BTS Alarm Descriptions - ST3 Telkomalfin.dosen.st3telkom.ac.id/.../12/WCDMA-BTS-Alarm-Descriptions.pdf · NetAct is used for handling the ... family, Nokia MetroSite WCDMA Base Station

BTS Alarm Descriptions

DN7095963Issue 2-0 en

# Nokia Corporation 1 (125)

Nokia WCDMA Base Station

BTS SW WN3.0 ED1

The information in this document is subject to change without notice and describes only theproduct defined in the introduction of this documentation. This document is intended for the useof Nokia's customers only for the purposes of the agreement under which the document issubmitted, and no part of it may be reproduced or transmitted in any form or means without theprior written permission of Nokia. The document has been prepared to be used by professionaland properly trained personnel, and the customer assumes full responsibility when using it.Nokia welcomes customer comments as part of the process of continuous development andimprovement of the documentation.

The information or statements given in this document concerning the suitability, capacity, orperformance of the mentioned hardware or software products cannot be considered binding butshall be defined in the agreement made between Nokia and the customer. However, Nokia hasmade all reasonable efforts to ensure that the instructions contained in the document areadequate and free of material errors and omissions. Nokia will, if necessary, explain issueswhich may not be covered by the document.

Nokia's liability for any errors in the document is limited to the documentary correction of errors.NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THIS DOCUMENTOR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL (INCLUDING MONETARYLOSSES), that might arise from the use of this document or the information in it.

This document and the product it describes are considered protected by copyright according tothe applicable laws.

NOKIA logo is a registered trademark of Nokia Corporation.

Other product names mentioned in this document may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.

Copyright © Nokia Corporation 2006. All rights reserved.

2 (125) # Nokia Corporation DN7095963Issue 2-0 en


Contents

Contents 3

1 About this document 7

2 Alarm handling 92.1 General 92.2 Instructions for solving problems 92.3 Blocking and locking 102.4 Identifying faulty units 10

3 Nokia UltraSite and MetroSite WCDMA BTS alarm table 25

4 Alarms 274.1 Active clock tuning fault 274.2 Antenna# connection fault 284.3 ATM, A2EA configuration error 294.4 ATM cell loss 294.5 ATM faulty 304.6 ATM processor faulty 314.7 ATM traffic overload 324.8 BS SW download or activation failed 324.9 BTS Blocked 334.10 BTS config error (all units in a cell must be of same freq) 344.11 BTS config error (different WTR variants cannot coexist in cell) 344.12 BTS config error (incorrect carrier candidates) 354.13 BTS config error (Not enough HW for LCR) 364.14 BTS config error (WAF overload, 50W not in dual WPA config) 364.15 BTS config error (WPA / WSMA version conflict in cell) 374.16 BTS config error (WSMA and WSMB cannot coexist) 384.17 BTS config error (WTR used as dual TRX behind WSMA) 384.18 BTS file error 394.19 BTS RNC interface signalling link failure 404.20 Cabinet door open 414.21 Cell blocked 414.22 Cell block rejected by RNC 424.23 Cell calibration failure 424.24 Cell power monitoring 434.25 Cell power parameter out of range 444.26 Commissioning parameter mismatch 444.27 Communication failure inside WSP 454.28 Step change of oven oscillator control over 10% of control range 464.29 Diversity branch masthead amplifier fault 484.30 DSC-bus failure 504.31 DSP failure in radiolink creation 514.32 Error in commissioning data 514.33 Error in file server during SW download 524.34 Failure in AXU initialization 534.35 Cooling fan speed has reduced from the set speed 53



Contents

4.36 Fatal alarm 544.37 Fault between WAM and WSP SFN (WSP) 554.38 Fault in ATM interface 564.39 Fault in OM and DSP SW interface 564.40 File corrupted in SW download 574.41 Flash operation failure 574.42 Gain adjust alarm 584.43 Incompatible SW version detected 594.44 Wrong unit type 604.45 Initial calibration not started because other cell not cleared 604.46 Invalid carrier in WTR 614.47 Invalid frequency channel for the BTS HW 624.48 LPA faulty 624.49 LPA gain fault 634.50 LPA input signal level is too high 634.51 LPA linearization fault 644.52 LPA power supply alarm 654.53 LPA reflected power too high 654.54 LPA temperature is dangerously high 664.55 Main branch masthead amplifier fault 674.56 Mains power break, running battery backup 674.57 Major alarm 684.58 Minor alarm 694.59 Missing NBAP cell parameters, defaults are used 694.60 No connection to AXU 704.61 No connection to unit 714.62 No connection to WEA and unable to detect External alarms 724.63 Non-fatal ATM traffic overload 734.64 Not enough WAF resources in LCR 734.65 Not enough WSP resources per cell 744.66 No WSM resources 754.67 Oven oscillator clock missing 754.68 Oven oscillator heating failure 764.69 POST test failed 774.70 Power unit input voltage fault 774.71 Power unit output voltage fault 784.72 R-bus error 794.73 ROM disk corrupted during SW update 804.74 SFN synchronization failure 804.75 SFN synchronization failure 814.76 SFN synchronization failure 814.77 Smoke alarm 824.78 SW does not support commissioning file 824.79 System frame clock signal missing 834.80 T-bus error 834.81 Telecom cell enabling or disabling failed 844.82 Telecom configuration failure 854.83 Timeout, commissioned resource not ready 854.84 Too many carriers allocated for LPA 864.85 Traffic flow in a non-existent ATM connection 874.86 Transmission clock missing 87



4.87 TX output power measurement fault 884.88 Unit autonomous reset as a recovery action 894.89 Unit blocked 894.90 Unit has lost connection to temperature sensor 904.91 Unit initialization failure 914.92 Unit initialization failure 924.93 Unit not supported by current BTS SW version 934.94 Unit SW download failed 944.95 Unit synchronization failed 954.96 Unit temperature is high 954.97 Unknown cabinet type 964.98 Unknown HW resource 964.99 [User defined] 974.100 WAF low noise amplifier faulty 984.101 WAM SFN polling timeout 984.102 WCI baseband reference clock failure 994.103 WEA power regulator fault 1004.104 WIB unit AC line break fault 1014.105 WIB unit battery failure 1014.106 WIB unit battery temperature out of range 1024.107 WIB unit power back-up time alarm 1024.108 WMC oven oscillator fault 1034.109 WPA power level changed 1054.110 WSC oven oscillator fault 1054.111 WSC phase difference jammed to zero reading 1094.112 WSC switch unsuccessful 1114.113 WSC/WMC transmission clock missing 1114.114 WSMA ST-bus error 1124.115 WSMA T-bus error 1134.116 WSMB does not receive frame clock 1144.117 WSMB RR-bus error 1154.118 WSMB SR-bus error 1154.119 WSMB ST-bus error 1164.120 WSMB T-bus error 1174.121 WSP PCI-bus failure 1184.122 WSP unit internal failure 1194.123 WTR internal clock faulty 1194.124 WTR internal clock faulty 1204.125 WTR local oscillator not locked 1204.126 WTR loop synthesizer not locked 1214.127 WTR output power decreased 1224.128 WTR output power fault 1224.129 WTR power supply voltage fault 1234.130 WTR RT-bus fault 1234.131 WTR synthesizer is not locked 1244.132 WTR temperature is high 125



Contents



1 About this document

The purpose of this document is to describe the alarms and alarm handling of theNokia UltraSite WCDMA Base Station (BTS) family, the Nokia MetroSiteWCDMA Base Station and the Nokia MetroSite 50 WCDMA Base Station. BTSsoftware (SW) uses these alarms as a basis for internal diagnosis and faultreporting through the Radio Network Controller (RNC) to the Operations SupportSystem (OSS) and BTS Site Manager.



About this document



2 Alarm handling

2.1 General

Base Station (BTS) alarm handling is based on unit state information. It preventsthe sending of unnecessary alarms by checking and updating unit states. Faultmessages come either from hardware devices or software components. The faultsare system or hardware specific. The Fault Diagnosis System creates uppernetwork alarms, which are based on an analysis of the faults, and sends them tothe BTS Site Manager and RNC.

In addition to routing to the RNC, the alarms are buffered and, for example,active BTS alarms can be seen from the RNC. NetAct is used for handling theBTS alarms.

The BTS is able to maintain alarm handling after it has been commissioned and isin a configured state. During the start-up, the BTS waits for the real time clockfrom the Network Time Protocol (NTP) server, and the fault diagnosis starts afterthe time has been set or a time-out has been detected. If the BTS is unable to setthe time using the NTP server, the default time (1.1.1990) will be used.

2.2 Instructions for solving problems

When starting to solve a problem, first refer to the instructions given in theindividual alarm descriptions.

Verify the configuration of a BTS by checking the commissioning, cabling andcorrect installation of the units at the BTS. Make sure the environment does notcause the fault. For more information on implementation, normal dailyoperations, maintenance, and troubleshooting, refer to Nokia UltraSite WCDMABase Station (BTS) family, Nokia MetroSite WCDMA Base Station and NokiaMetroSite 50 WCDMA Base Station Product Documentation sets.



Alarm handling

If an active alarm is a 'Start' alarm, a unit block/unblock (if supported by the unit)or site reset is required to cancel it. If the site reset or unit block/unblock does nothelp, replace the faulty unit. See the fields 'Source of the alarm' and 'Instructions'in the corresponding alarm description.

If you cannot solve the problem by yourself, contact the local Help Desk.

2.3 Blocking and locking

The 'Cancel' alarms are always sent to hosts (BTS Site Manager and RNC). Whenthe unit or cell is in a blocked state, the 'Start' alarms are only sent to the BTS SiteManager.

When a unit or cell is unblocked, all the active alarms related to the unblockedunit or cell are automatically sent to the hosts. The locked or unlocked state of acell has no effect on sending alarms to the hosts.

2.4 Identifying faulty units

This section describes how the plug-in units are identified in different WCDMABTS cabinets and how a faulty unit can be located with the NetAct system.

See below the explanations of an example 'Alarm Dialog' window for differentfields in Figure NetAct Alarms window.

. 7652 *: reported severity

. Suppl info field: fault name

. Diag info field:

(01) number of the rack where the plug-in unit is located(HEX)

(02) number of the shelf where the plug-in unit is located(HEX)

(0A) number of the slot where the plug-in unit is located(HEX)

(0010) not applicable

(WFAA 04) faulty unit and ID



Unit location numbers are used in alarm information to locate a failed unit. Themain principle for numbering locations is from top to bottom and from the left tothe right. Location numbers are defined with the following parameters:

RACK Specifies the rack of the cabinet and separates BB and RFcompartments from each other

SHELF Specifies the shelf in the cabinet

SLOT Specifies the location on the shelf

The figures below indicate how the rack, shelf and slot are defined in differentWCDMA BTS cabinets.



Alarm handling

Figure 1. Supreme cabinet



Figure 2. Optima cabinet



Alarm handling

Figure 3. Optima Compact Outdoor (WREB) cabinet



Figure 4. Optima Compact IBBU cabinet



Alarm handling

Figure 5. Optima Compact RF extension cabinet



Figure 6. Triple-mode cabinet



Alarm handling

Figure 7. MetroSite cabinet



Figure 8. MetroSite 50 cabinet

The figures below indicate how the fans are defined in different WCDMA BTScabinets.

Note fan control naming: 'FAN UNIT' refers to a group of fans including the fancontrol unit. A 'fan' is a single blower.



Alarm handling

Figure 9. Fan mapping in Supreme cabinet

Figure 10. Fan mapping in Optima Compact Outdoor (WREB) cabinet

WTR

WPA

53 55 57

54 56 58

153 154

HEX FAN

155

MFUAMFUA MFUA

59

WFD

WEAC



Figure 11. Fan mapping in Optima Compact IBBU cabinet

Figure 12. Fan mapping in Optima Compact RF extension cabinet



Alarm handling

Figure 13. Fan mapping in Triple-mode cabinet



Figure 14. Fan mapping in MetroSite cabinet



Alarm handling

Figure 15. Fan mapping in MetroSite 50 cabinet



3 Nokia UltraSite and MetroSite WCDMABTS alarm table

The table below describes the fields in the alarm table:

Table 1. Description of the fields in the alarm table

Name: The name of the fault.

Product: The name of the product in question.

Detecting unit: The unit that detects the fault.

Fault source: The equipment suspected to be faulty (sub-unit in parentheses).

Note that sometimes the actual source of the alarm is different than the one thatdetects the fault.

Meaning: A description of the fault situation.

Event type: The options are:

Event (Transient or Distur). Event type alarms can be seen in the RNC in 'Alarm History'. Notification type alarm. 'Event' alarm is not cancelled, because it is never active. No recovery actions. Event type alarm is shown in the BTS Site Manager as 'Transient' and in RNC as

'Distur'

Start. Alarm, a fault situation. The alarm is not automatically cleared (without manual operation and maintenance

work), even though the problem has been solved, but requires at least blocking/unblocking the unit or site reset.

