Base Station Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7401 EXTERNAL AL 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
7402 EXTERNAL AL 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7403 EXTERNAL AL 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7404 EXTERNAL AL 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7405 EXTERNAL AL 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7406 EXTERNAL AL 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7407 EXTERNAL AL 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7408 EXTERNAL AL 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7409 EXTERNAL AL 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7410 EXTERNAL AL 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7411 EXTERNAL AL 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7412 EXTERNAL AL 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7413 EXTERNAL AL 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7414 EXTERNAL AL 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7415 EXTERNAL AL 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7416 EXTERNAL AL 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7417 EXTERNAL AL 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7418 EXTERNAL AL 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7419 EXTERNAL AL 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7420 EXTERNAL AL 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7421 EXTERNAL AL 21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7422 EXTERNAL AL 22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7423 EXTERNAL AL 23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7424 EXTERNAL AL 24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7425 EXTERNAL AL 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7426 EXTERNAL AL 26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7650 BASE STATION FAULTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7651 BASE STATION OPERATION DEGRADED . . . . . . . . . . . . . . . . 50
7652 BASE STATION NOTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . 74
7653 CELL FAULTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
7654 CELL OPERATION DEGRADED . . . . . . . . . . . . . . . . . . . . . . . . 131
7655 CELL NOTIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
7656 BASE STATION CONNECTIVITY LOST . . . . . . . . . . . . . . . . . . 162
7657 BASE STATION CONNECTIVITY DEGRADED. . . . . . . . . . . . . 164
7665 BASE STATION TRANSMISSION ALARM . . . . . . . . . . . . . . . . 166
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Summary of changes
Flexi Multiradio BTS LTE Alarms
Summary of changes
Changes between document issues are cumulative. Therefore, the latest document
issue contains all changes made to previous issues.
Changes between issues 04A (2012-10-18, RL40) and 04B (2013-01-22, RL40)
Editorial and structural changes have been made.
Changes between issues 04 (2012-07-24, RL40) and 04A (2012-10-18, RL40)
The following alarms have been updated:
•
•
•
C2 General
•
•
•
•
•
•
BASE STATION FAULTY
BASE STATION NOTIFICATION
BASE STATION OPERATION DEGRADED
CELL FAULTY
CELL NOTIFICATION
CELL OPERATION DEGRADED
BASE STATION CONNECTIVITY DEGRADED
BASE STATION CONNECTIVITY LOST
BASE STATION TRANSMISSION ALARM
Changes between issues 04 DRAFT (2011-12-14, RL40) and 04 (2012-07-24, RL40)
The following alarms have been updated:
•
•
•
•
•
•
•
•
4
BASE STATION FAULTY
BASE STATION NOTIFICATION
BASE STATION OPERATION DEGRADED
CELL FAULTY
CELL NOTIFICATION
CELL OPERATION DEGRADED
BASE STATION CONNECTIVITY DEGRADED
BASE STATION TRANSMISSION ALARM
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Flexi Multiradio BTS LTE Alarms
Overview of Flexi Multiradio BTS LTE Alarms
1 Overview of Flexi Multiradio BTS LTE Alarms
This document describes the alarms and alarm handling of the Flexi Multiradio BTS
LTE. The base station software uses these alarms as a basis for internal diagnosis and
fault reporting through the OMS to the Operations Support System (OSS) and BTS Site
Manager. For troubleshooting instructions, see Flexi Multiradio BTS LTE Troubleshooting.
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Base Station Alarms
Flexi Multiradio BTS LTE Alarms
2 Base Station Alarms
2.1
7401 EXTERNAL AL 1
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 1.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
6
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2.2
Base Station Alarms
7402 EXTERNAL AL 2
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 2.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.3
Flexi Multiradio BTS LTE Alarms
7403 EXTERNAL AL 3
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 3.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
8
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2.4
Base Station Alarms
7404 EXTERNAL AL 4
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 4.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.5
Flexi Multiradio BTS LTE Alarms
7405 EXTERNAL AL 5
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 5.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
10
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2.6
Base Station Alarms
7406 EXTERNAL AL 6
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 6.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.7
Flexi Multiradio BTS LTE Alarms
7407 EXTERNAL AL 7
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 7.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
12
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2.8
Base Station Alarms
7408 EXTERNAL AL 8
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 8.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.9
Flexi Multiradio BTS LTE Alarms
7409 EXTERNAL AL 9
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 9.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
14
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2.10
Base Station Alarms
7410 EXTERNAL AL 10
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 10.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.11
Flexi Multiradio BTS LTE Alarms
7411 EXTERNAL AL 11
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 11.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
16
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2.12
Base Station Alarms
7412 EXTERNAL AL 12
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 12.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.13
Flexi Multiradio BTS LTE Alarms
7413 EXTERNAL AL 13
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 13.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
18
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2.14
Base Station Alarms
7414 EXTERNAL AL 14
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 14.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.15
Flexi Multiradio BTS LTE Alarms
7415 EXTERNAL AL 15
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 15.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
20
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2.16
Base Station Alarms
7416 EXTERNAL AL 16
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 16.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.17
Flexi Multiradio BTS LTE Alarms
7417 EXTERNAL AL 17
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 17.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
22
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2.18
Base Station Alarms
7418 EXTERNAL AL 18
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 18.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.19
Flexi Multiradio BTS LTE Alarms
7419 EXTERNAL AL 19
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 19.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
24
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2.20
Base Station Alarms
7420 EXTERNAL AL 20
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 20.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.21
Flexi Multiradio BTS LTE Alarms
7421 EXTERNAL AL 21
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 21.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
26
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2.22
Base Station Alarms
7422 EXTERNAL AL 22
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 22.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.23
Flexi Multiradio BTS LTE Alarms
7423 EXTERNAL AL 23
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 23.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
28
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2.24
Base Station Alarms
7424 EXTERNAL AL 24
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user in a hardware
database.
The effect of the alarm depends on the purpose that was configured for the user-defined
alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm number 24.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Base Station Alarms
2.25
Flexi Multiradio BTS LTE Alarms
7425 EXTERNAL AL 25
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user
in a hardware database.
The effect of the alarm depends on the purpose that was configured for
the user-defined alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm
number 25.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when
the fault has been corrected.
30
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2.26
Base Station Alarms
7426 EXTERNAL AL 26
Probable cause: Indeterminate
Event type: Environmental
Default severity: Minor
Meaning
This is an external user-defined alarm. The alarm is defined by the user
in a hardware database.
The effect of the alarm depends on the purpose that was configured for
the user-defined alarm input in the BTS.
Instructions
The operation depends on the type of alarm that is used as external alarm
number 26.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when
the fault has been corrected.
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Base Station Alarms
2.27
Flexi Multiradio BTS LTE Alarms
7650 BASE STATION FAULTY
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Critical
Meaning
A critical fault (or faults) has occurred in the base station.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see the
source of the alarm and instructions fields of the corresponding alarms).
In case of the FSM failure (FSM or FSM sub-unit is reported as source) it is possible that
other units are also reported as faulty since it is impossible for them to continue functioning without a
system module. In such case replace the system module first and
check if the modules previously marked as Faulty are now in Working state.
Below is the list of BTS fault(s) which may have caused this alarm in BTS LN4.0 release.
In the case of an earlier SW release and if you need more detailed fault descriptions,
LTE System Libraries. The BTS fault descriptions are also included in BTS SW release
documentation. If that does not help, contact your local Nokia Siemens Networks representative.
FAULT NAME
Antenna link is down
FAULT ID
476: EFaultId_Rp3BusError
MEANING
Antenna (RP3) link is down: transmitter or receiver drops from synchronization.
32
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Base Station Alarms
INSTRUCTIONS
FlexiBTS:
1. If the alarming module is the System Module (FSM1), restart BTS.
2. If that does not help, replace the alarming FSM.
FAULT NAME
BB bus message collision error
FAULT ID
2018: EFaultId_Muksu_StxPortCollAl
MEANING
Routed baseband bus messages towards the connected module have collided; the data
in the output baseband internal link is lost because the baseband bus is incorrectly configured.
INSTRUCTIONS
1. Check antenna mapping to the local cells in the commissioning file.
2. Check the cables between the System Module and the connected module.
3. Replace the alarming module.
FAULT NAME
BB bus reception error (summing device)
FAULT ID
2016: EFaultId_Muksu_SMTimeOffAl
MEANING
The master frame in the received baseband bus frame is not in the correct place related
to the internally generated master frame pulse. Either the frame has been set into the
wrong place (PI delay) or the data itself is in the wrong place.
INSTRUCTIONS
1. Check the cables between the System Module and the connected module.
2. Replace the unit that causes the alarm (System Module).
FAULT NAME
BB bus transmission error
FAULT ID
2017: EFaultId_Muksu_SRx10b8bAl
MEANING
A decoding error has been detected in the baseband internal link. The data packet is
lost, or the content is corrupted.
This situation is also triggered when the links do not synchronize with each other.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Reset the System Module.
3. Replace the alarming module (System Module).
FAULT NAME
BTS Blocked
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FAULT ID
50: EFaultId_BTSBlockedAl
MEANING
The BTS is blocked with BTS Site Manager. The purpose is to avoid fault indications that
might be raised during a BTS maintenance task.
INSTRUCTIONS
To cancel the fault, unblock the BTS. Unblocking the BTS causes a Site Reset (FSMr3)
or Bts Reset (FSMr2).
FAULT NAME
BTS configuration not supported
FAULT ID
4097: EFaultId_BtsConfNotSupportedAl
MEANING
FSP does not support requested BTS configuration.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Change BTS configuration.
2. Reset BTS.
FAULT NAME
BTS file error
FAULT ID
1802: EFaultId_FileRequestFlashAl
MEANING
BPF file or optical interface FPGA file is invalid or missing. The FSP MCU SW file is
invalid or missing.
INSTRUCTIONS
Note: Perform the following steps in the listed order until the fault disappears:
1. Use BTS Site Manager to perform a full commissioning to the BTS by using the
NetAct backup upload SCF file as template.
2. Download two different software packages so that the faulty file is removed from the
BTS.
3. Download the software again.
4. Replace the System Module.
FAULT NAME
BTS internal SW management problem
FAULT ID
3090: EFaultId_BtsInternalSwManagementProblem
MEANING
A software update to a module or subassembly has failed, or a corrupted SW file has
been detected in the FLASH.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
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Base Station Alarms
FlexiBTS:
1. Check the other active BTS faults. If the ROM disk is corrupted, change the alarming
module.
2. Reset the RF Module and/or System Module, depending on the BTS fault source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace the alarming module.
FAULT NAME
BTS reset required
FAULT ID
4001: EFaultId_BtsResetNeededAl
MEANING
The BTS detected an RF Module that cannot be taken into use without a BTS reset. The
RF Module type differs from the previous one or the RF module was not present during
startup.
FSP overheat occured. FSP temeperature back to normal and BTS reset is needed to
take the card back to use.
BTS startup: No FSP units detected by the time RP3 configuration starts.
INSTRUCTIONS
Reset (block/unblock) the BTS.
FAULT NAME
BTS vendor specific file fault
FAULT ID
6262: EFaultId_InvalidVendorSpecificFile
MEANING
There was an opening, reading, or file content problem with a BTS vendor- specific file
at BTS startup.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults.
2. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace FSM.
FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
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Flexi Multiradio BTS LTE Alarms
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
FAULT NAME
Baseband bus configuration of <x> was rejected
FAULT ID
1811: EFaultId_BbBus_ConfFailedAl
MEANING
The baseband bus related configuration of <x> was rejected by the HW SW, DSP or RF
SW.
INSTRUCTIONS
Replace the alarming module.
FAULT NAME
Boot configuration inconsistency detected
FAULT ID
4102: EFaultId_BootConfigurationInconsistencyAl
MEANING
During SW update it was detected that configurations of active and passive SW in HW
unit are same. Active and passive SW configuration are compared:
- before SW download,
- during SW activation before active and passive SW switch,
- during start-up.
INSTRUCTIONS
Replace the faulty unit.
FAULT NAME
Commissioning error: <x>
FAULT ID
3060: EFaultId_CommissioningError
MEANING
Some of the commissioning parameters are either missing or faulty, or there is a
mismatch between them.
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INSTRUCTIONS
C2 General
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the commissioning parameters with the BTS Site Manager Commissioning
Wizard.
2. Load the correct commissioning file to the BTS.
FAULT NAME
Communication failure
FAULT ID
1806: EFaultId_CommunicationFailureAl
MEANING
Communication with an application failed. It has not replied to the message that has
been sent/resent to it.
INSTRUCTIONS
FlexiBTS:
1. Check that the unit/module is properly connected. If the unit/module LED does not
light up, the unit/module is faulty. Check the alarming unit/module.
2. Check the fault history.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
3. Check the Network management system alarms for the alarming local cell (LCR).
4. Recommission the BTS to ensure that all parameters are correctly configured.
FAULT NAME
DSP overheated
FAULT ID
4101: EFaultId_DspOverheatingAl
MEANING
DSP overheating was detected during DSP initialization.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming FSP module.
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FAULT NAME
FSP in resetting state
FAULT ID
4068: EFaultId_FspResetAl
C2 General
MEANING
FSP is undergoing a cold reset.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears:
FlexiBTS:
1. Reset the BTS.
2. Replace the faulty module/unit.
FAULT NAME
FSP overheating
FAULT ID
4077: EFaultId_FspOverheatingAl
MEANING
Temperature on FSP board exceeds critical threshold value.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming module.
FAULT NAME
Failure in optical RP3 interface
FAULT ID
3030: EFaultId_FailureInOptical_Rp3Interface
MEANING
The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two
modules. The failure cannot be assigned to a specific module but
there are several possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module. Note that dirty optical
connectors may cause the signal level to drop too low.
3. Depending on the fault source, reset the RF Module and/or System Module by blocking/unblocking it.
4. Replace the alarming module's Small Form Factor Pluggable (SFP). Check also the
SFP in the other end and replace it, if needed.
5. Replace the alarming RF Module.
6. If the System Module is the only alarming source or replacing the RF Module does
not clear the fault situation, replace the alarming System Module.
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FAULT NAME
Failure in replaceable baseband unit
FAULT ID
3003: EFaultId_FbiaFailureAl
MEANING
The BTS has detected an abnormal operation or a failure in the BTS replaceable
baseband unit.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault indication disappears.
C2 General
1. Check the other active BTS faults and act accordingly.
2. Check if the plug-in type baseband unit is installed correctly.
3. Reset the alarming baseband unit.
4. Replace the alarming baseband unit.
FAULT NAME
Fatal OSE Error
FAULT ID
418: EFaultId_OseFatalErr
MEANING
The operating system (OSE) goes into the error handler with a fatal status. The cause
can be, for example, an out of memory situation.
If only one FSP in BTS generates this fault, there is malfunction in one of the FSP submodules. If all
FSPs generate this fault, there is malfunction in the FSM.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Reset the System Module.
2. Replace the System Module.
FAULT NAME
Fault diagnostics rule file error
FAULT ID
1866: EFaultId_RulesMissingAl
1867: EFaultId_RulesParsingAl
MEANING
The Fault diagnostics rule file is missing or its parsing has failed.
INSTRUCTIONS
Note: Perform the following steps in the listed order until the fault disappears:
1. Download two different software packages so that the faulty file is removed from the
BTS.
2. Download the software again.
3. Replace the System Module.
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FAULT NAME
File System access failed
FAULT ID
4088: EFaultId_FileSystemAccessFailedAl
MEANING
File System access operation like:
- File System mounting
- file opening failed.
INSTRUCTIONS
Update SW to the BTS, unless it is automatically updated by NetAct.
FAULT NAME
Firmware SW mismatch
FAULT ID
2056: EFaultId_SwMismatchAl
C2 General
MEANING
The SW update to the BTS has failed or BTS SW corrupted.
INSTRUCTIONS
1. Switch to recently active BTS configuration.
2. Retry the SW update.
FAULT NAME
Frame clock deviation fault
FAULT ID
2014: EFaultId_Muksu_SFCRCompDevAl
MEANING
Synchronization to the clock control unit frame pulse has been achieved earlier, but it
differs from the currently received frame pulse. The internally generated frame clock
might have drifted.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Reset the alarming System Module.
3. Replace the alarming System Module.
FAULT NAME
Frame number synchronization error in optical interface
FAULT ID
2047: EFaultId_OIC_FrSyncLostAl
MEANING
The timing of the new RP1 synchronization burst deviates from the present RP1 timing
maintained in the System Module.
INSTRUCTIONS
1. Reset the System Module that causes the alarm.
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2. If resetting the module does not help, replace the System Module that causes the
alarm.
FAULT NAME
Incompatible SW version detected
FAULT ID
23: EFaultId_IncompatibleSwVersionAl
24: EFaultId_ObsoleteSwVersionAl
MEANING
A new module with incompatible SW has probably been inserted in the BTS.
INSTRUCTIONS
Update compatible SW to the BTS (check the SW versions to see the active SW version,
and update the active SW version), unless it is automatically updated by NetAct.
FAULT NAME
Incorrect radio network parameters
FAULT ID
6252: EFaultId_FailureInNetworkPlanFile
MEANING
There was an opening, reading or file content problem with a radio network
C2 General
configuration file at the BTS startup or at activation of delta configuration
file. The detected problem can be a file handling problem (for example
open, read write operations fail) as well as a contents problems (for example
no valid RAML2.1 format).
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1.
Check the commissioning parameters with the BTS Site Manager Commissioning
Wizard.
2.
Load the correct commissioning file to the BTS.
FAULT NAME
Internal MTU configuration failure
FAULT ID
4025: EFaultId_MtuConfigurationFailureAl
MEANING
Internal Maximum Transfer Unit (MTU) configuration failed on FCM or FSP.
INSTRUCTIONS
1. Reset the alarming System Module.
2. Replace the alarming System Module
FAULT NAME
Invalid Configuration file
FAULT ID
4036: EFaultId_InvalidConfigurationFileAl
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MEANING
The commissioning file is missing, or an incorrect SCF file has been detected during
BTS startup as follows:
a) Commissioning data: the commissioning file is missing or a parameter has a missing
or incorrect value.
b) RNW data: "RNW not found", "RNW has wrong format", "RNW could not be parsed",
"RNW has wrong schema", "Validation failed due to incompatible data" or "no RNW cell
managedObject is created"
INSTRUCTIONS
1. Check and correct the contents of the commissioning file.
2. Recommission the BTS with the valid commissioning file.
FAULT NAME
Master unit has lost connection to the slave unit
FAULT ID
4019: EFaultId_KeepAliveStatusErrorAl
MEANING
Connection to the DSP submodule has been lost or the submodule reports an error situation.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
FlexiBTS:
C2 General
1. Reset the BTS.
2. Replace the faulty module.
FAULT NAME
Module dangerously overheating
FAULT ID
4071: EFaultId_SysDangerouslyOverheatAl
MEANING
The highest validated temperature value on the FSP board exceeds the threshold value.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming module.
FAULT NAME
No connection to Flexi transport submodule
FAULT ID
3511: EFaultId_NoConnectionToFtAl
MEANING
The connection to the Flexi Transport submodule (FTM) is lost.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
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FlexiBTS:
1. Reset the site.
2. Replace the Transport submodule, which is located inside the System Module.
FAULT NAME
No connection to unit
FAULT ID
10: EFaultId_NoConnectionToUnitAl
MEANING
The connection to a module that belongs to the BTS configuration has been lost.
INSTRUCTIONS
FlexiBTS:
1. Check that the module is properly connected. If the module LED does not light up, the
module is faulty. Check the alarming module.
