132776368 56783249 zxg10 bss v6 20 base station subsystem alarm handling manual 1

ZXG10 BSSBase Station Subsystem

Alarm Handling Manual

Version 6.20

ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: [email protected]

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Revision History

Date Revision No. Serial No. Reason for Issue

Aug. 29, 2008 R1.0 sjzl20083213 First edition

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Document Name ZXG10 BSS (V6.20) Base Station Subsystem Alarm Handling Manual

Product Version V6.20 Document Revision Number R1.0

Serial No. sjzl20083213 Equipment Installation Date

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Contents

About This Manual ............................................................ i

Purpose................................................................................ i Intended Audience ................................................................. i Prerequisite Skill and Knowledge .............................................. i What Is in This Manual ........................................................... i Related Documentation.......................................................... ii Conventions........................................................................ iii How to Get in Touch............................................................. iv

Declaration of RoHS Compliance..................................... v

Chapter 1.......................................................................... 1

Alarm Message Summary................................................1

Alarm Code Definition ......................................................1 Alarm Severity Level .............................................................1

Alarm Handling ...............................................................2 Alarm Classification...............................................................3

Chapter 2.......................................................................... 5

Alarm Messages............................................................... 5

Equipment Alarms...........................................................5 Loss of Optical Transceiver Module Signal .................................5 Ethernet Controller's Physical Link Off ......................................6 Trunk Link Is Used for CSU Loopback Test ................................6 Cell Delineation Not Synchronized ...........................................7 Loss of Cell Delineation..........................................................7 8K input clock lose ................................................................7 16M Input Clock Lose ............................................................8 PP2S Clock Input Lose ...........................................................8 32M Clock lost in TSNB ..........................................................8 Clock Phase Does not Match When Inputting 8k,16M Clock to Backboard ...........................................................................9

Clock Chip of This Board Is in Preheat Status............................ 9 Loss of Clock When Input to Board.......................................... 9 SDH/SONET fault ................................................................. 9 SDH/SONET:Loss of Frame ...................................................10 SDH/SONET: Regenerator Section Trace Mismatch/Section Trace Mismatch ...........................................................................10 SDH/SONET:MS-AIS,Line Alarm Indication Signal ....................11 SDH/SONET:Multiplexing Section Far-end Reception Failure/Line Far-end Reception Failure.....................................................11 SDH/SONET:Signal Failure....................................................12 SDH/SONET:Signal Deterioration...........................................12 SDH/SONET:Loss of AU-4 Pointer/Loss of Channel Pointer.........13 SDH/SONET:AU-AIS/Channel-AIS..........................................13 SDH/SONET:HP-Trace Mismatch/ Patch Trace Mismatch............13 SDH/SONET:HP Unassembled/Path Unassembled.....................14 DH/SONET:HP Label Mismatch/Path Label Mismatch.................14 SDH/SONET:HP Remote Reception Failure ..............................14 SDH/SONET:LOM ................................................................15 SDH/SONET: Loss of TU Pointer/Loss of Virtual Tributary Pointer15 SDH/SONET:Tributary Unit Alarm Indication Signal/Virtual Tributary Alarm Indication Signal...........................................15 SDH/SONET:LP Remote Defect Indication/Virtual Tributary Remote Defect Indication.................................................................16 SDH/SONET:LP-RFI/Virtual Tributary-RFI................................16 SDH/SONET:LP-Trace Mismatch/ Virtual Tributary Trace Mismatch........................................................................................17 SDH/SONET:LP-Unloaded/Virtual Tributary Unloaded................18 SDH/SONET:LP Label Mismatch/Virtual Tributary Label Mismatch18 SDH:VC-4 Signal Failure.......................................................19 SDH:VC-4 Signal Deterioration..............................................19 SDH/SONET:Severe B1 Error Code ........................................20 SDH/SONET:Severe B2 Error Code ........................................20 SDH/SONET:Severe B3 Error Code ........................................21 SDH/SONET:Severe BIP-2 Error Code ....................................22 SDH/SONET:MS-Remote Error Indication ................................22 SDH/SONET:HP-Remote Error Indication ................................23 SDH/SONET:HP Signal Failure ...............................................23 SDH/SONET:HP Signal Deterioration ......................................24 E3S subcar transmitter direction loss of signal .........................24 Signal of Receiving End of E3S Daughter Card is Lost ...............25 OFF Alarm..........................................................................25

E3S Daughter Card Receives Alarm Signal Indication ............... 26 Remote Failure Indication..................................................... 26 Board CPU overloaded ......................................................... 27 Excess Temperature of CPU on Board..................................... 27 Board FLASH faults ............................................................. 28 Inter-shelf media plane links abnormal .................................. 28 Capacity of intra-shelf control plane TRUNK communication is insufficient ......................................................................... 29 Incorrect Connection of GE Optical Transceiver Module with Board Slots on Peer-end ............................................................... 29 Internal Port of Board Is Down.............................................. 29 Board Doesn't Exist/ CPU is Long in Reset Status..................... 30 Input Clock Abnormal .......................................................... 31 A (CPU) Subcard Is Online, but Is not Configured in Database ... 31 A (CPU) Subcard Is not Online, but Has Been Configured by Database ........................................................................... 31 External Port of Board Is Down ............................................. 32 Exceptional Internal Media Plane Communication..................... 33 DSP Resource Unavailable .................................................... 33 Usage Rate of Board Hard Disk above Threshold...................... 34 Hard Disk Broken................................................................ 34 TRUNK port down ............................................................... 34 Broad Not Tightly Inserted ................................................... 35 SMBUS Error ...................................................................... 35 Error in Rear Board That Mismatches With Front Board............. 36 LVDS Signal Unlocked.......................................................... 36 High Error Rate of Optical Interface ....................................... 36 FPGA Exception .................................................................. 37 Port Link Down ................................................................... 37 Hardware Reliability Down.................................................... 37 PLL Work Mode Abnormal..................................................... 38 The Channel in a Subcard Is Down ........................................ 38 Subcard Abnormal .............................................................. 38 Phase-lock Loop Unlock ....................................................... 39 High Error Rate at E1 Bottom Layer ....................................... 39 Control Plane Ports of Backplane Joining Switching Chip Is Exceptional ........................................................................ 39 Type A Fault on Board (GPS) Phase-lock Equipment ................. 40 Type B Fault on Board (GPS) Phase-lock Equipment ................. 40 Phase-lock Equipment of This Board (GPS) Is in Power-on Status........................................................................................ 40