. Recovery actions depend on the reported severity

Start/Cancel. Faults can be in a start or cancel state. The alarm is automatically cleared when the problem has been solved

Unit status: The options are:

Out of order The unit does not work



Nokia UltraSite and MetroSite WCDMA BTS alarm table

Table 1. Description of the fields in the alarm table (cont.)

Degraded The main functions of the unit work, but not all

Working All functions are working, but some trouble has beennotified

Info Status change information

Effect: A description of how this fault affects the operations of this unit, and how it affects theoperations of other units. The following questions are considered:

Does the status of the unit or its sub-units have any effect on the interpretation of thefault?

Does the fault have an effect on other active faults?

Reported alarms: 7650 BASE STATION FAULTY. Start, disables all cells. Cancel, causes a site reset. No new 7651, 7653 or 7654 alarms are reported when 7650 is active

7651 BASE STATION OPERATION DEGRADED. There is no limit to how many 7651 alarms can be active at the same time

7652 BASE STATION NOTIFICATION. There is no limit to how many 7652 alarms can be active at the same time

7653 CELL FAULTY. Start, the affected cell state is set disabled. Cancel, the affected cell state is set enabled

7654 CELL OPERATION DEGRADED. There is no limit to how many 7654 alarms can be active at the same time

7655 CELL NOTIFICATION. There is no limit to how many 7655 alarms can be active at the same time

LED display: The colour of the LED representing the fault level of the unit. The options are:

Stable red Major alarm

Blinking red Minor alarm

Stable yellow Unit in standby state or unit blocking

Blinking yellow Unit in self-heating state or software downloading

Stable green Unit on and working

Alternating red and greenMHA faulty

Instructions: Describes the actions required to clear the alarm.



4 Alarms

4.1 Active clock tuning fault

Name Active clock tuning fault

Product Supreme; Optima; MetroSite; Triplemode

Detecting unit WAM

Fault source Active WSC, WMC

Meaning Phase measurement cannot be performedin the active WSC or WMC.

Event type Start / Cancel

Unit status Degraded

Effect If there is only one WSC or both theactive and redundant WSCs are faulty,the synchronisation does not work andthe BTS is not operational. If there is aredundant WSC and the recovery switchoperation was successful, the BTS canwork normally. If the unit is WMC and it isfaulty, the synchronisation does not workand the BTS is not operational.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (if no working WSC orWMC)

7652 BASE STATION NOTIFICATION (ifworking redundant WSC available)

LED display Stable red

Instructions 1. 1. Fast tuning (refer to BTS Manager/Fast Tuning).

2. Block/unblock the alarming unit.

3. Replace the alarming clock unit.



Alarms

Note that because of a fault situation inthe active clock, the redundant clock isnot tuned. To make sure that the tuningis correct, run "Fast Tune BTS Clock"with the BTS Site Manager afterswitchover when the new WSC is takeninto use.

If there is a WMC or only one WSC, thetuning will continue but cells will remaindisabled.

4.2 Antenna# connection fault

Name Antenna# connection fault

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode; MetroSite 50

Detecting unit WAF

Fault source WAF

Meaning The Bias-T has detected that the reflectedTX power from the antenna hasincreased. The antenna cable betweenthe WAF and MHA is faulty or theantenna is faulty. The BIAS-T may befaulty.

Event type Start

Unit status Out of order

Effect The cell is out of use.

Reported alarms 7653 CELL FAULTY (all TX/RX-BTUs inthe cell are faulty)

7654 CELL OPERATION DEGRADED(there is a working /degraded BTU in thecell)

LED display N/A

Instructions 1. Check the Bias-T and MHAcommissioning.

2. Block/unblock the WAF unit (check ifalarm reappears after 5 minutes).

3. Check the antenna line (refer to thedocument WCDMA BTSTroubleshooting Instructions).

4. Check the PITA Cable connection(RJ45).



a. Check the voltage (refer toconnector pins in the documentWCDMA BTS TroubleshootingInstructions).

b. Check the right connection (refer tothe User Manual).

c. Check by cross-connecting RJ45cables between other sectors.

4.3 ATM, A2EA configuration error

Name ATM, A2EA configuration error


Detecting unit WAM

Fault source WAM

Meaning The RNC A2EA transport layer addressdoes not comply with the given BTSA2EA address.

This alarm is reported to BTS SiteManager only.

Event type Start

Unit status Working

Effect If AAL2 multiplexing is not in use, BTSoperation is not affected. If the error is inthe AXC (if AAL2 multiplexing is in use),the BTS may reject AAL2 connectionestablishment requests.

Reported alarms 7652 BASE STATION NOTIFICATION

LED display Stable green

Instructions Check and re-commission the AXC (ifAAL2 multiplexing is in use), RNC or BTSwith the correct BTS A2EA addresses.

4.4 ATM cell loss

Name ATM cell loss

Product



Alarms

Supreme; Optima; Optima IBBU; OtimaCompact RF Extension; MetroSite;Triplemode; MetroSite 50

Detecting unit WAM

Fault source WAM

Meaning ATM cells are lost. The cell loss can becaused by a traffic overload, by the WAMreceiving an invalid ATM cell or AAL5packet, or by the data corruption on Iub(that is, bad BER).

The most common causes for this alarmare transmission network problems(causing unnecessary WAM changes).


Unit status Working

Effect This can result in data loss and resendingof data.


LED display Blinking red

Instructions 1. Check that Bandwidths (that is, cells/s)are the same at BTS, AXC and RNC.

2. Check the data integrity from theincoming Iub (refer to the documentWCDMA BTS TroubleshootingInstructions).

3. Check the other transmissionelements´ active alarms (refer to AXCAlarm Manual).

4. Check the WAM, AXU and the cablingbetween them.

4.5 ATM faulty

Name ATM faulty


Detecting unit WAM

Fault source WAM

Meaning A WAM internal failure.

Event type Start




Effect The BTS capacity decreases. If the faultyunit is the master WAM, the BTS is faulty.

Reported alarms 7650 BASE STATION FAULTY (masterWAM)

7651 BASE STATION OPERATIONDEGRADED (slave WAM)


Instructions 1. If ping to BTS is working, restart theBTS remotely.

2. If ping to BTS is not working but ping toAXC is working, then restart AXCremotely so that the BTS is alsorestarted automatically.

3. Ping the AXC. If not working, visit thesite and restart the BTS. If this does nothelp, replace the alarming WAM unit.

4.6 ATM processor faulty

Name ATM processor faulty


Detecting unit WAM

Fault source WAM, WSPC, WSPD, WSPE

Meaning There is a fault in the WAM processorSFN interrupt or the SFN is not beingupdated in the WSPC/WSPD/WSPEMCU.

There is a fault in the WAM internal busor between the WAM and WSP.

There is a MCU failure in the WAM or theATM loop test at startup has failed.

Event type Start


Effect The BTS capacity is decreased.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED


Instructions 1. If ping to BTS is working, restart theBTS remotely.



Alarms

2. If ping to BTS is not working but ping toAXC is working, then restart AXCremotely so that the BTS is alsorestarted automatically.

3. Ping the AXC. If not working, visit thesite and restart the BTS. If this does nothelp, replace the alarming WAM unit.

4.7 ATM traffic overload

Name ATM traffic overload


Detecting unit WAM

Fault source WAM, WSPC

Meaning A buffer overflow caused by trafficoverload. The maximum capacity isexceeded and some data discarded.



Effect This alarm has variable consequences.Calls may be cut off and, in worst cases,cells may be disabled.



Instructions 1. Check that Bandwidths (that is, cells/s)are the same at BTS, AXC and RNC.

2. Check the data integrity from theincoming Iub (refer to the documentWCDMA BTS TroubleshootingInstructions).

3. Check the other transmissionelements´ active alarms (refer to AXCAlarm Manual).

4.8 BS SW download or activation failed

Name BS SW download or activation failed




Detecting unit WAM

Fault source WAM, WTR, WPA/WMP

Meaning The SW update to the BTS has failed.The error can be caused by a unit resetduring the SW update, a hardwareproblem in the unit or cabinet, or acorrupted flash file system.



Effect The SW update to this BTS may not bepossible without special actions. The BTScontinues its operation with the oldsoftware.



Instructions 1. Retry the SW update.

2. If the "ROM disk corrupted during SWupdate" or other flash memory-relatedalarm is active for the faulty unit at thesame time, replace the faulty unit.

4.9 BTS Blocked

Name BTS Blocked

Product Supreme; Optima;Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode; MetroSite 50

Detecting unit WAM

Fault source Master WAM

Meaning The BTS is blocked with the BTS SiteManager. The meaning of the fault is toavoid alarms that may rise during a BTSmaintenance task.

Event type Start

Unit status Working

Effect The BTS does not send alarms to theRNC when the BTS is blocked. Alarmcancels are sent to the RNC.



Alarms

All cells are disabled.

Reported alarms 7650 BASE STATION FAULTY


Instructions To cancel the alarm, unblock the BTS.Unblocking the BTS causes a site reset.

4.10 BTS config error (all units in a cell must be of samefreq)

Name BTS config error (all units in a cell mustbe of same freq)

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode

Detecting unit WAM

Fault source CELL

Meaning A unit with an incompatible frequencytype has been detected. All units in thecell must be of the same frequency type.



Effect The capacity drops. Cell(s) may remaindown.

Reported alarms 7653 CELL FAULTY

LED display N/A

Instructions Check the unit frequency types in the celland replace the incompatible unit with acompatible one.

4.11 BTS config error (different WTR variants cannotcoexist in cell)

Name BTS config error (different WTR variantscannot coexist in cell)

Product



Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode

Detecting unit WAM

Fault source RX - WTR

Meaning There are different WTR variants in thesame cell.



Effect The conflicting WTR unit is marked asfaulty (not used by the Telecom), and thecell coverage may therefore decrease.For example, if the conflicting WTRA isconfigured as the transmitter for the cell,the cell may also be shut down.

Reported alarms 7654 CELL OPERATION DEGRADED


Instructions Replace the conflicting WTR unit with acompatible unit.

4.12 BTS config error (incorrect carrier candidates)

Name BTS config error (incorrect carriercandidates)


Detecting unit WAM

Fault source LCR

Meaning Carrier candidates are commissioned foreach cell (not WTR/LTX specific).

Event type Start


Effect The BTS cannot configure the TRX to achannel that is not physically supportedby the WTR. The WTR or TRX isinoperational.


LED display N/A

Instructions



Alarms

Recommission (Reconfigurationcommissioning) the BTS with the correctcarrier candidate values.

4.13 BTS config error (Not enough HW for LCR)

Name BTS config error (Not enough HW forLCR)


Detecting unit WAM

Fault source LCR

Meaning A dual carrier WTR has been replacedwith a single carrier WTR, and it cannotserve both cells commissioned to theWTR.

Event type Start/Cancel


Effect The BTS capacity drops.


LED display N/A

Instructions Replace the single carrier WTR with adual carrier WTR.

4.14 BTS config error (WAF overload, 50W not in dualWPA config)

Name BTS config error (WAF overload, 50W notin dual WPA config)

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension

Detecting unit WAM

Fault source WPA

Meaning Two 50 W WPAs are coupled to oneWAF, or one 50 W WPA and one 28 WWPA are coupled to one WAF. Only two28 W WPAs can be coupled together toone WAF unit.





Effect The TX power is not turned on in the TXchain. The BTS capacity drops. Cell(s)may remain down.



Instructions Replace the 50 W WPAs with the 28 WWPAs.

4.15 BTS config error (WPA / WSMA version conflict incell)

Name BTS config error (WPA / WSMA versionconflict in cell)


Detecting unit WAM

Fault source WPA

Meaning A WPAI/WPAJ with two carriers and aWOC were detected in the combinationwith a WSMA.



Effect The related cell is disabled.



Instructions Replace the WSMA with a WSMB. Orreplace the WPAI and WPAJ with aWPAA/WPAB.



Alarms

4.16 BTS config error (WSMA and WSMB cannotcoexist)

Name BTS config error (WSMA and WSMBcannot coexist)


Detecting unit WAM

Fault source WSMA

Meaning WSMA and WSMB units are detected inthe same cabinet. They cannot coexist inthe BTS.



Effect The BTS is out of order.



Instructions Replace the conflicting unit WSMA withthe WSMB, or vice versa.

4.17 BTS config error (WTR used as dual TRX behindWSMA)

Name BTS config error (WTR used as dual TRXbehind WSMA)


Detecting unit WAM

Fault source WTRB, WTRD

Meaning A WTR/WSM conflict is detected. Theincompatible WTR cannot operate withthe WSMA when two TRXs are used.

Event type Start


Effect The cell capacity drops or the cell isdisabled.



The WTR capacity in the subrack remainsunused.

The incompatible WTR unit remainsunconfigured.



Instructions Replace the incompatible unit orrecommission the BTS (ReconfigurationCommissioning) with only one TRX on.

4.18 BTS file error

Name BTS file error


Detecting unit WAM

Fault source WAM

Meaning The BTS unit properties data is invalid ormissing.

Event type Start


Effect The BTS does not operate.

