BSC Alarm Reference

This topic describes the BSC alarms and the alarm lists.

• Changing the Environment Alarm Name of the BTS
  This describes how to change the name of the environment alarm on the relevant BTS. The operation is performed after the related information of the environment alarm is collected on the site.
• BSC Alarm List
  
• 101 MSC Overload
  
• 102 Disrupted Connection with the CBC
  
• 104 All PBSLs in the PCU Are Faulty
  
• 105 ONE PBSL Link SINGLE PASS
  
• 106 PCIC CHECK IS INCONSISTENT
  
• 124 No A Interface Circuit Configured in the BSC
  
• 126 No Circuit Configured in the MSC
  
• 127 No Pb Interface Circuit Configured on the BSC side
  
• 128 No Circuit Configured in the PCU
  
• 131 BSC Unable to Reset a Circuit
  
• 132 BSC Unable to Block a Circuit
  
• 133 BSC Unable to Unblock a Circuit
  
• 134 BSC Unable to Block a Packet Circuit
  
• 135 BSC Unable to Unblock a Packet Circuit
  
• 140 BSC Unable to Read License File
  
• 142 Resource Overused
  
• 155 All Ater LapdLink Faulty
  
• 157 License Inferior Limit
  
• 160 HDLC Link Fault
  
• 162 BSS Internal Voice Channel Alarm
  
• 203 PDCH Configured on Overlayer with an old version PCU
  
• 206 TRX Test Alarm
  
• 291 Cell Transmission Delay Abnormal
  
• 293 GB BC Faulty
  
• 294 TRX Config Error
  
• 331 NSVC Faulty
  
• 332 NSVL Faulty
  
• 333 NSE Faulty
  
• 340 Cell PS Service Faulty
  
• 341 DSP Resource Overload
  
• 342 PTP BVC Faulty
  
• 343 NSVL Dynamic Configuration Process Failure
  
• 344 FAULTY DSP OVER LIMIT
  
• 401 BCCH Mutual Aid in a Cell
  
• 402 Switchback after BCCH Mutual Aid in a Cell
  
• 403 Baseband FH Mutual Aid in a Cell
  
• 404 Switchback after Baseband FH Mutual Aid in a Cell
  
• 405 Cell Out of Service
  
• 408 Automatic Loading and Activation of BTS TMU Version
  
• 409 Cell BCCH Aiding to IUO_INN TRX
  
• 412 Manually Obturate Cell
  
• 413 Manually Obturate Trx
  
• 414 Manually Obturate Channel
  
• 416 SitePowerOff
  
• 417 BTS Loop Rotate
  
• 418 BTS Loop Rotateback
  
• 419 Bar code of BTS IP board config error
  
• 423 Extension Signaling Link Failure
  
• 424 Cell's FH Data Config Error
  
• 425 Trx Passage Mutual Aid in a Cell
  
• 426 Switchback after Trx Passage Mutual Aid in a Cell
  
• 427 Configuration Data Not Supported by Current BTS Version
  
• 430 BTS Software Inconsistency Alarm
  
• 701 M3UA Link Fault
  
• 702 M3UA Link Congestion
  
• 703 M3UA Route Unvailable
  
• 704 M3UA Destination Entity Unvailably
  
• 705 IP-based interface board Route Status Unavailable
  
• 706 IP-based interface board Port Working Mode Fault
  
• 801 Data Out of Synchronization
  
• 802 Error of Transaction Logging File
  
• 803 Last Start Failure Alarm
  
• 804 Automatic Planning Optimization Failure Alarm
  
• 1000 LAPD OML Fault
  
• 21001 LAPD Link Congestion
  
• 21002 Broken LAPD Link
  
• 21501 MTP3 DSP Unreachable
  
• 21502 MTP3 Layer 3 Congestion
  
• 21503 MTP3 Link Unavailable
  
• 21504 MTP3 Signaling Link2 Congestion
  