DSP Reports Exceptions After Detection..................................40 Loss of Clock When Input to Sub-card ....................................41 Error of LVDS Path Frame Detection.......................................41 Tier1 Network Link Loopback Diagnosis Failure ........................42 Physical link down between master port and slave port .............42 Media interactive GE port link down .......................................42 Board device is abnormal .....................................................43 Cx29704 Runs Abnormally....................................................43 Physical Channel for Data Transmission Blocked ......................43 2350 receive hardware error .................................................44 Fe IMA Group is in config-aborted state (because of unmatched Frame length).....................................................................44 All High-Speed Links Between Line Card and Package Switching Board Are out of Synchronism...............................................45 APS Channels Mismatched ....................................................45 APS Modes Mismatched........................................................46 Board Resets for APS Configuration Changes ...........................46 No Response to Requesting Database for Secondary Forwarding Table Information................................................................47 No Response to Requesting the System for Secondary Forwarding Table Port Information .........................................................47 Resource board Unable to Get Secondary Forwarding Table from UIM...................................................................................48 Internal Connection Chip Faults of TSNB.................................48 Semi-Fixed Connection Error.................................................48 CLKG 32M output clock lost ..................................................49 CLKG 32M8K output clock lost...............................................49 CLKG 16M output clock lost ..................................................49 CLKG 16M8K output clock lost...............................................49 CLKG PP2S Output Clock Lost................................................50 PP2S clock reference lost......................................................50 16CHIP clock reference lost ..................................................50 All clock bases had lost ........................................................51 CLKG I2MB0 clock base lost ..................................................51 CLKG I2MB1 clock base lost ..................................................51 CLKG I2MHZ0 clock base lost ................................................51 CLKG I2MHZ1 clock base lost ................................................52 CLKG I8KBASE clock base lost...............................................52 CLKG I8KGPS clock base lost ................................................52 CLKG I8KUIM clock base lost.................................................52 Clock reference source lost (Level 3 alarm) .............................53

Clock reference source lost (Level 2 alarm)............................. 53 Clock reference source lost (Level 1 alarm)............................. 53 Clock Base Lost .................................................................. 54 CLKG board PLL out-of-lock .................................................. 54 Output clock lost................................................................. 54 DSP over load .................................................................... 54 80g chip abnormal .............................................................. 55 SCCP SSN is invalid............................................................. 55 Broadband link congestion ................................................... 56 Broadband link overload ...................................................... 57 MTP2 link transmission overload............................................ 57 MTP3 office inaccessible ....................................................... 58 MTP3 link unavailable .......................................................... 59 MTP3 cluster inaccessible ..................................................... 59 MTP3 link congestion ........................................................... 60 M3UA office inaccessible ...................................................... 61 SUA SSN is invalid .............................................................. 62 SUA office inaccessible......................................................... 63 M2PA Link Broken ............................................................... 63 BSC IP configuration error.................................................... 64 T-net center fault................................................................ 65 EPU and RPU Version Not Match............................................ 65 Abnormal Status in SDH/SONET............................................ 65 SDH/SONET:Excessive Error Code ......................................... 66 ATM Communication Abnormally ........................................... 67 MCC Abnormal.................................................................... 67 MS APS Channel gets errors ................................................. 67 Dry Contact Alarm 1............................................................ 68 Dry Contact Alarm 2............................................................ 68 Dry Contact Alarm 3............................................................ 68 Dry Contact Alarm 4............................................................ 68 Dry Contact Alarm 5............................................................ 69 Dry Contact Alarm 6............................................................ 69 Dry Contact Alarm 7............................................................ 69 Dry Contact Alarm 8............................................................ 69 Dry Contact Alarm 9............................................................ 70 Dry Contact Alarm 10 .......................................................... 70 Dry Contact Alarm 11 .......................................................... 70 Dry Contact Alarm 12 .......................................................... 70

EAM Dry Contact Alarm 1 .....................................................71 EAM Dry Contact Alarm 2 .....................................................71 EAM Dry Contact Alarm 3 .....................................................71 EAM Dry Contact Alarm 4 .....................................................71 EAM Dry Contact Alarm 5 .....................................................72 EAM Dry Contact Alarm 6 .....................................................72 EAM Dry Contact Alarm 7 .....................................................72 EAM Dry Contact Alarm 8 .....................................................72 CMM/CMB FLASH programming failure ...................................73 Power overvoltage/undervoltage alarm...................................73 13M input clock failure .........................................................73 Frame No. inconsistent between software and hardware ...........73 FCLK clock failure................................................................74 SYNCLK clock failure............................................................74 Master and slave communication link failure............................74 Standby CMM/CMB board not present.....................................75 Standby CMM/CMB board abnormal .......................................75 CMM/CMB power failure alarm...............................................75 A interface E1 Rx carrier alarm..............................................76 A interface E1 Rx frame not synchronized ...............................76 A interface E1 Tx forward sliding indication .............................77 A interface E1 Tx backward sliding indication...........................77 A interface E1 Rx forward sliding indication .............................78 A interface E1 Rx backward sliding indication...........................79 B interface E1 Rx carrier alarm..............................................79 B interface E1 Rx frame not synchronized ...............................80 B interface E1 Tx forward sliding indication .............................81 B interface E1 Tx backward sliding indication...........................81 B interface E1 Rx forward sliding indication .............................82 B interface E1 Rx backward sliding indication...........................82 C interface E1 Rx carrier alarm..............................................83 C interface E1 Rx frame not synchronized ...............................84 C interface E1 Tx forward sliding indication .............................84 C interface E1 Tx backward sliding indication...........................85 C interface E1 Rx forward sliding indication .............................86 C interface E1 Rx backward sliding indication ..........................86 D interface E1 Rx carrier alarm..............................................87 D interface E1 Rx frame not synchronized...............................87 D interface E1 Tx forward sliding indication .............................88

D interface E1 Tx backward sliding indication .......................... 89 D interface E1 Rx forward sliding indication ............................ 89 D interface E1 Rx backward sliding indication.......................... 90 E interface E1 Rx carrier alarm.............................................. 91 E interface E1 Rx frame not synchronized............................... 91 E interface E1 Tx forward sliding indication ............................. 92 E interface E1 Tx backward sliding indication .......................... 92 E interface E1 Rx forward sliding indication............................. 93 E interface E1 Rx backward sliding indication .......................... 94 F interface E1 Rx carrier alarm.............................................. 94 F interface E1 Rx frame not synchronized ............................... 95 F interface E1 Tx forward sliding indication ............................. 96 F interface E1 Tx backward sliding indication........................... 96 F interface E1 Rx forward sliding indication ............................. 97 F interface E1 Rx backward sliding indication .......................... 97 G interface E1 Rx carrier alarm ............................................. 98 G interface E2 Rx frame not synchronized .............................. 99 G interface E1 Tx forward sliding indication............................. 99 G interface E1 Tx backward sliding indication ........................ 100 G interface E1 Rx forward sliding indication .......................... 101 G interface E1 Rx backward sliding indication........................ 101 H interface E1 Rx carrier alarm ........................................... 102 H interface E3 Rx frame not synchronized............................. 102 H interface E1 Tx forward sliding indication........................... 103 H interface E1 Tx backward sliding indication ........................ 104 H interface E1 Rx forward sliding indication........................... 104 H interface E1 Rx backward sliding indication ........................ 105 Temperature alarm ........................................................... 106 Fan absent....................................................................... 106 Fan control board CPU alarm .............................................. 106 Fan control board CPU alarm .............................................. 106 Fan temperature alarm ...................................................... 107 Fan 1 alarm ..................................................................... 108 Fan 2 alarm ..................................................................... 108 Fan control board alarm..................................................... 109 LNA alarm........................................................................ 109 Tower amplifier power alarm .............................................. 110 SWR of AEM HYCOM minor alarm ........................................ 110 SWR of AEM HYCOM major alarm ........................................ 110