Reported alarms 7650 BASE STATION FAULTY (masterWAM)

7651 BASE STATION OPERATIONDEGRADED (slave WAM)

7653 CELL FAULTY (WTR or WPA withno redundant unit in a cell)

7654 CELL OPERATION DEGRADED(WTR or WPA with a redundant unit in acell)


Instructions 1. Download the SW again.

2. If the fault still exists after 10 minutes,replace the alarming unit.



Alarms

4.19 BTS RNC interface signalling link failureName BTS RNC interface signalling link failure


Detecting unit WAM

Fault source WAM, (RNC)

Meaning A common or a dedicated Node-BApplication Protocol (NBAP) or an AAL2signalling link failure. It can be causedeither by a broken WAM, the RNC, or atransmission network problem. The mostcommon reason for this alarm isfrequently-breaking transmission.



Effect The telecom SW does not operate (on theTelecom Master WAM) and therefore theWAM is not operational. The RNC NBAPstarts link re-establishment proceduresand keeps on trying until it eithersucceeds or the link is removed.Signalling and calls through the relatedcell(s) do not work.

The user data cannot be used in therelated cell(s), but the WAM can still workas a Telecom Master WAM.



Instructions 1. Check the other transmission elements'active alarms (refer to the AXC AlarmManual).

2. Check the BTS and RNC transmissionsettings.

3. Reset the AXC.

4. Change the WAM unit.

Note

BTS and AXC can be restarted remotely.



4.20 Cabinet door openName Cabinet door open

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; MetroSite;MetroSite 50

Detecting unit WEA

Fault source WEA

Meaning The cabinet door is open or the cabinetdoor sensor is faulty.


Unit status Working

Effect No direct effect on the BTS operation.Note that the WHX fan does not stopeven when the door is open.

Reported alarms 7651 BASE STATION DEGRADED(MetroSite, MetroSite 50)

7652 BASE STATION NOTIFICATION(other products)

LED display N/A

Instructions 1. Ensure that the cabinet door(s) areproperly closed.

2. Check that the door switches functioncorrectly and that they have beenadjusted correctly.

4.21 Cell blocked

Name Cell blocked


Detecting unit WAM

Fault source WTR

Meaning The user has blocked the cell with theBTS Site Manager.


Unit status Working

Effect



Alarms

The BTS does not send to the RNC anyalarms related to the blocked cell or theunits commissioned to the blocked cell.Alarm sending to the BTS Site Manageris always enabled. Alarm cancels arealways sent to the RNC.

Calls through the blocked cell aretransferred to another cell. It is notpossible to establish new calls throughthe blocked cell.



Instructions To cancel the alarm, unblock the cell.

4.22 Cell block rejected by RNC

Name Cell block rejected by RNC


Detecting unit WAM

Fault source LCR

Meaning The cell has been disabled due to BTSinternal reasons, for example if the RNChas rejected the normal cell blockingduring the Intelligent Shutdown.


Unit status Working

Effect The cell is disabled.


LED display N/A

Instructions 1. Check the other active alarms.

2. Check the mains power supply.

4.23 Cell calibration failure

Name Cell calibration failure

Product



Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode; MetroSite 50

Detecting unit WAM

Fault source WTR

Meaning TX power calibration failure: a CPICHsetup failure, a CPICH release failure or ageneral initial calibration failure.

Event type Start


Effect If the initial calibration fails, the cell isfaulty.



Instructions 1. Check the commissioning (LCRcablings).

2. Block/unblock the alarming unit or theWPA connected to the alarming WTR.

The unit needs to be blocked/unblocked to get initialized/configuredagain if there was an internal failure.

3. Start a looptest with BTS Manager tocheck WSM cablings.

4. Check the RF and WSM cablings.

5. Replace the alarming unit.

4.24 Cell power monitoring

Name Cell power monitoring


Detecting unit WAM

Fault source WPA

Meaning The WPA/Radio output power hasdropped. There is a fault in the downlinktransmission path.

Event type Start





Alarms



Instructions 1. Block/unblock the WPA. The unit needsto be blocked/unblocked to get itinitialised/configured again if there wasan internal failure.

2. Block/unblock the WTR belonging tothe same LCR.

3. Check the RF TX cabling.

4. The fault may be in the WTR or WPA(refer to the document WCDMA BTSTroubleshooting Instructions).

4.25 Cell power parameter out of range

Name Cell power parameter out of range


Detecting unit WAM

Fault source LCR

Meaning The power values in the cell configurationdata sent by the RNC are out of range.



Effect In a cell set-up, the cell is set inactiveuntil valid cell configuration data has beenreceived. In a cell reconfiguration, the cellcontinues operating with the previousconfiguration data.

Reported alarms 7655 CELL NOTIFICATION

LED display N/A

Instructions Set the correct power values to the RNC.

4.26 Commissioning parameter mismatch

Name Commissioning parameter mismatch




Detecting unit WAM

Fault source WAM

Meaning A commissioning parameter does nothave a valid value (the parameter ismissing or it has a value outside thevalue range) or there are errors in thecommissioning file.

Event type Start


Effect The BTS capacity may decrease or theremay be interference in calls.



Instructions Reconfigure the BTS with CommissioningWizard.

4.27 Communication failure inside WSP

Name Communication failure inside WSP


Detecting unit WSP

Fault source WSP

Meaning An internal communication failurebetween the DSP processors.



Effect The BTS capacity possibly decreases.The Digital Signal Processing (DSP) doesnot work correctly.

Reported alarms 7650 BASE STATION FAULTY (all WSPsare faulty)

7651 BASE STATION OPERATIONDEGARDED (at least one working WSP)



Alarms


Instructions 1. Block/unblock the alarming WSP.

2. The fault may be in the WTR or WPA(refer to the document WCDMA BTSTroubleshooting Instructions).

Also check for other alarms. If the “Unitautonomous reset as a recovery action”alarm has occurred for the alarmingWSP, replace the alarming WSP unit.

4.28 Step change of oven oscillator control over 10% ofcontrol range

Name Step change of oven oscillator controlover 10% of control range


Detecting unit WAM

Fault source WSC/WMC

Meaning The reference frequency that the BTSmaster clock receives from the transportpart has changed by about 0.2 ppm ormore (which equals the changemagnitude of 204 DAC steps or more)during the measurement period (about 20minutes), compared to the BTS masterclock frequency.

The cause of the alarm can be:

1. The Iub reference frequency haschanged due to a fault in thetransmission network synchronisation(which in turn is caused by anequipment fault or a setting error). Notethat if the network synchronisationmalfunction lasts a long time, the alarmis cancelled when the BTS frequencyreaches the faulty Iub synchronisation.The alarm can also be activated if thefaulty Iub synchronisation is correctedand there is again the difference of 0.2ppm or more. The alarm is cancelledwhenever the difference becomessmaller than 0.2 ppm.



2. The Iub reference frequency fluctuatescontinuously due to a great deal of jitter/wander in the transmission network.The alarm is continuously activated/cancelled (however, the alarming statemay predominate). There is alwayssome jitter/wander in the transmissionnetwork; the limits are defined in ITU-TG.823/824/825.

3. If the BTS integrated transport partreceives the synchronisationinformation via the 2.048 MHzsynchronisation input (external clocksource), the alarm situation may becaused by a fault of that signal. In thatcase, the alarm behaviour notificationslisted with the Iub signal (see above)are also valid in this case.

4. There is an equipment fault in the BTS.The equipment fault is, however, notthe most common reason. Normally thereason can be found in the Iub/reference signal behaviour (see thedescriptions above).

Note that if the alarm 7651 BASESTATION OPERATION DEGRADED:'WSC oven oscillator fault' becomesactive, it may cause the alarm 7652BASE STATION NOTIFICATION:'Difference between BTS master clockand reference frequency' to cancel.



Effect This fault does not immediately affect theoperations of the BTS, but it is anotification that the BTS frequencydeviates from the Iub reference. The BTSmaster clock tuning continues in spite ofthe alarm, but because the BTS masterclock adjustment is quite slow in order tofilter the instabilities of the Iub interface, ittakes some time (even several hours)before the BTS operations start to beaffected.


LED display Blinking red (WSC/WMC)

Instructions Because there are several possibilities forthe alarm activation, a BTS ClockFrequency History feature has beendeveloped. The stored history data canbe accessed via the BTS Site Manager.



Alarms

The history data can be used as a tool forfinding out the reason for the fault/alarmsituation (for further instructions about thehistory feature, see the online Help of theBTS Site Manager). Depending on thepossible reason, follow the instructionsbelow:

1. In case of fault in the transmissionnetwork synchronisation, the networksynchronisation must be corrected. Thelong-term accuracy of the Iub signalmust be 0.015 ppm or better (check thecorrect Iub accuracy by measuring it).No actions on the BTS are necessarilyneeded.

2. If the basic accuracy of the Iub signal isin order but there is too much instability,that is, the jitter/wander is outside theacceptable limits, the synchronisationof the transmission network must becorrected. The limits for the jitter/wander are defined in the ITU-T G.823/824/825. No actions on the BTS areneeded.

3. In case of BTS equipment fault, thelocation may be:

a. Transport part. First check the alarms of the

AXC node with the AXCManager and act accordingly.

. If there are no alarms, check theAXC synchronisation settings.

b. WSC unit. If both the Iub reference signal

accuracy and the AXC node arein order but the WSC unit is stillalarming, run the fast tuning withthe BTS Site Manager.

. If the alarm is still active after thefast tuning is finished, reset thesite.

. If that does not help, replace theWSC unit.

Note that if the reason is in thetransmission networksynchronisation, replacing theWSC unit does not correct thesituation. Furthermore, thealarm activity (frequent alarms/cancels) points to instability inthe transmission network, not toa fault in the unit.



4. After the fault situation has beencleared, the BTS master clock may alsorequire tuning because the BTS masterclock adjustment is quite slow. Thetuning may be done:. manually by changing the DAC

word (during a site visit). or with fast tuning, in which the BTS

master clock is tuned in a fewminutes automatically near the Iubreference (normal tuning takes careof the fine tuning). Note, however,that the fast tuning should only beused in case the Iub referencesignal is known as a good one.Otherwise the BTS frequency maybe tuned into a totally incorrectvalue, causing serious problems inthe network performance.

Background information:

The principle is that in the mobilenetwork, the synchronisation goes fromMSC => RNC => BTS. But in reality thatchain might be broken somewhere and,for example, when using leased lines, theBTS may take the referencesynchronisation from the transmissionnetwork of another operator. This doesnot harm the system if thesynchronisation of the leased line serviceprovider is also accurate/stabile enough.The BTS uses the incomingsynchronisation signal as a reference forthe Air interface, the accuracyrequirement of which is set by 3GPP.

4.29 Diversity branch masthead amplifier fault

Name Diversity branch masthead amplifier fault


Detecting unit WAF

Fault source (WAF), MHA

Meaning The operating voltage of the Mast HeadAmplifier (MHA) is supplied through theBias-T from the WAF. The WAF monitorsthe consumption of the current and



Alarms

generates an alarm if it deviates from thenormal consumption. The cable betweenthe MHA and WAF is faulty, the Bias-T isfaulty, the MHA is faulty or the MHA doesnot exist.

Event type Start


Effect If the MHA is faulty, the RX performanceis degraded. The size of the cell may bereduced.


LED display Alternating red and green

Instructions 1. Check the MHA commissioningparameters.

2. Block/unblock the WAF in belongingLCR.

3. Check the RF cabling and Bias-T.

4. The fault can be in WAF, Bias-T orMHA. Refer to the document WCDMABTS Troubleshooting Instructions.

4.30 DSC-bus failure

Name DSC-bus failure


Detecting unit WAM

Fault source WAM, WSP

Meaning There is a failure in the bus between theWAM and WSP (DSC bus), which meansthat messages do not get through via thatDSC bus.

Event type Start

Unit status Out of order; Degraded

Effect If the source of the fault is at the WSPend of the bus, the DSP capacitydecreases. If the source of the fault is atthe WAM end of the bus, it is possiblethat calls will not get through at all.




LED display Blinking red (WAM), Stable red (WSP)

Instructions 1. Block/unblock the alarming unit.


4.31 DSP failure in radiolink creation

Name DSP failure in radiolink creation


Detecting unit WAM

Fault source WSP

Meaning Radiolink creation has failed repeatedlydue to DSP rejection or no response fromthe DSP CPU.

Event type Start


Effect The BTS capacity may decrease.





4.32 Error in commissioning data

Name Error in commissioning data


Detecting unit WAM

Fault source WTR

Meaning The WTR initialisation parameters arefaulty. The error can be caused by amissing parameter in the commissioningfile: the cabling information (main,diversity), feeder loss, local cellresources, for example.



Alarms

Event type Start

Unit status Working

Effect The WTR is initialised with the defaultvalues.

The BTS capacity may decrease or theremay be interference in calls.



Instructions 1. Check that the cell parameters, RXcabling, feeder loss and MHA gain arecorrect in the commissioning file.