• 21514 MTP2 Link Service Disrupted
  
• 21516 Route Transmission on the MTP3 Prohibited
  
• 21525 SCCP DSP Unreachable
  
• 21526 SCCP Subsystem Prohibited
  
• 21528 Remote SCCP Fault
  
• 21531 Lack of SCCP Connection Resources
  
• 65384 BTS Custom Environment Alarm1
  
• 65385 BTS Custom Environment Alarm2
  
• 65386 BTS Custom Environment Alarm3
  
• 65387 BTS Custom Environment Alarm4
  
• 65388 BTS Custom Environment Alarm5
  
• 65389 BTS Custom Environment Alarm6
  
• 65390 BTS Custom Environment Alarm7
  
• 65391 BTS Custom Environment Alarm8
  
• 65392 BTS Custom Environment Alarm9
  
• 65393 BTS Custom Environment Alarm10
  
• 65394 BTS Custom Environment Alarm11
  
• 65395 BTS Custom Environment Alarm12
  
• 65396 BTS Custom Environment Alarm13
  
• 65397 BTS Custom Environment Alarm14
  
• 65398 BTS Custom Environment Alarm15
  
• 65399 BTS Custom Environment Alarm16
  
• 65400 BTS Custom Environment Alarm17
  
• 65401 BTS Custom Environment Alarm18
  
• 65402 BTS Custom Environment Alarm19
  
• 65403 BTS Custom Environment Alarm20
  
• 65404 BTS Custom Environment Alarm21
  
• 65405 BTS Custom Environment Alarm22
  
• 65406 BTS Custom Environment Alarm23
  
• 65407 BTS Custom Environment Alarm24
  
• 65408 BTS Custom Environment Alarm25
  
• 65409 BTS Custom Environment Alarm26
  
• 65410 BTS Custom Environment Alarm27
  
• 65411 BTS Custom Environment Alarm28
  
• 65412 BTS Custom Environment Alarm29
  
• 65413 BTS Custom Environment Alarm30
  
• 65414 BTS Custom Environment Alarm31
  
• 65415 BTS Custom Environment Alarm32
  
• 65416 BTS Custom Environment Alarm33
  
• 65417 BTS Custom Environment Alarm34
  
• 65418 BTS Custom Environment Alarm35
  
• 65419 BTS Custom Environment Alarm36
  
• 65420 BTS Custom Environment Alarm37
  
• 65421 BTS Custom Environment Alarm38
  
• 65422 BTS Custom Environment Alarm39
  
• 65423 BTS Custom Environment Alarm40
  
• 65424 BTS Custom Environment Alarm41
  
• 65425 BTS Custom Environment Alarm42
  
• 65426 BTS Custom Environment Alarm43
  
• 65427 BTS Custom Environment Alarm44
  
• 65428 BTS Custom Environment Alarm45
  
• 65429 BTS Custom Environment Alarm46
  
• 65430 BTS Custom Environment Alarm47
  
• 65431 BTS Custom Environment Alarm48
  
• 65432 BTS Custom Environment Alarm49
  
• 65433 BTS Custom Environment Alarm50
  
• 65434 BTS Custom Environment Alarm51
  
• 65435 BTS Custom Environment Alarm52
  
• 65436 BTS Custom Environment Alarm53
  
• 65437 BTS Custom Environment Alarm54
  
• 65438 BTS Custom Environment Alarm55
  
• 65439 BTS Custom Environment Alarm56
  
• 65440 BTS Custom Environment Alarm57
  
• 65441 BTS Custom Environment Alarm58
  
• 65442 BTS Custom Environment Alarm59
  
• 65443 BTS Custom Environment Alarm60
  
• 65444 BTS Custom Environment Alarm61
  
• 65445 BTS Custom Environment Alarm62
  
• 65446 BTS Custom Environment Alarm63
  
• 65447 BTS Custom Environment Alarm64
  
• 65448 BTS Custom Environment Alarm65
  
• 65449 BTS Custom Environment Alarm66
  