2. Check the fault history.
FAULT NAME
Not able to synchronize baseband bus with <x>
FAULT ID
1815: EFaultId_BbBus_SyncFailedAl
MEANING
The baseband bus synchronization towards <x> failed.
INSTRUCTIONS
FlexiBTS:
Change the faulty module.
FAULT NAME
C2 General
Oven oscillator Missing Pulse
FAULT ID
1820: EFaultId_OcxoPulseMissingAl
MEANING
The output signal of the OXCO has some problems and one or more clock pulses are
missed.
INSTRUCTIONS
1. Block/unblock the System Module.
2. Replace the System Module.
FAULT NAME
Oven oscillator clock missing
FAULT ID
1819: EFaultId_OcxoClkMissAl
MEANING
The output signal of the OXCO is missing and the FCM/FCT/SCR cannot deliver the
30.72 MHz System Clock required by the other units.
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INSTRUCTIONS
1. Block/unblock the System Module.
2. Replace the System Module.
FAULT NAME
Oven oscillator heating failure
FAULT ID
1817: EFaultId_Ov_Osc_HeatAl
MEANING
The OCXO warm-up takes too long and the OCXO does not become active within a
period of eight minutes from the power-on. The ambient temperature can also be too low
or it changes too fast.
INSTRUCTIONS
FlexiBTS:
Replace the alarming System Module.
FAULT NAME
POST test failed
FAULT ID
69: EFaultId_Post_test_failedAl
MEANING
The unit or module has been tested during the BTS power-on self test (POST) and a
failure has been detected.
INSTRUCTIONS
FlexiBTS:
1. Block/unblock the alarming unit/module.
2. Remove/reinsert the alarming unit/module.
3. Replace the alarming unit/module.
FAULT NAME
SRIO chain configuration was rejected
C2 General
FAULT ID
4015: EFaultId_Srio_ConfFailedAl
MEANING
The baseband bus related SRIO configuration for Faraday core was rejected by the
platform SW.
INSTRUCTIONS
Replace the alarming unit.
FAULT NAME
SW fallback
FAULT ID
4082: EfaultId_FallbackDueToMaxResetLoopCounterValueAl
4083: EFaultId_FallbackDueToConfigurationDataMigrationFailureAl
4085: EfaultId_FallbackDueToTransportRequestAl
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MEANING
4082:
Source unit reached maximum number of reset retries i.e source unit cannot finish successfully start-up
after SW update.
4083:
Source unit requests SW fallback due to critical problem which occurred in start-up after
SW update i.e. configuration data migration failure.
4085:
Transport SW on source unit indicates need for software fallback.
INSTRUCTIONS
In case BTS is not automatically updated by NetAct and SW versions are inconsistent:
Update SW to the BTS with SW version running on BTS before SW update causing SW
fallback.
FAULT NAME
Starting temperature below minimum
FAULT ID
1827: EFaultId_StartTempBelowMinAl
MEANING
The temperature measured from sensor specified in "Temp.Cold.Start.Sensor" (=
FSP)is less than "Temp.Cold.Start.Limit"
The BTS cannot start properly, because the FSPs cannot be powered up at too cold
conditions.
INSTRUCTIONS
1. Wait until the the module is automatically heated to the required start-up temperature.
2. If the fault has been active for more than 2 hours, check the environmental conditions
of the site.
FAULT NAME
Summing service default initialization failed
FAULT ID
4092: EFaultId_MurkkuDefaultInitFailedAl
MEANING
C2 General
Summing service default configuration has failed.
INSTRUCTIONS
1. Reset the System Module.
2. If a reset does not resolve the fault situation, replace the System Module.
FAULT NAME
Summing service release from reset failed
FAULT ID
4081: EFaultId_MurkkuReleaseFromResetFailedAl
MEANING
Summing service release from reset failed.
INSTRUCTIONS
1. Reset the System Module.
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2. If a reset does not resolve the fault situation, replace the System Module.
FAULT NAME
Synchronization error in RP1 receiver
FAULT ID
2048: EFaultId_Casa2Rp1CrcAl
2049: EFaultId_Casa2Rp1FramePhaseAl
MEANING
The frame alignment is lost or the frame burst has a CRC error when the
System Module is working as a synchronization slave system module.
INSTRUCTIONS
1. Check the RP3-01 cable between the synchronization master and synchronization
slave system modules.
2. Check alarms in the synchronization master system module and act accordingly.
3. Reset the synchronization master system module.
FAULT NAME
System Module failure
FAULT ID
3000: EFaultId_SystemModuleFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the internal functionality
of the System Module.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS
1. Reset the System Module.
2. Replace the System Module.
FAULT NAME
Temperature alarm
FAULT ID
3040: EFaultId_TemperatureAlarm
MEANING
The internal temperature of the RF Module or System Module exceeds the threshold
C2 General
value, or the ambient temperature of the module(s) is outside the specified limits.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
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FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Unit SW download failed
FAULT ID
6: EFaultId_SwDownloadAl
MEANING
Software update to the module or submodule has failed.
INSTRUCTIONS
FlexiBTS
1. Download the BTS SW again.
2. Reset (block/unblock) the BTS.
3. If Step 2 does not help, replace the alarming module.
FAULT NAME
Unit initialization failure
FAULT ID
12: EFaultId_TcomConfigAl
4040: EFaultId_InitFaultManAl
MEANING
A module initialization has failed.
INSTRUCTIONS
C2 General
FlexiBTS:
1. Block/unblock the alarming module.
2. If FSP is the fault source, FSP reset recovery. If FCM/FCT is the fault source, system
module reset recovery. If that does not help, perform a power-off reset.
3. If Step 1 and 2 does not help, replace the alarming module.
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FAULT NAME
Unit not supported by current BTS SW version
FAULT ID
95: EFaultId_NotSupportedUnit
MEANING
An unsupported unit was found in the System Module. Typically this happens when a
new unit version is installed and there is an older System Module SW in use that does
not support the new unit version.
INSTRUCTIONS
FlexiBTS:
1. Upgrade the system module SW.
2. Replace the unit.
FAULT NAME
Unit synchronization failed
FAULT ID
16: EFaultId_SynchronizationAl
MEANING
FlexiBTS: FCM/FSP synchronisation has failed.
INSTRUCTIONS
FlexiBTS:
1. Block/unblock the alarming module.
2. Replace the alarming module.
FAULT NAME
Unknown HW resource
FAULT ID
94: EFaultId_UnknownUnitType
MEANING
A unit cannot be identified by its product code or by its physical device address (object
ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming unit/module.
FAULT NAME
Unknown product code
FAULT ID
93: EFaultId_UnknownProductCode
MEANING
A module cannot be identified by its product code but is known by its physical device
address (object_ID).
INSTRUCTIONS
C2 General
FlexiBTS: Replace the alarming module.
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FAULT NAME
Validation of signed file failed
FAULT ID
4145: EFaultId_SignatureValidationFailedAl
MEANING
SW file validation against its signature failed.
INSTRUCTIONS
Trigger SW update for BTS to the requested SW version.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Flexi Multiradio BTS LTE Alarms
7651 BASE STATION OPERATION DEGRADED
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Major
Meaning
A major fault (or faults) has occurred in the base station.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
C2 General
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see the
source of the alarm and instructions fields of the corresponding alarms).
Below is the list of BTS fault(s) which might have caused this alarm in BTS LN4.0
release. In case of earlier SW release and in case you need more detailed fault descriptions refer to LTE
System Libraries. The BTS fault descriptions are also included in BTS
SW release documentation. If that does not help, contact your local Nokia Siemens
Networks representative.
FAULT NAME
2M external reference missing
FAULT ID
1899: EFaultId_2MExtRefMissAl
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MEANING
The reference clock monitoring has detected a loss of 2.048MHz signal received from
an external reference source, connected to Sync In interface of the System Module.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the alarm disappears.
1. Check the cabling (connected to Sync In interface).
2. Check if the 2.048MHz reference source is working normally and the 2.048MHz signal
is available.
3. Replace the alarming module.
FAULT NAME
Address mismatch in summing
FAULT ID
2019: EFaultId_Muksu_SsubMmAl
MEANING
There is a baseband bus address mismatch in the summing. There are two possible
causes:
1. A configuration error (two different baseband units functioning) - after an acknowledgement the fault
returns.
2. Data corruption on the bus - appears once when unsynchronized data is sent by the
baseband.
INSTRUCTIONS
Check the antenna mapping to the local cells in the commissioning file.
FAULT NAME
Antenna link is down
C2 General
FAULT ID
476: EFaultId_Rp3BusError
MEANING
Antenna (RP3) link is down: transmitter or receiver drops from synchronization.
INSTRUCTIONS
FlexiBTS:
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1. If the alarming module is the System Module (FSM1), restart BTS.
2. If that does not help, replace the alarming FSM.
FAULT NAME
BB bus reception error (summing device)
FAULT ID
2016: EFaultId_Muksu_SMTimeOffAl
MEANING
The master frame in the received baseband bus frame is not in the correct place related
to the internally generated master frame pulse. Either the frame has been set into the
wrong place (PI delay) or the data itself is in the wrong place.
INSTRUCTIONS
1. Check the cables between the System Module and the connected module.
2. Replace the unit that causes the alarm (System Module).
FAULT NAME
BTS Master Clock tuning failure
FAULT ID
1818: EFaultId_Ov_OscAl
MEANING
The OCXO adjustment area is reaching its limit value. The DAC word value of the OCXO
is lower than 205 or greater than 3891 (5% of the total adjustment area). The range for
the DAC word is 0 - 4095.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Check the other alarms of the BTS and FTM and act accordingly.
2. If there are no other synchronization-related alarms active, start the fast tuning with
BTS Site Manager.
3. Reset the site. Run fast tuning again.
4. Check the reference signal accuracy by measuring it with a frequency counter (note:
requires a good timebase for the counter). The reference signal can be found from the
Sync Out interface of the Flexi System Module, the required accuracy is +/-0.015ppm.
If the reference accuracy is correct, run fast tuning.
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5. If that does not help, replace the system module.
FAULT NAME
BTS SW download or activation failed
FAULT ID
29: EFaultId_FileCorruptionAl
30: EFaultId_SwUpdateAl
MEANING
The SW update to the BTS has failed. The error can be caused by a module reset during
the SW update, a hardware problem in the module or a corrupted flash file system.
INSTRUCTIONS
FlexiBTS:
1. Retry the SW update.
2. If other flash memory-related faults are active for the alarming module at the same
time, replace the alarming module.
FAULT NAME
BTS configuration not supported
FAULT ID
4097: EFaultId_BtsConfNotSupportedAl
MEANING
FSP does not support requested BTS configuration.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Change BTS configuration.
2. Reset BTS.
FAULT NAME
BTS file error
FAULT ID
1802: EFaultId_FileRequestFlashAl
MEANING
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BPF file or optical interface FPGA file is invalid or missing. The FSP MCU SW file is
invalid or missing.
INSTRUCTIONS
Note: Perform the following steps in the listed order until the fault disappears:
1. Use BTS Site Manager to perform a full commissioning to the BTS by using the
C2 General
NetAct backup upload SCF file as template.
2. Download two different software packages so that the faulty file is removed from the
BTS.
3. Download the software again.
4. Replace the System Module.
FAULT NAME
BTS internal SW management problem
FAULT ID
3090: EFaultId_BtsInternalSwManagementProblem
MEANING
A software update to a module or subassembly has failed, or a corrupted SW file has
been detected in the FLASH.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults. If the ROM disk is corrupted, change the alarming
module.
2. Reset the RF Module and/or System Module, depending on the BTS fault source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace the alarming module.
FAULT NAME
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BTS reference clock missing
FAULT ID
3080: EFaultId_BtsReferenceClockMissing
MEANING
This BTS fault indication is generated if the reference clock monitoring function of the
BTS does not receive the highest configured synchronization reference signal or if all
the synchronization reference signals are missing. The BTS fault is not generated if the
highest configured synchronization source is present, no matter what the lower level
source statuses are.
Background information:
There is a fixed synchronization priority list in the FlexiBTS:
-Priority 1: PPS (Pulse Per Second) signal connected to the Synchronization Input interface (Sync In) of
the System Module. Normally the PPS signal is generated by the GPS
receiver.
-Priority 2: external 2.048MHz signal connected to the Sync In interface.
-Priority 3: the reference signal coming from the integrated transmission unit (FTM).
Normally, all the FlexiBTS sources are not in use at the same time (it depends on the
network planning and BTS configuration). During the BTS start-up, the available
C2 General
sources are checked against the reference source list in the BTS commissioning file and
deviations regarding the missing highest priority source generate a fault. During runtime
operation, the BTS fault functionality runs autonomously - notices also added/vanished
sources which are missing from the commissioning file.
The source for the FTM (which is the priority 3 source for the FlexiBTS) can be TDM
interface signal (e.g. E1, T1...), physical layer Synchronous Ethernet (SyncE) signal or
application layer Timing over Packet (ToP) in which the timing information to BTS(s) is
generated by a ToP master. The FTM reference source priority selection is not fixed but
user-selectable. Furthermore, if a signal listed in the FTM references is not received, a
BASE STATION TRANSMISSION ALARM is reported.
INSTRUCTIONS
Depending on the installed and commissioned synchronization source(s) listed in
section "Meaning", see the commissioned synchronization option below and perform the
steps in the listed order until the BTS fault indication disappears.
GPS receiver (PPS source):
1. If there is a GPS receiver commissioned at the BTS site, note the following: If the GPS
receiver is not locked to any satellite, it turns off the PPS signal which is normally delivered to the BTS
(Sync In interface). The most common reason is that the GPS receiver
does not see any satellites because of poor antenna installation (poor sky visibility). For
this, the only permanent cure is to change the GPS antenna location. One indication of
a fairly poor sky visibility is that the BTS fault is activated/canceled every now and then.
2. There may be a malfunction in the GPS receiver. Perform a (remote) power reset for
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the GPS receiver.
3. There may be a malfunction in the BTS. Perform a BTS site reset.
4. The GPS cable and/or connectors may be damaged. Check the cable and the connectors.
5. There may be a HW fault in the GPS receiver. Check the operation and change the
HW, if needed.
External 2.048MHz signal:
1. If there is an external 2.048MHz signal source commissioned at the BTS site, check
the BTS faults of that device and act accordingly. If this does not help, check the cables.
Note that because the device type is not known, detailed instructions cannot be given refer to the
appropriate user manual of the device for further actions.
2. There may be a malfunction in the BTS. Perform a BTS site reset.
FTM reference (TDM, SyncE or ToP as source):
1. If there is an integrated transmission unit (FTM) commissioned at the BTS site, note
the following: The FTM unit operates so that if it is not locked to a synchronization
source, it turns off the clock reference signal which is normally delivered to the BTS
master clock. The synchronization source of the FTM (set by the FTM synchronization
priority setting) may be missing, causing the FTM's internal clock to drop to holdover
mode. In this case, the fault in the transmission NETWORK must be corrected (FTM
itself may be working fine).
2. Check the alarms of the FTM unit and act accordingly.
3. Check the synchronization settings of the FTM unit.
4. There may be a malfunction in the BTS. Perform a BTS site reset.
C2 General
5. There may be an equipment failure in the FTM unit. Check the operation and replace
the unit, if needed. Note: Normally the reason is not an equipment failure, but there may
be connection failures in the transmission or packet network, causing the FTM clock to
drop to holdover mode. Especially the BTS fault indication activity (frequent BTS fault
indication activations/cancels instead of a stable BTS fault indication state) points to the
instability of the transmission network, not to a failure in the unit.
If the previous steps do not help, there may be an equipment failure in the System
Module. Check the operation and if performing a BTS site reset does not help, replace
the System Module.
FAULT NAME
BTS reset required
FAULT ID
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4001: EFaultId_BtsResetNeededAl
MEANING
The BTS detected an RF Module that cannot be taken into use without a BTS reset. The
RF Module type differs from the previous one or the RF module was not present during
startup.
FSP overheat occured. FSP temeperature back to normal and BTS reset is needed to
take the card back to use.
BTS startup: No FSP units detected by the time RP3 configuration starts.
INSTRUCTIONS
Reset (block/unblock) the BTS.
FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
C2 General
FAULT NAME
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Baseband bus configuration of <x> was rejected
FAULT ID
1811: EFaultId_BbBus_ConfFailedAl
MEANING
The baseband bus related configuration of <x> was rejected by the HW SW, DSP or RF
SW.
INSTRUCTIONS
Replace the alarming module.
FAULT NAME
Boot configuration inconsistency detected
FAULT ID
4102: EFaultId_BootConfigurationInconsistencyAl
MEANING
During SW update it was detected that configurations of active and passive SW in HW
unit are same. Active and passive SW configuration are compared:
- before SW download,
- during SW activation before active and passive SW switch,
- during start-up.
INSTRUCTIONS
Replace the faulty unit.
FAULT NAME
Commissioning error: <x>
FAULT ID
3060: EFaultId_CommissioningError
MEANING
Some of the commissioning parameters are either missing or faulty, or there is a
mismatch between them.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the commissioning parameters with the BTS Site Manager Commissioning
Wizard.
2. Load the correct commissioning file to the BTS.
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FAULT NAME
Communication failure
FAULT ID
1806: EFaultId_CommunicationFailureAl
MEANING
Communication with an application failed. It has not replied to the message that has
been sent/resent to it.
INSTRUCTIONS
FlexiBTS:
1. Check that the unit/module is properly connected. If the unit/module LED does not
light up, the unit/module is faulty. Check the alarming unit/module.
2. Check the fault history.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
3. Check the Network management system alarms for the alarming local cell (LCR).
4. Recommission the BTS to ensure that all parameters are correctly configured.
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FAULT NAME
DSP overheated
FAULT ID
4101: EFaultId_DspOverheatingAl
MEANING
DSP overheating was detected during DSP initialization.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming FSP module.
FAULT NAME
FSP in resetting state
FAULT ID
C2 General
4068: EFaultId_FspResetAl
MEANING
FSP is undergoing a cold reset.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears:
FlexiBTS:
1. Reset the BTS.
2. Replace the faulty module/unit.
FAULT NAME
FSP overheating
FAULT ID
4077: EFaultId_FspOverheatingAl
MEANING
Temperature on FSP board exceeds critical threshold value.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming module.
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FAULT NAME
Failure in connection between BTS and iOMS or 3rd party tool
FAULT ID
6261: EFaultId_TraceConnectionFaultyAl
MEANING
Failure in Trace connection between BTS and iOMS or 3rd Party Tool.
INSTRUCTIONS
Check the connection with iOMS/3rd Party tool.
FAULT NAME
Failure in optical RP3 interface
FAULT ID
3030: EFaultId_FailureInOptical_Rp3Interface
MEANING
The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two
modules. The failure cannot be assigned to a specific module but
there are several possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module. Note that dirty optical
connectors may cause the signal level to drop too low.
3. Depending on the fault source, reset the RF Module and/or System Module by blocking/unblocking it.
4. Replace the alarming module's Small Form Factor Pluggable (SFP). Check also the
SFP in the other end and replace it, if needed.
C2 General
5. Replace the alarming RF Module.
6. If the System Module is the only alarming source or replacing the RF Module does
not clear the fault situation, replace the alarming System Module.
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FAULT NAME
Failure in replaceable baseband unit
FAULT ID
3003: EFaultId_FbiaFailureAl
MEANING
The BTS has detected an abnormal operation or a failure in the BTS replaceable
baseband unit.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault indication disappears.
1. Check the other active BTS faults and act accordingly.
2. Check if the plug-in type baseband unit is installed correctly.
3. Reset the alarming baseband unit.
4. Replace the alarming baseband unit.
FAULT NAME
Fatal OSE Error
FAULT ID
418: EFaultId_OseFatalErr
MEANING
The operating system (OSE) goes into the error handler with a fatal status. The cause
can be, for example, an out of memory situation.