AEM power alarm(BTS V2).................................................. 111 AEM type alarm(BTS V2) .................................................... 111 AEM absent(BTS V2).......................................................... 111 AEM power alarm .............................................................. 112 LNA0 alarm ...................................................................... 112 LNA1 alarm ...................................................................... 112 Tower Amplifier0 power alarm............................................. 112 Tower Amplifier1 power alarm............................................. 113 SWR of AEM HYCOM minor alarm......................................... 113 SWR of AEM HYCOM major alarm ........................................ 113 AEM type alarm ................................................................ 114 AEM Not-in-position alarm .................................................. 114 CHP DSP0 of TPU initialization failure(BTS V2) ....................... 114 CHP DSP1 of TPU initialization failure ................................... 115 CHP DSP2 of TPU initialization failure ................................... 115 CHP DSP3 of TPU initialization failure ................................... 116 Uplink of ADC chip initialization failure.................................. 116 Uplink of ADC resource can't be used ................................... 117 CIP resource can't be used ................................................. 117 Uplink failure .................................................................... 117 TPU FLASH Memory failure(BTS V2) ..................................... 118 Watchdog of TPU CHP DSP0 overflow(BTS V2)....................... 118 Watchdog of TPU CHP DSP1 overflow ................................... 118 Watchdog of TPU CHP DSP2 overflow ................................... 119 Watchdog of TPU CHP DSP3 overflow ................................... 119 Watchdog of FUC overflow.................................................. 120 CIP of TPU initialization failure............................................. 120 Watchdog of TPU CIP overflow ............................................ 120 Clock alarm for TPU and CMM.............................................. 121 TPU power alarm(BTS V2) .................................................. 121 TPU frame No. alarm ......................................................... 121 TPU CHP DSP0 initialization failure ....................................... 122 ADC resource unavailable ................................................... 122 CHP frame error................................................................ 123 BURST interrupt error ........................................................ 123 TPU FLASH memory failure ................................................. 123 TPU CHP DSP0 watchdog overflow ....................................... 124 CU intialization failure ........................................................ 124 TPU power alarm............................................................... 124

TPU's FN alarm................................................................. 125 Rx PLL1 unlock ................................................................. 125 Rx PLL2 unlock ................................................................. 125 Tx PLL1 unlock ................................................................. 126 Tx PLL2 unlock ................................................................. 126 52M referenced clock PLL unlock ......................................... 126 Tx IF PLL unlock ............................................................... 127 EEPROM resource can't be used .......................................... 127 FPGA interface failure ........................................................ 127 PA VSWR alarm(BTS V2).................................................... 127 PA overtemperature minor alarm(BTS V2) ............................ 128 PA overtemperature major alarm(BTS V2) ............................ 128 PA output power alarm ...................................................... 129 PA power overvoltage........................................................ 129 PA power lower voltage...................................................... 129 Downlink checksum error of DLRC_AL1 ................................ 130 DUC chip initialization failure .............................................. 130 80w PA VSWR alarm.......................................................... 130 80w PA overtemperature.................................................... 130 80w PA overtemperature major alarm.................................. 131 80w PA output power alarm................................................ 131 80w PA power overvoltage ................................................. 132 80w PA power lower voltage............................................... 132 80w PA absent ................................................................. 132 TXIF unlock...................................................................... 133 TPF unlock ....................................................................... 133 TXRF unlock ..................................................................... 133 RXRF unlock..................................................................... 133 13 MHz clock lost .............................................................. 134 60 ms clock lost................................................................ 134 8M clock of HW lost........................................................... 135 8K clock of HW lost ........................................................... 135 52 MHz clock lost .............................................................. 135 First ADC clock lost ........................................................... 136 Second ADC clock lost ....................................................... 136 PA power overvoltage alarm ............................................... 136 PA power undervoltage alarm ............................................. 137 PA VSWR alarm ................................................................ 137 PA temperature minor alarm............................................... 137

PA temperature major alarm............................................... 138 PA forward power(3db) alarm ............................................. 138 RTU power alarm .............................................................. 138 RTU power temperature alarm ............................................ 139 RTU power output overvoltage alarm ................................... 139 RTU power input failure alarm............................................. 139 IQ calibration parameters abnormal alarm ............................ 140 EAM heat exchanger alarm ................................................. 140 EAM TRX layer fan-4 alarm ................................................. 140 EAM AEM layer axis-flow fan alarm ...................................... 140 EAM smoke alarm.............................................................. 141 EAM waterproof alarm........................................................ 141 EAM lightning protection alarm............................................ 141 EAM backdoor access control alarm...................................... 141 EAM frontdoor access control alarm ..................................... 142 EAM PWR monitoring unit alarm .......................................... 142 EAM heat exchanger electric heater alarm............................. 142 EAM heat exchanger control board alarm .............................. 143 EAM heat exchanger external circulation fan 2 alarm .............. 143 EAM heat exchanger external circulation fan 1 alarm .............. 143 EAM heat exchanger internal circulation fan 2 alarm............... 144 EAM heat exchanger internal circulation fan 1 alarm............... 144 EAM heat exchanger 485 communication alarm ..................... 144 EAM temperature alarm ..................................................... 145 EAM TRX layer mixed-flow fan 1 alarm ................................. 145 EAM TRX layer mixed-flow fan 2 alarm ................................. 145 EAM TRX layer mixed-flow fan 3 alarm ................................. 145 Power undervoltage alarm .................................................. 146 Inner fan 2 alarm (for M8202)............................................. 146 Inner fan 1 alarm (for M8202)............................................. 147 Outer fan 2 and fan 4 alarm (for M8202) .............................. 148 Outer fan 1 and fan 3 alarm (for M8202) .............................. 148 Rack temperature minor alarm............................................ 148 Rack temperature major alarm............................................ 149 Layer 3 fan 1 alarm (for M8206).......................................... 149 Layer 3 fan 2 alarm (for M8206).......................................... 149 Layer 3 fan 3 alarm (for M8206).......................................... 150 Layer 2 fan 1 alarm (for M8206).......................................... 150 Layer 2 fan 2 alarm (for M8206).......................................... 150