• 65450 BTS Custom Environment Alarm67
  
• 65451 BTS Custom Environment Alarm68
  
• 65452 BTS Custom Environment Alarm69
  
• 65453 BTS Custom Environment Alarm70
  
• 65454 BTS Custom Environment Alarm71
  
• 65455 BTS Custom Environment Alarm72
  
• 65456 BTS Custom Environment Alarm73
  
• 65457 BTS Custom Environment Alarm74
  
• 65458 BTS Custom Environment Alarm75
  
• 65459 BTS Custom Environment Alarm76
  
• 65460 BTS Custom Environment Alarm77
  
• 65461 BTS Custom Environment Alarm78
  
• 65462 BTS Custom Environment Alarm79
  
• 65463 BTS Custom Environment Alarm80
  
• 65464 BTS Custom Environment Alarm81
  
• 65465 BTS Custom Environment Alarm82
  
• 65466 BTS Custom Environment Alarm83
  
• 65467 BTS Custom Environment Alarm84
  
• 65468 BTS Custom Environment Alarm85
  
• 65469 BTS Custom Environment Alarm86
  
• 65470 BTS Custom Environment Alarm87
  
• 65471 BTS Custom Environment Alarm88
  
• 65472 BTS Custom Environment Alarm89
  
• 65473 BTS Custom Environment Alarm90
  
• 65474 BTS Custom Environment Alarm91
  
• 65475 BTS Custom Environment Alarm92
  
• 65476 BTS Custom Environment Alarm93
  
• 65477 BTS Custom Environment Alarm94
  
• 65478 BTS Custom Environment Alarm95
  
• 65479 BTS Custom Environment Alarm96
  
• 65480 BTS Custom Environment Alarm97
  
• 65481 BTS Custom Environment Alarm98
  
• 65482 BTS Custom Environment Alarm99
  
• 65483 BTS Custom Environment Alarm100
  
• 65484 BTS Custom Environment Alarm101
  
• 65485 BTS Custom Environment Alarm102
  
• 65486 BTS Custom Environment Alarm103
  
• 65487 BTS Custom Environment Alarm104
  
• 65488 BTS Custom Environment Alarm105
  
• 65489 BTS Custom Environment Alarm106
  
• 65490 BTS Custom Environment Alarm107
  
• 65491 BTS Custom Environment Alarm108
  
• 65492 BTS Custom Environment Alarm109
  
• 65493 BTS Custom Environment Alarm110
  
• 65494 BTS Custom Environment Alarm111
  
• 65495 BTS Custom Environment Alarm112
  
• 65496 BTS Custom Environment Alarm113
  
• 65497 BTS Custom Environment Alarm114
  
• 65498 BTS Custom Environment Alarm115
  
• 65499 BTS Custom Environment Alarm116
  
• 65500 BTS Custom Environment Alarm117
  
• 65501 BTS Custom Environment Alarm118
  
• 65502 BTS Custom Environment Alarm119
  
• 65503 BTS Custom Environment Alarm120
  
• 65504 BTS Custom Environment Alarm121
  
• 65505 BTS Custom Environment Alarm122
  
• 65506 BTS Custom Environment Alarm123
  
• 65507 BTS Custom Environment Alarm124
  
• 65508 BTS Custom Environment Alarm125
  
• 65509 BTS Custom Environment Alarm126
  
• 65510 BTS Custom Environment Alarm127
  
• 65511 BTS Custom Environment Alarm128
  
• 65512 BTS Custom Environment Alarm129
  
• 65513 BTS Custom Environment Alarm130
  
• 65514 BTS Custom Environment Alarm131
  
• 65515 BTS Custom Environment Alarm132
  
• 65516 BTS Custom Environment Alarm133
  
• 65517 BTS Custom Environment Alarm134
  
• 65518 BTS Custom Environment Alarm135
  
• 65519 BTS Custom Environment Alarm136
  