If only one FSP in BTS generates this fault, there is malfunction in one of the FSP submodules. If all
FSPs generate this fault, there is malfunction in the FSM.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Reset the System Module.
2. Replace the System Module.
FAULT NAME
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Flash operation failure
FAULT ID
214: EFaultId_FlashWrAl
215: EFaultId_FlashRdAl
216: EFaultId_FlashEraseAl
217: EFaultId_FlashDrvAl
218: EFaultId_FlashDbChksumAl
MEANING
A flash memory operation failure. If this alarm continuously appears, the flash chip might
be broken.
INSTRUCTIONS
FlexiBTS:
1. Check the other active alarms. If the ROM disk is corrupted, change the alarming
module.
2. Block/unblock the alarming module. There are no recovery actions and because of
that the block/unblock can be tried once. If that does not help, replace the alarming
module.
FAULT NAME
Incompatible SW version detected
FAULT ID
23: EFaultId_IncompatibleSwVersionAl
24: EFaultId_ObsoleteSwVersionAl
MEANING
A new module with incompatible SW has probably been inserted in the BTS.
INSTRUCTIONS
Update compatible SW to the BTS (check the SW versions to see the active SW version,
and update the active SW version), unless it is automatically updated by NetAct.
FAULT NAME
Internal MTU configuration failure
FAULT ID
4025: EFaultId_MtuConfigurationFailureAl
MEANING
Internal Maximum Transfer Unit (MTU) configuration failed on FCM or FSP.
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INSTRUCTIONS
1. Reset the alarming System Module.
2. Replace the alarming System Module
FAULT NAME
Master unit has lost connection to the slave unit
FAULT ID
4019: EFaultId_KeepAliveStatusErrorAl
MEANING
C2 General
Connection to the DSP submodule has been lost or the submodule reports an error situation.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
FlexiBTS:
1. Reset the BTS.
2. Replace the faulty module.
FAULT NAME
No MME capacity assigned by Core Network
FAULT ID
6264: EFaultId_S1ZeroCapPlmns
MEANING
BTS has encountered few possibly misconfigured PLMNs which cannot be used by BTS
for accepting calls from new UEs selecting those PLMNs.
These PLMNs which are considered misconfigured by BTS are:
- currently configured at BTS for one or more cells
- served by one or more MMEs and hence currently broadcast by BTS's cells
but none of these PLMNs have serving MME(s) with relative capacity greater than zero.
Because of this reason BTS cannot select any of these MMEs for any new UEs attempting registration in
these PLMNs.
All previously registered UEs in these PLMNs remain unaffected.
INSTRUCTIONS
Check and ensure that the PLMNs that have been listed with this BTS fault and that
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have been configured at BTS for one or more cells have at least one MME serving them
and relative capacity of that MME is greater than zero.
FAULT NAME
No connection to unit
FAULT ID
10: EFaultId_NoConnectionToUnitAl
MEANING
The connection to a module that belongs to the BTS configuration has been lost.
INSTRUCTIONS
FlexiBTS:
1. Check that the module is properly connected. If the module LED does not light up, the
module is faulty. Check the alarming module.
2. Check the fault history.
FAULT NAME
Not able to synchronize baseband bus with <x>
FAULT ID
1815: EFaultId_BbBus_SyncFailedAl
MEANING
The baseband bus synchronization towards <x> failed.
C2 General
INSTRUCTIONS
FlexiBTS:
Change the faulty module.
FAULT NAME
POST test failed
FAULT ID
69: EFaultId_Post_test_failedAl
MEANING
The unit or module has been tested during the BTS power-on self test (POST) and a
failure has been detected.
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INSTRUCTIONS
FlexiBTS:
1. Block/unblock the alarming unit/module.
2. Remove/reinsert the alarming unit/module.
3. Replace the alarming unit/module.
FAULT NAME
PPS reference missing
FAULT ID
1898: EFaultId_PpsRefMissAl
MEANING
The reference clock monitoring has detected a loss of PPS signal in the reference
received from the GPS receiver.
INSTRUCTIONS
1. Check the GPS receiver installation.
2. Check the GPS receiver status.
3. Check the connection between the GPS receiver and FSM.
FAULT NAME
Parallel RP3-01 link length mismatch
FAULT ID
4072: EFaultId_ParallelLinkDifferenceTooLargeAl
MEANING
The parallel RP3-01 links towards one radio module have too large mutual length difference (more than
60 meters). The main link is considered as reference and the secondary link is compared to the main link.
INSTRUCTIONS
Replace parallel RP3-01 fiber links towards one radio module so that the maximum
mutual length difference between fibers is less than 60 meters.
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FAULT NAME
RP3-01 Link Conflict
FAULT ID
4039: EFaultId_Rp301LinkConflictAl
MEANING
FSM notices a shared radio module is connected to different OptIF connectors on peer
system modules.
INSTRUCTIONS
RP3-01 cabling from peer system modules to shared radio module is to be corrected.
FAULT NAME
Radio Master Conflict
FAULT ID
4038: EFaultId_RadioMasterConflictAl
MEANING
FSM should be the radio master for RFSW, but notices that RFSW already has another
radio master defined.
INSTRUCTIONS
Commissioning error. Only one System Module can be set as master for a particular
radio resource.
FAULT NAME
SRAM operation failure
FAULT ID
1875: EFaultId_SRAMRdAl
1876: EFaultId_SRAMWrAl
MEANING
The SRAM memory operation failure. If this fault appears continuously, the SRAM chip
may be broken.
INSTRUCTIONS
FlexiBTS:
1. Check the other active faults.
2. Replace the alarming module.
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FAULT NAME
SRIO chain configuration was rejected
FAULT ID
4015: EFaultId_Srio_ConfFailedAl
C2 General
MEANING
The baseband bus related SRIO configuration for Faraday core was rejected by the
platform SW.
INSTRUCTIONS
Replace the alarming unit.
FAULT NAME
SW fallback
FAULT ID
4082: EfaultId_FallbackDueToMaxResetLoopCounterValueAl
4083: EFaultId_FallbackDueToConfigurationDataMigrationFailureAl
4085: EfaultId_FallbackDueToTransportRequestAl
MEANING
4082:
Source unit reached maximum number of reset retries i.e source unit cannot finish successfully start-up
after SW update.
4083:
Source unit requests SW fallback due to critical problem which occurred in start-up after
SW update i.e. configuration data migration failure.
4085:
Transport SW on source unit indicates need for software fallback.
INSTRUCTIONS
In case BTS is not automatically updated by NetAct and SW versions are inconsistent:
Update SW to the BTS with SW version running on BTS before SW update causing SW
fallback.
FAULT NAME
System Module failure
FAULT ID
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3000: EFaultId_SystemModuleFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the internal functionality
of the System Module.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS
1. Reset the System Module.
2. Replace the System Module.
FAULT NAME
Temperature alarm
FAULT ID
3040: EFaultId_TemperatureAlarm
C2 General
MEANING
The internal temperature of the RF Module or System Module exceeds the threshold
value, or the ambient temperature of the module(s) is outside the specified limits.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
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MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Transmission clock missing
FAULT ID
1816: EFaultId_Trans_Clk_MsgAl
MEANING
The reference clock monitoring has detected a loss of signal in the reference received
from the FT.
INSTRUCTIONS
1. Check the Iub connection.
2. Check the FT (Flexi Transport SubModule) status.
3. Check the connection between the FT and FSM (Flexi System Module).
FAULT NAME
Transmission parameters missing
FAULT ID
C2 General
1825: EFaultId_PublicIPmissingAl
MEANING
A request to retrieve the public IP address information of the FCM/FCT from the FTM
fails.
INSTRUCTIONS
Commission the BTS site with correct IP addresses.
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FAULT NAME
Unit SW download failed
FAULT ID
6: EFaultId_SwDownloadAl
MEANING
Software update to the module or submodule has failed.
INSTRUCTIONS
FlexiBTS
1. Download the BTS SW again.
2. Reset (block/unblock) the BTS.
3. If Step 2 does not help, replace the alarming module.
FAULT NAME
Unit initialization failure
FAULT ID
12: EFaultId_TcomConfigAl
4040: EFaultId_InitFaultManAl
MEANING
A module initialization has failed.
INSTRUCTIONS
FlexiBTS:
1. Block/unblock the alarming module.
2. If FSP is the fault source, FSP reset recovery. If FCM/FCT is the fault source, system
module reset recovery. If that does not help, perform a power-off reset.
3. If Step 1 and 2 does not help, replace the alarming module.
FAULT NAME
Unit not supported by current BTS SW version
FAULT ID
95: EFaultId_NotSupportedUnit
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MEANING
An unsupported unit was found in the System Module. Typically this happens when a
new unit version is installed and there is an older System Module SW in use that does
not support the new unit version.
INSTRUCTIONS
FlexiBTS:
1. Upgrade the system module SW.
2. Replace the unit.
FAULT NAME
Unit synchronization failed
FAULT ID
16: EFaultId_SynchronizationAl
MEANING
FlexiBTS: FCM/FSP synchronisation has failed.
INSTRUCTIONS
FlexiBTS:
1. Block/unblock the alarming module.
2. Replace the alarming module.
FAULT NAME
Unknown HW resource
FAULT ID
94: EFaultId_UnknownUnitType
MEANING
A unit cannot be identified by its product code or by its physical device address (object
ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming unit/module.
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FAULT NAME
Unknown product code
FAULT ID
93: EFaultId_UnknownProductCode
MEANING
A module cannot be identified by its product code but is known by its physical device
address (object_ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming module.
Clearing
C2 General
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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7652 BASE STATION NOTIFICATION
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Minor
Meaning
A minor fault (or faults) has occurred in the base station.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see source
of the alarm and instructions fields of the corresponding alarms).
Below is the list of BTS faults which might have caused this alarm in BTS LN4.0 release.
In case of earlier SW release and in case you need more detailed fault descriptions refer
to LTE System Libraries. The BTS fault descriptions are also included in BTS SW
release documentation. If that does not help, contact your local Nokia Siemens
Networks representative.
FAULT NAME
# autonomous reset as recovery action
FAULT ID
52: EFaultId_UnitAutonomousResetAl
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MEANING
The BTS tries to correct a fault situation by performing a recovery reset to a unit, to the
site or to the BTS.
In case of RF module reset in RF chaining configuration BTS resets also all RF modules
which are further in chain.
INSTRUCTIONS
Check the fault history and other active faults of the unit.
Note! This fault does not require any (special) actions.
FAULT NAME
2M external reference missing
FAULT ID
1899: EFaultId_2MExtRefMissAl
MEANING
The reference clock monitoring has detected a loss of 2.048MHz signal received from
an external reference source, connected to Sync In interface of the System Module.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the alarm disappears.
1. Check the cabling (connected to Sync In interface).
2. Check if the 2.048MHz reference source is working normally and the 2.048MHz signal
is available.
3. Replace the alarming module.
FAULT NAME
Antenna Line Device Operation Failure
FAULT ID
1871: EFaultId_BusyAl
1872: EFaultId_FormatErrorAl
1873: EFaultId_UnsupportedProcedureAl
1874: EFaultId_OutOfRangeAl
MEANING
The device is not working properly, the configuration is not valid, or a given parameter
is incorrect.
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INSTRUCTIONS
1. Check the functionality of the antenna line device.
2. Check the compatibility between the antenna line device and the BTS.
C2 General
3. Check that the given parameters are in the valid range.
FAULT NAME
Antenna Line Device failure
FAULT ID
3100: EFaultId_AntennaLineFailure
MEANING
The System Module or the device itself has detected an abnormal operation or a failure
in the antenna line device.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the antenna line and antenna line devices. Make sure that the antenna line
connectors are in the right torque.
2. Reset the alarming RF module by blocking/unblocking it.
3. Replace the faulty parts and/or devices along the antenna line.
4. Replace the RF Module.
FAULT NAME
Antenna line device HW failure
FAULT ID
1847: EFaultId_HardwareErrorAl
MEANING
A hardware failure detected by an antenna line device. Usually, this is a permanent fault
(the hardware is broken).
INSTRUCTIONS
1. Block/unblock the Radio module to give a power-off reset to the antenna line devices.
2. If that does not help, replace the antenna line device.
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FAULT NAME
Antenna line device configuration failure
FAULT ID
1848: EFaultId_WorkingSoftwareMissingAl
1888: EFaultId_AlConfigurationFailureAl
MEANING
An antenna line or antenna line device is not properly configured.
INSTRUCTIONS
1. Update the proper SW to the device.
2. Check/correct the antenna line configuration.
3. If that does not help, replace the antenna line device.
FAULT NAME
BTS file error
FAULT ID
1802: EFaultId_FileRequestFlashAl
MEANING
C2 General
BPF file or optical interface FPGA file is invalid or missing. The FSP MCU SW file is
invalid or missing.
INSTRUCTIONS
Note: Perform the following steps in the listed order until the fault disappears:
1. Use BTS Site Manager to perform a full commissioning to the BTS by using the
NetAct backup upload SCF file as template.
2. Download two different software packages so that the faulty file is removed from the
BTS.
3. Download the software again.
4. Replace the System Module.
FAULT NAME
BTS internal SW management problem
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FAULT ID
3090: EFaultId_BtsInternalSwManagementProblem
MEANING
A software update to a module or subassembly has failed, or a corrupted SW file has
been detected in the FLASH.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults. If the ROM disk is corrupted, change the alarming
module.
2. Reset the RF Module and/or System Module, depending on the BTS fault source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace the alarming module.
FAULT NAME
BTS is uncommissioned
FAULT ID
4030: EFaultId_NoCommDataAl
MEANING
Commissioning file download has been started neither from BTS Site Manager, nor from
NetAct during autoconfiguration. Autoconfiguration might not be enabled in NetAct, the
license is missing or the commissioning file is not found.
INSTRUCTIONS
1. Check in NetAct that autoconfiguration is enabled and the required license and commissioning file are
available.
2. Check the autoconnection/autoconfiguration information with BTS Site Manager.
3. Load the correct commissioning file to the BTS.
C2 General
FAULT NAME
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BTS reference clock missing
FAULT ID
3080: EFaultId_BtsReferenceClockMissing
MEANING
This BTS fault indication is generated if the reference clock monitoring function of the
BTS does not receive the highest configured synchronization reference signal or if all
the synchronization reference signals are missing. The BTS fault is not generated if the
highest configured synchronization source is present, no matter what the lower level
source statuses are.
Background information:
There is a fixed synchronization priority list in the FlexiBTS:
-Priority 1: PPS (Pulse Per Second) signal connected to the Synchronization Input interface (Sync In) of
the System Module. Normally the PPS signal is generated by the GPS
receiver.
-Priority 2: external 2.048MHz signal connected to the Sync In interface.
-Priority 3: the reference signal coming from the integrated transmission unit (FTM).
Normally, all the FlexiBTS sources are not in use at the same time (it depends on the
network planning and BTS configuration). During the BTS start-up, the available
sources are checked against the reference source list in the BTS commissioning file and
deviations regarding the missing highest priority source generate a fault. During runtime
operation, the BTS fault functionality runs autonomously - notices also added/vanished
sources which are missing from the commissioning file.
The source for the FTM (which is the priority 3 source for the FlexiBTS) can be TDM
interface signal (e.g. E1, T1...), physical layer Synchronous Ethernet (SyncE) signal or
application layer Timing over Packet (ToP) in which the timing information to BTS(s) is
generated by a ToP master. The FTM reference source priority selection is not fixed but
user-selectable. Furthermore, if a signal listed in the FTM references is not received, a
BASE STATION TRANSMISSION ALARM is reported.
INSTRUCTIONS
Depending on the installed and commissioned synchronization source(s) listed in
section "Meaning", see the commissioned synchronization option below and perform the
steps in the listed order until the BTS fault indication disappears.
GPS receiver (PPS source):
1. If there is a GPS receiver commissioned at the BTS site, note the following: If the GPS
receiver is not locked to any satellite, it turns off the PPS signal which is normally delivered to the BTS
(Sync In interface). The most common reason is that the GPS receiver
does not see any satellites because of poor antenna installation (poor sky visibility). For
this, the only permanent cure is to change the GPS antenna location. One indication of
a fairly poor sky visibility is that the BTS fault is activated/canceled every now and then.
2. There may be a malfunction in the GPS receiver. Perform a (remote) power reset for
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the GPS receiver.
3. There may be a malfunction in the BTS. Perform a BTS site reset.
4. The GPS cable and/or connectors may be damaged. Check the cable and the connectors.
5. There may be a HW fault in the GPS receiver. Check the operation and change the
HW, if needed.
External 2.048MHz signal:
1. If there is an external 2.048MHz signal source commissioned at the BTS site, check
the BTS faults of that device and act accordingly. If this does not help, check the cables.
Note that because the device type is not known, detailed instructions cannot be given refer to the
appropriate user manual of the device for further actions.
2. There may be a malfunction in the BTS. Perform a BTS site reset.
FTM reference (TDM, SyncE or ToP as source):
1. If there is an integrated transmission unit (FTM) commissioned at the BTS site, note
the following: The FTM unit operates so that if it is not locked to a synchronization
source, it turns off the clock reference signal which is normally delivered to the BTS
master clock. The synchronization source of the FTM (set by the FTM synchronization
priority setting) may be missing, causing the FTM's internal clock to drop to holdover
mode. In this case, the fault in the transmission NETWORK must be corrected (FTM
itself may be working fine).
2. Check the alarms of the FTM unit and act accordingly.
3. Check the synchronization settings of the FTM unit.
4. There may be a malfunction in the BTS. Perform a BTS site reset.
5. There may be an equipment failure in the FTM unit. Check the operation and replace
the unit, if needed. Note: Normally the reason is not an equipment failure, but there may
be connection failures in the transmission or packet network, causing the FTM clock to
drop to holdover mode. Especially the BTS fault indication activity (frequent BTS fault
indication activations/cancels instead of a stable BTS fault indication state) points to the
instability of the transmission network, not to a failure in the unit.
If the previous steps do not help, there may be an equipment failure in the System
Module. Check the operation and if performing a BTS site reset does not help, replace
the System Module.
FAULT NAME
BTS reset time increased
FAULT ID
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4091: EFaultId_BtsResetTimeIncreasedAl
MEANING
BTS has detected RF module power cycle failure and is trying to recover from the failure
during BTS reset procedure.
BTS reset will last longer due to additional actions performed by BTS to recover from
faulty situation.
INSTRUCTIONS
None
FAULT NAME
BTS time not corrected
FAULT ID
26: EFaultId_NtpTimeNotSetAl
MEANING
The SNTP time cannot be fetched from the transport system (FTM) within the time limit.
INSTRUCTIONS
1. Check the NTP setting.
2. Check the stratum parameter on the NTP server.
FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
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a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
FAULT NAME
Commissioning error: <x>
FAULT ID
3060: EFaultId_CommissioningError
MEANING
C2 General
Some of the commissioning parameters are either missing or faulty, or there is a
mismatch between them.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the commissioning parameters with the BTS Site Manager Commissioning
Wizard.
2. Load the correct commissioning file to the BTS.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
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3. Check the Network management system alarms for the alarming local cell (LCR).
4. Recommission the BTS to ensure that all parameters are correctly configured.
FAULT NAME
Cooling fan broken
FAULT ID
1933: EFaultId_FrFanBroken
MEANING
Fan(s) are not running.
INSTRUCTIONS
1. Check if the fan connector is properly mounted.
2. If that does not help, replace the fan module.
FAULT NAME
Cooling fan broken
FAULT ID
4078: EFaultId_FanBrokenAl
MEANING
Fan(s) are not running although the control is higher than 0.