Layer 2 fan 3 alarm (for M8206) ......................................... 151 Layer 1 fan 1 alarm (for M8206) ......................................... 151 Layer 1 fan 2 alarm (for M8206) ......................................... 151 Layer 1 fan 3 alarm (for M8206) ......................................... 152 FR device failure ............................................................... 152 FR congestion................................................................... 153 MSC overload control alarm at FUC mode ............................. 153 CPU overload control alarm at FUC mode.............................. 153 Signaling point congestion control alarm at FUC mode............ 154 MSC overload control alarm at SYS mode ............................. 154 CPU overload control alarm at SYS mode.............................. 154 Signaling point congestion control alarm at SYS mode............ 155 CCCH overload control ....................................................... 155 PCCCH overload control ..................................................... 155 NSVC failure alarm............................................................ 156 alarm of CRC verifying of power amplifier parameters error..... 156 DSP initialization failure ..................................................... 156 Tx PLL unlock ................................................................... 157 FLASH memory fault ......................................................... 157 Run abnormity of DSP ....................................................... 157 FPGA interface fault........................................................... 158 CHP frame fault ................................................................ 158 Wrong receive channel of RF .............................................. 158 Wrong parameter configuration for EEPROM.......................... 159 RF channel and HTRG board unconformity ............................ 159 OMP reboot alarm ............................................................. 159 TRX Man Block ................................................................. 159 Resource cannot be used of RF Channel ............................... 160 SYNCLK locked fail alarm ................................................... 160 Status of TX1 filter alarm ................................................... 160 Status of TX2 filter alarm ................................................... 161 Status of TX3 filter alarm ................................................... 161 Status of TX4 filter alarm ................................................... 161 FCU power undervoltage alarm ........................................... 161 FCU minor alarm............................................................... 162 Hard disk initialization failure.............................................. 162 The clock alarm about transmission of CCI board Abis-E1 ....... 162 The local working clock alarm of CCI board........................... 163 The clock alarm about transmission of CCI board 13M ............ 163

CCI opposite board alarm ................................................... 163 IQ FPGA internal clock alarm............................................... 164 IQ FPGA light interface alarm .............................................. 164 IQ FPGA LVDS interface alarm............................................. 164 IQ FPGA internal data alarm ............................................... 164 13M,61.44M clock lost alarm............................................... 164 60ms clock lost alarm ........................................................ 165 26MHz and 52MHz lost of clock alarm................................... 165 the failure examination alarm of the 60ms uplink frame.......... 166 checking block data error alarm........................................... 166 up link LVDS SERDES lost lock alarm ................................... 166 FN error alarm .................................................................. 167 receiving channel frequent alarm......................................... 167 transmiting channel frequent alarm...................................... 167 the lost alarm of 60ms ....................................................... 167 output power less than 6DB................................................ 168 HYCOM major alarm .......................................................... 168 the input power is abnormal ............................................... 168 out of power alarm ............................................................ 168 the lost of signal of the light port 4 alarm ............................. 169 the lost of signal of the light port 2 alarm ............................. 169 light port 2 error,Loss of Frame alarm .................................. 169 the lost of signal of the light port 1 alarm ............................. 169 light port 1 error,Loss of Frame alarm .................................. 170 FR device failure ............................................................... 170 the version checking CRC error alarm................................... 170 Diversity antenna lost ........................................................ 170 Diversity antenna identical.................................................. 171 A Interface Resource Statistics Alarm ................................... 171 NSVC Resource Statistics Alarm........................................... 172 TCH Resource Statistics Alarm............................................. 172 Assignment Failure ............................................................ 172

Communication Alarms ................................................ 173 Exceptional Connection Setup ............................................. 173 Trunk Frame Loss.............................................................. 173 Trunk Signal Loss .............................................................. 174 Trunk Alarm Indication....................................................... 174 Trunk Multi-frame Loss ...................................................... 175 Far-End CRC Multi-frame Alarm Indication ............................ 175

Far End Alarm .................................................................. 175 Communication Link between Active and Standby Boards Off .. 176 Incorrect FE Routing Connection ......................................... 176 Board HW Error ................................................................ 177 Communication between environment monitoring board and OMP board abnormal ................................................................ 178 RAWMACIP Channel Communication Exception...................... 178 test pack check abnormal................................................... 179 MAC Address Conflict Exists in Boards of Same Shelf............. 179 IPMAC Conflict When OSS Detects Control Plane.................... 179 dualhome office block........................................................ 180 dualhome link block .......................................................... 180 dualhome association block ................................................ 181 Recive bad packet............................................................. 181 Faulty Frames Received by FE/GE/ATM/MP/POS/E1 Port ......... 182 Faulty Frames Received by Internal Switching Interface Faulty 183 HDLC unavailable.............................................................. 183 UID unavailable ................................................................ 184 UID unavailable ................................................................ 184 Far End IMA Group is in Startup state .................................. 185 FE is in blocked state......................................................... 185 Timing of Near-End IMA Group Failure ................................. 185 FE RXLSM is in Unusable State............................................ 186 Implementation specific TX fault declared at the NE ............... 186 Near-End Sending Link Broken............................................ 186 Near-End Sending Link Broken............................................ 187 LODS Alarm of Near-End Receiving Link ............................... 187 RDI Alarm of Near-End Receiving Link.................................. 187 Near-End Receiving Link Faults ........................................... 188 Implementation specific Rx failed declared at the NE.............. 188 Near-End Receiving Link Broken.......................................... 188 Far end TXLSM is in Unusable State..................................... 189 Fe IMA Group's part of links are possibly arp looped back ....... 189 Remote Receiving Link ID Mismatched ................................. 189 BFD Session Interrupted .................................................... 190 Abis link broken................................................................ 190 Control plane communication abnormal between board and its home module ................................................................... 191 Control plane communication abnormal between MP and OMP . 192 Association link broken ...................................................... 192

STC office inaccessible ....................................................... 193 PPP_UID Link Down ........................................................... 194 PPP Link Down .................................................................. 194 HDLC unavailable .............................................................. 195 UID unavailable ................................................................ 195 Association path broken ..................................................... 196 PPP link broken ................................................................. 196 BSCIP configuration error in database .................................. 197 MGW not registered........................................................... 198 Dual Homing Office Blocked ................................................ 198 Dual Homing Link Blocked .................................................. 199 Dual Homing Association Blocked......................................... 199 Trunk error....................................................................... 200 Trunk abnormal ................................................................ 200 The rate of error code in a matelink is high at GUIM ............... 201 FE Link Error Alarm ........................................................... 201 Link Broken Between Server and Alarmbox ........................... 201 HW link broken ................................................................. 202 Master rack communication link alarm.................................. 203 Communication link alarm between master and slave rack (left)...................................................................................... 203 Communication link alarm between master and slave rack (right)...................................................................................... 203 A interface E1 remote alarm ............................................... 204 B interface E1 remote alarm ............................................... 204 C interface E1 remote alarm ............................................... 205 D interface E1 remote alarm ............................................... 205 E interface E1 remote alarm................................................ 206 F interface E1 remote alarm................................................ 206 G interface E1 remote alarm ............................................... 207 H interface E1 remote alarm ............................................... 207 LAPD communication link between FUC and BSC break ........... 208 Communication link between CMM and FUC break(BTS V2) ..... 208 HDLC communication link between CMB and FUC broken ........ 209 LAPD communication link between FUC and BSC broken ......... 210 CU parameter configuration error ........................................ 210 Communication broken between EAM and CMB...................... 211 BSC LAPD communication link broken .................................. 211 Site LAPD communication link broken................................... 211 Cell interruption alarm ....................................................... 212

Front-end communication link broken alarm ......................... 212 Control link broken............................................................ 213 Operation link broken(CS).................................................. 213 Operation link broken(PS) .................................................. 213