• 65520 BTS Custom Environment Alarm137
  
• 65521 BTS Custom Environment Alarm138
  
• 65522 BTS Custom Environment Alarm139
  
• 65523 BTS Custom Environment Alarm140
  
• 65524 BTS Custom Environment Alarm141
  
• 65525 BTS Custom Environment Alarm142
  
• 65526 BTS Custom Environment Alarm143
  
• 65527 BTS Custom Environment Alarm144
  
• 65528 BTS Custom Environment Alarm145
  
• 65529 BTS Custom Environment Alarm146
  
• 65530 BTS Custom Environment Alarm147
  
• 65531 BTS Custom Environment Alarm148
  
• 65532 BTS Custom Environment Alarm149
  
• 65533 BTS Custom Environment Alarm150
  
• 21204 Unavailable Subrack
  
• 21205 Board Fault
  
• 21206 CPU Fault
  
• 21208 Board Hardware Self-Test Failure of Minor Level
  
• 21209 Board Hardware Self-Test Failure of Major Level
  
• 21210 CPU Overload
  
• 21211 Board Switchover
  
• 21213 Board HA Status Inconsistent
  
• 21214 Low space disk
  
• 21215 XPU Port IP Conflict
  
• 21216 PowerBox Types Inconsistent
  
• 21250 Board Ethernet Communication Fault
  
• 21251 Daemon Version Not Match Alarm
  
• 21254 Standby GOMU Abnormal Startup
  
• 21255 Abnormal OMU Data Configuration
  
• 21256 GOMU Disk Fault Alarm
  
• 21257 DPU Service Reduced
  
• 21258 Board Isolation
  
• 21259 BSC Fault AutoCure Start
  
• 21260 BSC Fault AutoCure Result Check Over
  
• 21601 NTP Server unconfigured
  
• 21602 Adjust time failure with the NTP server
  
• 21019 Failed Loading of Board Software
  
• 21020 Software Version Inconsistency
  
• 21022 Remote Boards Loading too Slowly
  
• 21023 Inconsistent Board Config and Physic
  
• 21024 GBAM File Check Failure
  
• 21025 Patch not confirm
  
• 21026 License Check Fail Alarm
  
• 21027 Remote EIU/OIU Board Connection Error
  
• 21030 Load License to SMU failed
  
• 21031 Remote Upgrade Not Completed
  
• 21301 Communication link fault
  
• 21581 APS Started Alarm
  
• 21582 Deactivate APS Alarm
  
• 21583 APS Protocol Swap Alarm
  
• 21584 APS K1/K2 Mismatch Alarm
  
• 21585 APS K2 Mismatch Alarm
  
• 21586 APS Uni-Bid Mode Mismatch Alarm
  
• 21551 Ater OML Broken Alarm
  
• 22001 Extern Water Sensor Alarm
  
• 22002 Extern Smoke Sensor Alarm
  
• 22003 Extern InfraRed Sensor Alarm
  
• 22004 Extern DoorEngine Sensor Alarm
  
• 22005 Extern Figure Sensor1 Alarm
  
• 22006 Extern Figure Sensor2 Alarm
  
• 22007 Extern Figure Sensor3 Alarm
  
• 22008 Extern Figure Sensor4 Alarm
  
• 22009 Extern Figure Sensor5 Alarm
  
• 22010 Extern Figure Sensor6 Alarm
  
• 22011 Extern Figure Sensor7 Alarm
  
• 22012 Extern Figure Sensor8 Alarm
  
• 22013 Extern Figure Sensor9 Alarm
  
• 22014 Extern Figure Sensor10 Alarm
  
• 22015 Extern Figure Sensor11 Alarm
  
• 22016 Extern Figure Sensor12 Alarm
  
• 22017 Extern Figure Sensor13 Alarm
  
• 22018 Extern Figure Sensor14 Alarm
  
• 22019 Extern Figure Sensor15 Alarm
  
• 22020 Extern Figure Sensor16 Alarm
  
• 22021 Extern Figure Sensor17 Alarm
  
• 22022 Extern Figure Sensor18 Alarm
  
• 22023 Extern Figure Sensor19 Alarm
  