2. Update the information if needed.Reconfiguration commissioning isrequired for correcting the values.

4.33 Error in file server during SW download

Name Error in file server during SW download


Detecting unit WAM

Fault source WAM

Meaning The BTS is unable to obtain a file fromthe file server (error in FTP open or FTPget). The file server is down, the file ismissing, or the path is incorrect. Apossible error in the DCN and Iub, or auser administration error (invalidusername or password, or the user doesnot have access rights for the files).



Effect The BTS continues its operation with theold software.



Instructions 1. Try to repeat the SW download a fewtimes.

2. Check the FTP account user settings.



3. Check the file and path names.

4. Check the administration log on the fileserver.

4.34 Failure in AXU initialization

Name Failure in AXU initialization


Detecting unit WAM

Fault source WAM

Meaning The BTS has lost connection to the AXUor the AXU SW is incompatible. The AXUdoes not respond to requests from theBTS.



Effect The RNC connection and the remote BTSSite Manager connection will not work.The CNBAP will stay down. The BTS isnot operational.



Instructions 1. Check the AXC configuration.

2. Reset AXC unit remotely. This will alsocause a BTS restart.

4.35 Cooling fan speed has reduced from the set speed

Name Cooling fan speed has reduced from theset speed


Detecting unit UltraSite, MetroSite, MetroSite 50, Triple-mode: WAM

Fault source Supreme: WFA, WPA and WHX fans



Alarms

Optima family: WFA, WPA and WHX fans

Triple-mode: WFA, WMP/WTR and WHXfans

MetroSite, MetroSite 50: WFA fans

Meaning A fan does not rotate or rotates slowerthan at the requested speed, or the RPMinfo is not available for the fan.



Effect If the redundant fans cannot cool thecabinet sufficiently, a unit overheatingmay occur. For example, a temperaturealarm from the WPA/WMP or WTR maybe generated.



Instructions 1. Check the fan ID from the alarm textand locate the problematic fan. See theFan mapping figures.

2. Check the fan and cabling.

3. If that does not help, replace the WFA,WFD or MFU module or the fancontrolled by the WFA, WFD or MFU.

Fan control: 'FAN UNIT' refers to agroup of fans including the fan controlunit. A 'fan' is a single blower.

4.36 Fatal alarm

Name Fatal alarm


Detecting unit WAM

Fault source WOU

Meaning ARIO has detected a Fatal level alarm.Some ARIO alarms can be cancelledwithout reset, but most ARIO alarmsrequire a WOU block/unblock to cancel.



Effect The related cell is faulty.





Instructions Check the WOU or WRUs. Use the ARIOLocal Management Tool and NokiaAdvanced Indoor Radio userdocumentation to diagnose the errorcause.

4.37 Fault between WAM and WSP SFN (WSP)

Name Fault between WAM and WSP SFN(WSP)


Detecting unit WSP

Fault source WSP, (WAM)

Meaning Synchronisation between the WAM andWSP is lost.

Event type Start


Effect The BTS capacity possibly decreases.The Digital Signal Processing (DSP) doesnot work correctly.

Reported alarms 7650 BASE STATION FAULTY (all WSPsare faulty)

7651 BASE STATION OPERATIONDEGARDED (at least one working WSP)


Instructions 1. If only one WSP in the cabinetgenerates this alarm, the WSP is faulty.

2. If all WSPs in a subrack generate thisalarm, the WAM is faulty.

3. If all WSPs generate this alarm, theWSC/WMC is faulty.

Otherwise, check for other alarms. Ifthe "Unit autonomous reset as arecovery action" alarm has occurred forthe alarming WSP, replace the alarmingWSP unit.



Alarms

4.38 Fault in ATM interfaceName Fault in ATM interface


Detecting unit WAM

Fault source WAM

Meaning WAM ATM interface, AXC or CIF busfailure. The AXC may have been reset.

A WAM processor failure.

Event type Start


Effect Communication to other WAMs is notfunctioning.

The BTS capacity decreases. The BTS isfaulty if the BTS configuration has onlyone WAM or all WSPs are under thefaulty WAM.

Reported alarms 7650 BASE STATION FAULTY (withoutslave WAM recovery)

7651 BASE STATION OPERATIONDEGRADED (several WAMs with WSPs)


Instructions 1. Block/unblock the faulty unit (this willreset the BTS).

2. Swap the WAM units between subracksand check if the alarm follows the unit.Replace the faulty WAM unit.

3. Check the AXU.

4. Check the backplane connectionbetween the WAM and AXU.

4.39 Fault in OM and DSP SW interface

Name Fault in OM and DSP SW interface


Detecting unit WAM

Fault source WSPA, WSPC



Meaning A communication failure between theWAM and DSP.

Event type Start


Effect The Digital Signal Processing (DSP) doesnot work correctly. The BTS capacitypossibly decreases.





4.40 File corrupted in SW download

Name File corrupted in SW download


Detecting unit WAM

Fault source WAM

Meaning The SW being downloaded is corruptedor incorrectly formed.


Unit status Working

Effect The BTS continues its operation with theold software.



Instructions 1. Retry the SW update.

2. Fetch BTS log files and check thedownload status from the BTS SWDLreport.

4.41 Flash operation failure

Name Flash operation failure



Alarms


Detecting unit WAM, WTR, WPA/WMP, WSPC

Fault source WAM, WTR, WPA/WMP, WSPC

Meaning The flash memory operation failure. If thisalarm appears continuously, the flash chipmay be broken.

Event type Start


Effect BTS memory operations are not stable,for example the software download andparameter updates.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (if unit is WAM, WSPC)

7654 CELL OPERATION DEGRADED (ifunit is WPA/WMP or WTR)


Instructions 1. Check the other active alarms. If theROM disk is corrupted, change thealarming unit.

2. Block/unblock the faulty unit.

There are no recovery actions and dueto that the block/unblock can be triedonce. If that does not help, replace thefaulty unit.

4.42 Gain adjust alarm

Name Gain adjust alarm


Detecting unit WAM

Fault source WTR

Meaning The WTR cannot adjust the TX outputpower.



Effect



The WTR gain fluctuations cannot beadjusted, which affects the cell outputpower accuracy. The operation of therelated cell is degraded and there may bedisturbances or cutoffs in calls.


LED display Blinking red (WTR)

Instructions 1. Block/unblock the WTR. The unit needsto be blocked/unblocked to get itinitialised/configured again if there wasan internal failure.

2. Check the WTR RF TX cabling.

3. If that does not help, replace thealarming unit.

4.43 Incompatible SW version detected

Name Incompatible SW version detected


Detecting unit WAM

Fault source WAM, WTR, WPA/WMP

Meaning A new unit with an incompatible SW hasprobably been inserted in the BTS.



Effect The resources provided by the unitcannot be used.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WAM (or undefined))

7653 CELL FAULTY (WPA/WMP or theonly WTR in the cell)

7654 CELL OPERATION DEGRADED(WTR)


Instructions Update the compatible SW to the BTS(check the SW versions to see the activeSW version, and update the active SWversion), unless it is automaticallyupdated by the NetAct.



Alarms

4.44 Wrong unit type

Name Wrong unit type

Product Supreme; Optima IBBU; Optima CompactRF Extension; MetroSite 50

Detecting unit WAM

Fault source WSMA, (WTRA, WSPA), WMCMMetroSite 50/WN3.0: WMCM12, WTRB

Meaning An unsupported unit (for example aWSMA, WTRA, WSPA, WMCM or WTRB)has been detected in the cabinet.

Event type Start


Effect The BTS is faulty or the capacity isdecreased.

Reported alarms 7650 BASE STATION FAULTY (WMC)

7651 BASE STATION OPERATIONDEGRADED (WSP, MetroSite 50)

7653 CELL FAULTY (WSM, WTR)


Instructions Replace the unsupported unit with a unitof the correct type.

4.45 Initial calibration not started because other cell notcleared

Name Initial calibration not started becauseother cell not cleared


Detecting unit WAM

Fault source WTR

Meaning



There is a shared WPA/WMP in theconfiguration (WPA serves two cells). Thefirst cell needs to be calibrated andtherefore the second active cell needs tobe cleared, but the clearing fails.



Effect The initial power level of the cell isinaccurate. Continuous calibration is notperformed. The cell size may differ fromthe planned coverage.



Instructions 1. Block/unblock the WPA/WMP unitbelonging to the same LCR as alarmingWTR. The unit needs to be blocked/unblocked to get it initialized/configuredagain if there was an internal failure.

2. Reset the site.

4.46 Invalid carrier in WTR

Name Invalid carrier in WTR


Detecting unit WAM

Fault source WTR

Meaning There was an attempt to set the WTR toa channel not supported by the WTR (ona different frequency band).



Effect The related cells are disabled.



Instructions 1. Make sure that correct carrier numbersare in use in the RNC.

2. Commission the BTS with the correctWCDMA carrier values for the WTR.



Alarms

4.47 Invalid frequency channel for the BTS HWName Invalid frequency channel for the BTS HW


Detecting unit WAM

Fault source WTR, WPA, WIC, WAF, WMP

Meaning The requested channel in the cell set-upis not acceptable, that is, the frequencyband and/or the carrier spacing and/or thenumber of carriers is/are not acceptablefor the BTS HW.

Event type Transient

Unit status Working

Effect The BTS capacity possibly decreases.



Instructions Check the RNC cell parameters againstthe BTS HW configuration. The cellfrequency is out of the minimum/maximum limit of the HW, or the numberof carriers for the HW type is exceeded,or the carrier spacing limit is exceeded.There are different type variations of theHW that may have limitations in thesupported frequency range andbandwidth.

4.48 LPA faulty

Name LPA faulty


Detecting unit WPA/WMP

Fault source WPA/WMP

Meaning The unit is broken, because the startupself-test fails, the FPGA file downloadingfrom flash fails, or the synthesiser ismalfunctioning. This fault can only occurin the self-test phase.

Event type Start




Effect The unit does not operate. The relatedcell becomes faulty.



Instructions 1. Block/unblock the WPA/WMP.

2. Replace the alarming WPA/WMP.

4.49 LPA gain fault

Name LPA gain fault




Meaning A malfunction in some part of theamplifier, which therefore cannot performthe specified gain.



Effect The BTS capacity possibly decreases.




2. Replace the alarming WPA/WMP.

4.50 LPA input signal level is too high

Name LPA input signal level is too high


Detecting unit WPA/WMP, WOU

Fault source WPA/WMP, (WTR), WOU

Meaning



Alarms

The input signal level from the WTR iscritically high. The LPA gain is too low.

Event type Start


Effect There is no RF output from the WPA/WMP, WOU. The related cell becomesfaulty.



Instructions 1. Block/unblock the WTR and WPA/WMPor WOU.

2. Check PTx Target value with NEMUand HSDPA power parameters (refer tothe Technical NoteTN_3GBTS_SW_2006_0035).

3. Replace the faulty unit.

4.51 LPA linearization fault

Name LPA linearization fault




Meaning The quality of the output signal is poor, orthe synthesizers are not locked.

Event type Start


Effect There is no RF output from the WPA/WMP. The related cell becomes faulty.




2. Check RF TX cabling (refer to thedocument WCDMA BTSTroubleshooting Instructions).




4.52 LPA power supply alarmName LPA power supply alarm



Fault source WPA/WMP, WOU

Meaning The internal power supply of the unit ismalfunctioning.

Event type Start


Effect There is no RF signal at the WPA/WMPor WOU output. The related cell becomesfaulty.



Instructions 1. Block/unblock the WPA/WMP, WOU.

2. Check the power supply and WPAcablings and connectors from thebackplane (refer to the documentWCDMA BTS TroubleshootingInstructions.


4.53 LPA reflected power too high

Name LPA reflected power too high



Fault source WPA/WMP, WAF, (cable)

Meaning A serious increase in the outputimpedance. A cable may be broken or acable connection may be faulty.

Event type Start


Effect There is no RF output from the WPA/WMP. The related cells are disabled.



Alarms



Instructions 1. Block/unblock the WPA.

2. Check the RF cabling between theWPA and WAF.

3. Check the WOC (in the redundantconfiguration) installation inaccordance with the installationinstructions (that is, check that cablelengths and codes are right betweenWTR, WIC and WPA).

4. Check the WAF, the antenna cablingand cables.

5. Replace the WPA.

4.54 LPA temperature is dangerously high

Name LPA temperature is dangerously high



Fault source WPA/WMP, WOU

Meaning The temperature of the unit is critical. Ithas reached its maximum acceptablelevel.

It is also possible that the temperaturesensor is broken.

Event type Start


Effect There is no output from the WPA/WMP orWOU. The related cell becomes faulty.



Instructions 1. Check the other active alarms related totemperature or cooling fan.

2. Block/unblock WPA if no other alarmingunit is present.

If block/unblock does not help, replacethe alarming unit.



4.55 Main branch masthead amplifier faultName Main branch masthead amplifier fault


Detecting unit WAF

Fault source (WAF), MHA

Meaning The operating voltage of the MHA issupplied through the Bias-T from theWAF. The WAF monitors the consumptionof the current and generates an alarm if itdeviates from the normal consumption.The cable between the MHA and WAF isfaulty, the Bias-T is faulty, the MHA isfaulty, or the MHA does not exist.

