the T_ALOS alarm, view whether the alarm is removed.

3 Reset/replace the tributary board and then view whether the alarm is removed.



This alarm is reported only in non-S1 mode.

SYNC_F_M_SWITCH

1. Introduction

The SYNC_F_M_SWITCH alarm indicates “Board switching is forced”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

The host sends a configuration command for source selection.


Step Action

1 Log in to the NE and cancel the manual/forced switching of the cross-connect board. The alarm will disappear.

SYNC_LOCKOFF

1. Introduction

The SYNC_LOCKOFF alarm indicates “Timing Source in Priority List has been Lockout”, which is a warning. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Cause

The host sends a command for clock source locking.


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Step Action

1 Log in to the NE and cancel the command of clock source locking. The alarm will disappear.

T_ALOS

1. Introduction

The T_ALOS alarm indicates “E1 interface loss of analog signal”, which is a major alarm. The PQ1 or PQM boards may report this alarm.

2. Alarm Causes

No E1 service is accessed.

The output port of the E1 interface on the DDF side is disconnected or loosened.

The input port of the E1 interface at the local station is disconnected or loosened.

Board fault.

Cable fault.


Step Action


2 Perform self-loop for the service of the alarming path (hardware inloop) at the DDF. If the alarm is removed, it is the equipment of the opposite end that fails. After removing the fault, view whether the alarm is removed.

3 In the self-loop operation in the previous step, if the alarm is not removed, another self-loop (hardware inloop) is required for this path at the interface board. If the alarm is removed, the fault lies in signal cable connection. After removing the fault, view whether the alarm is removed.

4 In the interface board self-loop operation in the previous step, if the alarm is not removed, inloop setting is required for this path on the NM. If the alarm is removed, it is the interface board that fails. After inserting/removing or replacing the interface board, view whether the alarm is removed.



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T_LOSEX

1. Introduction

The T_LOSEX alarm indicates “Extended T_LOS alarm”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, PL3 and PD3 may report this alarm.

2. Alarm Causes

There is no cross-connect board.

The clock source on cross-connect board is failure.

The line board is not well connected.


Step Action

1 Check whether the equipment is installed with a cross-connect board. If it is not, you need to install a cross-connect board.

2 After installing the cross-connect board, check whether the alarm disappears.

3 If a cross-connect board is installed, check whether the line board is well inserted.

4 Insert the line board in position and check whether the alarm disappears.

TC_DEG

1. Introduction

The TC_DEG alarm indicates “Concatenation bit error deterioration”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes







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Warning:


If GXCS/EXCS/UXCS/XCE board hot backup is not provided, resetting, inserting/removing or replacing this board may interrupt the service. It is a dangerous operation.

Step Action





5 If the fault lies in the opposite station, let the opposite station handle it.

TC_EXC

1. Introduction

The TC_EXC alarm indicates “Concatenation bit error exceeding the threshold”, which is a minor alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes







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Step Action





5 If the fault lies in the opposite station, let the opposite station handle it.

TC_INCAIS

1. Introduction

The TC_INCAIS alarm indicates “input alarm indication”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes

The opposite station sends AU_AIS or AU_LOP.




Warning:



Step Action

Fault in the opposite station

1 Check the NE of the opposite station for fault locating.


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Step Action







TC_LTC

1. Introduction

The TC_LTC alarm indicates “Loss of concatenation”, which is a minor alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes


The signal quality degrades.

The opposite station does not support TCM Option2 completely.


Warning:


Step Action


2 Replace the line board of the local station and view whether the alarm is removed.

3 Check whether the opposite station completely supports TCM Option2.


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TC_ODI

1. Introduction

The TC_ODI alarm indicates “Concatenation output defect indication”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes

The opposite station sends AU_AIS or AU_LOP.