INSTRUCTIONS
1. Check that the fan is not blocked.
2. Check that the fan connector is properly mounted.
3. If that does not help, replace the fan.
C2 General
FAULT NAME
Cooling fan has reduced from the set speed
FAULT ID
1934: EFaultId_FrFanReducedSetSpeed
MEANING
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Fan(s) are rotating slower than requested.
INSTRUCTIONS
1. Check if the fan connector is properly mounted.
2. If that does not help, replace the fan module.
FAULT NAME
Cooling fan is over speeding
FAULT ID
4080: EFaultId_FanOverSpeedAl
MEANING
Fan(s) are running faster than requested.
INSTRUCTIONS
Replace the fan(s).
FAULT NAME
Cooling fan is over speeding
FAULT ID
1935: EFaultId_FrFanOverSpeed
MEANING
Fan(s) rotate faster than requested.
INSTRUCTIONS
Replace the fan module.
FAULT NAME
Cooling fan speed decreased
FAULT ID
4079: EFaultId_CoolingFanSpeedDecreasedAl
MEANING
Fan(s) speed is deviating too much from the requested control.
INSTRUCTIONS
1. Check if the fan is not blocked.
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2. Check if the fan connector is properly mounted.
3. If that does not help, replace the fan.
FAULT NAME
Critical bit toggling error
FAULT ID
6701: EFaultId_CriticalBitTogglingError
MEANING
Non correctable bit toggling error is detected in the critical DSP memory.
INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears.
1. Reset the System Module.
2. Replace the System Module.
FAULT NAME
DC voltage administratively disabled
FAULT ID
4141: EFaultId_DcVoltageAdministrativelyDisabledAl
MEANING
Feeding voltage is disabled for selected Antenna Line.
INSTRUCTIONS
In order to revert changes, DC Voltage should be enabled for reporting Antenna Line.
FAULT NAME
Difference between BTS master clock and reference frequency
FAULT ID
9: EFaultId_DacWordChangeAl
MEANING
The reference frequency that the BTS master clock receives has changed by about 0.2
ppm or more (which equals the change magnitude of 204 DAC steps or more) during
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the measurement period, compared to the BTS master clock frequency.
The cause of the alarm can be:
1. The reference frequency has changed due to a fault in the transmission network synchronization
(which in turn is caused by an equipment fault or a setting error). Note that
if the network synchronization malfunction lasts for a long time, the alarm is canceled
when the BTS frequency reaches the faulty reference synchronization. The alarm can
also be activated if the faulty reference synchronization is corrected and there is again
the difference of 0.2 ppm or more. The alarm is canceled whenever the difference
becomes smaller than 0.2 ppm.
C2 General
2. The reference frequency fluctuates continuously due to a great deal of jitter/wander
in the transmission network. The alarm is continuously activated/canceled (however, the
alarming state may predominate). There is always some jitter/wander in the transmission network; the
limits are defined in ITU-T G.823/824/825.
3. If the BTS integrated transport part receives the synchronization information via the
2.048 MHz synchronization input (external clock source), the alarm situation may be
caused by a fault of that signal. In that case, the alarm behavior notifications listed 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, not the most
common reason. Normally the reason can be found in the Iub/reference signal behavior
(see the descriptions above).
INSTRUCTIONS
Because there are several possibilities for the alarm activation, a BTS Clock Frequency
History feature has been developed. You can access the stored history data via BTS
Site Manager. You can use the history data as a tool for finding out the reason for the
fault/alarm situation (for further instructions about the history feature, see the online help
of BTS Site Manager). Depending on the possible reason, follow the instructions below:
1. In case of a fault in the transmission network synchronization, you must correct the
network synchronization. The long-term accuracy of the Iub signal must be 0.015 ppm
or better (check the correct Iub accuracy by measuring it). No actions on the BTS are
necessarily needed.
2. If the basic accuracy of the Iub signal is in order but there is too much instability, that
is, the jitter/wander is outside the acceptable limits, you must correct the synchronization
of the transmission network. The limits for the jitter/wander are defined in the ITU-T
G.823/824/825. No actions on the BTS are needed.
3. In case of a BTS equipment fault, the location may be:
Transport part:
- First check the alarms of the TRS with BTS Site Manager and act accordingly.
- If there are no alarms, check the TRS synchronization settings.
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FCM unit:
- If the TDM reference signal accuracy and the TRS are in order but the FCM unit is still
alarming, run the fast tuning with BTS Site Manager.
- If the alarm is still active after the fast tuning is finished, reset
the site. If the problem does not disappear in a few minutes, reset the site.
- If that does not help, replace the FCM unit.
Note that if the reason is in the transmission network synchronization, replacing the
faulty unit does not correct the situation. Furthermore, the alarm activity (frequent
alarms/cancels) points to an instability in the transmission
network, not to a fault in the unit.
4. After the fault situation has been cleared, you might need to tune the BTS master
clock because the BTS master clock adjustment is quite slow. You can perform the
tuning:
- manually by changing the DAC word (during a site visit)
C2 General
- or with fast tuning, in which the BTS master clock is tuned in a few minutes automatically near the Iub
reference (normal tuning takes care of the fine tuning).
Note, however, that you should only use the fast tuning in case the Iub reference signal
is known to be a good one. Otherwise the BTS frequency may be tuned into a totally
incorrect value, causing serious problems in the network performance.
Background information: The principle is that in the mobile network, the synchronization
goes from S1 interface. But in reality that chain might be broken somewhere and, for
example, when using leased lines, the BTS may take the reference synchronization
from the transmission network of another operator. This does not harm the system if the
synchronization of the leased line service provider is also accurate/stabile enough. The
BTS uses the incoming synchronization signal as a reference for the Air interface, the
accuracy requirement of which is set by 3GPP.
FAULT NAME
Error in file server during file download type <fileTypeNumber>
FAULT ID
27: EFaultId_FileServerAl
MEANING
The BTS is unable to obtain a file from the file server (error in FTP open or FTP get).
The file server is down, the file is missing, or the path is incorrect. A possible error in the
DCN and Iub, or a user administration error (an invalid username or password, or the
user does not have access rights for the files).
<fileTypeNumber> included in fault name is a variable parameter identifying the type of
file for which download failure has been reported.
INSTRUCTIONS
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1.Check the file type according to the table below:
<fileTypeNumber> - <fileType>
1 - hwConfigurationFile
2 - configurationPlanFile
3 - logFile
4 - swFile
5 - licFile
6 - measurementFile
7 - rnwConfigurationPlanFile
11 - combinedSiteConfigurationPlanFile
12 - allConfigurationPlanFile
14 - testResultFile
15 - autoConfReport
17 - measurementPlanFile
18 - rnwMetadataFile
19 - topologyFile
22 - togglingParFile
23 - troubleShootingData
2. Retry the file update a few times.
C2 General
3. Check the FTP account user settings.
4. Check the file and path names.
5. Check the administration log on the file server.
FAULT NAME
Failure in optical RP3 interface
FAULT ID
3030: EFaultId_FailureInOptical_Rp3Interface
MEANING
The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two
modules. The failure cannot be assigned to a specific module but
there are several possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module. Note that dirty optical
connectors may cause the signal level to drop too low.
3. Depending on the fault source, reset the RF Module and/or System Module by block88
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ing/unblocking it.
4. Replace the alarming module's Small Form Factor Pluggable (SFP). Check also the
SFP in the other end and replace it, if needed.
5. Replace the alarming RF Module.
6. If the System Module is the only alarming source or replacing the RF Module does
not clear the fault situation, replace the alarming System Module.
FAULT NAME
Failure in trace session
FAULT ID
6263: EFaultId_TraceSessionAl
MEANING
Failure has occurred during activation/deactivation of Trace Session (Subscriber trace
or Cell trace or Interface trace session).
In case of Subscriber trace, the possible reasons are:
- Subscriber Trace feature has not been enabled at the BTS.
- Id used for the subscriber trace session is already in use for another active subscriber
trace session.
- Count of subscriber trace sessions at the BTS has reached the maximum number of
subscriber trace sessions supported by the BTS (which is 60).
- Handover at BTS is ongoing for the UE to be traced
In case of Cell/Interface trace, the possible reasons are:
- Cell Trace feature has not been enabled at the BTS.
- Id used for the cell/interface trace session is already in use for another active cell/interface trace
session.
- Count of cell and interface trace sessions at the BTS has reached the maximum
C2 General
number of cell and interface trace sessions supported by the BTS (which is 12).
INSTRUCTIONS
For failure in Subscriber trace session activation/deactivation, based on the error cause
provided as part of the additional info for the alarm raised, following needs to be done:
- "Subscriber & Equipment Trace feature not enabled": Enable the subscriber trace
feature at BTS. Any events corresponding to the failed subscriber trace and any other
subscriber traces started later, which need to be recorded, will be recorded at BTS after
the feature has been enabled.
- "trace reference in use, trace cannot be started": This problem is out of scope to be
fixed at BTS and is scope of NMS(Network Management System) used to activate the
subscriber trace. The error means that there is already an active subscriber trace at BTS
using the same Trace Reference Number. Possible solution is to try deactivating all subscriber traces and
activating them again.
- "max number of UE trace session reached, trace cannot be started": This problem is
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out of scope to be fixed at BTS and is scope of NMS(Network Management System)
used for subscriber trace activation. This error indicates that already 60 active subscriber trace sessions
(which is the maximum number of active subscriber traces supported at BTS at any point in time) has
already been reached at BTS. Try to stop an
already active subscriber trace session at NMS before activating any new subscriber
trace(s).
- "Trace session cannot be started due to ongoing handover for the UE" OR "Trace
session cannot be stopped due to ongoing handover for the UE": This problem is out of
scope to be fixed at BTS. This problem is transient. Possible solution is to retry activation
of the failed subscriber trace at NMS.
For failure in Cell/Interface trace session activation/deactivation, based on the error
cause provided as part of the additional info for the alarm raised, following needs to be
done:
- "Cell trace feature is not enabled": Enable the cell trace feature at BTS. Then try to
activate again the required cell/interface trace session(s). The feature flag used for activating cell trace
and interface trace is the same.
- "trace reference in use, trace cannot be started": This problem is out of scope to be
fixed at BTS and is scope of NMS(Network Management System) used to activate the
cell/interface trace. The error means that there is already an active cell/interface trace
at BTS using the same Trace Reference Number. Possible solution is to try deactivating
all cell and interfaces traces. Then try activating them again.
- "max number of cell/interface trace sessions reached, trace cannot be started": This
problem is out of scope to be fixed at BTS and is scope of NMS(Network Management
System) used for cell/interface trace activation. This error indicates that already 12
active cell/interface trace sessions (which is the maximum number of active cell and
interface trace sessions put together supported at BTS at any point in time) has already
been reached at BTS. Try to stop an already active cell/interface trace session at NMS
before activating any new cell/interface trace(s).
FAULT NAME
C2 General
Fan failure
FAULT ID
3050: EFaultId_FanFailure
MEANING
A fan, all the fans or more than one fan in the same fan group are rotating slower than
requested, are not rotating at all, or the RPM information is not available for the fans.
The reason for this fault can be a broken fan.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the fan and cabling.
2. Replace the faulty fan module.
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FAULT NAME
Fan module faulty: <X>
FAULT ID
1: EFaultId_FanPowerAl
MEANING
All the fans or more than one fan in the same fan group are rotating more slowly than
requested.
INSTRUCTIONS
1. Check the fans and connector.
2. Replace the fan module.
FAULT NAME
Fan module operation degraded: <X>
FAULT ID
0: EFaultId_ChangeFanAl
MEANING
A fan is not rotating or is rotating more slowly than at the requested speed, or the RPM
information is not available for the fan.
INSTRUCTIONS
1. Check the fan and connector.
2. Replace the fan module.
FAULT NAME
Fan vendor not detected
FAULT ID
4073: EFaultId_FanVendorNotDetectedAl
MEANING
Fan speed is too low for succesful detection. Detection attempt takes place again after
the fan test timer expires.
INSTRUCTIONS
1. Check the fan and connector.
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2. Replace the fan.
FAULT NAME
File corrupted in SW download
FAULT ID
28: EFaultId_SwPackageAl
MEANING
The SW being downloaded is corrupted or incorrectly formed.
INSTRUCTIONS
1. Retry the SW update.
2. Save the snapshot and check the download status from the BTS SWDLreport in the
snapshot file.
FAULT NAME
Filter unit operation failed
FAULT ID
1840: EFaultId_TuningFailureAl
1841: EFaultId_UnitFaultyAl
4043: EFaultId_TuningFrequencyOutOfRangeAl
MEANING
A filter has not been able to tune on an appropriate sub-band properly (tuning failure),
or another major failure has been detected by the filter (unit faulty).
INSTRUCTIONS
In case of 4043:EFaultId_TuningFrequencyOutOfRangeAl: reconfigure the frequency
settings.
In case of 1840:EFaultId_TuningFailureAl, 1841:EFaultId_UnitFaultyAl: replace the
filter unit.
FAULT NAME
GPS Receiver alarm: EEPROM invalid
FAULT ID
4126: EFaultId_GpsReceiverEepromInvalidAl
MEANING
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GPS receiver has detected that one or more EEPROM segments were found to be corrupted at reset and
C2 General
had to be set to their factory default settings.
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
EEPROM invalid:
1. The GPS receiver has detected a malfunction in the EEPROM memory of the GPS
receiver. Perform a (remote) power reset for the GPS receiver.
2. There might be a HW fault in the GPS receiver. Check the operation and change the
GPS module, if needed.
FAULT NAME
GPS Receiver alarm: control interface not available
FAULT ID
4011: EFaultId_GPSSystemElementAl
MEANING
BTS has detected communication problem with the GPS receiver
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
Control Interface not available:
1. The BTS has detected a malfunction in the control interface of the GPS receiver.
Possible reason could be that BTS and GPS receiver does not support common interface. Otherwise
perform a (remote) power reset for the GPS receiver.
2. Perform a (remote) BTS site reset for the whole BTS.
3. Perform a power reset for the whole BTS.
4. The cable between the GPS receiver and the BTS might work improperly. Check the
pins of the connectors (both ends of the cable) are free from oxide and other kind of dirt,
meaning that the pin connection quality is good.
5. The cable between the GPS receiver and the BTS might be faulty. Check the situation
and change the cable, if needed.
6. There might be a HW fault in the GPS receiver. Check the operation and change the
GPS module, if needed.
7. There might be a HW fault in the BTS System Module. Check the operation and
change the System Module, if needed.
FAULT NAME
GPS Receiver alarm: no stored position
FAULT ID
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4124: EFaultId_GpsReceiverNoStoredPositionAl
MEANING
There is no accurate position stored in EEPROM.
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
No stored position:
1. One of the GPS receiver settings is incorrect. Using the manager SW of the GPS
receiver, set the receiver to store the position into non-volatile memory.
C2 General
If there is no tick mark in the position storage selection, the GPS receiver runs the
site/self survey every time the GPS receiver is reseted (either by manager command,
by power outage or by a GPS recovery reset). This means that if the GPS receiver installation quality is
only an average - and especially if the installation is a poor one - the GPS
receiver turns the PPS reference OFF every now and then during the site survey. This
means the BTS master clock drops to holdover mode much easier during the survey
than during the normal operation.
FAULT NAME
GPS Receiver alarm: not tracking satellites
FAULT ID
4122: EFaultId_GpsReceiverNotTrackingSatellitesAl
MEANING
Poor GPS antenna installation
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
Not tracking satellites:
1. Absolutely the most common reason for this fault indication is that the GPS antenna
installation has not been done properly, that is the sky visibility is not good enough.
Refer the documentation for installations and if there are deviations with the actual
installation, re-install the GPS antenna. Note that even when the GPS antenna has a
good sky visibility, the problem might be caused by installing the GPS antenna too close
to the transmitter antenna(s) of the BTS, causing disturbancies for the GPS receiver.
2. There might be a malfunction in the GPS receiver. Perform a (remote) power reset for
the GPS receiver.
3. There might be a HW fault in the GPS receiver. Check the operation and change the
GPS module, if needed.
FAULT NAME
GPS Receiver alarm: position questionable
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FAULT ID
4125: EFaultId_GpsReceiverPositionQuestionableAl
MEANING
The receiver is used in stored position but has been moved to a new position after that.
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
Position questionable:
1. The GPS receiver has valid position data but it is not properly in line with the information estimated
from the actual satellite visibility. The reason for this fault indication might
be that the GPS antenna installation has not been done properly, that is the sky visibility
is not good enough. Refer the documentation for instructions and if there are deviations
with the actual installation, re-install the GPS antenna. Note that even when the GPS
antenna has good sky visibility, the problem might be caused by installing the GPS
antenna too close to the transmitter antenna(s) of the BTS, causing disturbancies for the
C2 General
GPS receiver.
2. There might be a malfunction in the GPS receiver. Perform a (remote) power reset for
the GPS receiver.
3. There might be a HW fault in the GPS receiver. Check the operation and change the
GPS module, if needed.
FAULT NAME
GPS Receiver alarm: survey in progress
FAULT ID
4123: EFaultId_GpsReceiverSurveyInProgressAl
MEANING
The GPS receiver is running a site/self survey
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears.
Survey in progress:
1. Do nothing. The alarm is informative only. Normally the GPS receiver runs the survey
for two reasons: a) somebody has started the survey manually, b) the GPS receiver has
noticed that the position has changed and the receiver has started an automatic survey.
Please notice also that automatic survey takes place every time during first start-up.
2. If the automatic survey takes place every now and then, it might be an indication that
the sky visibility is poor and according to the poorly tracked satellites, the GPS receiver
concludes that the position has changed. In this case, check the activity of the other
faults (BTS fault history data) and if found feasible, make re-installation of the GPS
antenna.
3. If the GPS installation is good but still the automatic survey takes place every now and
then, there might be a malfunction in the GPS receiver. Perform a (remote) power reset
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for the GPS receiver.
4. If the actions detailed in previous steps do not correct the situation, there might be a
HW fault in the GPS receiver. Check the operation and change the GPS module, if
needed.
FAULT NAME
Heating element not working
FAULT ID
1860: EFaultId_HeatingMatNotWorkingAl
MEANING
The heater control connection of the FSM is faulty, there is no heater or the heater is
faulty.
INSTRUCTIONS
1. Check whether the heating element exists at all.
2. Check the heater control connection and that the heater is working.
3. Replace the alarming component.
FAULT NAME
C2 General
IP Address Conflict
FAULT ID
4144: EFaultId_IpAddressConflict
MEANING
IP address conflict detected between RP3-01 nodes.
INSTRUCTIONS
Wait until autonomous SW update procedure has been executed for all conflicting RP301 nodes. Note
that in case of chained radio modules, the SW update in this particular
case can only be done one-by-one along the RF chain. Depending on the conditions this
may take time from minutes to over an hour.
In case the IP conflict situation is not solved, check the conflicting RP3-01 node on the
site and ensure the SW update procedure has been properly executed.
FAULT NAME
Incoherency in cell configuration
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FAULT ID
4000: EFaultId_IncoherencyInConfiguration
MEANING
Too many LCRs are commissioned to one RF Module.
INSTRUCTIONS
Recommission the BTS with a correct number of LCRs per RF Module.
FAULT NAME
Invalid Configuration file
FAULT ID
4036: EFaultId_InvalidConfigurationFileAl
MEANING
The commissioning file is missing, or an incorrect SCF file has been detected during
BTS startup as follows:
a) Commissioning data: the commissioning file is missing or a parameter has a missing
or incorrect value.
b) RNW data: "RNW not found", "RNW has wrong format", "RNW could not be parsed",
"RNW has wrong schema", "Validation failed due to incompatible data" or "no RNW cell
managedObject is created"
INSTRUCTIONS
1. Check and correct the contents of the commissioning file.
2. Recommission the BTS with the valid commissioning file.
FAULT NAME
Low noise amplifier failure
FAULT ID
1839: EFaultId_LNAFailureAl
MEANING
The Filter has detected a malfunction in the LNA unit.