Event type Start


Effect If the MHA is faulty, the RX performanceis degraded. The size of the cell may bereduced.


LED display Alternating red and green (WAF)

Instructions 1. Check the MHA commissioningparameters.

2. Block/unblock the WAF in belongingLCR.

3. Check the RF cabling and Bias-T.

4. The fault can be in WAF, Bias-T orMHA. Refer to the document WCDMABTS Troubleshooting Instructions.

4.56 Mains power break, running battery backup

Name Mains power break, running batterybackup


Detecting unit WAM.

Fault source O&M master WAM

Meaning



Alarms

There is a fault in the mains powersupply. The BTS has received a BatteryBackup alarm and the IntelligentShutdown procedure has been started.



Effect The battery backup unit is partly orcompletely in use. The intelligentshutdown operation is started. If themains power does not return, the cells areshut down according to the predefinedparameters.



Instructions Check the mains power supply.

4.57 Major alarm

Name Major alarm


Detecting unit WAM

Fault source WOU

Meaning ARIO has detected a Major level alarm.Some ARIO alarms can be cancelledwithout reset, but most ARIO alarmsrequire a WOU block/unblock to cancel.



Effect The functionality of the specific cell isdegraded.






4.58 Minor alarmName Minor alarm


Detecting unit WAM

Fault source WOU

Meaning ARIO has detected a Minor level alarm.Some ARIO alarms can be cancelledwithout reset, but most ARIO alarmsrequire a WOU block/unblock to cancel.



Effect The functionality of the specific cell isdegraded.




4.59 Missing NBAP cell parameters, defaults are used

Name Missing NBAP cell parameters, defaultsare used


Detecting unit WAM

Fault source WAM

Meaning An alarm is generated if even one cellparameter is missing from the RNCconfiguration data and BTScommissioning file.

Event type Start


Effect Default values are used for the cell. Thecell operation may become degraded.

Reported alarms



Alarms

7651 BASE STATION OPERATIONDEGRADED


Instructions 1. If the parameters are configured toNokia RNC, delete and recreate BTSObject in NEMU.

2. Reconfigure the BTS withCommissioning Wizard, if the defaultvalues for the cell parameters (such ascell radius, rampdown time/step) arenot appropriate.

4.60 No connection to AXU

Name No connection to AXU


Detecting unit WAM

Fault source AXU

Meaning The master WAM detected that the AXUdoes not respond to polling messages.



Effect Links to the RNC will not work and callsare not possible.

Note

The recovery time between AXC and WAMis 15 minutes, and the O&M connectiondoes not work then.

The site is reset after the alarm iscancelled.



Instructions 1. Check for alarms on the AXC.

2. Restart the AXC remotely. This will alsocause a BTS restart.

3. Replace the alarming AXC unit.



4.61 No connection to unitName No connection to unit


Detecting unit WAM

Fault source WAM, WSC, WTR, WPA, WSP, WAF,WSM, WMC, WMP, WIB, WPS, WHX,WCI, WIC, WID, IFU, AXU, MHA, WEA,WFA, WOU, WFD, WCC

Meaning The connection to a unit that belongs tothe BTS configuration has been lost.



Effect If the WSC is lost, the redundant WSC isbrought into use automatically.

Depending on whether the WAM is thecabinet master, subrack primary orsecondary WAM, the cell(s) or cell group(s) are lost or their capacity decreases, orthe whole BTS is faulty.

If the alarm source is the WMC or WCI,the BTS is faulty.

If the alarm source is the WTR, WAF,WSM, WOU or WPA, the cell is blocked.

If the alarm source is the WIC, it may notbe possible to read WAF alarms.

Furthermore, additional 'No connection tounit' alarms may be issued from otherunits (WAM, WPA, WTR).

If a cancellation of the alarm 'Noconnection to unit' of the WSM or primaryWAM is sent, a site reset occurs as arecovery action.

This alarm cancels all active alarms forthe same unit.

Reported alarms 7650 BASE STATION FAULTY (O&Mmaster WAM, no redundant WSC, WMC,WCI)

7651 BASE STATION OPERATIONDEGRADED (WAM, WSP, WPS,WPS_EXT, WPS_TR, WIC)

7652 BASE STATION NOTIFICATION (Ifredundant WSC available, WID, BB_WFA,TR_WFA, WFA WHX, WIB)



Alarms

7653 CELL FAULTY (TX/RX-WTR orWAF (all TX/RX WAFs in cell are broken),WSM_TR, WSM, WPA/WMP/WOU (oneWPA/WMP in a cell))

7654 CELL OPERATION DEGRADED(RX-WTR or WAF (a working TX/RX WAFexists in a cell), WPA/WMP (other workingWPA/WMP in a cell)


Instructions 1. Check the alarm history, alarming unitand subrack.

2. If SW updates have been donerecently, reload the SW.

3. If WAF or WIC is alarming, try re-commissioning the site.

4. Check that the unit is properlyconnected. If the unit LED does notlight up, the unit is faulty. The fault mayalso be in the WPS unit or backplane.

5. Check the power cables andconnectors, and I2C bus cables.

Cancel alarms: Removing and insertingthe WIC, WSM or primary WAM causes asite reset. If both WSCs are removed,inserting the first removed WSC back intothe cabinet causes a site reset.

If the 7650 BASE STATION FAULTYalarm is issued, reset the site. First try toreset the site by the software. If that doesnot help, replace the faulty unit.

4.62 No connection to WEA and unable to detectExternal alarms

Name No connection to WEA and unable todetect External alarms


Detecting unit WAM

Fault source WEA

Meaning The WEA unit is missing from the BTS orit cannot be detected.





Effect The external alarms will not be detected.There are problems with reporting doorand smoke alarms, for example.



Instructions 1. Check the WEA and cabling.


To check units behind a same bus, referto the document WCDMA BTSTroubleshooting Instructions.

4.63 Non-fatal ATM traffic overload

Name Non-fatal ATM traffic overload


Detecting unit WAM

Fault source WAM

Meaning Traffic load is approaching the maximumcapacity. However, no data is discardedyet.


Unit status Working

Effect Quality of service may be degraded.



Instructions Check that the ATM configurations in theBTS, AXC and RNC match.

4.64 Not enough WAF resources in LCR

Name Not enough WAF resources in LCR

Product



Alarms


Detecting unit WAM

Fault source WTR

Meaning There are not enough WAF units in a cell.



Effect Some cells are inactive.



Instructions 1. Refer to sections No connection toWAF alarms and No connection to unitin the document WCDMA BTSTroubleshooting Instructions.

2. Increase the number of WAF units inthe BTS.

MetroSite 50: Change the WAF.

4.65 Not enough WSP resources per cell

Name Not enough WSP resources per cell


Detecting unit WAM

Fault source Master WAM

Meaning The number of WSP units in the BTS istoo small. For every three cells, theremust be at least one WSP present.


Unit status Working

Effect The BTS capacity drops, cell(s) may beinactive.





Instructions 1. Check possible WSP, WSM and WAMalarms. If Base Band pooling is in use,check LCG (Local Cell Group)commissioning. Check that all subracksare in working state.

2. Increase the number of WSP units inthe BTS.

4.66 No WSM resources

Name No WSM resources

Product Optima IBBU; Optima Compact RFExtension

Detecting unit WAM

Fault source WSM

Meaning There should be two WSM units in thesubrack 1. The WSM2 must always beconnected when the WSM1 is used. Ifthere is no connection to the WSM2, thisfault is generated for the WSM1.

Event type Start





Instructions Insert the WSM2.

4.67 Oven oscillator clock missing

Name Oven oscillator clock missing


Detecting unit WSC/WMC


Meaning The WSC cannot deliver the clock signalsrequired by the other units.



Alarms



Effect If there is only one clock in the cabinet,the BTS is not operational.

UltraSite: If there is an operating WSC inthe BTS, the redundant clock is broughtinto operation in case the active clockgenerates an alarm.

Reported alarms 7650 BASE STATION FAULTY (Noredundant WSC)

7652 BASE STATION NOTIFICATION(redundant WSC available)

LED display Stable red (WSC/WMC )

Instructions Replace the clock unit.

4.68 Oven oscillator heating failure

Name Oven oscillator heating failure




Meaning The heating of oven oscillator fails andthe unit is broken. The ambienttemperature can also be too low orchange too fast.



Effect If there is only one clock in the cabinet,the BTS can function properly for a fewdays without an external reference, butthe network performance may start todecrease gradually.


Reported alarms 7651 BASE STATION DEGRADED (noredundant WSC)

7652 BASE STATION NOTIFICATION(redundant WSC available)



LED display Blinking red (WSC/WMC)

Instructions 1. Check the active fan alarms.

2. Replace the clock unit.

4.69 POST test failed

Name POST test failed


Detecting unit WAM

Fault source WSP

Meaning The unit or module has been testedduring the BTS power-on self test (POST)and a failure has been detected.

Event type Start


Effect The faulty WSP is not configured, so theBTS capacity decreases.




2. Remove/reinsert the alarming unit.


4.70 Power unit input voltage fault

Name Power unit input voltage fault


Detecting unit WPS

Fault source WPS (AC/DC line)

Meaning The input voltage of the BTS hasdecreased.




Alarms


Effect If the voltage continues to decrease, theBTS stops functioning.


LED display Stable red (WPS)

Instructions 1. Check the other MAINS related activealarms.

2. Check the power supply voltage. If it isOK, replace the power cable.

3. Check the power unit.

4.71 Power unit output voltage fault

Name Power unit output voltage fault


Detecting unit WPS

Fault source WPS

Meaning The output voltage is too low or too high.

Usually the reason for the fault is the unititself, but in some cases the reason canbe the unit that the WPS feeds.

If a short circuit occurs in the fed unit, itmay affect the WPS and the "OutputVoltage Fault" alarm is generated.



Effect The subrack and cell under the WPS unitmay become degraded or faulty.

A single faulty power unit will notadversely affect the operation of otherpower units in the system.

Reported alarms 7650 BASE STATION FAULTY (when thisfault is active for all WPS units)

7651 BASE STATION OPERATIONDEGRADED (single WPS)

LED display Stable red (WPS)

Instructions 1. Check the other active alarms.



2. Check the units that are supplied by thealarming WPS.

3. Check the backplane connectors andcables.

4. Replace the alarming WPS unit.

4.72 R-bus error

Name R-bus error


Detecting unit WSP

Fault source WTR

Meaning The bus between the WSP and WTRdoes not work. The R bus errors areprobably caused by a faulty WSM orWTR.



Effect The BTS capacity possibly decreases.Calls in the affected cell may not bepossible.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WSP)

7653 CELL FAULTY (WTR/TRX)

7654 CELL OPERATION DEGRADED(WTR/TRX)


Instructions 1. If the WSM/WMC also generates analarm from a WTR unit, check the WTRand WSM cable.

2. If there are no active WSM/WMCalarms, the reason for the alarm is afaulty WSM/WMC or WSP.

3. Run a WCDMA BTS loop test to locatethe faulty unit.

4. If the WSP is faulty, block/unblock it.

5. Replace the faulty unit.



Alarms

4.73 ROM disk corrupted during SW updateName ROM disk corrupted during SW update


Detecting unit WAM, WTR, WMP, Nokia WPA

Fault source WAM, WTR, WMP, Nokia WPA

Meaning The file storing to flash fails because of acorrupted file system.

Event type Start

Unit status Working

Effect The SW update does not work.



Instructions Replace the alarming unit.

4.74 SFN synchronization failure

Name SFN synchronization failure


Detecting unit WAM

Fault source WSPC

Meaning The WSP is not synchronised with theWAM.

Event type Start


Effect The BTS capacity decreases and callsmay be dropped.







4.75 SFN synchronization failureName SFN synchronization failure


Detecting unit WAM

Fault source WAM

Meaning WAM internal synchronisation failure.

Event type Start


Effect The BTS capacity decreases, some cellsmay become disabled.



Instructions 1. Check and correct the ATMconfiguration.

2. Replace the WAM.

4.76 SFN synchronization failure

Name SFN synchronization failure


Detecting unit WAM

Fault source Slave WAM

Meaning The slave WAM is not synchronised withthe master WAM.

Event type Start


Effect The BTS capacity decreases, some cell(s) may become faulty.






Alarms


4.77 Smoke alarm

Name Smoke alarm

Product Supreme; Optima IBBU; Optima CompactRF Extension

Detecting unit WEA

Fault source WEA

Meaning The internal smoke detector has detectedsmoke in the cabinet.


Unit status Working

Effect None


LED display N/A

Instructions 1. Check the root cause.

2. If the alarm was false, replace thealarming smoke detector.

4.78 SW does not support commissioning file

Name SW does not support commissioning file


Detecting unit WAM

Fault source WAM

Meaning The software does not support the newcommissioning file loaded to the BTS.

Event type Start


Effect The BTS is not commissioned oroperational.





Instructions 1. Check and correct the contents of thecommissioning file. Load the correctcommissioning file to the BTS.