Handling Alarms ......................................................... 214 Process Instance Configuration Error ................................... 214 T Network Connection Not Conform to Configuration .............. 214 DB Config Doesn't Fit for Device.......................................... 215 OMC Gateway Mask Different from DBs................................ 215 Alarm Due to Inconsistent Area Code................................... 215 Alarm Due to Inconsistent Mac Address of Background OMP(OMC)...................................................................................... 216 Alarm Due to Inconsistent Mac Address of Background OMP(OMC)...................................................................................... 216 Alarm Due to Inconsistent MP Type ..................................... 216 Startup File Does Not Exist ................................................. 217 OMP GateWay IP Different from DBs.................................... 217 OMC Server IP Different from Dbs ....................................... 217 OMC Gateway Mask Different from DBs................................ 217 OMP Config Changes ......................................................... 218 Inconsistent Office ID Settings of DIP Switch ........................ 218 Port Work Mode Doesn't Match Settings ............................... 218 Formats of audio resource inconsistent................................. 219 Version Switches While Board Doesn't Reset ......................... 219 Function EPLD Update Failure ............................................. 220 Inconsistent BOOT/EPLD Version No. with Database Configurations...................................................................................... 220 Boot Version Fails to Be Written to Backup Region ................. 220 Microcode Is Abnormal ...................................................... 221 PVC Fault......................................................................... 221 FE reports unacceptable configuration parameters(M size) ...... 222 Fe IMA Group is in config-aborted state (because of unmatched symmertry mode) ............................................................. 222 Fe IMA Group is in config-aborted state (because of unmatched OAM lable)....................................................................... 222 Fe IMA Group is in config-aborted state (because of other reseans)...................................................................................... 223 FE is in Insufficient links State ............................................ 223 Near-End IMA Group Configuration Failure............................ 223 NE Group is in Insufficient links State .................................. 224 Number of Alarms Over Threshold ....................................... 224

Board Connection Check is Off............................................. 224 Access DSP's HPI memory error ......................................... 225 The config data of sntp in DBS is wrong................................ 225 The Client Of Sntp Failed In Fetching Net Time ...................... 225 SNTP failure ..................................................................... 226 Number of management module alarms exceeds the threshold 227 NTP time exceeds threshold ................................................ 227 brs main config request timeout .......................................... 228 brs main epu register timeout ............................................. 228 Database config is different from file named bootcfg ini. ......... 229 Wrong Parameter configuration for TPU Ch0.......................... 229 Wrong Parameter configuration for TPU Ch1.......................... 229 Wrong Parameter configuration for TPU Ch2.......................... 230 Wrong Parameter configuration for TPU Ch3.......................... 230 Wrong Parameter configuration for TPU Ch4.......................... 231 Wrong Parameter configuration for TPU Ch5.......................... 231 Wrong Parameter configuration for TPU Ch6.......................... 231 Wrong Parameter configuration for TPU Ch7.......................... 232 Cell configuration parameter mismatch(BTS V2) .................... 232 Software version of FUC mismatch(BTS V2) .......................... 233 Software version of CHP mismatch(BTS V2) .......................... 233 L3 Software of FUC No Response(BTS V2)............................. 233 Wrong Parameter configuration for CIP................................. 234 Software version of CIP mismatch........................................ 234 Wrong parameter configuration for TRM Channel 0................. 234 Wrong parameter configuration for TRM Channel 1................. 235 Wrong parameter configuration for TRM Channel 2................. 235 Wrong parameter configuration for TRM Channel 3................. 236 Wrong parameter configuration for TRM Channel 4................. 236 Wrong parameter configuration for TRM Channel 5................. 236 Wrong parameter configuration for TRM Channel 6................. 237 Wrong parameter configuration for TRM Channel 7................. 237 Cell configuration parameter mismatch................................. 238 FUC Software version mismatch .......................................... 238 CHP Software version mismatch .......................................... 238 CU Software version mismatch............................................ 239 FUC L3 Software no response.............................................. 239 Parameter configuration mismatch....................................... 239 Parameter configuration failure of AD6537 ............................ 240

Environment Alarms .................................................... 240 Cell delineation do not synchronization about cell on E1 link... 240 RACK Temperature Over Alarm Threshold............................. 240 RACK Temperature Lower Than Alarm Threshold ................... 241 House temperature is higher than high threshold................... 241 House temperature is lower than high threshold .................... 242 Any one of rack voltage inputs above threshold..................... 242 Any one of rack voltage inputs below threshold ..................... 242 Temperature in equipment room above threshold .................. 243 Temperature in equipment room below threshold .................. 243 Rack fans faults ................................................................ 244 Rack door access control alarm........................................... 244 Smoke alarm.................................................................... 244 Infrared alarm.................................................................. 245 Lightning alarm ................................................................ 245 SNTP server invalid ........................................................... 245 Fault on Board (GPS)......................................................... 246

QoS Alarms................................................................ 246 Inter-board Message Communication Flow Rate Over Alarm Threshold ........................................................................ 246 Inter-board Message Communication DSP overload (Level 1 alarm)...................................................................................... 247 Inter-board Message Communication DSP overload (Level 2 alarm)...................................................................................... 247 Inter-board Message Communication DSP overload (Level 3 alarm)...................................................................................... 247 MTP2 link reception overload .............................................. 248 Association congested ....................................................... 248 STC office congested ......................................................... 249

Appendix A...................................................................251

Abbreviations...............................................................251

Tables...........................................................................259

Index............................................................................261

Confidential and Proprietary Information of ZTE CORPORATION i

About This Manual

Purpose

This manual describes BSS (V6.20) related alarm messages in terms of alarm cause, influence, and handling suggestions. You can analyze, locate, and handle faults by referring to this document.

Intended Audience

This manual is intended for engineers and technicians who perform operation activities on the ZXG BSS.

Prerequisite Skill and Knowledge

To use this manual effectively, users should have a general understanding of wireless telecommunications technology. Familiarity with the following is helpful:

ZXG system and its various components

User interfaces on the Mobile Switching Center (MSC)

Local operating procedures

What Is in This Manual

This manual contains the following chapters:

T AB L E 1 C H A P T E R S U M M AR Y

Chapter Summary

Chapter 1, Alarm Messages

Introduces the basic concepts of BSS (V6.20) alarms, including alarm definition, severity, handling suggestions, and classification

Chapter 2, Alarm Message Description

Describes the BSS (V6.20) alarms in terms of alarm cause, influence on the system,

ZXG10 BSS (V6.20) Base Station Subsystem Alarm Handling Manual

ii Confidential and Proprietary Information of ZTE CORPORATION

Chapter Summary

and handing flow.