• 22024 Extern Figure Sensor20 Alarm
  
• 22025 Extern Figure Sensor21 Alarm
  
• 22026 Extern Figure Sensor22 Alarm
  
• 22027 Extern Figure Sensor23 Alarm
  
• 22028 Extern Figure Sensor24 Alarm
  
• 22029 Extern Figure Sensor25 Alarm
  
• 22030 Extern Figure Sensor26 Alarm
  
• 22031 Extern Figure Sensor27 Alarm
  
• 22032 Extern Figure Sensor28 Alarm
  
• 22033 Extern Figure Sensor29 Alarm
  
• 22034 Extern Figure Sensor30 Alarm
  
• 22035 Extern Figure Sensor31 Alarm
  
• 22036 Extern Figure Sensor32 Alarm
  
• 22051 Extern Simulate Sensor1 Alarm
  
• 22052 Extern Simulate Sensor2 Alarm
  
• 22053 Extern Simulate Sensor3 Alarm
  
• 22054 Extern Simulate Sensor4 Alarm
  
• 65334 BSC Custom Environment Alarm1
  
• 65335 BSC Custom Environment Alarm2
  
• 65336 BSC Custom Environment Alarm3
  
• 65337 BSC Custom Environment Alarm4
  
• 65338 BSC Custom Environment Alarm5
  
• 65339 BSC Custom Environment Alarm6
  
• 65340 BSC Custom Environment Alarm7
  
• 65341 BSC Custom Environment Alarm8
  
• 65342 BSC Custom Environment Alarm9
  
• 65343 BSC Custom Environment Alarm10
  
• 65344 BSC Custom Environment Alarm11
  
• 65345 BSC Custom Environment Alarm12
  
• 65346 BSC Custom Environment Alarm13
  
• 65347 BSC Custom Environment Alarm14
  
• 65348 BSC Custom Environment Alarm15
  
• 65349 BSC Custom Environment Alarm16
  
• 65350 BSC Custom Environment Alarm17
  
• 65351 BSC Custom Environment Alarm18
  
• 65352 BSC Custom Environment Alarm19
  
• 65353 BSC Custom Environment Alarm20
  
• 65354 BSC Custom Environment Alarm21
  
• 65355 BSC Custom Environment Alarm22
  
• 65356 BSC Custom Environment Alarm23
  
• 65357 BSC Custom Environment Alarm24
  
• 65358 BSC Custom Environment Alarm25
  
• 65359 BSC Custom Environment Alarm26
  
• 65360 BSC Custom Environment Alarm27
  
• 65361 BSC Custom Environment Alarm28
  
• 65362 BSC Custom Environment Alarm29
  
• 65363 BSC Custom Environment Alarm30
  
• 65364 BSC Custom Environment Alarm31
  
• 65365 BSC Custom Environment Alarm32
  
• 65366 BSC Custom Environment Alarm33
  
• 65367 BSC Custom Environment Alarm34
  
• 65368 BSC Custom Environment Alarm35
  
• 65369 BSC Custom Environment Alarm36
  
• 65370 BSC Custom Environment Alarm37
  
• 65371 BSC Custom Environment Alarm38
  
• 65372 BSC Custom Environment Alarm39
  
• 65373 BSC Custom Environment Alarm40
  
• 65374 BSC Custom Environment Alarm41
  
• 65375 BSC Custom Environment Alarm42
  
• 65376 BSC Custom Environment Alarm43
  
• 65377 BSC Custom Environment Alarm44
  
• 65378 BSC Custom Environment Alarm45
  
• 65379 BSC Custom Environment Alarm46
  
• 65380 BSC Custom Environment Alarm47
  
• 65381 BSC Custom Environment Alarm48
  
• 65382 BSC Custom Environment Alarm49
  
• 65383 BSC Custom Environment Alarm50
  
• 20002 Incorrect Board Slot Information
  
• 20003 Board Fault - Faulty Inner Clock
  
• 20004 Board Fault-Abnormal Voltage
  
• 20005 Faulty Clock Source 0 from the Front Interface Board to the Backplane of the GSCU
  