C2 General
INSTRUCTIONS
Replace the alarming Radio module.
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FAULT NAME
MHA unit operation failure
FAULT ID
1869: EFaultId_MinorTMAFaultAl
1870: EFaultId_MajorTMAFaultAl
MEANING
A fault in the Masthead Amplifier (MHA) is detected. The fault reduces the gain performance or
completely prevents the MHA from functioning.
INSTRUCTIONS
Replace the alarming module.
FAULT NAME
Mast Head Amplifier fault
FAULT ID
3120: EFaultId_MastHeadAmplifierFault
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the Masthead Amplifier
(MHA).
Note that the Tower Mounted Amplifier (TMA) is a synonym for the MHA and is used by
the Antenna Interface Standards Group (AISG).
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the cables related to the Masthead Amplifier (MHA).
2. Reset the alarming MHA module by blocking/unblocking the RF Module which the
MHA is connected to.
3. Replace the faulty device(s).
FAULT NAME
Maximum number of neighbor eNBs/cells exceeded
FAULT ID
6265: EFaultId_MaximumNumberOfNeighbourEnbsOrCellsExceeded
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MEANING
This alarm indicates that the maximum number of LNADJ and/or LNADJL was
exceeded in eNB and that the new object was not stored.
INSTRUCTIONS
1.Check if maximum number of LNADJ was reached. If yes, check if there are LNADJ
objects that can be manually deleted. This makes space for new LNADJ information.
2.Check if maximum number of LNADJL was reached. If yes, check if there are LNADJL
objects related with LNADJ object that can be manually deleted. This makes space for
new LNADJ information.
FAULT NAME
No connection to unit
FAULT ID
10: EFaultId_NoConnectionToUnitAl
MEANING
The connection to a module that belongs to the BTS configuration has been lost.
INSTRUCTIONS
FlexiBTS:
1. Check that the module is properly connected. If the module LED does not light up, the
module is faulty. Check the alarming module.
2. Check the fault history.
FAULT NAME
No module fan detected
FAULT ID
1932: EFaultId_FrNoFansDetected
MEANING
Radio Module cannot identify the used fan type or the fan is not installed at all.
INSTRUCTIONS
1. Check that the fan connector is properly mounted.
2. If that does not help, replace the fan module.
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FAULT NAME
OIC MCU Buffer Full
FAULT ID
2011: EFaultId_OIC_MCUBFullAl
MEANING
The control message traffic between the modules is malfunctioning.
INSTRUCTIONS
Check the alarms for the connected module.
FAULT NAME
PPS reference missing
FAULT ID
C2 General
1898: EFaultId_PpsRefMissAl
MEANING
The reference clock monitoring has detected a loss of PPS signal in the reference
received from the GPS receiver.
INSTRUCTIONS
1. Check the GPS receiver installation.
2. Check the GPS receiver status.
3. Check the connection between the GPS receiver and FSM.
FAULT NAME
Peer system module connection lost
FAULT ID
4110: EFaultId_PeerSystemModuleConnectionLostAl
MEANING
The master system module has lost optical connection to the peer system module.
INSTRUCTIONS
Check the optical connection between master and peer system modules.
FAULT NAME
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RF Module failure
FAULT ID
3010: EFaultId_RfModuleFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the internal functionality
of the RF Module.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults (System Module failure, Baseband Bus failure,
Failure in optical RP3 interface and Antenna Line Device failure) and act accordingly.
2. Reset the alarming RF Module by blocking/unblocking it.
3. Check the cables between the System Module and RF Module.
4. If that does not help, replace the faulty RF Module.
FAULT NAME
RF Module overvoltage protection faulty
FAULT ID
1942: EFaultId_FrOverVoltageProtectionFaulty
MEANING
RF Module's overvoltage protection is broken.
INSTRUCTIONS
Replace the alarming RF Module.
FAULT NAME
RF power switched off remotely from BTS Site Manager
C2 General
FAULT ID
4107: EFaultId_RfPowerSwitchedOffFromBtsSmAl
MEANING
Power feeding for given Radio Module has been switched off by user from BTS Site
Manager remotely.
INSTRUCTIONS
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Enable power feeding towards Radio Module by switching RF power on in BTS Site
Manager.
FAULT NAME
RNW parameter mismatch
FAULT ID
1896: EFaultId_RnwParameterMismatchAl
MEANING
1. The RNW configuration data contains a request to create a cell for a non-existing
LCR: the LCR ID parameter associated with the object cell does not exist.
2. There is wrong RNW parameter related to each used Rf module in the MIMO configuration.
INSTRUCTIONS
1. Check that each cell object is assigned to an existing LCR ID in the Configuration file
and make corrections if necessary. / Check that there is valid RNW parameters for
instance pMax is suitable for each Rf modules used in the MIMO configuration.
2. Download the corrected Configuration file and reset BTS.
FAULT NAME
Technical log buffer freezing
FAULT ID
6450: EFaultId_TechnicalLogUploadRecommended
MEANING
The technical log buffer has been frozen in the BTS for an internal reason.
INSTRUCTIONS
This fault does not require any actions.
FAULT NAME
Temperature alarm
FAULT ID
3040: EFaultId_TemperatureAlarm
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MEANING
The internal temperature of the RF Module or System Module exceeds the threshold
value, or the ambient temperature of the module(s) is outside the specified limits.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Unit deleted
FAULT ID
74: EFaultId_UnitDeletedAl
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MEANING
An O&M internal fault. The fault diagnosis is that system deleted the unit. FDCLConfiguration checker.
OR
An LNMME/LNADJ object is deleted.
INSTRUCTIONS
None
C2 General
FAULT NAME
Unit temperature is high
FAULT ID
2: EFaultId_UnitOverheatAl
MEANING
The temperature of a unit exceeds the threshold value.
INSTRUCTIONS
Check the active fan alarms and the airflow of the BTS.
FAULT NAME
VSWR alarm
FAULT ID
1837: EFaultId_VSWRMajorAl
MEANING
VSWR value exceeds the defined level. The antenna line is mismatched or damaged.
INSTRUCTIONS
1. Check the antenna cables, connectors, antenna and possible antenna line devices.
2. Check the antenna line (TX-cable-antenna) impedance matching.
FAULT NAME
VSWR alarm
FAULT ID
1838: EFaultId_VSWRMinorAl
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MEANING
Radio Module (60W RRH)/the Filter (all others) has detected a VSWR value exceeding
the defined level. The antenna line is slightly mismatched.
INSTRUCTIONS
1. Check the antenna cables, connectors, antenna and possible antenna line devices.
2. Check the antenna line (TX-cable-antenna) impedance matching.
FAULT NAME
X2 neighbor cell configuration inconsistency
FAULT ID
6307: EFaultId_X2NeighbourCellInfoInconsistency
MEANING
Inconsistent cell information encountered by BTS in the configuration of an adjacent
BTS.
The only cases when BTS reports inconsistent data currently are when cell information(Physical Cell ID
and frequency that is EARFCN) received from an adjacent BTS is
found to be identical to
- the cell information received from another adjacent BTS
- one of ownm(that is local) BTS's configured cell information.
INSTRUCTIONS
C2 General
Cross-check the correctness of the cell configuration in the adjacent BTS and own (that
is local) BTS.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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7653 CELL FAULTY
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Critical
Meaning
A critical fault (or faults) has occurred in a unit (or units) that belong to the sector indicated in the alarm.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see the
source of the alarm and instructions fields of the corresponding alarms).
Below is the list of BTS fault(s) which might have caused this alarm in BTS LN4.0
release. In case of earlier SW release and in case you need more detailed fault descriptions refer to LTE
System Libraries. The BTS fault descriptions are also included in BTS
SW release documentation. If that does not help, contact your local Nokia Siemens
Networks representative.
FAULT NAME
Antenna Carrier configuration failure
FAULT ID
6259: EFaultId_AntennaCarrierMessageFailed
C2 General
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MEANING
Antenna carrier resources were not successfully set up during cell setup or cell deletion
procedure due to failure of RX or TX resource. Affected cell might be not operational.
INSTRUCTIONS
Perform the steps below in the listed order until the BTS fault disappears:
1.Check cables towards Radio Module
2.Reset Radio Module
3.Remove faulty unit
FAULT NAME
Antenna Line Device failure
FAULT ID
3100: EFaultId_AntennaLineFailure
MEANING
The System Module or the device itself has detected an abnormal operation or a failure
in the antenna line device.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the antenna line and antenna line devices. Make sure that the antenna line
connectors are in the right torque.
2. Reset the alarming RF module by blocking/unblocking it.
3. Replace the faulty parts and/or devices along the antenna line.
4. Replace the RF Module.
FAULT NAME
Antenna line faulty
FAULT ID
4045: EFaultId_AntennaLineFaultyAl
MEANING
An alarm message has been received from the antenna line. The antenna line is faulty.
INSTRUCTIONS
1. Check the antenna line and antenna line device that causes the alarm.
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2. Fix or replace the faulty parts/devices.
FAULT NAME
BB bus reception error (summing device)
FAULT ID
2016: EFaultId_Muksu_SMTimeOffAl
MEANING
The master frame in the received baseband bus frame is not in the correct place related
to the internally generated master frame pulse. Either the frame has been set into the
wrong place (PI delay) or the data itself is in the wrong place.
INSTRUCTIONS
1. Check the cables between the System Module and the connected module.
2. Replace the unit that causes the alarm (System Module).
FAULT NAME
BTS config error (Not enough HW for LCR)
FAULT ID
1868: EFaultId_NotEnoughHwForLcrAl
MEANING
RF Module cannot serve all cells commissioned to the RF module.
Or
Not enough FSP resources for commissioned cells during BTS startup phase.
INSTRUCTIONS
RF module:
Replace the single or dual PA RF module with a triple PA RF module.
Alternatively, recommission the BTS with fewer cells.
FSP:
1.Block & unblock the system module
2.If that does not help, replace the system module
FAULT NAME
BTS reset required
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FAULT ID
4001: EFaultId_BtsResetNeededAl
MEANING
The BTS detected an RF Module that cannot be taken into use without a BTS reset. The
RF Module type differs from the previous one or the RF module was not present during
startup.
FSP overheat occured. FSP temeperature back to normal and BTS reset is needed to
take the card back to use.
BTS startup: No FSP units detected by the time RP3 configuration starts.
INSTRUCTIONS
Reset (block/unblock) the BTS.
C2 General
FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
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FAULT NAME
Baseband bus configuration of <x> was rejected
FAULT ID
1811: EFaultId_BbBus_ConfFailedAl
MEANING
The baseband bus related configuration of <x> was rejected by the HW SW, DSP or RF
SW.
INSTRUCTIONS
Replace the alarming module.
FAULT NAME
Cell blocked
FAULT ID
49: EFaultId_CellBlockedAl
MEANING
The user has blocked the cell with BTS Site Manager.
INSTRUCTIONS
To cancel the fault, unblock the cell.
FAULT NAME
Cell power failure
FAULT ID
4090: EFaultId_TxCarrierInputPowerLowAl
MEANING
FlexiBTS:
C2 General
Flexi Radio Module has detected low downlink carrier input power from the Flexi System
Module.
INSTRUCTIONS
FlexiBTS:
1. Check the other active alarms and act accordingly.
2. If that does not help, block/unblock the system module.
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3. FSMr2: If that does not help, replace the system module.
FSMr3: If the faulty cell is on the baseband extension module, replace the extension
module.
FAULT NAME
Communication failure
FAULT ID
1806: EFaultId_CommunicationFailureAl
MEANING
Communication with an application failed. It has not replied to the message that has
been sent/resent to it.
INSTRUCTIONS
FlexiBTS:
1. Check that the unit/module is properly connected. If the unit/module LED does not
light up, the unit/module is faulty. Check the alarming unit/module.
2. Check the fault history.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
3. Check the Network management system alarms for the alarming local cell (LCR).
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4. Recommission the BTS to ensure that all parameters are correctly configured.
FAULT NAME
Distributed site support not enabled
FAULT ID
4076: EFaultId_DistributedSiteSupportNotEnabledAl
MEANING
Long fiber between FSM and FR detected but Distributed Site feature not enabled (actDistributedSite =
False).
INSTRUCTIONS
Perform the steps below in the listed order until the fault disappears:
1. Either enable the parameter actDistributedSite or switch to shorter fiber between FSM
and FR.
2. Restart FSM.
FAULT NAME
Failure during cell activation
FAULT ID
6267: EFaultId_CellActivationFailedAl
MEANING
Cell activation procedure failed because of processing error of cell configuration data.
The corresponding cell cannot be enabled.
INSTRUCTIONS
1) Try to block/unblock the cell.
2) Try to block/unblock FR module.
3) If it does not help, reset BTS.
FAULT NAME
Failure in optical RP3 interface
FAULT ID
3030: EFaultId_FailureInOptical_Rp3Interface
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MEANING
The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two
modules. The failure cannot be assigned to a specific module but
there are several possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults and act accordingly.
C2 General
2. Check the cables between the System Module and RF Module. Note that dirty optical
connectors may cause the signal level to drop too low.
3. Depending on the fault source, reset the RF Module and/or System Module by blocking/unblocking it.
4. Replace the alarming module's Small Form Factor Pluggable (SFP). Check also the
SFP in the other end and replace it, if needed.
5. Replace the alarming RF Module.
6. If the System Module is the only alarming source or replacing the RF Module does
not clear the fault situation, replace the alarming System Module.
FAULT NAME
Filter unit operation failed
FAULT ID
1840: EFaultId_TuningFailureAl
1841: EFaultId_UnitFaultyAl
4043: EFaultId_TuningFrequencyOutOfRangeAl
MEANING
A filter has not been able to tune on an appropriate sub-band properly (tuning failure),
or another major failure has been detected by the filter (unit faulty).
INSTRUCTIONS
In case of 4043:EFaultId_TuningFrequencyOutOfRangeAl: reconfigure the frequency
settings.
In case of 1840:EFaultId_TuningFailureAl, 1841:EFaultId_UnitFaultyAl: replace the
filter unit.
FAULT NAME
Frame clock missing
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FAULT ID
1903: EFaultId_FrFrameClockMissing
MEANING
The System Module clock reference differs from the RF Module clock.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, block/unblock the site.
4. If that does not help, replace the alarming RF Module.
FAULT NAME
Frame number synchronization error in optical interface
FAULT ID
2047: EFaultId_OIC_FrSyncLostAl
MEANING
The timing of the new RP1 synchronization burst deviates from the present RP1 timing
maintained in the System Module.
INSTRUCTIONS
C2 General
1. Reset the System Module that causes the alarm.
2. If resetting the module does not help, replace the System Module that causes the
alarm.
FAULT NAME
Incoherency in cell configuration
FAULT ID
1856: EFaultId_IncoherencyInCellConfigurationAl
MEANING
More than one sector configuration types (A, G, H) are configured to the same RF
Module.
INSTRUCTIONS
Recommission the LCRs in a way that only one sector type is used in one RF Module.
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FAULT NAME
Incoherency in cell configuration
FAULT ID
4000: EFaultId_IncoherencyInConfiguration
MEANING
Too many LCRs are commissioned to one RF Module.
INSTRUCTIONS
Recommission the BTS with a correct number of LCRs per RF Module.
FAULT NAME
Incoherency with RF Modules
FAULT ID
1857: EFaultId_IncoherencyWithRFModulesAl
MEANING
Incorrect cell configuration for RF modules with a different frequency. The same cell is
configured for two RF modules which are not at the same frequency.
INSTRUCTIONS
1. Check which Radio Modules are at for an incorrect frequency.
2. Replace the incompatible Radio Module(s).
FAULT NAME
Incompatible SW version detected
FAULT ID
23: EFaultId_IncompatibleSwVersionAl
24: EFaultId_ObsoleteSwVersionAl
MEANING
A new module with incompatible SW has probably been inserted in the BTS.
INSTRUCTIONS
Update compatible SW to the BTS (check the SW versions to see the active SW version,
and update the active SW version), unless it is automatically updated by NetAct.
C2 General
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FAULT NAME
Invalid frequency channel for the BTS HW
FAULT ID
1807: EFaultId_InvalidFrequencyChannelForBTSHW
MEANING
The requested channel in the startup phase is not acceptable for the BTS hardware,
because of an incorrect frequency band and/or a carrier spacing and/or the number of
carriers.
INSTRUCTIONS
Check the frequencies' parameters against the BTS HW configuration. The frequency is
out of the min/max limit of the HW, or the number of carriers for the HW type is
exceeded, or the carrier spacing limit is exceeded. There are different types of variations
of the HW that may have limitations in the supported frequency range and bandwidth.
FAULT NAME
Low noise amplifier failure
FAULT ID
1839: EFaultId_LNAFailureAl
MEANING
The Filter has detected a malfunction in the LNA unit.
INSTRUCTIONS
Replace the alarming Radio module.
FAULT NAME
Missing RNW parameter
FAULT ID
4009: EFaultId_RnwParameterMissingAl
MEANING
Mandatory parameter missing in the radio network configuration data.
INSTRUCTIONS
1. Check that all mandatory parameters exist in the radio network data for the specific
cell.
2. Download and activate the corrected commissioning file to the BTS.
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FAULT NAME
Missing RP3-01 link
FAULT ID
4064: EFaultId_MissingRp301LinkAl
MEANING
Not enough RP3-01 links connected between FSM and FR. Commissioned cells cannot
be routed via existing RP3-01 links.
INSTRUCTIONS
4064 triggered during BTS startup:
Note! Perform the steps below in the listed order until the fault disappears.
1. Check if other BTS fault indications are active.
2. Check that all RP3-01 fiber links and SFP transceivers between system module and
radio module are properly connected and working. Add missing parallel RP3-01 links.
3. Restart the Radio Module.
4. Restart the BTS.
4064 triggered during BTS runtime:
Change the faulty optical cable.
FAULT NAME
Module Clock Faulty
FAULT ID
1926: EFaultId_FrModuleClockFaulty
MEANING
The RF Module lost lock to the incoming clock.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
No connection to unit
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FAULT ID
10: EFaultId_NoConnectionToUnitAl
MEANING
The connection to a module that belongs to the BTS configuration has been lost.
INSTRUCTIONS
FlexiBTS:
1. Check that the module is properly connected. If the module LED does not light up, the
module is faulty. Check the alarming module.
2. Check the fault history.
FAULT NAME
Optical Interface faulty
FAULT ID
C2 General
2000: EFaultId_OIC_TxAl
2001: EFaultId_OIC_PresAl
MEANING
The Small Form Factor Pluggable (SFP) malfunction has occurred, or the SFP module
is not physically present (there is no electrical connection). The SFP is a part of the fibre
cable package.
INSTRUCTIONS
1. Check that the SFP (Small Form Factor Pluggable) is properly connected in the
System Module.
2. Replace the SFP module.
FAULT NAME
Parallel RP3-01 link length mismatch
FAULT ID
4072: EFaultId_ParallelLinkDifferenceTooLargeAl
MEANING
The parallel RP3-01 links towards one radio module have too large mutual length difference (more than
60 meters). The main link is considered as reference and the secondary link is compared to the main link.
INSTRUCTIONS
Replace parallel RP3-01 fiber links towards one radio module so that the maximum
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mutual length difference between fibers is less than 60 meters.