Related Documentation

The following documentation is related to this manual:

ZXG10 iBSC (V6.20) Base Station Controller Documentation Guide

ZXG10 iBSC (V6.20) Base Station Controller Technical Manual

ZXG10 iBSC (V6.20) Base Station Controller Hardware Manual

ZXG10 iBSC (V6.20) Base Station Controller Installation Manual

ZXG10 iBSC (V6.20) Base Station Controller Performance Counters Manual Volume I

ZXG10 iBSC (V6.20) Base Station Controller KPI Reference Manual

ZXG10 iBSC (V6.20) Base Station Controller Maintenance Manual (Routine Maintenance)

ZXG10 iBSC (V6.20) Base Station Controller Maintenance Manual (Troubleshooting)

ZXG10 iBSC (V6.20) Base Station Controller Maintenance Manual (Emergency Maintenance)

ZXG10 BSS (V6.20) Base Station Subsystem Notification Handling Manual

ZXG10 BSS (V6.20) Base Station Subsystem OMM Sofrware Installation Manual

ZXG10 BSS (V6.20) Base Station Subsystem Configuration Manual (Initial Configuration Guide)

ZXG10 BSS (V6.20) Base Station Subsystem Configuration Manual (Feature Configuration Guide)

ZXG10 BSS (V6.20) Base Station Subsystem MML Command Manual

ZXG10 BSS (V6.20) Base Station Subsystem Radio Parameters Manual

ZXG10 BSS (V6.20) Base Station Subsystem Operation Manual (Diagnosis and Test)

ZXG10 BSS (V6.20) Base Station Subsystem Operation Manual (Signaling Tracing)

About This Manual

Confidential and Proprietary Information of ZTE CORPORATION iii

ZXG10 iBSC (V6.20) Base Station Controller Performance Counter Manual - Volume II

ZXG10 iBSC (V6.20) Base Station Controller Performance Counter Manual - Volume III

In this manual, ZXG10 iBSC (V6.20) and ZXG10 BSC (V2) are referred to as BSC, and iBSC refers to only ZXG10 iBSC.

Conventions

ZTE documents employ the following typographical conventions.

T AB L E 2 TY P O G R AP H I C AL C O N V E N T I O N S

Typeface Meaning

Italics References to other Manuals and documents.

Quotes Links on screens.

Bold Menus, menu options, function names, input fields, radio button names, check boxes, drop-down lists, dialog box names, window names.

CAPS Keys on the keyshelf and buttons on screens and company name.

Constant width Text that you type, program code, files and directory names, and function names.

[ ] Optional parameters.

{ } Mandatory parameters.

| Select one of the parameters that are delimited by it.

Note: Provides additional information about a certain topic.

Checkpoint: Indicates that a particular step needs to be checked before proceeding further.

Tip: Indicates a suggestion or hint to make things easier or more productive for the reader.

T AB L E 3 M O U S E OP E R AT I O N C O N V E N T I O N S

Typeface Meaning

Click Refers to clicking the primary mouse button (usually the left mouse button) once.

Double-click Refers to quickly clicking the primary mouse button (usually the left mouse button) twice.

Right-click Refers to clicking the secondary mouse button (usually the right mouse button) once.

Drag Refers to pressing and holding a mouse button and

Typographical Conventions

Mouse Operation

Conventions


iv Confidential and Proprietary Information of ZTE CORPORATION

Typeface Meaning

moving the mouse.

How to Get in Touch

The following sections provide information on how to obtain support for the documentation and the software.

If you have problems, questions, comments, or suggestions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830.

ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, you can contact us by e-mail at [email protected]; or you can fax your comments and suggestions to (86) 755 26772236. You can also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.

Customer Support

Documentation Support

Confidential and Proprietary Information of ZTE CORPORATION v

Declaration of RoHS Compliance

To minimize the environmental impact and take more responsibility to the earth we live, this document shall serve as formal declaration that the ZXG10 BSS (V6.20) Base Station Subsystem manufactured by ZTE CORPORATION is in compliance with the Directive 2002/95/EC of the European Parliament - RoHS (Restriction of Hazardous Substances) with respect to the following substances:

Lead (Pb)

Mercury (Hg)

Cadmium (Cd)

Hexavalent Chromium (Cr(VI))

PolyBrominated Biphenyls (PBBs)

PolyBrominated Diphenyl Ethers (PBDEs)

The usage of the above substances in ZXG10 BSS (V6.20) is explained in Table 4.

T AB L E 4 U S AG E E X P L A N A T I O N O F T H E H AZ AR D O U S S U B S T AN C E S I N ZXG10 BSS (V6 .20)

Hazardous substances

Names of Parts

Pb Hg Cd Cr(VI) PBBs PBDEs

System 0 0 0 0 0

Cables and Assembly 0 0 0 0 0 0

Auxiliary Equipment

Table Explanation:

0: The usage of the substance in all of the components is less than the allowed values given by 2002/95/EC standard.

: The usage of the substance in at least one of the components is beyond the allowed values given by 2002/95/EC standard.


vi Confidential and Proprietary Information of ZTE CORPORATION

The ZXG10 BSS (V6.20) Base Station Subsystem manufactured by ZTE CORPORATION meet the requirements of EU 2002/95/EC; however, some assemblies are customized to client specifications. Addition of specialized, customer-specified materials or processes which do not meet the requirements of EU 2002/95/EC may negate RoHS compliance of the assembly. To guarantee compliance of the assembly, the need for compliant product must be communicated to ZTE CORPORATION in written form.

This declaration is issued based on our current level of knowledge. Since conditions of use are outside our control, ZTE CORPORATION makes no warranties, express or implied, and assumes no liability in connection with the use of this information.

Confidential and Proprietary Information of ZTE CORPORATION 1

C h a p t e r 1

Alarm Message Summary

This chapter introduces the basic concepts of alarm messages, such as alarm code definition, alarm severity level, alarm handling suggestions, and alarm classification.

Alarm Code Definition An alarm code is defined by a string of 32 bits, which indicates the code values of a specified alarm message.

The range of GSM BSS alarm codes is as follows:

1 ~ 100000

198000000 ~ 198065535

198066000 ~ 198079999

198087000 ~ 198089999

198099800 ~ 198099801

Alarm Severity Level

Whenever there is a problem or fault during BSC operation, an alarm message appears. Usually, the alarm may last till the problems or faults are rectified.

According to severity, alarms are divided into four levels:

Critical (level 1)

Critical alarms cause the whole system to fail to operate or provide services. Measures must be taken to recover or eliminate the alarms immediately.

Major (level 2)

Severe alarms greatly affect the system operation or result in severe degradation in performance of service provision.


2 Confidential and Proprietary Information of ZTE CORPORATION

Measures must be taken to recover or eliminate the alarms as soon as possible.

Minor (level 3)

Major alarms do not greatly affect normal system operation and performance of service provision. Measures should be taken to recover or eliminate the alarms in time to avoid more severe alarms.

Warning (level 4)

Minor alarms have potential effects on normal system operation and performance of service provision. Diagnosis and measures should be taken to avoid more severe alarms.

In alarm level definition, the affected range only refers to the influence on a single item, that is, alarm level can be determined if a certain index, such as reliability and safety, reaches the specified range. If an alarm affects several indices, the alarm level should be upgraded.

Note:

Alarm levels can be modified in the Netnumen M31 EMS system based on the actual situations.

Generally, the default settings are comparatively reasonable. Be cautious when re-defining levels. It is not allowed to modify the settings at will.