• 20006 Faulty Clock Source 1 from the Front Interface Board to the Backplane of the GSCU
  
• 20007 Faulty Clock Source 0 from the Rear Interface Board to the Backplane of the GSCU
  
• 20008 Faulty Clock Source 1 from the Rear Interface Board to the Backplane of the GSCU
  
• 20009 Faulty 8 kHz Clock Source from the Active GGCU to the Backplane of the GSCU
  
• 20010 Faulty 8 kHz Clock Source from the Standby GGCU to the Backplane of the GSCU
  
• 20013 Faulty GGCU 8 kHz Clock Source for the Front Panel of the GSCU
  
• 20016 Faulty 32 MHz Clock from the Backplane
  
• 20025 BIOS Check Failure
  
• 20026 Faulty Phase-Locked Loop of the Board Clock
  
• 20027 Abnormal Subrack Information
  
• 20028 Faulty Packet Switching Unit
  
• 20029 Board Fault - Faulty Logical Unit
  
• 20030 Faulty Sub-Board
  
• 20038 Faulty Board Chip
  
• 20039 Faulty Output Clock Signals
  
• 20040 High Board Temperature - Minor Alarm
  
• 20041 High Board Temperature - Major Alarm
  
• 20042 High Board Temperature - Critical Alarm
  
• 20044 Unavailable Clock Source
  
• 20045 Failed to Get Temperature
  
• 20052 Flash erase/write fail alarm
  
• 20081 Loss of E1/T1 Signals (LOS)
  
• 20082 Loss of E1/T1 Frames (LOF)
  
• 20083 Remote E1/T1 Alarm (RAI)
  
• 20084 E1/T1 Alarm Indication Signal (AIS)
  
• 20085 Loss of E1/T1 Multiframes (LOM)
  
• 20086 E1/T1 Link Loopback
  
• 20087 High BER over the E1/T1 Link
  
• 20089 Excessive Loss of E1/T1 Signals in an Hour
  
• 20090 Excessive E1/T1 Synchronization Failures in an Hour
  
• 20091 E1/T1 Excessive Peer End Alarms Per Hour
  
• 20092 E1/T1 Excessive Bit Error Rate Per Hour
  
• 20093 E1/T1 Excessive Slip Frames Per Hour
  
• 20113 Faulty GE Link on the Sub-board of GXPUx
  
• 20114 Inter-Board HIG Link Faulty
  
• 20115 Intra-Board HIG Link Faulty
  
• 20116 Inter-Board HIG Trunk Communication Failure
  
• 20117 Board Fault-GE Switch Unit Failure
  
• 20118 Inter-Board HIG Communication Failure
  
• 20120 Broadcast packet overflow alarm
  
• 20121 GESW BAM GE Communication Failure
  
• 20122 GESW BAM Trunk Communication Failure
  
• 20123 Faulty GE Link on the Panel of GSCU board
  
• 20124 Faulty GE Link on the Panel of GXPUx board
  
• 20125 GESW Back Trunk Group Link Failure
  
• 20126 GE Trunk Group Link Fault of transaction board
  
• 20127 GESW Panel Trunk Group Link Failure
  
• 20128 Faulty GE Link on the Backplane of GSCU board
  
• 20129 Faulty GE Link on the Backplane of transaction board
  
• 20164 Quality of GE Link on Service Board Backplane Decrease
  
• 20191 Board Faulty-Link Disconnection on the Service Port
  
• 20194 Disconnected Link Between the Ports on the Master and Slave GSCU
  
• 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)
  