FAULT NAME
Pipe dangerously overheating
FAULT ID
1938: EFaultId_FrPipeOverheat
MEANING
Validated temperature of any PA sensor is greater than or equal to the predefined value
on unit property file.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Power level not supported
FAULT ID
4008: EFaultId_PowerLevelNotSupportedAl
MEANING
The power level defined in the RNW file is not supported by the HW.
INSTRUCTIONS
Define a valid TX power level value in the Radio Network configuration file (RNW) and
use the Commissioning Wizard in BTS Site Manager to send the file to the BTS.
FAULT NAME
C2 General
Power level not supported for cells utilizing the same radio module
FAULT ID
4152: EFaultId_PowerLevelNotSuitableAl
MEANING
Power level is too low or too high for at least one of the cells utilizing the same radio
module while at the same time at least one of the cells utilizing the same radio module
has supported power level.
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INSTRUCTIONS
Define a valid TX power level value in the Radio Network configuration file (RNW) for all
cells utilizing the same radio module and use the Commissioning Wizard in BTS Site
Manager to send the file to the BTS.
FAULT NAME
RF BB Bus Configuration Error
FAULT ID
1905: EFaultId_FrRfBbBusConfigError
MEANING
The RF Module baseband bus is configured incorrectly.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
RF BB Bus Synchronization Error
FAULT ID
1904: EFaultId_FrRfBbBusSynchError
MEANING
The baseband bus between the System Module and RF Module is out of synchronization.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, block/unblock the site.
4. If that does not help, replace the alarming RF Module.
FAULT NAME
RF BB bus Connection transmission error
FAULT ID
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1906: EFaultId_FrRfBbBusConnTransError
MEANING
There is an error in the baseband or optical bus.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. (RF sharing case only) Check that all RP3-01 fiber links and SFP transceivers
between system
module and radio module are properly connected and working. Replace broken
fiber link if needed.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
RF Module blocked
FAULT ID
1931: EFaultId_FrBlocked
MEANING
A shared (Medusa) FR is blocked.
INSTRUCTIONS
Unblock the alarming module.
FAULT NAME
RF Module configuring failed
FAULT ID
1900: EFaultId_FrConfiguringFailed
MEANING
The RF Module configuration failed because of a HW or SW fault.
INSTRUCTIONS
Replace the alarming RF Module.
FAULT NAME
RF Module critical file not found
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FAULT ID
1901: EFaultId_FrCriticalFileNotFound
MEANING
A critical configuration file is missing from the RF Module.
INSTRUCTIONS
Replace the alarming RF Module.
FAULT NAME
C2 General
RF Module failure
FAULT ID
3010: EFaultId_RfModuleFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the internal functionality
of the RF Module.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults (System Module failure, Baseband Bus failure,
Failure in optical RP3 interface and Antenna Line Device failure) and act accordingly.
2. Reset the alarming RF Module by blocking/unblocking it.
3. Check the cables between the System Module and RF Module.
4. If that does not help, replace the faulty RF Module.
FAULT NAME
RF Module out of order
FAULT ID
1912: EFaultId_FrOutOfOrder
MEANING
The RF Module is out of order because of a software or hardware fault.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
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FAULT NAME
RF loss of secondary optical interface
FAULT ID
1930: EFaultId_FRLossOfSecondaryOptIf
MEANING
Secondary optical link between the System Module and RF Module is lost.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, block/unblock the site.
4. If that does not help, replace the alarming RF Module.
FAULT NAME
RF module filter input power missing
FAULT ID
1910: EFaultId_FrFilterInputPowerMissing
MEANING
The RF Module filter has measured too low TX power.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
C2 General
FAULT NAME
RF module power output faulty
FAULT ID
1918: EFaultId_FrPowerOutputFault
MEANING
The Power Supply has detected an overvoltage, undervoltage or overcurrent in the RF
Module.
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INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
RX out of order
FAULT ID
1911: EFaultId_FrRxOutOfOrder
MEANING
The RF Module RX RF synthesizer is not locked.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Radio resources switched off
FAULT ID
4057: EfaultId_RfSwitchedOffAl
MEANING
The cells, whose TX carriers are served by the affected Antenna Lines are deactivated
to reduce power transmitted by the Power Amplifier in Radio Module for the sake of protecting the Power
Amplifier against the HW failure due to operation under excessive
VSWR value condition (antenna line impedance mismatch).
INSTRUCTIONS
1. Check the antenna lines: antennas, antenna cables, connector torques and antenna
line devices.
2. Check the antenna line (TX-cable-antenna) impedance matching.
FAULT NAME
Receiving failure in Optical Interface
FAULT ID
2002: EFaultId_OIC_RxAl
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MEANING
The incoming optical signal to the Small Form Factor Pluggable (SFP) is missing, too
weak, or the fibre cable has been detached.
The connection between the System Module and the RF Module units (Linear Transceiver, Antenna Filter
or Antenna Line Device) is broken.
INSTRUCTIONS
1. Check the status of the module behind the faulty link (power on, and so on).
2. Check the SFP (Small Form Factor Pluggable) from both ends (the System Module
and the module behind the faulty link). The optical interface LED indicates the faulty
SFP. Replace the SFP if it is faulty.
3. Clean the connectors, test the fibre cable, and replace it if it is faulty.
4. If the previous steps do not help, replace the module behind the faulty link.
FAULT NAME
Synchronization failure in Optical Interface <opt link/RP3 link>
FAULT ID
2005: EFaultId_OIC_SyncChAl
MEANING
The RP3 channel lost the frame synchronization state that it had achieved.
INSTRUCTIONS
1. Swap the alarming and working links, and check where the alarm is reported now.
2. If the alarming link remains the same, replace the System Module.
3. If the alarming link changes, replace the module behind that link.
FAULT NAME
TX out of order
FAULT ID
1907: EFaultId_FrTxOutOfOrder
MEANING
The RF Module TX path is not usable.
INSTRUCTIONS
1. Block/unblock the RF Module.
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2. If that does not help, replace the alarming RF Module.
FAULT NAME
Temperature alarm
C2 General
FAULT ID
3040: EFaultId_TemperatureAlarm
MEANING
The internal temperature of the RF Module or System Module exceeds the threshold
value, or the ambient temperature of the module(s) is outside the specified limits.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
FAULT NAME
Temperature too low (Heating ongoing)
FAULT ID
1922: EFaultId_FrTemperatureTooLow
MEANING
During RF startup: The temperature inside the RF Module is too low. Heating of module
is ongoing. Wait until the alarm is canceled. This might take up to 30 minutes.
During RF runtime: The temperature inside the RF module is going too low. Problem
might occur.
INSTRUCTIONS
During RF startup only:
1. Heating of module is ongoing. Wait until the alarm is canceled. This may take up to
30 minutes.
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2. If that does not help, block/unblock the RF Module.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
C2 General
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Unit (module) dangerously overheating
FAULT ID
1937: EFaultId_FrDangerouslyOverheat
MEANING
Validated sensor temperature is greater than or equal to the predefined value on unit
property file.
INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
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Unit SW download failed
FAULT ID
6: EFaultId_SwDownloadAl
MEANING
Software update to the module or submodule has failed.
INSTRUCTIONS
FlexiBTS
1. Download the BTS SW again.
2. Reset (block/unblock) the BTS.
3. If Step 2 does not help, replace the alarming module.
FAULT NAME
Unit blocked
FAULT ID
48: EFaultId_UnitBlockedAl
MEANING
A module is blocked with BTS Site Manager.
The purpose is to avoid fault indications that may be raised during the module maintenance task.
INSTRUCTIONS
Unblock the module with BTS Site Manager.
FAULT NAME
Unit not supported by current BTS SW version
FAULT ID
95: EFaultId_NotSupportedUnit
MEANING
An unsupported unit was found in the System Module. Typically this happens when a
new unit version is installed and there is an older System Module SW in use that does
not support the new unit version.
C2 General
INSTRUCTIONS
FlexiBTS:
1. Upgrade the system module SW.
2. Replace the unit.
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FAULT NAME
Unknown HW resource
FAULT ID
94: EFaultId_UnknownUnitType
MEANING
A unit cannot be identified by its product code or by its physical device address (object
ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming unit/module.
FAULT NAME
Unknown product code
FAULT ID
93: EFaultId_UnknownProductCode
MEANING
A module cannot be identified by its product code but is known by its physical device
address (object_ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming module.
FAULT NAME
VSWR alarm
FAULT ID
1837: EFaultId_VSWRMajorAl
MEANING
VSWR value exceeds the defined level. The antenna line is mismatched or damaged.
INSTRUCTIONS
1. Check the antenna cables, connectors, antenna and possible antenna line devices.
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2. Check the antenna line (TX-cable-antenna) impedance matching.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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2.31
Base Station Alarms
7654 CELL OPERATION DEGRADED
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Major
Meaning
A major fault (or faults) has occurred in a unit (or units) that belong to the sector indicated
in the alarm.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see the
source of the alarm and instructions fields of the corresponding alarms).
Below is the list of BTS fault(s) which might have caused this alarm in BTS LN4.0
release. In case of earlier SW release and in case you need more detailed fault descriptions refer to LTE
System Libraries. The BTS fault descriptions are also included in BTS
SW release documentation. If that does not help, contact your local Nokia Siemens
Networks representative.
FAULT NAME
10b8b coding error in optical interface device <opt link/RP3>
FAULT ID
2004: EFaultId_OIC_LVDSRecAl
C2 General
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MEANING
The fibre cable has an interference; the data becomes faulty.
A physical connection failure between the optical interface and the summing function
(caused by bad circuit joints, for example).
INSTRUCTIONS
1. Reset the RF Module behind the faulty optical interface by blocking/unblocking it.
2. If that does not clear the fault situation, replace the RF Module that causes the alarm.
3. Reset the System Module.
4. If the System Module is the only source causing the alarm, or actions mentioned
above do not clear the fault situation, Replace the System Module that causes the alarm.
FAULT NAME
3GPP/AISG communication administratively disabled
FAULT ID
4142: EFaultId_Communication3gppAdministrativelyDisabledAl
MEANING
HDLC Link is disabled for reporting Antenna Line or IUANT port.
INSTRUCTIONS
In order to revert change, parameter Communication3gppEnabled should be enabled
for reporting Antenna Line.
FAULT NAME
Antenna Carrier configuration failure
FAULT ID
6259: EFaultId_AntennaCarrierMessageFailed
MEANING
Antenna carrier resources were not successfully set up during cell setup or cell deletion
procedure due to failure of RX or TX resource. Affected cell might be not operational.
INSTRUCTIONS
Perform the steps below in the listed order until the BTS fault disappears:
1.Check cables towards Radio Module
2.Reset Radio Module
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3.Remove faulty unit
FAULT NAME
Antenna Line Device failure
FAULT ID
3100: EFaultId_AntennaLineFailure
MEANING
The System Module or the device itself has detected an abnormal operation or a failure
in the antenna line device.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the antenna line and antenna line devices. Make sure that the antenna line
connectors are in the right torque.
2. Reset the alarming RF module by blocking/unblocking it.
3. Replace the faulty parts and/or devices along the antenna line.
4. Replace the RF Module.
FAULT NAME
Antenna line device HW failure
FAULT ID
1847: EFaultId_HardwareErrorAl
MEANING
A hardware failure detected by an antenna line device. Usually, this is a permanent fault
(the hardware is broken).
INSTRUCTIONS
1. Block/unblock the Radio module to give a power-off reset to the antenna line devices.
2. If that does not help, replace the antenna line device.
FAULT NAME
Antenna line device configuration failure
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FAULT ID
1848: EFaultId_WorkingSoftwareMissingAl
1888: EFaultId_AlConfigurationFailureAl
MEANING
An antenna line or antenna line device is not properly configured.
INSTRUCTIONS
1. Update the proper SW to the device.
2. Check/correct the antenna line configuration.
3. If that does not help, replace the antenna line device.
FAULT NAME
Antenna line failure
FAULT ID
1836: EFaultId_ALOvercurrentAl
C2 General
MEANING
Radio Module (60W RRH) or Filter (all others) has detected overcurrent on the antenna
line. The antenna line might be damaged (short circuit) or some antenna line device is
causing overload. All antenna line devices powered by the antenna line are out of order.
INSTRUCTIONS
1. Check the antenna line and antenna line devices. Fix or replace the faulty
parts/devices.
2. Alarm is cancelled only at RF Module reset or BTS reset.
FAULT NAME
Antenna line operation degraded
FAULT ID
4046: EFaultId_AntennaLineDegradedAl
MEANING
An alarm message has been received from the antenna line device. The antenna line
operation is degraded.
INSTRUCTIONS
1. Check the antenna line and antenna line device that causes the alarm.
2. Fix or replace the faulty parts/devices.
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Base Station Alarms
FAULT NAME
BTS SW download or activation failed
FAULT ID
29: EFaultId_FileCorruptionAl
30: EFaultId_SwUpdateAl
MEANING
The SW update to the BTS has failed. The error can be caused by a module reset during
the SW update, a hardware problem in the module or a corrupted flash file system.
INSTRUCTIONS
FlexiBTS:
1. Retry the SW update.
2. If other flash memory-related faults are active for the alarming module at the same
time, replace the alarming module.
FAULT NAME
BTS internal SW management problem
FAULT ID
3090: EFaultId_BtsInternalSwManagementProblem
MEANING
A software update to a module or subassembly has failed, or a corrupted SW file has
been detected in the FLASH.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults. If the ROM disk is corrupted, change the alarming
C2 General
module.
2. Reset the RF Module and/or System Module, depending on the BTS fault source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace the alarming module.
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FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
FAULT NAME
Buffer over/underflow in clock crossing logic
FAULT ID
2054: EFaultId_MuksuRxClkErrorAl
MEANING
Clock crossing buffer underflow or overflow in RX block and the received data might not
be valid. The fault is an indication of either too large clock drift between received signal
and internal clock or wrong RX rate setting.
INSTRUCTIONS
1. Check the status of the module behind the faulty link (power on, and so on).
2. Check the alarming fiber connection.
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FAULT NAME
Communication failure
FAULT ID
1806: EFaultId_CommunicationFailureAl
MEANING
Communication with an application failed. It has not replied to the message that has
been sent/resent to it.
INSTRUCTIONS
FlexiBTS:
1. Check that the unit/module is properly connected. If the unit/module LED does not
light up, the unit/module is faulty. Check the alarming unit/module.
2. Check the fault history.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
3. Check the Network management system alarms for the alarming local cell (LCR).
4. Recommission the BTS to ensure that all parameters are correctly configured.
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FAULT NAME
Configuration file corrupted
FAULT ID
1924: EFaultId_FrConfigurationFileCorrupted
MEANING
The RF Module SW detected conflicting or corrupted configuration data.
INSTRUCTIONS
1. Block/unblock the RF Module
2. If that does not help, replace the alarming RF Module.
C2 General
FAULT NAME
DC voltage administratively disabled
FAULT ID
4141: EFaultId_DcVoltageAdministrativelyDisabledAl
MEANING
Feeding voltage is disabled for selected Antenna Line.
INSTRUCTIONS
In order to revert changes, DC Voltage should be enabled for reporting Antenna Line.
FAULT NAME
FPGA SW update failed
FAULT ID
1928: EFaultId_FrFpgaSwUpdateFailed
MEANING
The FPGA software update has failed.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
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Base Station Alarms
Failure in optical RP3 interface
FAULT ID
3030: EFaultId_FailureInOptical_Rp3Interface
MEANING
The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two
modules. The failure cannot be assigned to a specific module but
there are several possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module. Note that dirty optical
connectors may cause the signal level to drop too low.
3. Depending on the fault source, reset the RF Module and/or System Module by blocking/unblocking it.
4. Replace the alarming module's Small Form Factor Pluggable (SFP). Check also the
SFP in the other end and replace it, if needed.
5. Replace the alarming RF Module.
6. If the System Module is the only alarming source or replacing the RF Module does
not clear the fault situation, replace the alarming System Module.
FAULT NAME
Filter unit operation failed
FAULT ID
1840: EFaultId_TuningFailureAl
1841: EFaultId_UnitFaultyAl
C2 General
4043: EFaultId_TuningFrequencyOutOfRangeAl
MEANING
A filter has not been able to tune on an appropriate sub-band properly (tuning failure),
or another major failure has been detected by the filter (unit faulty).
INSTRUCTIONS
In case of 4043:EFaultId_TuningFrequencyOutOfRangeAl: reconfigure the frequency
settings.
In case of 1840:EFaultId_TuningFailureAl, 1841:EFaultId_UnitFaultyAl: replace the
filter unit.
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FAULT NAME
Frame clock missing
FAULT ID
1903: EFaultId_FrFrameClockMissing
MEANING
The System Module clock reference differs from the RF Module clock.
INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, block/unblock the site.
4. If that does not help, replace the alarming RF Module.
FAULT NAME
Incompatible SW version detected
FAULT ID
23: EFaultId_IncompatibleSwVersionAl
24: EFaultId_ObsoleteSwVersionAl
MEANING
A new module with incompatible SW has probably been inserted in the BTS.
INSTRUCTIONS
Update compatible SW to the BTS (check the SW versions to see the active SW version,
and update the active SW version), unless it is automatically updated by NetAct.
FAULT NAME
Increased BER detected on the optical connection to radio module
FAULT ID
1955: EFaultId_IncrBerOnRp3
MEANING
Increased bit error rate has been detected on the optical link to radio module which
results in sporadical LCV errors in downlink baseband processing.
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INSTRUCTIONS
Note! Perform the steps below in the listed order until the fault disappears:
1. Check the optical connection between system module and FR module. Check SFP
module(s) and/or readjust optical connectors and verify operation of any devices in the
optical network between FSM and FRM, if such devices are in use.
2. Block/unblock the FR module.
3. If it does not help, replace the SFP module(s) in which the malfunctioning optical connection is
terminated and/or replace the fiber.
FAULT NAME
Low noise amplifier failure
FAULT ID
1839: EFaultId_LNAFailureAl
MEANING
The Filter has detected a malfunction in the LNA unit.
INSTRUCTIONS
Replace the alarming Radio module.
FAULT NAME
MHA unit operation failure
FAULT ID
1869: EFaultId_MinorTMAFaultAl
1870: EFaultId_MajorTMAFaultAl
MEANING
A fault in the Masthead Amplifier (MHA) is detected. The fault reduces the gain performance or
completely prevents the MHA from functioning.
INSTRUCTIONS
Replace the alarming module.
FAULT NAME
Mast Head Amplifier fault
FAULT ID
3120: EFaultId_MastHeadAmplifierFault
MEANING
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The FlexiBTS has detected an abnormal operation or a failure in the Masthead Amplifier
(MHA).
Note that the Tower Mounted Amplifier (TMA) is a synonym for the MHA and is used by
C2 General
the Antenna Interface Standards Group (AISG).
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the cables related to the Masthead Amplifier (MHA).
2. Reset the alarming MHA module by blocking/unblocking the RF Module which the
MHA is connected to.
3. Replace the faulty device(s).
FAULT NAME
Mast Head Amplifier fault above current window, <line>
FAULT ID
1834: EFaultId_AboveCurrentWindowAl
MEANING
The Masthead Amplifier (MHA) does not work properly. The received RF signal level is
decreased.
If both stages of the LNA on the uplink path fail, the MHA swithes the LNA to by-pass
mode. In by-pass mode, the MHA has no gain but some loss. If only one stage of the
LNA fails, the MHA still has about half of its normal gain. With an integrated MHA
(WMHC), the fault might affect both main and diversity branches or just one of them.
INSTRUCTIONS
1. Check the antenna cables and connectors towards the MHA. Fix or replace the
broken parts.
2. Restart the MHA by blocking and unblocking the Flexi Radio (FR) Module.
NOTE! This operation affects all antenna lines and cells related to the FR Module, not
just the faulty one. If the alarm reappears, replace the alarming module.