Warning:



Step Action


1 Check the opposite station. After the troubleshooting, check whether the alarm disappears.

Fault not in the opposite station





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TC_OEI

1. Introduction

The TC_OEI alarm indicates “Concatenation output bit error indication”, which is a critical alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes




Warning:



Step Action


1 Check the opposite station. After the troubleshooting, check whether the alarm disappears.

Fault not in the opposite station





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TC_RDI

1. Introduction

The TC_RDI alarm indicates “Concatenation remote defect indication”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes

The opposite station sends AU_AIS.

Configuration error.


Step Action


2 Check whether the opposite station completely supports TCM.

3 Check whether the opposite station fails.

TC_REI

1. Introduction

The TC_REI alarm indicates “Concatenation remote bit error indication”, which is a critical alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes




Warning:


Step

Action


2 Replace the line board of the opposite station and then view whether the


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alarm is removed.

TC_TIM

1. Introduction

The TC_TIM alarm indicates “Concatenation trace bytes mismatched”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes


The signal quality degrades.

The configured trace bytes are inconsistent.

The opposite station does not support TCM Option2 completely.


Warning:


Step Action

1 Check whether the corresponding tandem connection trace byte of the line board of the opposite station is consistent with that of the local station. After making them consistent, view whether the alarm is removed.




5 Check whether the opposite station completely supports TCM Option2.


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TC_UNEQ

1. Introduction

The TC_UNEQ alarm indicates “Concatenation unequipped”, which is a major alarm. Such boards as SL64, SL16, SLQ4, SLD4 and SL4 may report this alarm.

2. Alarm Causes





Warning:


Step Action



3 Check the opposite station and remove the fault.


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TEM_HA

1. Introduction

The TEM_HA alarm indicates “Laser temperature is too high”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

The working temperature is too high.

Laser fault.


Warning:


Step Action

1 If the temperature in the equipment room is too high, lower the temperature and then view whether the alarm disappears.

2 If the laser fails, please replace the line board and then view whether the alarm disappears.


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TEM_LA

1. Introduction

The TEM_LA alarm indicates “Laser temperature is too low”, which is a major alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

The working temperature is too low.

Laser fault.


Warning:


Step Action

1 If the temperature in the equipment room is too low, raise the temperature and then view whether the alarm disappears.

2 If the laser fails, please replace the line board and then view whether the alarm disappears.


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TEMP_OVER

1. Introduction

The TEMP_OVER alarm indicates “Optical module working temperature override”, which is a minor alarm. Such boards as EFS0, EFS4, EGS2, BP2, BPA, COA, GXCS, EXCS, UXCS and XCE may report this alarm.

2. Alarm Causes

The ambient temperature is too high.

The cooling equipment fails.

Board fault.


Warning:

If the line board does not provide self-healing ring protection, resetting, inserting/removing or replacing the BP2, BPA or COA board may interrupt the service. It is a dangerous operation.


Step Action

1 Raise the temperature in the equipment room and then view whether the alarm disappears.

2 Check the cooling equipment (e.g. air conditioner) in the equipment room. If the cooling equipment is damaged, replace it and then check whether the alarm disappears.

3 Check the board. If the board is damaged, replace it.


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TPS_ALM

1. Introduction

The TPS_ALM alarm indicates “TPS alarm”, which is a minor alarm. Such boards as SEP1, SPQ4, EFS0, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Cause

TPS takes place.


Step Action

1 Reset or insert/remove the switched board and then view whether the alarm disappears.

2 If the board is damaged, replace it.

TR_LOC

1. Introduction

The TR_LOC alarm indicates “Line transmit loss of clock”, which is a minor alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, SEP1, SPQ4, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes




Warning:


Step Action

1 Reset the GXCS/EXCS/UXCS/XCE board and then view whether the alarm disappears.

2 Replace the GXCS/EXCS/UXCS/XCE board that reports the alarm and then view whether the alarm disappears.


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TF

1. Introduction

The TF alarm indicates “TRANS_FAIL”, which is a critical alarm. Such boards as ADL4, ADQ1, SL64, SL16, SLQ4, SLD4, SL4, SLQ1 and SL1 may report this alarm.