In addition, some alarm levels are not defined. For these alarms, users can define their levels in actual situations.

Alarm Handling Pay attention to the following points when handling alarms:

After noting down the problem and symptom, system maintenance personnel should handle the alarms step by step by referring to the solutions described in this manual. Unless otherwise specified, end the alarm handling once the fault is rectified (that is, the alarm is recovered), or go to the next step if the problem persists.

If the alarm fails to be handled or recovered, contact the local ZTE office.

Chapter 1 Alarm Message Summary


Alarm Classification

The BSS related alarm messages on Netnumen M31 can be classified into the following six types:

Equipment alarms

Communication alarms

Handling alarms

Environment alarms

QoS alarms


C h a p t e r 2

Alarm Messages

This chapter gives a comprehensive and systematic description of the BSS (V6.20) related alarm messages, which helps system maintenance personnel to have a clear idea about every alarm generated at the BSS side. This chapter explains:

Alarm cause

Influence on the system

Handling method

Equipment Alarms Loss of Optical Transceiver Module Signal

Alarm code: 198000002

Alarm level: 2

The local-end RX fiber or peer-end TX fiber is not properly connected.

The local or peer-end optical transceiver module is faulty.

The peer end does not export optical signals forcibly.

The UIM has no TFS subcard or the board does not provide TDM optical interface function.

The link connected to the fiber circuit is broken and the service is interrupted.

1. Correctly insert the local and the peer-end fibers and check if the alarm is eliminated.

2. Replace the fiber and check if the alarm is eliminated.

Alarm Property

Alarm Cause

Influence

Handling Flow



3. Replace the local-end optical transceiver module and check if the alarm is eliminated.

4. Replace the peer-end optical transceiver module and check if the alarm is eliminated.

5. Check if the peer-end device forcibly inhabits output and if the alarm is eliminated.

UIM consists of UIMC, UIMU, and UIMT.

Ethernet Controller's Physical Link Off


Alarm level: 3

The network cables are not connected to the OMC1 and OMC2 interfaces on the rear shelf.

The network cable fails or looses.

The network interfaces on the shelf are faulty.

A link connected to the Ethernet is broken. The symptom is that the OMC interface is disconnected, that is, the communication between the NE and the EMS server is broken.

1. Check if network interface OMC2 is connected with network cables and if they are loose.

f If the cables loose, go to step 2.

f If the cables are not loose, go to step 3.

2. Insert cables to OMC2 on both ends again and check if the alarm is eliminated.

3. Replace the cables for OMC2 and check if the alarm is eliminated.

4. Use crossover cables and straight cables for OMC2 and check if the alarm is eliminated.

Trunk Link Is Used for CSU Loopback Test


Alarm level: 3

The equipment at end A sends CSU link building code to end B, and this trunk link is set to loopback at end B. Then, CSU test

Remarks

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Chapter 2 Alarm Messages


starts. If this trunk link is not used for CSU loopback test, this alarm won't be triggered.

The configured trunk link is congested.

After diagnosis and test, do some settings, where end A sends the command of canceling CSU loopback to end B.

Cell Delineation Not Synchronized


Alarm level: 3

The HEC is damaged. The cell cannot be located from the physical layer frame. This problem is usually triggered from bottom layer fault. It may also because the local and peer-end devices use different methods to process HEC.

The ATM communication becomes worse.

1. Check if other alarms are generated accompanying its occurrence. If yes, clear these alarms. If no, go to step 2.

2. Check if both ends are configured to SDH mode or SONET mode. If the modes are different, configure a correct signal mode.

Loss of Cell Delineation


Alarm level: 2

LCD is triggered after OCD lasts for 4 ms.

The ATM communication is broken.

1. Check if other alarms are generated accompanying its occurrence. If yes, clear these alarms. If no, go to step 2.

2. Check if both ends are configured to SDH mode or SONET mode. If the modes are different, configure a correct signal mode.

8K input clock lose


Alarm level: 3

The clock input of the shelf is abnormal.

The system communication fails.

Check whether the clock input line is correctly connected.

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow



16M Input Clock Lose


Alarm level: 3



Check whether the clock input line is correctly connected.

PP2S Clock Input Lose


Alarm level: 3



1. Check if the clock input lines are correctly connected.

2. Check if the subrack of output clock locks the GPS signals.

32M Clock lost in TSNB


Alarm level: 3

As the clock consists of 32M and 8K, the 32M clock alarm is generated when the clock (32M or 8K) jitters out of the specified range and affects the links.

The clock is unavailable.

The whole link is blocked if the alarm is generated. Therefore, the clock cannot be lost. Two boards for reporting alarms are used in a system, with one active and the other one standby. When a clock alarm is generated, the system switches over between the active and standby TSNBs.

For Tier 1 network, clock loss means loss of the whole link data. The link is recovered only after the clock becomes normal.

Check if the clock input lines are correctly connected.

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow



Clock Phase Does not Match When Inputting 8k,16M Clock to Backboard


Alarm level: 3

The clock input of the shelf is abnormal. The clock line is not reliably connected or faulty.



Clock Chip of This Board Is in Preheat Status


Alarm level: 3

The board experiences reset. The SETS chip and the constant-temperature crystal oscillator needs to be fully preheated.

The output clock is unstable.

Perform normal operations after the board is powered on. Wait until the clock board is completely preheated. Conduct the clock performance test only after the preheat ends.

Loss of Clock When Input to Board


Alarm level: 3




SDH/SONET fault


Alarm level: 2

The upstream optical transmission device is faulty.

The optical fiber transmission line is faulty.

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause



The fiber pigtail and flange between the local-end ODF (optical distribution frame) and equipment are faulty.

The local-end optical receiver is faulty.

All the trunk receiving signals that are transmitted through the SDH/SONET line are interrupted.

1. Use an optical power meter to check if the power for receiving optical signals is within the specified range (that is, -28 dBm ~ -8 dBm).

f If yes, go to step 3

f If no, it can be inferred that the optical module is faulty, and then go to step 2.

2. Replace the optical module or board. Check if the alarm is eliminated.

3. Use the transmitting end at the peer-end office to detect the transmitting optical signal. Check if the signal is within the specified range.

f If yes, go to step 5.

f If no, it can be inferred that the peer end is faulty, and then go to step 4.

4. Ask maintenance personnel to check the peer-end office. After the fault is rectified, check if the alarm is eliminated.

5. Something may be wrong with the transmission equipment. Ask maintenance personnel special for transmission equipment to do troubleshooting.

SDH/SONET:Loss of Frame


Alarm level: 2

The upstream SDH devices are faulty.


Ask SDH transmission equipment maintenance personnel to rectify the faults.

SDH/SONET: Regenerator Section Trace Mismatch/Section Trace Mismatch


Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property



Alarm level: 2

The optical fiber on the optical distribution frame is incorrectly connected during optical fiber cutover and scheduling, or the expected value is incorrectly set on the network management system.

The matching relations of the trunks and trunk signals are wrong.

1. Check if the fibers are correctly connected to the ODFs at local end and peer end.


f If no, correctly connect the fibers, and then check if the alarm is eliminated.