FAULT NAME
Mast Head Amplifier fault below current window, <line>
FAULT ID
1835: EFaultId_BelowCurrentWindowAl
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MEANING
The Masthead Amplifier (MHA) does not work properly. The received RF signal level is
decreased.
If both stages of the LNA on the uplink path fail, the MHA swithes the LNA to by-pass
mode. In by-pass mode, the MHA has no gain but some loss. If only one stage of the
LNA fails, the MHA still has about a half of its normal gain. With an integrated MHA
(WMHC), the fault might affect both main and diversity branches or just one of them.
INSTRUCTIONS
1. Check the antenna cables and connectors towards the MHA. Fix or replace the
broken parts.
2. Restart the MHA by blocking and unblocking the Flexi Radio (FR) Module. NOTE!
This operation affects all antenna lines and cells related to the FR Module, not just the
faulty one. If the alarm reappears, replace the alarming module.
C2 General
FAULT NAME
No connection to unit
FAULT ID
10: EFaultId_NoConnectionToUnitAl
MEANING
The connection to a module that belongs to the BTS configuration has been lost.
INSTRUCTIONS
FlexiBTS:
1. Check that the module is properly connected. If the module LED does not light up, the
module is faulty. Check the alarming module.
2. Check the fault history.
FAULT NAME
No feedback signal
FAULT ID
1920: EFaultId_FrNoFeedBackSignal
MEANING
The feedback signal to predistortion is too weak or missing. The TX performance is
degraded.
INSTRUCTIONS
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1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Optical Interface Data/Control/Ethernet Buffer Full
FAULT ID
2007: EFaultId_OIC_DBTxFullAl
2008: EFaultId_OIC_CBRxFullAl
2009: EFaultId_OIC_CBTxFullAl
2010: EFaultId_OIC_EBFullAl
MEANING
The RP3 or Ethernet buffering is not working, and the buffer becomes full. The optical
device is malfunctioning. The fault might be generated because of synchronization
problems or incorrect initialization.
INSTRUCTIONS
1. Swap the alarming and working links, and check where the alarm is reported now.
2. If the alarming link remains the same, replace the System Module.
3. If the alarming link changes, replace the module behind that link.
FAULT NAME
Optical interface buffer alarm
FAULT ID
2051: EFaultId_Muksu_BufferAl
MEANING
C2 General
RP3 or Ethernet buffering is not working, and the buffer becomes full. The optical device
malfunctions. The fault might be generated because of synchronization problems or
incorrect initialization.
INSTRUCTIONS
1. Depending on the optical interface, reset the module behind the optical interface that
causes the alarm by blocking/unblocking it.
2. If that does not clear the fault situation, replace the module behind the optical interface
that causes the alarm.
3. If the System Module is the only alarm source, or replacing the RF Module does not
clear the fault situation, replace the System Module that causes the alarm.
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FAULT NAME
RET Antenna control failure
FAULT ID
1842: EFaultId_MotorJamAl
1843: EFaultId_ActuatorJamAl
1844: EFaultId_NotCalibratedAl
1845: EFaultId_NotConfiguredAl
1846: EFaultId_ActuatorInterferenceAl
MEANING
Antenna tilting is not possible or might function incorrectly.
INSTRUCTIONS
1. Recalibrate the RET antenna.
2. If that does not help, replace the RET unit.
FAULT NAME
RF BB Bus Configuration Error
FAULT ID
1905: EFaultId_FrRfBbBusConfigError
MEANING
The RF Module baseband bus is configured incorrectly.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
RF BB Bus Synchronization Error
FAULT ID
1904: EFaultId_FrRfBbBusSynchError
MEANING
The baseband bus between the System Module and RF Module is out of synchronization.
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INSTRUCTIONS
1. Check the cables between the System Module and RF Module.
2. Block/unblock the RF Module.
3. If that does not help, block/unblock the site.
4. If that does not help, replace the alarming RF Module.
FAULT NAME
RF BB bus Connection transmission error
FAULT ID
1906: EFaultId_FrRfBbBusConnTransError
MEANING
There is an error in the baseband or optical bus.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. (RF sharing case only) Check that all RP3-01 fiber links and SFP transceivers
between system
module and radio module are properly connected and working. Replace broken
fiber link if needed.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
RF BB energy too high
FAULT ID
1909: EFaultId_FrBbEnergyTooHigh
MEANING
The TX feedback signal power is too high.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
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FAULT NAME
RF Module failure
FAULT ID
3010: EFaultId_RfModuleFailure
MEANING
The FlexiBTS has detected an abnormal operation or a failure in the internal functionality
of the RF Module.
C2 General
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other active BTS faults (System Module failure, Baseband Bus failure,
Failure in optical RP3 interface and Antenna Line Device failure) and act accordingly.
2. Reset the alarming RF Module by blocking/unblocking it.
3. Check the cables between the System Module and RF Module.
4. If that does not help, replace the faulty RF Module.
FAULT NAME
RF Module file not found
FAULT ID
1902: EFaultId_FrFileNotFound
MEANING
The RF Module SW detected that a non-critical configuration file is missing.
INSTRUCTIONS
1.Block/unblock the RF Module.
2.If that does not help, replace the alarming RF Module.
FAULT NAME
RF Power decreased
FAULT ID
1927: EFaultId_FrPowerDecreased
MEANING
The highest temperature exceeds the power decrease limit.
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INSTRUCTIONS
1. Check the fans and ensure that the ambient temperature on the site is acceptable.
2. If that does not help, block/unblock the alarming RF Module.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
RF module filter input power missing
FAULT ID
1910: EFaultId_FrFilterInputPowerMissing
MEANING
The RF Module filter has measured too low TX power.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
RS485 IUANT port failure
FAULT ID
4069: EFaultId_Rs485PowerFailureAl
MEANING
C2 General
Radio Module or Filter (all others) has detected overcurrent on RS485 IUANT
port. Some antenna line device is causing overload. Depending on HW implementation
antenna line devices powered by the RS485 IUANT and/or powered by antenna line are
out of order.
Overcurrent was detected on RS485 IUANT port. Some antenna line device is causing
overload or shortcut occurring on port. Antenna line devices powered by the rs485
IUANT port are out of order.
INSTRUCTIONS
1. Check the RS485 IUANT i/f and antenna line devices. Fix or replace the faulty
parts/devices.
2. Alarm is cancelled only at RF Module reset or the BTS reset.
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FAULT NAME
RX out of order
FAULT ID
1911: EFaultId_FrRxOutOfOrder
MEANING
The RF Module RX RF synthesizer is not locked.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
SW corrupted
FAULT ID
1850: EFaultId_SwCorruptedAl
4029: EFaultId_SwCorruptedPermanentAl
MEANING
A corrupted SW file in the FLASH is detected.
Unit cannot complete start-up.
INSTRUCTIONS
Update the SW to the BTS.
FAULT NAME
TX out of order
FAULT ID
1907: EFaultId_FrTxOutOfOrder
MEANING
The RF Module TX path is not usable.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
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FAULT NAME
Temperature alarm
FAULT ID
3040: EFaultId_TemperatureAlarm
MEANING
The internal temperature of the RF Module or System Module exceeds the threshold
value, or the ambient temperature of the module(s) is outside the specified limits.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
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Base Station Alarms
FAULT NAME
Transmission quality deteriorated
FAULT ID
C2 General
1921: EFaultId_FrTransmissionQualityDetoriated
MEANING
The TX signal adjustment fails.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Unit unidentified
FAULT ID
1923: EFaultId_FrUnitUnidentified
MEANING
The permanent memory in the module is corrupted and the module product code or
serial number is missing, or the module product code is unknown.
INSTRUCTIONS
1. Block/unblock the RF Module.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Unknown HW resource
FAULT ID
94: EFaultId_UnknownUnitType
MEANING
A unit cannot be identified by its product code or by its physical device address (object
ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming unit/module.
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FAULT NAME
Unknown product code
FAULT ID
93: EFaultId_UnknownProductCode
MEANING
A module cannot be identified by its product code but is known by its physical device
address (object_ID).
INSTRUCTIONS
FlexiBTS: Replace the alarming module.
FAULT NAME
VSWR alarm
FAULT ID
1838: EFaultId_VSWRMinorAl
MEANING
Radio Module (60W RRH)/the Filter (all others) has detected a VSWR value exceeding
the defined level. The antenna line is slightly mismatched.
C2 General
INSTRUCTIONS
1. Check the antenna cables, connectors, antenna and possible antenna line devices.
2. Check the antenna line (TX-cable-antenna) impedance matching.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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2.32
Base Station Alarms
7655 CELL NOTIFICATION
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Minor
Meaning
A minor fault (or faults) has occurred in a unit (or units) that belong to the sector indicated
in the alarm.
Check the reason for the fault from the supplementary text field of the alarm.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Instructions
Verify the configuration of a BTS by checking the commissioning, cabling and correct
installation of the units/modules at the BTS. Make sure the environment does not cause
the fault.
Before a unit/module is replaced at the BTS, the site should be reset to recover from any
temporary faults which might have caused the malfunctioning of the unit/module. When
an active alarm is a 'Start' alarm, a site reset is required to cancel the alarm. If the site
reset or module block/unblock does not help, replace the faulty unit/module (see the
source of the alarm and instructions fields of the corresponding alarms).
Below is the list of BTS fault(s) which may have caused this alarm in BTS LN4.0 release.
In case of earlier SW release and in case you need more detailed fault descriptions refer
to LTE System Libraries. The BTS fault descriptions are also included in BTS SW
release documentation. If that does not help, contact your local Nokia Siemens
Networks representative.
FAULT NAME
Antenna Line Device Operation Failure
C2 General
FAULT ID
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1871: EFaultId_BusyAl
1872: EFaultId_FormatErrorAl
1873: EFaultId_UnsupportedProcedureAl
1874: EFaultId_OutOfRangeAl
MEANING
The device is not working properly, the configuration is not valid, or a given parameter
is incorrect.
INSTRUCTIONS
1. Check the functionality of the antenna line device.
2. Check the compatibility between the antenna line device and the BTS.
3. Check that the given parameters are in the valid range.
FAULT NAME
Antenna Line Device failure
FAULT ID
3100: EFaultId_AntennaLineFailure
MEANING
The System Module or the device itself has detected an abnormal operation or a failure
in the antenna line device.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the antenna line and antenna line devices. Make sure that the antenna line
connectors are in the right torque.
2. Reset the alarming RF module by blocking/unblocking it.
3. Replace the faulty parts and/or devices along the antenna line.
4. Replace the RF Module.
FAULT NAME
BTS SW download or activation failed
FAULT ID
29: EFaultId_FileCorruptionAl
30: EFaultId_SwUpdateAl
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C2 General
MEANING
The SW update to the BTS has failed. The error can be caused by a module reset during
the SW update, a hardware problem in the module or a corrupted flash file system.
INSTRUCTIONS
FlexiBTS:
1. Retry the SW update.
2. If other flash memory-related faults are active for the alarming module at the same
time, replace the alarming module.
FAULT NAME
BTS internal SW management problem
FAULT ID
3090: EFaultId_BtsInternalSwManagementProblem
MEANING
A software update to a module or subassembly has failed, or a corrupted SW file has
been detected in the FLASH.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults. If the ROM disk is corrupted, change the alarming
module.
2. Reset the RF Module and/or System Module, depending on the BTS fault source:
a. Reset the RF Module by blocking/unblocking it.
b. Reset the System Module by blocking/unblocking it.
3. Update and activate the SW to the BTS.
4. Check the SW files.
5. Replace the alarming module.
FAULT NAME
Baseband Bus failure
FAULT ID
3020: EFaultId_BaseBandBusFailure
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MEANING
The FlexiBTS has detected an abnormal operation or a failure in the BTS internal
baseband bus. The failure cannot be assigned to a specific module but there are several
possible fault sources.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
FlexiBTS:
1. Check the other active BTS faults and act accordingly.
2. Check the cables between the System Module and RF Module.
3. Reset the RF Module and/or System Module, depending on the alarm source:
a. Reset the RF Module by blocking/unblocking it.
C2 General
b. Reset the System Module by blocking/unblocking it.
4. Replace the alarming RF Module.
5. If the System Module is the source or replacing the RF Module does not clear the fault
situation, replace the alarming System Module.
FAULT NAME
Configuration error: <x>
FAULT ID
3070: EFaultId_ConfigurationError
MEANING
There is a compatibility problem in the BTS HW/SW versions or the HW/HW configuration. Another
possibility is that there is a mismatch in the BTS configuration.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the installed HW/SW version compatibility and the HW compatibility with the
current BTS configuration.
2. Check that the BTS cell parameters from the Network management system match
the BTS HW configuration (for example frequency, power).
3. Check the Network management system alarms for the alarming local cell (LCR).
4. Recommission the BTS to ensure that all parameters are correctly configured.
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FAULT NAME
Fan failure
FAULT ID
3050: EFaultId_FanFailure
MEANING
A fan, all the fans or more than one fan in the same fan group are rotating slower than
requested, are not rotating at all, or the RPM information is not available for the fans.
The reason for this fault can be a broken fan.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the fan and cabling.
2. Replace the faulty fan module.
FAULT NAME
File corrupted in SW download
FAULT ID
28: EFaultId_SwPackageAl
MEANING
The SW being downloaded is corrupted or incorrectly formed.
INSTRUCTIONS
1. Retry the SW update.
2. Save the snapshot and check the download status from the BTS SWDLreport in the
snapshot file.
C2 General
FAULT NAME
Incoherency In Cell Configuration
FAULT ID
4044: EFaultId_IncoherencyCellConfigurationAl
MEANING
Cell configuration is not officially supported.
INSTRUCTIONS
Check the configuration of the configured cell.
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FAULT NAME
Phich Power Boost not applied
FAULT ID
6112: EFaultId_PhichPowerBoostAl
MEANING
Configured PHICH transmission power boost cannot be applied either partly or at all due
to a lack of remaining power after considering (boosted) cell-specific DL RS power,
(boosted) PCFICH power and minimum reserved power for PDCCH.
INSTRUCTIONS
PHICH (Physical HARQ Indication Channel) transmission power boost can be
increased by reducing the configured boosts for cell-specific downlink reference signal
and/or PCFICH.
FAULT NAME
RF Test loop faulty
FAULT ID
1919: EFaultId_FrRfTestLoopFault
MEANING
The RF Module cannot run the test loop.
INSTRUCTIONS
1. Block/unblock the RF Module and make the test loop again.
2. If that does not help, replace the alarming RF Module.
FAULT NAME
Radio resources switched off
FAULT ID
4057: EfaultId_RfSwitchedOffAl
MEANING
The cells, whose TX carriers are served by the affected Antenna Lines are deactivated
to reduce power transmitted by the Power Amplifier in Radio Module for the sake of protecting the Power
Amplifier against the HW failure due to operation under excessive
VSWR value condition (antenna line impedance mismatch).
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INSTRUCTIONS
1. Check the antenna lines: antennas, antenna cables, connector torques and antenna
line devices.
2. Check the antenna line (TX-cable-antenna) impedance matching.
FAULT NAME
System information broadcast parameters overflow
FAULT ID
6351: EFaultId_SystemInfoValueTagHandlingFailed
MEANING
System Information Broadcast related parameters have changed more than 32 times
within 3 hours.
INSTRUCTIONS
Note! This fault does not require any (special) actions.
FAULT NAME
TX failure in MIMO
FAULT ID
4003: EFaultId_TxFailureTurnMimoOffAl
MEANING
Due to TX path failure MIMO (Multiple Input Multiple Output) functionality is not operational in the cell
related to the faulty TX.
INSTRUCTIONS
Software and hardware reconfiguration can be made, to the setup where faulty TX is not
used.
Then the cells will operate in the single mode unless all the TXes related to the proper
cell are faulty.
Check the other active BTS faults and act accordingly.
FAULT NAME
Temperature alarm
FAULT ID
3040: EFaultId_TemperatureAlarm
MEANING
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The internal temperature of the RF Module or System Module exceeds the threshold
value, or the ambient temperature of the module(s) is outside the specified limits.
C2 General
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS fault disappears.
1. Check the other BTS faults and act accordingly.
2. Check the ambient temperature of the BTS/modules. If the ambient temperature is
too high, make sure the airflow to the BTS modules is unobstructed, that is, the BTS
modules are not covered with anything. If the ambient temperature is too low, it takes a
while for the BTS/modules to heat themselves to the threshold value.
3. Reset the alarming module by blocking/unblocking it.
4. Replace the alarming module.
FAULT NAME
Temperature too low (Heating ongoing)
FAULT ID
1922: EFaultId_FrTemperatureTooLow
MEANING
During RF startup: The temperature inside the RF Module is too low. Heating of module
is ongoing. Wait until the alarm is canceled. This might take up to 30 minutes.
During RF runtime: The temperature inside the RF module is going too low. Problem
might occur.
INSTRUCTIONS
During RF startup only:
1. Heating of module is ongoing. Wait until the alarm is canceled. This may take up to
30 minutes.
2. If that does not help, block/unblock the RF Module.
3. If that does not help, replace the alarming RF Module.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
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MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Unit (module) temperature is high
C2 General
FAULT ID
1936: EFaultId_FrTempHigh
MEANING
Validated module temperature is higher than the predefined maximum allowed value.
INSTRUCTIONS
Check the fans and ensure that the ambient temperature on the site is acceptable.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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7656 BASE STATION CONNECTIVITY LOST
Probable cause: Indeterminate
Event type: Communications
Default severity: Critical
Meaning
A critical fault (or faults) has occured in the base station interface.
Check the reason for the fault from the supplementary text field of the
alarm.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Additional information fields
Destination IP address
Instructions
FAULT NAME
S1 interface recovery failure
FAULT ID
6317: EFaultId_S1ResetRetryOut
MEANING
S1 interface reset has failed after several attempts. This indicates that a severe failure
has occurred, for example there is some configuration problem, there is no S1 connectivity, MME has
failed, etc.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the alarm disappears.
1. Check the availability of MME.
2. Check the connection with MME.
3. Disconnect and reconnect MME.
FAULT NAME
S1 interface setup failure
C2 General
FAULT ID
6308: EFaultId_S1SetupRetryOut
MEANING
There is no S1 connectivity to an MME, the MME has failed, etc. If the fault is canceled,
autonomous recovery actions (reset) have solved the fault situation.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the alarm disappears:
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1. Check availability of MME.
2. Check other faults on MME and BTS.
3. Check the parameters related to S1 interface in the BTS and MME.
4. Reset the BTS.
FAULT NAME
Toggling: <Fault name>
FAULT ID
4026: EFaultId_TogglingAl
MEANING
BTS Fault, which fault name is mentioned in the Fault name -field, is toggling in the BTS.
Toggling alarm condition is informed to user with this new BTS Fault. Toggling alarms
are suppressed until the toggling alarm condition is cleared. Severity of this BTS Fault
is the same as the severity of the toggling BTS Fault.
INSTRUCTIONS
1. Check the fault name of the toggling BTS fault.
2. Follow the instructions of the toggling BTS fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in alarm history
file, which can be downloaded using BTS Site Manager. The log file is available with
Snapshot."
FAULT NAME
Transport layer connection failure in S1 interface
FAULT ID
6202: EFaultId_S1SctpEndpointAl
MEANING
The transport path (SCTP) for connection to MME has broken. The reason for this might
be an unplugged cable to MME. No transport path available to pursue operation on the
faulty connection with the MME.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the alarm disappears:
1. Check the connection with MME-based on whether the S1 link is broken respectively.
2. Check if MME is operational.
If this fault happens right after a commissioning or a configuration change, verify the following
configuration data: IP address of the MME
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when
the fault has been corrected.