2. Update the BTS software.

4.79 System frame clock signal missing

Name System frame clock signal missing


Detecting unit WAM

Fault source WAM, WCI

Meaning The WAM does not receive a systemframe clock (SFCLK) from the WCI/WMC,because of the transceiver circuit in theWCI, the receiver circuit in the WAM, orthe system frame clock bus is faulty.

Event type Start


Effect Calls via the faulty sector(s) are notpossible.


LED display Blinking red (WAM)

Instructions 1. Block/unblock the alarming unit (WAM).This ensures that nothing unexpectedhas happened in the unit start-upphase.

2. If that does not help, replace thealarming unit (WAM).

4.80 T-bus error

Name T-bus error

Product MetroSite

Detecting unit WMC



Alarms

Fault source WSP

Meaning The WMC has detected parity orsynchronisation errors in the TX samplesof the incoming T-bus from the WSP unit.


Unit status Working

Effect The capacity drops.

The WTR and WSP capacity in thesubrack remains unused.



Instructions 1. Check the WSP in the same subrack.

2. Check the alarm history. If the alarmoccurs frequently, replace the WMC orWSP.

4.81 Telecom cell enabling or disabling failed

Name Telecom cell enabling or disabling failed


Detecting unit WAM

Fault source LCR

Meaning The cell enabling (the set-up of CPICHand BCH) failed, or the cell disabling (therelease of common channels) failed. Thereason could be a hardware or a busproblem, or a lack of DSP or ATMresources.


Unit status Working

Effect The affected cell state remainsunchanged.


LED display N/A

Instructions 1. Check the other active alarms if WSPcapacity has been decreased.

2. Check if there are enough WSP units.



4.82 Telecom configuration failure

Name Telecom configuration failure


Detecting unit WAM

Fault source WAM, WSP, WTR, WPA/WMP

Meaning A Telecom slave configurations orregistrations failure. A unit RNWconfiguration failure. A Telecom RNWreconfiguration failure. Or a WSP unit toWAM allocation failure.

Event type Start


Effect The affected WAM unit is not operational.In case of a WSP fault, the channelcapacity is lost and cell(s) may becomeunavailable. In case of a WTR or WPA/WMP, the associated cell(s) becomefaulty.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (if unit is WAM, WSP)

7653 CELL FAULTY (TX/RX-WTR, WPA/WMP with no redundancy)

7654 CELL OPERATION DEGRADED(RX-WTR or WPA/WMP with redundancy)


Instructions 1. Block/unblock the alarming unit. Theunit needs to be blocked/unblocked toget it initialised/configured again if therewas an internal failure.

4.83 Timeout, commissioned resource not ready

Name Timeout, commissioned resource notready




Alarms

Detecting unit WAM

Fault source WAM, WPA, WTR, WSM

Meaning The faulty unit has not been configured orinitialised.

Event type Start



Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WAM)

7653 CELL FAULTY (WPA, TX WTR/TRX)

7654 CELL OPERATION DEGRADED(RX WTR/TRX)


Instructions Recommission the site.

4.84 Too many carriers allocated for LPA

Name Too many carriers allocated for LPA

Product Supreme; Optima;Optima IBBU; OptimaCompact RF Extension; MetroSite;Triplemode; MetroSite 50

Detecting unit WAM


Meaning Too many carriers have been allocated tothe WPA/WMP.

Event type Start


Effect The WPA/WMP remains unconfigured.The affected cell stays inactive.



Instructions Remove the additional carrier in theReconfiguration commissioning.



4.85 Traffic flow in a non-existent ATM connectionName Traffic flow in a non-existent ATM

connection


Detecting unit WAM

Fault source WAM, (AXC)

Meaning Traffic flow in a non-existent ATMconnection, for example due to anincorrect configuration.



Effect The BTS capacity may be decreased.



Instructions 1. Check and correct the ATMconfiguration in the BTS, AXC andRNC.

4.86 Transmission clock missing

Name Transmission clock missing

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; Triplemode

Detecting unit WCI

Fault source WCI, (AXU, IFU)

Meaning The clock of the BTS, the WSC/WMCunit, uses the Iub or the signal receivedfrom an external clock as a clockreference. The signal is routed throughthe AXC and WCI to the WSC. This alarmis generated if the WCI does not receivethe clock reference signal.


Unit status Working

Effect Tuning does not follow the externalreference.



Alarms

The BTS continues its operation with itsown oven oscillator.

The BTS can function properly for a fewdays without an external reference, butthe network performance may start todecrease gradually.



Instructions 1. Check the other transmission-relatedalarms, example: link breaks.

2. Check the AXC settings.

3. Check the transmission cabling.

4. Replace the WCI unit.

4.87 TX output power measurement fault

Name TX output power measurement fault


Detecting unit WAM

Fault source WTR, WPA/WMP/WOU

Meaning The WTR or WPA/WMP/WOU outputpower measurement has failed.



Effect The gain control feature is lost and it maygenerate interference to the network.

The NBAP common measurementmessage is incorrect due to missingmeasurement data from the WTR, WPA/WMP/WOU or RF module.

Reported alarms 7653 CELL FAULTY (TX/RX-WTR, WPA/WMP with no redundancy.)

7654 CELL OPERATION DEGRADED(RX-WTR or WPA/WMP withredundancy.)


Instructions



1. Block/unblock the alarming unit. Theunit needs to be blocked/unblocked toget it initialised/configured again if therewas an internal failure.

2. Check the units and the RF cablingbetween the WPA/WMP/WOU andWTR units (refer to the documentWCDMA BTS TroubleshootingInstructions).

4.88 Unit autonomous reset as a recovery action

Name Unit autonomous reset as a recoveryaction


Detecting unit WAM

Fault source WSP, WAM, WTR

Meaning There are problems in a unit. The BTStries to correct the situation by performinga recovery reset to the faulty unit.


Unit status Working

Effect The faulty unit is reset.



Instructions Check the alarm history and other activealarms of the unit.

Note

This alarm does not require any (special)actions.

4.89 Unit blocked

Name Unit blocked

Product



Alarms


Detecting unit WAM

Fault source Supreme: slave WAM, WTR, WPA, WSP,WAF, WSC

MetroSite: WTR, WMP, WSP, WAF

Optima: slave WAM, WTR, WPA, WSP,WAF, WSC

Triple-mode: slave WAM, WTR, WMP,WSP, WAF

MetroSite 50: WTR, WMP, WSP, WAFARIO: WOU

Meaning A unit is blocked with the BTS SiteManager.

The purpose of the fault is to avoidalarms that may rise during the unitmaintenance task.



Effect The BTS does not send alarms related tothe blocked unit to the RNC. Alarmsending to the BTS Site Manager isalways enabled. The alarm cancels arealways sent to the RNC.

It is not possible to establish phone callsthrough the blocked unit.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WAM, WSP)

7653 CELL FAULTY (TX/RX-WTR orWAF (all TX/RX WAFs in a cell arebroken), WPA/WMP (one WPA/WMP in acell))

7654 CELL OPERATION DEGRADED(RX-WTR or WAF (a working TX/RX WAFexists in a cell), WPA/WMP (other workingWPA/WMP in a cell))


Instructions To cancel the alarm, unblock the unit.

4.90 Unit has lost connection to temperature sensor



Name Unit has lost connection to temperaturesensor


Detecting unit WAM

Fault source WAM, WSP, WPS, WSC/WMC, WPA/WMP, WTR, WFA

Meaning The temperature sensor may be brokenor the temperature value from thetemperature sensor is unavailable,unreliable or outside the defined limits.


Unit status Working

Effect Temperature control tries to stabilize thetemperature according to the correlatedtemperature information from the adjacentunits.




4.91 Unit initialization failure

Name Unit initialization failure


Detecting unit WAM

Fault source WSP

Meaning Connection to the WSP fails due to aWSP internal failure.

Event type Start


Effect The BTS capacity decreases, cell(s) mayremain down.





Alarms



4.92 Unit initialization failure

Name Unit initialization failure


Detecting unit WAM

Fault source WSM, WSC/WMC, WAM, WTR, WSP,WPA/WMP, (AXU)

Meaning A unit or an IP address initialisation hasfailed.

Event type Start


Effect If the fault source is WSC/WMC, the BTSis not operational. If the fault source isAXU, connections to the RNC and BTSare not working. If the fault source isWAM, either the ATM or Telecom in thatunit is not working.

Reported alarms 7650 BASE STATION FAULTY (unit isWSC (non redundant), WMC, masterWAM)

7651 BASE STATION OPERATIONDEGRADED (WAM, WSM, WSP,redundant WSC available)

7653 CELL FAULTY (TX/RX-WTR, WPA/WMP)

7654 CELL OPERATION DEGRADED(RX-WTR)

LED display Blinking red (WAM)

Stable red (other faulty units)


2. Check if the non-commissioned WAMis Master WAM. If so, this causes thealarm. Check the alarm history to knowwhy WAMs´ switchover occurred.



3. If the WAM is the alarm source, checkthe RNC IP address in thecommissioning file and modify the file ifneeded. If that does not help, perform apower-off reset.

4. If the previous step does not help,replace the alarming unit.

4.93 Unit not supported by current BTS SW version

Name Unit not supported by current BTS SWversion


Detecting unit WAM

Fault source All possible units.

Meaning An unsupported unit was found in theBTS. Typically this happens when a newunit version is installed and there is anolder BTS SW in use that does notsupport the new unit version.

Event type Start


Effect The BTS capacity decreases.

Reported alarms 7650 BASE STATION FAULTY (O&Mmaster WAM, no redundant WSC, WMC,WCI)

7651 BASE STATION OPERATIONDEGRADED (other WAM, WSP, WPS,WPS_EXT, WPS_TR, WIC)

7652 BASE STATION NOTIFICATION (ifredundant WSC available, WID, BB_WFA,TR_WFA, WFA WHX, WIB, WEA)

7653 CELL FAULTY (TX/RX-WTR orWAF (all TX/RX WAFs in the cell arebroken), WSM_TR, WSM, WPA/WMP(one WPA/WMP in the cell))

7654 CELL OPERATION DEGRADED(RX-WTR or WAF (a working TX/RX WAFexists in the cell), WPA/WMP (otherworking WPA/WMP in the cell))


Instructions Replace the unit or upgrade the BTS SW.



Alarms

4.94 Unit SW download failed

Name Unit SW download failed


Detecting unit WAM

Fault source WAM (ATM SW), WSP (DSP SW), WSPC(MCU SW), WPA (WPA SW)

Meaning The software update to the unit or subunithas failed.

Event type Start


Effect If the ATM SW update to an O&M masterWAM fails or the ATM Post fails, the BTSis not operational.

If the ATM SW update to slave WAMsfails or the ATM Post fails, the subrack isnot operational. If the DSP SW or WSPC(MCU SW) update fails, the BTS capacitydrops. If the WPA SW update fails, thecell is faulty. If the optical interface FPGASW update fails, communication to radiomodules does not work and the BTS isnot operational.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WAM or WSP)

7653 CELL FAULTY (WPA (one WPA inthe cell))

7654 CELL OPERATION DEGRADED(WPA (other working WPA in the cell))


Instructions 1. Block/unblock the WSP.

2. If Step 1 does not help, replace thealarming unit.

OR

Download the BTS SW again.



4.95 Unit synchronization failedName Unit synchronization failed


Detecting unit WAM

Fault source WAM, WSPC

Meaning The WAM/WSPC synchronisation hasfailed.

Event type Start


Effect The BTS capacity possibly decreases.Some cells may become disabled.

Reported alarms 7650 BASE STATION FAULTY (O&Mmaster WAM)

7651 BASE STATION OPERATIONDEGRADED (WSPC)




4.96 Unit temperature is high

Name Unit temperature is high


Detecting unit WAM

Fault source WAM, WSP, WPS, WSC/WMC

Meaning The temperature of a unit exceeds thethreshold value.


Unit status Working

Effect The operation of the BTS possiblydecreases.



Instructions



Alarms

Check the active fan alarms, and theairflow of the BTS.

4.97 Unknown cabinet type

Name Unknown cabinet type


Detecting unit WAM

Fault source WAM

Meaning The cabinet cannot be identified by itsproduct code (or object ID). The problemis probably in the WID id.

Event type Start


Effect The BTS starts up as a previouslydetected cabinet type. If the previouscabinet type cannot be determined, theBTS starts up as a Supreme cabinet.



Instructions 1. Check the WID connection and replaceWID.

4.98 Unknown HW resource

Name Unknown HW resource

Product Supreme; Optima IBBU; Optima CompactRF Extension; MetroSite; Triplemode;MetroSite 50

Detecting unit WAM

Fault source All possible units according to the unit id.

Meaning A unit cannot be identified by its productcode or by its physical device address(object ID).

Event type Start






7651 BASE STATION OPERATIONDEGRADED (WAM, WSP, WPS, WIC,WSC, WMC, WCI, WID, WFA, WHX,WIB, WEA)

7653 CELL FAULTY (TX/RX-WTR orWAF (all TX/RX WAFs in cell are broken),WSM, WPA/WMP (one WPA/WMP incell).)

7654 CELL OPERATION DEGRADED(RX-WTR or WAF (a working TX/RX WAFexists in cell), WPA/WMP (other workingWPA/WMP in cell).)



4.99 [User defined]

Name [User defined]


Detecting unit WEA

Fault source WEA

Meaning High or low voltage on the external alarmline.