• 20225 Mismatch of Trace Byte of the Regenerator Section on the Optical Port (RTIM)
  
• 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)
  
• 20234 Trace Flag Mismatch on the High-Order Path of the Optical Port (HPTIM)
  
• 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)
  
• 20243 Trace Flag Mismatch on the Lower-Order Path of the Optical Port (LPTIM)
  
• 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)
  
• 20252 Loss of Tributary Multi-Frames (LOM)
  
• 20253 Slip Frame over the Tributary
  
• 20254 Tributary Loopback Alarm
  
• 20255 Optical Module Fault
  
• 20271 Serial Port Fault
  
• 20272 Monitor Board Out of Position
  
• 20321 Unavailable Clock Reference for GGCU
  
• 20322 Unavailable Current Clock Reference for GGCU
  
• 20323 GGCU Failure-Abnormal Frequency Doubler
  
• 20324 GGCU Failure-Abnormal Local Oscillation Signal
  
• 20325 Clock Reference Failure of GGCU over 24 Hours
  
• 20329 Unavailable Input Clock Source for GGCU
  
• 20352 Clock Failure of the TDM Interface Unit
  
• 20353 TDM Interface Unit Failure Alarm
  
• 20357 EIU/OIU Time slot loopback alarm
  
• 20359 TDM backplane Link Failure of GTNU
  
• 20360 TDM backplane Link Failure of transaction board
  
• 20361 TDM panel Link Failure of GTNU
  
• 20362 Master TDM link of GTNU backplane fault alarm
  
• 20363 Master TDM link of transaction board backplane fault alarm
  
• 20364 Master TDM link of GTNU panel fault alarm
  
• 20371 GE/FE Conversion Unit Fault
  
• 20372 GE Interface Unit Fault
  
• 20401 Board Fault-ME Fault
  
• 20409 Quality of GE Link on GSCU Backplane Decrease
  
• 20410 Quality of GE Link on GSCU Panel Decrease
  
• 20411 Quality of GE Link on Sub-Board Decrease
  
• 20412 Quality of GE Link on GXPUx Panel Decrease
  
• 20521 Back Board Trunk's L2 Entry Failure
  
• 20951 Status Change Event Alarm
  
• 20963 Number of E1/T1 Frame Slips Within 24 Hours Over Threshold
  
• 20964 Number of E1/T1 Frame Slips Within 24 Hours Over Max Threshold
  
• 20960 2M Clock reference from line fault alarm
  
• 20956 Clock reference source from BackPlane fault alarm
  
• 20954 8k Clock reference source 0 from mainboard to BackPlane fault alarm
  
• 20990 Clock reference source for chip
  
• 20966 SubBoard not exist
  
• 20978 Software Abnormal
  
• 20969 Ethernet Link failure
  
• 20972 Ethernet Link Loop
  
• 20980 Ethernet Port Band Width Change
  
• 20981 Ethernet Port Duplex Mode Change
  
• 20977 Failure of High-Speed Communication Link on the Backplane of Service Boards
  
• 20421 Abnormal Temperature
  
• 20422 Abnormal Voltage
  
• 20423 Communication Failure
  
• 20424 Abnormal Humidity
  
• 20425 Abnormal External Analog Sensor
  
• 20426 Abnormal External Digital Sensor
  
• 20427 Abnormal PDB Output Switch Sensor
  
• 20428 Abnormal PDB Power Sensor
  
• 20429 Abnormal PDB Lightning Protection Sensor
  
• 20430 Fan Box Temperature Sensor Invalidation
  
• 20431 Fan Block Alarm
  
• 20433 Fan Board Hardware Failure Alarm
  
• 20434 Board Register Successfully Alarm
  
• 20435 Failure in One Power Supply for the Fan Box
  
• 20436 Abnormal PDB Monitoring Board Component