2. Check if the predefined values of section access point identifier at both ends are consistent. If not, set the same value. Check whether the alarm is eliminated.

SDH/SONET:MS-AIS,Line Alarm Indication Signal


Alarm level: 2

The upriver equipment has faults, such as LOS, LOF, and RS TIM.


Clear the primary alarm according to the alarm generated from the network node equipment in the corresponding multiplexing section.

SDH/SONET:Multiplexing Section Far-end Reception Failure/Line Far-end Reception Failure


Alarm level: 3

Errors occur on the uplink direction of the downstream equipment.

All the trunk sending signals that are transmitted through the SDH/SONET line are interrupted.

Clear the primary alarm according to the alarm generated from the network node equipment in the corresponding multiplexing section.

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow



SDH/SONET:Signal Failure


Alarm level: 2

For all the NEs in the multiplexing section where the board resides, the fiber pigtail connectors in the down direction are contaminated. The increase of transmission line attenuation or change in optical transmission mode leads to error code.

The ADM transmit device is faulty.

All the trunk receiving signals that are transmitted through the SDH/SONET line generate large numbers of alarms.

1. Check if the fiber pigtail heads are contaminated.

f If yes, clean the connectors, and then check if the alarm is eliminated.

f If no, go to step 2.

2. Use an optical power meter to detect the optical power attenuation of each connection point in the down direction in the multiplexing section and find if the value is excessive.

f If yes, adjust the attenuation, and then check if the alarm is eliminated.

f If no, go to step 3.

3. Ask maintenance personnel for transmission network to check if the ADM transmit device is faulty, end the alarm handing.

SDH/SONET:Signal Deterioration


Alarm level: 3

When signal degrade (SD) and signal fail (SF) occur at the same time, eliminate SF first. When SD occurs individually, it can be inferred that the ADM transmit device is faulty.

Some trunk receiving signals generate various alarms.

1. Eliminate SF, if it occurs. Check if the alarm is eliminated.

2. Check the optical fibers and fiber transceiver modules at the local and peer ends. Ensure that the optical fibers are well connected and that the optical transceiver module is not loose. Check if the alarm is eliminated.

3. Replace the fiber module or board. Check if the alarm is eliminated.

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow



4. Ask maintenance personnel to check the peer-end office and rectify the faults. Check if the alarm is eliminated.

5. Something may be wrong with the transmission equipment. Ask maintenance personnel special for transmission equipment to do troubleshooting.

SDH/SONET:Loss of AU-4 Pointer/Loss of Channel Pointer


Alarm level: 2

The upstream AU-4 pointer processing unit is faulty.


Ask maintenance personnel for transmission network to check if the AU-4 pointer processing unit of the upstream device is faulty.

SDH/SONET:AU-AIS/Channel-AIS


Alarm level: 2

The upstream VC-4 channel control unit is faulty.

All the trunk receiving signals that are transmitted through the SDH line are interrupted.

Ask maintenance personnel for transmission network to check if the VC-4 channel control unit of the upstream device is faulty.

SDH/SONET:HP-Trace Mismatch/ Patch Trace Mismatch


Alarm level: 2

The optical fiber on the ODF is incorrectly connected during optical fiber cutover and scheduling, or the expected value is incorrectly set on the network management system.

The matching relations of all the trunk signals are wrong.

1. Check if the fibers are correctly connected to the ODFs at local end and peer end.


Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow



f If no, correctly connect the fibers, and then check if the alarm is eliminated.

2. Check if the predefined values of VC-4 channel access point identifier (J1) at both ends are consistent. If not, set the same expected value. Check if the alarm is eliminated.

SDH/SONET:HP Unassembled/Path Unassembled


Alarm level: 2

During project installation, the internal cross connection of SDH network is not complete, or the SDTB/SDTB2 remote device is not equipped with the channel where SDTB/SDTB2 locates.


Ask maintenance personnel for transmission network to check if the VC-4 channel control unit (C2) of the upstream device is faulty.

DH/SONET:HP Label Mismatch/Path Label Mismatch


Alarm level: 2

During project installation, the internal cross connection of SDH network is not complete.


Ask maintenance personnel for transmission network to check if the upstream and downstream circuit configuration (C2) of the DXC devices in each station during the corresponding timeslot is correct.

SDH/SONET:HP Remote Reception Failure


Alarm level: 3

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause



The network node in VC-4 channel where the board locates is faulty.


Rectify the source fault according to the alarm generated on the network node equipment in the VC-4 channel where the board locates.

SDH/SONET:LOM


Alarm level: 2

The upstream VC-4 channel control unit is faulty.


Ask maintenance personnel for transmission network to check if the VC-4 channel control unit (H4) of the upstream device is faulty.

SDH/SONET: Loss of TU Pointer/Loss of Virtual Tributary Pointer


Alarm level: 4

The upstream TU pointer processing unit is faulty.

The trunks that the tributary bears stop receiving trunk signals.

Ask maintenance personnel for transmission network to check if the upstream TU-12 tributary pointer processing unit is faulty.

SDH/SONET:Tributary Unit Alarm Indication Signal/Virtual Tributary Alarm Indication Signal


Alarm level: 4

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property

Alarm Cause



The upstream TU-12 pointer processing unit is faulty. The fault may be TU AIS, TU LOM, TU LOP, or TU UNEQ.

All the E1 lines that the tributary bears stop receiving trunk signals.

Ask the maintenance personnel of transmission network to check if the upstream TU-12 tributary pointer processing unit is faulty.

SDH/SONET:LP Remote Defect Indication/Virtual Tributary Remote Defect Indication


Alarm level: 4

The local end TU-12 tributary malfunctions.

The devices on other nodes on the TU-12 tributary have tributary function faults.

The trunks that the tributary bears stop receiving send trunk signals.

1. Check if the optical fibers are correctly connected to the ODFs at the local end and peer end and if the processing of the TU-12 tributary pointer of the upstream equipment is faulty.

f If the connection is correct and there is no fault, go to step 3.

f If the connection is wrong or there is a fault, go to step 2.

2. Correctly connect the optical fibers. Check if the alarm is eliminated. This is upstream troubleshooting.

3. Check the alarms at both ends. Check the alarms at the peer end before checking those at the local end. A loopback operation can also be performed to locate the problem step by step from the local end equipment, transmission equipment, and peer end equipment. Two methods can be used, software loop and hardware loop. Check if the alarm is eliminated.

4. Replace the board. Check if the alarm is eliminated.

SDH/SONET:LP-RFI/Virtual Tributary-RFI


Alarm level: 4

Influence

Handling Flow

Alarm Property

Alarm Cause

Influence

Handling Flow

Alarm Property



The upstream TU-12 tributary control unit is faulty.

The trunks that the tributary bears stop receiving trunk signals.

1. Check if the optical fibers are correctly connected to the ODFs at the local end and peer end and if the processing of the TU-12 tributary pointer of the upstream equipment is faulty.

f If the connection is correct and there is no fault, go to step 3.

f If the connection is wrong or there is a fault, go to step 2.

2. Corre

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