The user specifies the fault text duringcommissioning.


Unit status Working

Effect For example, with the intelligentshutdown, the WPA/WMP and the localcell resources are blocked to minimize thepower consumption. Therefore, thebattery backup can keep the AXU unit upand running longer than the other BTSunits.

Reported alarms 7401 - 7424 (EAC1=7401, EAC2=7402and so on)

LED display N/A



Alarms

Instructions [User defined]

4.100 WAF low noise amplifier faulty

Name WAF low noise amplifier faulty


Detecting unit WAF

Fault source WAF

Meaning One of the two RX preamplifiers (one inthe main branch and the other in thediversity branch) is faulty. The LEDindicates the faulty unit.

MetroSite 50: One, some or all of the RXpreamplifiers (max 6) are faulty. The LEDindicates the faulty unit.

Event type Start


Effect There are up to six antennas in a cell andif one of the antennas is functioning, thecell is operational. However, the cell andRX performance are degraded.

Reported alarms 7653 CELL FAULTY (UltraSite, MetroSite,Triple-mode: both branches are faulty.MetroSite 50: all branches are faulty)

7654 CELL OPERATION DEGRADED(UltraSite, MetroSite, Triple-mode: singlebranch. MetroSite 50: one or morebranches)


Instructions 1. Block/unblock the WAF unit. This ismost likely a HW fault, but blocking/unblocking the unit ensures that beforea site visit.

2. If that does not help, replace the faultyunit.

4.101 WAM SFN polling timeout



Name WAM SFN polling timeout


Detecting unit WAM

Fault source Slave WAM

Meaning The slave WAM is not synchronised withthe master WAM.

Event type Start


Effect The BTS capacity decreases. Cells maybecome faulty.




Note

After a WAM bloc/unblock, the BTS will berestarted.


4.102 WCI baseband reference clock failure

Name WCI baseband reference clock failure


Detecting unit WCI

Fault source Master/Redundant WSC

Meaning The master or redundant WSC does notgenerate Baseband Reference Clock(BRCLK) to the WCI because of aninternal failure or a clock driver failure inthe WSC unit.



Effect If there is only one clock in the cabinet,the BTS is not operational.



Alarms


Reported alarms 7650 BASE STATION FAULTY (if bothWSCs are faulty)

7652 BASE STATION NOTIFICATION(else)

LED display N/A

Instructions 1. Block/unblock the active WSC unit.


3. Replace both WSC units.

4.103 WEA power regulator fault

Name WEA power regulator fault


Detecting unit WEA

Fault source WEA

Meaning The WEA unit external interfaceconnectors are connected incorrectly, orthere is a shot circuit in the +5 VCD.


Unit status Working

Effect The external connectors are notfunctioning.



Instructions 1. Disconnect the external cables andcheck whether the alarm disappears.

2. Check the external cables andconnection.

3. If the alarm does not disappear, checkthe WEA and replace it if faulty.



4.104 WIB unit AC line break faultName WIB unit AC line break fault

Product MetroSite

Detecting unit WIB

Fault source WIB, (AC Line)

Meaning There is a mains break. The BTS powersupply is cut off.


Unit status Working

Effect The WIB starts to supply voltage to theWPSM and continues the power supplyfor 10 s.

If the mains power does not recoverduring the 10 seconds, the BTS will shutdown due to the lack of power.



Instructions Check the power supply to the BTS.

4.105 WIB unit battery failure

Name WIB unit battery failure

Product MetroSite

Detecting unit WIB

Fault source WIB

Meaning WIB unit battery failure:. Several battery blocks (cells) are dead

and the back-up system is out of order.. Some of the battery blocks (cells)

reached an overcharge or a dischargevoltage in a stand-by condition.

. The voltage of one cell is notcompatible with the other cell voltages.



Effect The WIB does not work at all, or it cannotsupply sufficient power to the WPS.




Alarms


Instructions 1. Check the battery cablings and cellvoltage levels.

2. Replace the WIB unit or battery.

4.106 WIB unit battery temperature out of range

Name WIB unit battery temperature out of range

Product MetroSite

Detecting unit WIB

Fault source WIB

Meaning Because the heater or heater control unitdoes not work correctly, the temperaturemeasured inside the unit is out of normaltemperature range.


Unit status Working

Effect If the WIB is still used, the battery will runout much sooner than expected.


LED display Blinking red (WIB)

Instructions 1. Check the temperature of the batteryspace.

2. Check the battery temperature sensor.

4.107 WIB unit power back-up time alarm

Name WIB unit power back-up time alarm

Product MetroSite

Detecting unit WIB

Fault source WIB

Meaning The WIB cannot supply nominal power for10 seconds and/or the estimated batterylife is 26 weeks or less.





Effect If the WIB is still used, the battery runsout as shown in the Remaining BatteryLife Indicator.

If the battery life has ended, the "WIB unitbattery failure" alarm is generated.


LED display Blinking red (WIB, battery life still left)

Stable red (WIB, no battery left)

Instructions Replace the WIB unit.

4.108 WMC oven oscillator fault

Name WMC oven oscillator fault

Product MetroSite

Detecting unit WAM

Fault source WMC

Meaning The oven oscillator adjusting area isreaching its limit value. The alarm isactivated if the WMC tunes the ovenoscillator so that the DAC word(parameter to control the oven oscillatoroutput frequency) value becomes lowerthan 205 or greater than 3891 (5% of thetotal adjustment area). The range for theDAC word is 0 - 4095. The cause of thealarm can be:. The Iub reference frequency has been

incorrect for a long time (up to severaldays) due to a fault in the transmissionnetwork synchronisation (which in turnis caused by an equipment fault or asetting error).

Before activating this alarm, the alarm7652 BASE STATION NOTIFICATION:'Difference between BTS master clockand reference frequency' may havebeen active.

. If the BTS-integrated transport partreceives the synchronisationinformation via the 2.048 MHzsynchronisation input (external clocksource), the alarm situation may be



Alarms

caused by a fault in that signal. In thatcase the alarm behaviour notificationslisted with the Iub signal (see above)are also valid here.

. The fast tuning action of the BTSmaster clock may have been executedwithout checking if the reference signalis correct or not. If the reference signalis incorrect during the fast tuningexecution, it may result in adjusting theBTS master clock frequency far fromthe nominal value, which causesserious problems in the networkperformance.

. There is an equipment fault in the BTS.

. Due to the oven oscillator (OCXO)aging inside the WSC unit, the unit maybe approaching the end of its lifetime. Insuch a case, after the alarm activation,the DAC value is quite stable, while inthe other fault cases it may be veryunstable or at the edge of theadjustment area (0 or 4095).

Note that if the alarm 7651 BASESTATION OPERATION DEGRADED:'WMC oven oscillator fault' becomesactive, it may cause the alarm 7652BASE STATION NOTIFICATION:'Difference between BTS master clockand reference frequency' to cancel.



Effect The severity of the fault depends on thesituation:. If the WMC unit (OCXO) is approaching

the end of its lifetime but the referencefrequency is still correct, the BTS andsystem performance may be normal formonths or even one year after thealarm activation (given that the DAC isnot at the edge of the adjustment area).

. The other faults may cause the BTSand system performance to collapsedue to an incorrect air interfacefrequency.



Instructions Background information:



The principle is that in a mobile network,the synchronisation goes from MSC =>RNC => BTS. But in reality, that chainmight be broken and, for example, whenusing leased lines, the BTS may take thereference synchronisation from thetransmission network of another operator.This does not harm the system if thesynchronisation of the leased line serviceprovider is accurate or stable enough.The BTS uses the incomingsynchronisation signal as a reference forthe Air interface, the accuracyrequirement of which is set by 3GPP.

1. In case of fault in the transmissionnetwork synchronisation, the networksynchronisation must be corrected. Thelong-term accuracy of the Iub signalmust be 0.015 ppm or better.


a. Transport part

- Check the alarms of the AXC nodewith the AXC Manager and actaccordingly.

- If there are no alarms, check theAXC synchronization.

b. WMC unit

- If both the Iub reference signalaccuracy and the AXC node are inorder but the WMC unit is stillalarming, run the fast tuningprocedure with the BTS SiteManager.

- If there is no cure in a few minutes,reset the site.

- If that does not help, replace theWMC unit.

3. After the fault situation has beencleared, the BTS master clock may alsorequire tuning, because the BTSmaster clock adjustment is quite slow.The tuning may be done:

- Manually, by changing the DAC word(during a site visit).

- With fast tuning, by which the BTSmaster clock is tuned in a few minutesautomatically near the Iub reference(normal tuning takes care of the finetuning).



Alarms

Note

The fast tuning should only be used in casethe Iub reference signal is known to be agood one. Otherwise the BTS frequencymay be tuned into a totally incorrect value,causing serious problems in the networkperformance.

4.109 WPA power level changed

Name WPA power level changed


Detecting unit WAM

Fault source WPA

Meaning The power level of a replaced WPA unitdiffers from the original WPA unit.



Effect The capacity drops. Cell(s) may remaindown.



Instructions If the WPA is accidentally changed to adifferent power level type of WPA, replacethe WPA unit to the correct power leveltype of WPA.

4.110 WSC oven oscillator fault

Name WSC oven oscillator fault




Detecting unit WSC

Fault source WSC

Meaning The oven oscillator adjusting area isreaching its limit value. The alarm isactivated if the WSC tunes the ovenoscillator so that the DAC word(parameter to control the oven oscillatoroutput frequency) value becomes lowerthan 205 or greater than 3891 (5% of thetotal adjustment area). The range for theDAC word is 0 - 4095. The cause of thealarm can be:. The Iub reference frequency has been

incorrect for a long time (up to severaldays) due to a fault in the transmissionnetwork synchronisation (which in turnis caused by an equipment fault or asetting error). Before activating thisalarm, the alarm 7652 BASE STATIONNOTIFICATION: 'Difference betweenBTS master clock and referencefrequency' may have been active.

. If the BTS integrated transport partreceives the synchronisationinformation via the 2.048 MHzsynchronisation input (external clocksource), the alarm situation may becaused by a fault in that signal. In thatcase the alarm behaviour notificationslisted with the Iub signal (see above)are also valid in this case.

. The fast tuning action of the BTSmaster clock may have been executedwithout checking if the reference signalis correct or not. If the reference signalis incorrect during the fast tuningexecution, it may result in adjusting theBTS master clock frequency far fromthe nominal value, which causesserious problems in the networkperformance.

. There is an equipment fault in the BTS.

. Due to the oven oscillator (OCXO)aging inside the WSC unit, the unit maybe approaching the end of its lifetime. Insuch case, after the alarm activation,the DAC value is quite stable, whereasin the other fault cases it may be veryunstable or at the edge of theadjustment area (0 or 4095).



Alarms

Note that if the alarm 7651 BASESTATION OPERATION DEGRADED:'WSC oven oscillator fault' becomesactive, it may cause the alarm 7652BASE STATION NOTIFICATION:'Difference between BTS master clockand reference frequency' to cancel.



Effect The severity of the fault depends on thesituation:. If the WSC unit (OCXO) is approaching

the end of its lifetime but the referencefrequency is still correct, the BTS andsystem performance may be normal formonths or even a year after the alarmactivation (if the DAC word is not at theedge of the adjustment area).

. The other faults may cause the BTSand system performance to collapsedue to incorrect air interface frequency.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WMC or only one WSC)

7652 BASE STATION NOTIFICATION (ifredundant WSC available)

LED display Stable red (WSC)

Instructions Background information:

The principle is that in a mobile network,the synchronisation goes from MSC =>RNC => BTS. But in reality that chainmight be broken somewhere and, forexample, when using leased lines, theBTS may take the referencesynchronisation from the transmissionnetwork of another operator. This doesnot harm the system if also thesynchronisation of the leased line serviceprovider is accurate/stable enough. TheBTS uses the incoming synchronisationsignal as a reference for the Air interface,the accuracy requirement of which is setby 3GPP.

1. In case of fault in the transmissionnetwork synchronisation, the networksynchronisation must be corrected. Thelong-term accuracy of the Iub signalmust be 0.015 ppm or better.


a. Transport part



. First check the alarms of theAXC node with the AXCManager and act accordingly.

. If there are no alarms, check theAXC synchronisation settings.

b. WSC unit. If both the Iub reference signal

accuracy and the AXC node arein order but the WSC unit is stillalarming, run the fast tuningprocedure with the BTS SiteManager.

. If there is no cure in a fewminutes, reset the site.

. If that does not help, replace theWSC unit.

Note: In case the BTS isequipped with two WSCs, theredundant unit takes over theoperation of the faulty unit. But ifthe fault situation is caused byan incorrect reference signal,both the WSC units may startalarming sooner or later.

3. After the fault situation has beencleared, the BTS master clock may alsorequire tuning, because the BTSmaster clock adjustment is quite slow.The tuning may be done:. Manually, by changing the DAC

word (during a site visit).. Or with fast tuning, by which the

BTS master clock is tuned in a fewminutes automatically near the Iubreference (normal tuning takes careof the fine tuning).