2. Alarm Causes

The board is damaged.

The board is not in position.


Warning:


Step Action

1 Reset or insert/remove the board and then check whether the alarm disappears.

2 Replace the board and then check whether the alarm disappears.


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TU_AIS

1. Introduction

The TU_AIS alarm indicates “TU alarm indication”, which is a major alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes


The corresponding path at the opposite station fails.

It is caused by a higher level alarm.

The cross-connect board fails.


Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF or HP_SLM, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.



4 Replace the alarm reporting tributary board and then view whether the alarm is removed.



The GXCS/EXCS/UXCS/XCE board will not fail unless all VC-4s of the tributary board report the TU_AIS alarm.


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TU_LOP

1. Introduction

The TU_LOP alarm indicates “TU Loss of Pointer”, which is a major alarm. Such boards as PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes

The interface between the tributary board and the cross-connect board fails.



Step Action

1 View whether there are any higher-level alarms, such as R_LOS, R_LOF or HP_SLM, from the NM. Handle these higher-level alarms first and then view whether the alarm is removed.



4 Replace the alarm reporting tributary board and then view whether the alarm is removed.



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UP_E1_AIS

1. Introduction

The UP_E1_AIS alarm indicates “E1 signal alarm indication”, which is a minor alarm. The PQ1 or PQM boards may report this alarm.

2. Alarm Cause

The E1 uplink signal is all “1”s.


Step Action

1 Check if the E1 signal is normal at the opposite station. Remove board fault at the opposite station and view whether the alarm disappears.

W_OFFLINE

1. Introduction

The W_OFFLINE alarm indicates “Offline of wrench”, which is a major alarm. The GXCS, EXCS, UXCS and XCE boards may report this alarm.

2. Alarm Causes

The ejector lever on the front panel is rotated to the open position.

The inching switch on the front panel fails.


Step Action

1 View whether the inching switch on the front panel of the GXCS/ EXCS board is rotated to the open position. Reset it and then check whether the alarm disappears.

2 The inching switch fails. Replace the front panel.


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W_R_FAIL

1. Introduction

The W_R_FAIL alarm indicates “Reading and writing single chip register failed”, which is a major alarm. Such boards as ADL4, ADQ1, EFS0, EFS4, EGS2, EGT2, EMR0, SL64, SL16, SLQ4, SLD4, SL4, SLQ1, SL1, BP2, BPA, COA, LWX, GXCS, EXCS, UXCS, XCE, SEP1, SPQ4, PQ1, PQM, PL3 and PD3 may report this alarm.

2. Alarm Causes

Board fault.



Warning:

If the line board does not provide self-healing ring protection, resetting, inserting/removing or replacing the line board or the optical amplifier board may interrupt the service. It is a dangerous operation.


Step Action

1 Replace the alarm reporting board and then view whether the alarm disappears.

2 Replace the GXCS/EXCS/UXCS/XCE board and then view whether the alarm disappears.


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WORK_CUR_OVER

1. Introduction

The WORK_CUR_OVER alarm indicates “Working current override”, which is a minor alarm. The COA board may report this alarm.

2. Alarm Cause

The EDFA module is aged.


Warning:

If the line board does not provide self-healing ring protection, resetting, inserting/removing or replacing the COA board may interrupt the service. It is a dangerous operation.

Step Action

1 Reset the COA board, and then view whether the alarm disappears.

2 Replace the COA board and then check whether the alarm disappears.

WRG_BD_TYPE

1. Introduction

The WRG_BD_TYPE alarm indicates “Wrong inserted board type”, which is a minor alarm. The SCC board may report this alarm.

2. Alarm Causes

A wrong board is inserted.

Board configuration error.


Step Action

1 Check whether the board is the right one. If it is not, use a right one. Check whether the alarm disappears.

2 Check whether the board configuration is correct. Modify the board configuration and then check whether the alarm disappears.


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03-chapter 3 alarm handling

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