Note, however, that the fast tuningshould only be used in case the Iubreference signal is known to be agood one. Otherwise the BTSfrequency may be tuned into atotally incorrect value, causingserious problems in the networkperformance.

4.111 WSC phase difference jammed to zero reading

Name



Alarms

WSC phase difference jammed to zeroreading


Detecting unit WAM

Fault source WSC, WMC

Meaning The WSC phase measurement is jammedand the tuning operation is degraded.

The problem can be caused by a WSCfault or a too fast frequency change onthe Iub.



Effect The BTS master clock (OCXO) is in thehold-over mode because it cannot use thesynchronisation reference information.The BTS air interface stability is notaffected, but the accuracy starts to driftslowly. It may take even several weeksbefore the BTS/RAN operations start tobe affected.

Reported alarms 7651 BASE STATION OPERATIONDEGRADED (WMC or only one WSC)

7652 BASE STATION NOTIFICATION (ifredundant WSC available)

LED display Blinking red (WCS)

Instructions 1. If the basic accuracy of the Iub signal isin order but there is too much instability(the jitter/wander is outside theacceptable limits), the synchronisationof the transmission network must becorrected. The limits for the jitter/wander are defined in the ITU-T G.823.No actions on the BTS are needed.

2. Reset the site and wait about 10minutes.

3. Try a power-on reset. If the alarmreappears, replace the unit.

If the alarm reappears during the nextfew weeks or the clock seems unstable,replace the unit.

Background information:

The principle in the mobile network is thatthe synchronisation goes from MSC =>RNC => BTS. But in reality that chainmight be broken somewhere and, for



example, when using leased lines theBTS may take the referencesynchronisation from the transmissionnetwork of another operator. This doesnot harm the system if also thesynchronisation of the leased line serviceprovider is accurate/stable enough. TheBTS uses the incoming synchronisationsignal as a reference for the Air interface,the accuracy requirement of which is setby 3GPP.

4.112 WSC switch unsuccessful

Name WSC switch unsuccessful


Detecting unit WAM

Fault source Redundant WSC

Meaning The WSC recovery switch over failed.

Event type Start

Unit status Working

Effect The BTS is not operational because theactive WSC was removed or it is faultyand the recovery switch wasunsuccessful. There is no working WSCunit and the synchronisation does notwork.


LED display Green

Instructions 1. Fast tune the active unit.

2. Block/unblock the alarming unit. Thismay cause a BTS reset.

4.113 WSC/WMC transmission clock missing

Name WSC/WMC transmission clock missing




Alarms



Meaning The clock of the BTS, the WSC/WMCunit, uses the Iub or the signal receivedfrom an external clock as a clockreference. The signal is routed throughthe AXC and WCI to the WSC. This alarmis generated if the WCI does not receivethe clock reference signal.



Effect Tuning does not follow the externalreference.

The BTS continues its operation with itsown oven oscillator.

The BTS can function properly for a fewdays without an external reference, butthe network performance may start todecrease gradually.


LED display Stable red (set by the WSC/WMC itself)

Instructions 1. Check the other transmission-relatedalarms, example, link-breaks.

2. Check the AXC settings.

3. Check the transmission cablings.


4.114 WSMA ST-bus error

Name WSMA ST-bus error


Detecting unit WSM

Fault source Alarming WSM, (cable)

Triple-mode: WTR (cable)

Meaning



The TX signal is transported from theWSP unit to all WTR units via the WSMs.The WSM units in different subracks areconnected to each other via the STbuses. This alarm is generated when theWSM unit detects errors in the incomingST bus from the adjacent WSM unit.

The reason for the failure is the cablebetween the WSM front panels or theWSM units indicated in the alarm.


Unit status Working

Effect The capacity drops. The cell is lost.


LED display N/A

Instructions 1. Run the WCDMA BTS loop test.

2. Check the WSM cables.

3. Replace the units indicated in the alarmone by one and check whether theproblem is cleared. Refer to thedocument WCDMA BTSTroubleshooting Instructions.

4.115 WSMA T-bus error

Name WSMA T-bus error


Detecting unit WSM

Fault source WSP

Meaning The signal is transported from the WSPunit to the WTR unit via the WSM. Thisalarm is generated when the WSM unitdetects errors in the incoming T-bus fromthe WSP unit.

The reason for the failure is probably theWSP or WSM unit. The unit may havebeen installed incorrectly or the backplanecabling is faulty.


Unit status Working

Effect The capacity drops.



Alarms



LED display N/A

Instructions 1. Replace the units indicated in the alarmone by one and check whether theproblem is cleared.

Refer to the document WCDMA BTSTroubleshooting Instructions.

4.116 WSMB does not receive frame clock

Name WSMB does not receive frame clock

Product Supreme; Optima; Triplemode

Detecting unit WSMB

Fault source WCI

Meaning The WSMB does not receive the SystemFrame Clock (SFCLK) correctly from theWCI unit.

This fault may appear, if the only clockunit (WSC) is removed.



Effect The BTS capacity is degraded.

The WTR and WSP capacity in thesubrack is not used.



Instructions 1. Block/unblock the alarming WSM.

Note

This will cause BTS reset.

2. Replace the WCI unit and checkwhether the alarm is cleared.

3. Check the backplane cables andconnectors.



4.117 WSMB RR-bus errorName WSMB RR-bus error

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; Triplemode;MetroSite 50

Detecting unit WSMB/WMC

Fault source WTR

Meaning The signal is transported from the WTR tothe WSP via the WSM. This alarm isgenerated when the WSM/WMC unitdetects errors in the incoming RR busfrom the WTR unit.

The reason for the failure is probably theWTR or WSMB/WMC unit. The unit mayhave been installed incorrectly or thebackplane cabling is faulty.

Event type Start


Effect The capacity drops. The cell is lost. Inmost cases, this generates an R bus erroralarm and the cell is blocked.

Reported alarms 7653 CELL FAULTY (TX/RX-WTR)




2. Replace the units indicated in the alarmone by one and check whether theproblem is cleared.

3. Check the backplane cables andconnectors. Refer to the documentWCDMA BTS TroubleshootingInstructions.

4.118 WSMB SR-bus error

Name WSMB SR-bus error


Detecting unit WSM

Fault source Adjacent/alarming WSM, (cable)



Alarms


Meaning UltraSite:

The RX signal is transported from theWTR unit to all WSP units via the WSMs.The WSM units in different subracks areconnected to each other via the SRbuses. This alarm is generated, when theWSM unit detects errors in the incomingSR bus from the adjacent WSM unit. Thereason for the failure is the cable betweenthe WSM front panels or the WSM unitsindicated in the alarm.

Triple-mode:

The RX signal is transported from theWTR30 and WRT20 units (connected tothe SR bus) to the WSP units via the SRbus. This alarm is generated, when theWSM detects errors in the incoming SRbus from the WTR unit.

The reason for the failure is the WSM orWTR unit or the cable between the WSMfront panel and the backplane.

Event type Start


Effect The capacity drops. The cell is lost. In themost cases, this generates an R bus erroralarm and the cell is blocked.






4.119 WSMB ST-bus error

Name WSMB ST-bus error


Detecting unit WSM



Fault source Alarming WSM, (cable)


Meaning The TX signal is transported from theWSP unit to all WTR units via the WSMs.The WSM units in different subracks areconnected to each other via the STbuses. This alarm is generated when theWSM unit detects errors in the incomingST bus from the adjacent WSM unit.

The reason for the failure is the cablebetween the WSM front panels or theWSM units indicated in the alarm.

Event type Start


Effect The capacity drops. The cell is lost.






4.120 WSMB T-bus error

Name WSMB T-bus error

Product Supreme; Optima; Optima IBBU; OptimaCompact RF Extension; Triplemode;MetroSite 50

Detecting unit WSM/WMC

Fault source WSP

Meaning The signal is transported from the WSPunit to the WTR unit via the WSM. Thisalarm is generated when the WSM unitdetects errors in the incoming T-bus fromthe WSP unit.

The reason for the failure is probably theWSP or WSM unit. The unit may havebeen installed incorrectly or the backplanecabling is faulty.



Alarms

Event type Start









4.121 WSP PCI-bus failure

Name WSP PCI-bus failure


Detecting unit WSPC

Fault source WSPC

Meaning There is a fault in the internal WSP PCIbus target (DSP) connections. Some ofthe WSP DSP processors may be brokenand out of use.

Event type Start


Effect The WSP unit resources are notavailable. The BTS capacity decreases.






4.122 WSP unit internal failureName WSP unit internal failure


Detecting unit WAM

Fault source WSP

Meaning The WAM and WSP are notsynchronised.

Event type Start







4.123 WTR internal clock faulty

Name WTR internal clock faulty


Detecting unit WTR

Fault source WTR

Meaning The WTR internal system clock ismissing. This can be caused by a missingor bad quality reference clock signal fromthe WSC, or a WTR unit HW failure. Thetransmitted and received frequencies areincorrect.

Event type Start



Reported alarms 7653 CELL FAULTY (TX/RX-TRX)

7654 CELL OPERATION DEGRADED(RX-TRX)



Alarms





4.124 WTR internal clock faulty

Name WTR internal clock faulty


Detecting unit WTR

Fault source WTR

Meaning The WTR VCXO PLL is not locked. Thiscan be caused by a missing or badquality reference clock signal from theWSC or a WTR unit HW failure. Thetransmitted and received frequencies areincorrect.

Event type Start









4.125 WTR local oscillator not locked

Name WTR local oscillator not locked




Detecting unit WTRB

Fault source WTRB

Meaning The TX IF synthesizer (common to bothTX chains) cannot lock to the definedfrequency.




Reported alarms 7653 CELL FAULTY (TX-WTR)

7654 CELL DEGRADED (RX-WTR)




4.126 WTR loop synthesizer not locked

Name WTR loop synthesizer not locked


Detecting unit WTR

Fault source WTR

Meaning The RF loop does not function. Thetransmitter output signal is not down-converted to the receiver frequency.


Unit status Working

Effect The RF loop tests do not function. Thenormal RX and TX functionality of theWTR can continue undisturbed.



Instructions 1. Try to perform the loop test again.

2. Block/unblock the alarming unit.




Alarms

4.127 WTR output power decreasedName WTR output power decreased


Detecting unit WTR

Fault source WTR

Meaning The TX1 RF and/or TX2 RF signal levelof the main RF output is lower than thepredetermined level.

Event type Start







4.128 WTR output power fault

Name WTR output power fault


Detecting unit WTRB

Fault source WTRB

Meaning An amplifier stage is out of order in theTX chain. The TX is out of order andneeds to be shut down. The downlinktransmission of the TX must be stopped.

Event type Start









4.129 WTR power supply voltage faultName WTR power supply voltage fault


Detecting unit WTRA

Fault source WTRA

Meaning There is a fault in the power feed or RFcabling, or there is external interference.

One or more critical power supplyvoltages or BIAS currents are outside theallowed range.



Effect The WTR does not transmit.

One or both of the WTR receivers are notreceiving. If either of the receivers isreceiving, the cell is operational, but thecell performance is degraded due to amissing diversity receiver.




Instructions 1. Block/unblock the WTR unit belongingto the alarming cell.

2. Block/unblock the WAF unit belongingto the alarming cell.

3. Check the RF cabling, connectors,WTR backplane connectors, externaldevices in the antenna line (forexample, MHAs), and externalinterference of RX band (with aspectrum analyser). Refer to thedocument WCDMA BTSTroubleshooting Instructions.

4.130 WTR RT-bus fault

Name WTR RT-bus fault

Product



Alarms


Detecting unit WTR

Fault source WTR

Meaning The bus clock signal is corrupted ormissing in the RT bus. The signalfrequency should be exactly half of thesystem clock frequency.








2. Check the WSM, WSP and WTR.

Note

The problem can be in the unit connector orbackplane cablings.

4.131 WTR synthesizer is not locked

Name WTR synthesizer is not locked


Detecting unit WTR

Fault source WTR

Meaning The TX & RX RF synthesizer or the RXIF synthesizer is not locked (or the RFsynthesizer buffer amplifier is faulty). Theoutput frequency of the transmitter can bewrong or missing, or the receiver mightreceive a wrong frequency or is notreceiving.

Event type Start




Effect The WTR cannot transmit and/or receiveanything depending on which synthesizer(TX/RX) is faulty.



7655 CELL NOTIFICATION (RX-TRX)




4.132 WTR temperature is high

Name WTR temperature is high


Detecting unit WTR

Fault source WTR

Meaning The internal temperature of the WTR isdangerously high.







Instructions 1. Check the other active temperature orcooling fan-related alarms.

2. If no reason can be found, the sensor isprobably broken. Replace the unit.



Alarms

Documents

BTS Alarm Descriptions - ST3 Telkomalfin.dosen.st3telkom.ac.id/.../12/WCDMA-BTS-Alarm-Descriptions.pdf · NetAct is used for handling the ... family, Nokia MetroSite WCDMA Base Station