C2 General
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Flexi Multiradio BTS LTE Alarms
7657 BASE STATION CONNECTIVITY DEGRADED
Probable cause: Indeterminate
Event type: Communications
Default severity: Major
Meaning
A major fault (or faults) has occured in the base station interface. Check the reason for
the fault from the supplementary text field of the alarm.
Identifying additional information fields
1. rack (cabinet) number
2. shelf number
3. slot
4. type of unit
5. unit number
6. subunit number
Additional information fields
Destination IP address
Instructions
FAULT NAME
Transport layer connection failure in S1 interface
FAULT ID
6202: EFaultId_S1SctpEndpointAl
MEANING
The transport path (SCTP) for connection to MME has broken. The reason for this might
be an unplugged cable to MME. No transport path available to pursue operation on the
faulty connection with the MME.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the alarm disappears:
1. Check the connection with MME-based on whether the S1 link is broken respectively.
2. Check if MME is operational.
If this fault happens right after a commissioning or a configuration change, verify the following
configuration data: IP address of the MME
FAULT NAME
Transport layer connection failure in X2 interface
FAULT ID
6203: EFaultId_X2SctpEndpointAl
MEANING
The transport path (SCTP) for connection to an adjacent BTS has broken. The reason
for this might be an unplugged cable to the adjacent BTS. No transport path available to
pursue operation on the faulty connection with the adjacent BTS.
INSTRUCTIONS
Note: Perform the steps below in the listed order until the BTS Fault disappears:
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1.Check the connection with adjacent BTS based on whether the X2 link is broken
respectively.
2. Check if the adjacent BTS is operational.
If this fault happens right after a commissioning or a configuration change, verify the IP
address of the adjacent BTS.
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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Flexi Multiradio BTS LTE Alarms
7665 BASE STATION TRANSMISSION ALARM
Probable cause: Indeterminate
Event type: Quality of service
Default severity: Minor
Meaning
A transmission fault (or faults) has occurred in the BTS. This alarm is an encapsulation
alarm that is used to transfer the Flexi Transport Submodule (FTM) alarm data over the
BTS O&M connection through RNC and OMS to NetAct. Encapsulation is used because
the RNC alarm system cannot support the FTM alarms directly because of differences
in the alarm structure.
In NetAct and OMS this alarm is shown in opened format. This means that the alarm
number, alarm text and supplementary information are shown in original FTM format
and the alarm printout is thus different in NetAct compared to alarm listings in RNC MML
interface that shows these FTM alarms as instances of alarm number 7665.
Check the reason for the fault from the supplementary information fields and supplementary text field of
the alarm. The actual documentation for the encapsulated alarm
can be found in the BTS faults documents in LTE System Libraries.
The effect of the fault on the functioning of the network element depends on the fault
description. For more information, see base station fault descriptions in LTE System
Libraries.
Identifying additional information fields
1. probable cause reported by FTM
2. the managed object reported by FTM
3. alarm number reported by FTM. The FTM has reserved alarm numbers from space
C2 General
61000-61999
Instructions
FAULT NAME
$Protocol Timing source lost on unit $U [, interface $IF]
FAULT ID
61059: FTM_TIMING_SOURCE_LOS
MEANING
If two synchronization sources are configured in priority list for transport module and one
synchronization sources is unavailable. This can be the clock source with higher or
lower priority.
The Timing source lost on unit fault is masked by Synchronization lost fault. Meaning if
both synchronization sources fail Timing source lost fault are cleared and only Synchronization lost is
raised.
In the alarm:
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Protocol can be PDH, Timing over Packet (ToP) and Synchronuous Ethernet.
Unit number is always 1.
The interface value is optional:
- For PDH the value range depends on the hardware unit type: 1...4 (FTIB, FTLB); 1...8
(FTIF)
- For Synchonuous Ethernet the value range depends on the hardware unit type: 1...3
(FTIB, FTLB); 1..2 (FSMF); 1..4 (FTIF)
- It is not present for Timing over Packet.
INSTRUCTIONS
Use BTS Site Manager to check which interfaces have been configured as
synchronization sources.
For all interfaces, do as follows:
1. Check that the cables are connected to the correct connectors.
2. Check whether the interface at the far end is switched on.
3. Check whether there are active alarms at the far end. If there are,
follow the instructions on handling those alarms.
4. To verify that the hardware of the interface unit works correctly, connect
a loop cable and check whether the alarm disappears.
Monitor the received clock quality.
FAULT NAME
AIS on unit $U, interface $IF
FAULT ID
61151: FTM_AIS
MEANING
Alarm indication signal is received. This signal is generated by an intermediate PDH
device in the forward direction because it detects a problem in its receive signal.
All other transmission alarms related to this signal are suppressed.
Probable cause: There is a transmission problem somewhere in the intermediate
network and AIS is sent instead of user traffic.
C2 General
INSTRUCTIONS
Check the intermediate transmission network for alarms indicating the root cause and
follow the instructions for handling these alarms.
FAULT NAME
Automatic BTS Operator Certificate retrieval unsuccessful
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FAULT ID
61510: NO_CERTIFICATE
MEANING
A requested certificate could not be retrieved from the certificate authority (CA).
A requested certificate could not be renewed from the certificate authority (CA).
INSTRUCTIONS
Provide the certificate.
FAULT NAME
BFD Session down in egress direction for session $S
FAULT ID
61606: BFD DOWN Egress
MEANING
The alarm is raised if the alarm is enabled, the BFD state of the session is not AdminDown and the BFD
packet from the far end contains the diagnostic code = 'Control Detection Time Expired' AND no ingress
alarm is present.
INSTRUCTIONS
Check the BFD configuration at local end.
FAULT NAME
BFD Session down in ingress direction for session $S
FAULT ID
61605: BFD DOWN Ingress
MEANING
The alarm is raised if the alarm is enabled, the BFD state for the session is not AdminDown and
nevertheless no BFD packet is received at the local end during the detection
time.
INSTRUCTIONS
1. Check the network between both BFD peers for physical link failures or misconfigurations.
2. Check if the BFD functionality in the peer is switched on and that the configurations
of the BFD peers match.
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Base Station Alarms
FAULT NAME
BFD group $bfdGrpId down
FAULT ID
61022: BFD DOWN
MEANING
The alarm is raised if the BFD service is not available anymore on the BTS for a particular interface (plain
Ethernet or VLAN interface). In case only 1 BFD session is configured and activated for the interface, the
alarm is raised if BFD on this session fails in
either ingress or egress direction.
In case 2 BFD sessions are configured and activated for the interface, the alarm is
raised if there is a simultaneous BFD failure on both sessions. The BFD failure for each
session might be either on ingress or egress direction.
INSTRUCTIONS
1) Check if the far end has BFD switched on.
2) Check cabling and network connections to the far end.
FAULT NAME
BTS Trust Anchor due to expire
FAULT ID
61618: TRUST ANCHOR EXPIRING
MEANING
NE stores trust anchors for its own trust chain. When all trust anchors are about to expire
this alarm is sent.
INSTRUCTIONS
Update trust anchors.
FAULT NAME
BTS reset required
FAULT ID
61010: FTM_BTS_RESET_REQUIRED
MEANING
A change to the BTS IP settings has been received from the BTS Site Manager. To
activate the change, the BTS needs to be restarted.
INSTRUCTIONS
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Reset the BTS when all required BTS IP settings have been set.
FAULT NAME
CCM fault md $d level $ fault $f prio $p cause $c
FAULT ID
C2 General
61410: Ethernet OAM CCM fault
MEANING
The alarm is triggered whenever a service OAM error related to the transmission of Continuity Check
Messages (CCM) persists on a given Ethernet interface over the period
2,5 s.
The following alarms are defined:
1) XC_CCM_defect, priority 5 (highest priority): Maintenance Domain level mismatch or
Maintenance Association identification mismatch.
2) Error_CCM, priority 4: Maintenance End Point identifier unknown, wrong CCM interval.
3) Remote_CCM_Defect, priority 3: at least one of the remote peers does not receive
CCM from its peers, or local does not receive CCM from peer since 3.5 times the transmission period.
4) RDI_CCM, priority 1 (lowest priority): one remote peer detects RDI flag in the CCM
frames.
The alarm shall display the following information:
- Alarm Name
- Alarm Priority
- Alarm cause: if difference sources produce the same alarm
- MD name
- MD level at which the alarm was detected
INSTRUCTIONS
1) Check cabling.
2) Check CCM configuration at remote peer.
FAULT NAME
CRL update failure due to cause $C
FAULT ID
61074: CRL Update failure
MEANING
This alarm is raised if the BTS cannot update the Certificate Revocation List (CRL) for
one of the following reasons:
- the LDAP binding fails
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Base Station Alarms
- the LDAP search is empty (no CRL found)/the LDAP search contains more
than one entry
- the CRL signature validation fails
- the CRL file exceeds the BTS storage limit
- the BTS certificate is part of the CRL
- DNS resolution for the CRL distribution point fails
INSTRUCTIONS
Execute general configuration checks:
- Configuration of CMP server IP address and port and DNS server IP address.
- Configuration of routing entries towards remote peers.
- Configuration of IPSec policies towards remote peers.
Check remote peers and intermediate network elements interconnections.
C2 General
Check the LDAP connection towards the Certificate Revocation List server.
Check DNS names.
Check the size of the file at the Certificate Revocation List server.
FAULT NAME
Dead peer detected
FAULT ID
61030: FTM_DPD
MEANING
A dead peer was detected in one of the IPSec associations of the FTM.
It is possible that:
- a cable is cut or there is no cable connected to the interface
- the signal is excessively attenuated
- the port at the connected far end node is switched off
INSTRUCTIONS
1. Check that the cables are connected to the correct connectors.
2. Check that the interface at the far-end interface is switched on.
3. Check whether there are active alarms at the far end. If there are, follow the instructions for handling
those alarms.
FAULT NAME
EBER on unit $U, interface $IF
FAULT ID
61104: FTM_EBER
MEANING
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Excessive bit error rate. The measured bit error rate exceeds the threshold value of
BER-3 (10E-3).
Probable causes:
- the signal level is too low (optical connectors or cables are dirty, electrical connectors
or cables are corroded)
- the specified maximum length of the cable is exceeded
- the connector is not properly connected to the unit
- the receiver or the far end transmitter has failed
INSTRUCTIONS
1. Clean the cables and connectors.
2. Check that the connectors are properly connected to the unit.
3. Check that the cable connected to the interface in question is not damaged and is
within the specifications.
4. Follow the signal in the network and check whether any other alarms concerning the
fault are on (such as Laser End of Life). If they are, follow the instructions for handling
those alarms.
FAULT NAME
ETH AIS fault interface $IF level $l mac addr $x
C2 General
FAULT ID
61411: Ethernet OAM ETH_AIS_fault
MEANING
A Maintenance Endpoint (MEP) received a valid ETH-AIS frame.
The alarm shows the following information:
- Source MAC address of the MEP.
Additional information shows the following:
- Maintenance Interface
- Maintenance Association ID
- Maintenance Domain name
- Maintenance Domain level at which the alarm was detected
INSTRUCTIONS
1) Check cabling.
2) Check configuration at remote peer.
FAULT NAME
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FTM Toggling <Fault name>
FAULT ID
61619: FTM_FAULT_TOGGLING
MEANING
FTM Fault, for which fault name is mentioned in the Fault name -field, is toggling
in the FTM. Toggling fault condition is informed to user with this new
FTM Fault. Toggling faults are suppressed until the toggling alarm condition
is cleared. Severity of this FTM Fault is the same than the severity of
the toggling FTM Fault.
INSTRUCTIONS
1. Check the fault name of the toggling FTM fault from the Fault name of
this fault.
2. Follow the instructions of the toggling FTM fault to clear the problem.
Note! Detailed information about the toggling frequency can be found in
alarm history file, which can be downloaded using BTS Site Manager. The
log file is available with Snapshot.
FAULT NAME
FTM booted at $date due to $RCause
FAULT ID
61006: FTM_RESET
MEANING
The transport part of the BTS has been reset at the date and time given in the notification. The cause for
the reset can be one of the following:
"power-on reset": Cold start
"watchdog reset": System overload
"startup failure": Failure during startup
C2 General
"software failure": Software failure
"management reset": Reset triggered by management interface
"fallback":
Fallback executed
INSTRUCTIONS
No actions are required
FAULT NAME
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Five failed logins to FTM due to wrong user name or password
FAULT ID
61500: FTM_SECURITY
MEANING
Five consecutive failed login attempts to the FTM have been performed.
INSTRUCTIONS
Check your username and password.
FAULT NAME
LOF on unit $U, interface $IF
FAULT ID
61028: FTM_LOF
MEANING
Loss of frame. It is not possible to carry traffic on the interface referenced in the alarm
text. All other transmission alarms related to this signal are suppressed.
Probable cause for E1 interfaces: The interface at the far end is not configured to be a
framed E1 interface.
Probable cause for T1 interfaces: The interface at the far end is not configured to be a
T1 interface.
INSTRUCTIONS
E1 interfaces: Check that the interface type of the far-end interface is also configured to
be a framed E1 interface. If this is not the case, reconfigure the interfaces so that they
match each other.
JT1 interfaces: Check that the interface type of the far-end interface is also configured
to be a JT1 interface. If this is not the case, reconfigure the interfaces so that they match
each other.
FAULT NAME
LOMF on slot $U, interface $IF
FAULT ID
61150: FTM_LOMF
MEANING
Loss of multiframe. The interface referenced in the alarm text has lost the multiframe
alignment.
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Base Station Alarms
Probable cause: the interface type has not been configured to meet the framing of the
interface at the far end. For E1 interfaces, the configuration of the far-end node should
be E1 Multiframe.
INSTRUCTIONS
Check that the configured interface type matches the configured interface type of the far
end. If this is the case, the problem is somewhere in the transmission network.
FAULT NAME
LOS on unit $U, [Ethernet] interface $IF
FAULT ID
61029: FTM_LOS
MEANING
No signal is received on the interface referenced in the alarm text. All other transmission
alarms related to this signal are suppressed.
Probable causes for Ethernet interfaces:
- a cable is cut or there is no cable connected to the interface
- the electrical signal is excessively attenuated
- the port at the connected far end node is switched off
INSTRUCTIONS
1. Check that the cables are connected to the correct connectors.
2. Check that the interface at the far-end interface is switched on.
3. Check whether there are active alarms at the far end. If there are, follow the instructions for handling
those alarms.
4. To verify that the hardware of the interface unit works correctly, connect a loop cable
and check whether the alarm disappears.
FAULT NAME
License missing for feature $feature on interface $if
FAULT ID
61400: FTM_LICENSE_MISSING
MEANING
The feature referenced in the alarm text has been configured without installing a valid
license.
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Probable cause: A valid license that would allow the operation of the feature is not available in the WBTS.
C2 General
This BTS fault can be displayed in the followings variants:
License Missing for additional 2 E1, T1 interface
License Missing for Timing Over Packet
INSTRUCTIONS
Download a valid license to the WBTS.
FAULT NAME
Link OAM critical link event $E on unit $U, interface $F
FAULT ID
61077: Link OAM critical link event alarm
MEANING
A Link OAM PDU containing a critical link event flag was received on the Ethernet interface. The alarm is
raised with the first detection of the flag.
The following critical link events are possible:
- Critical Event: either an Errored Symbol Period Event, an Errored Frame Event an
Errored Frame Period Event or an Errored Frame Seconds Summary Event was
detected.
- Dying Gasp: either the local or the remote peer has a fatal error and is about to restart.
- Link Fault: the local peer has detected a physical link fault in receiving direction, e.g. a
LOS.
INSTRUCTIONS
1)Inspect details of the type of the critical event through online configuration management.
2)Check Link OAM state information of the interface.
3)Check cabling and network connections to the far end.
4)Check Ethernet interface configuration at local and remote side.
5)Insert a Link OAM loopback.
FAULT NAME
Link OAM link lost on unit $U, interface $F
FAULT ID
61076: Link OAM link lost alarm
MEANING
On an interface for which the Link OAM functionality was switched on, no Link OAM
PDUs were received during the period specified in configuration parameter linkLostTime
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Flexi Multiradio BTS LTE Alarms
Base Station Alarms
(2..10 seconds, step 1 second).
INSTRUCTIONS
1)Check cabling and network connections to the far end.
2)Check Link OAM event- and Link OAM state information.
3)Check Ethernet interface configuration at local and remote side.
4)Insert a Link OAM loopback.
FAULT NAME
Link OAM loopback inserted on unit $U, interface $F by $P peer
FAULT ID
C2 General
61075: Link OAM loopback alarm
MEANING
A loopback is requested for an Ethernet interface either locally at the BTS or the Link
OAM client of the BTS is set into loopback mode by the remote Link OAM peer.
INSTRUCTIONS
None.
FAULT NAME
Missing or non-compliant SFP module on unit $U, interface $I
FAULT ID
61050: FTM_SFP
MEANING
The small form-factor pluggable (SFP) module detected in the interface connector does
not comply with security requirements. It does not have a class 1 laser.
INSTRUCTIONS
Insert an SFP module with the correct laser type (class 1) to the Gigabit Ethernet interface of the unit.
FAULT NAME
NTP server is not accessible
FAULT ID
61613: NTP_SERVER_UNREACHABLE
MEANING
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Base Station Alarms
Flexi Multiradio BTS LTE Alarms
BTS shall report BTS alarm if NTP server is not accessible.
INSTRUCTIONS
check the connectivity to NTP server
check the NTP server configuration at BTS.
FAULT NAME
Poor Quality SSM on unit $UID $IF
FAULT ID
61624: SSM_POORQUALITY
MEANING
This alarm is raised when the received SSM indicates lower clock quality (e.g. "do not
use" or "EEC") than required.
INSTRUCTIONS
FAULT NAME
RDI on unit $U, interface $IF
FAULT ID
61152: FTM_RDI
MEANING
Remote defect indication. It is sent by the intermediate or the far end equipment
because it detects a serious fault in the received signal.
Probable cause: The far end has a LOS, LOF or AIS alarm on its receiving interface.
C2 General
INSTRUCTIONS
1. Check the intermediate transmission network for alarms indicating the root cause and
follow the instructions for handling these alarms.
2. To check the transmit hardware, connect a loop cable and check that no alarms
appear for this interface.
FAULT NAME
Routing misconfiguration for application $a
FAULT ID
61073: ROUTING_MISCONFIGURATION
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Flexi Multiradio BTS LTE Alarms
Base Station Alarms
MEANING
A routing misconfiguration was detected. A packet was sent over an IP interface for
which it was not intended, as configured in the VLAN traffic path map. For example,
user-plane packet was sent over an interface that is intended for control plane traffic.
Since the interface selection is based on the routing table entries, a misconfiguration of
the routing table is suspected.
INSTRUCTIONS
Correct the routing table or change the settings of the VLAN traffic path map.
FAULT NAME
SSM Timed Out on unit $UID $IF
FAULT ID
61623: SSM_TIMEOUT
MEANING
In case the incoming SSM is not anymore received for a certain time period (configured
via 'ssmTimeout' parameter) this an alarm is raised.
INSTRUCTIONS
FAULT NAME
Synchronization lost
FAULT ID
61058: FTM_SYNC_LOSS
MEANING
All transport related timing sources are lost at transport module. All configured synchronization sources
from the configured priority list are unavailable.
Probable cause: The transmission links selected for clock source are faulty. The reason
can be alarms on the interfaces (for example, LOS).
The Synchronization lost fault is masking Timing source lost on unit fault.
Note 1: This fault/alarm doesn't indicate that eNb is running in hold-over mode; please
refer for hold-over indication to fault/alarm BTS Reference clock missing (1816)
INSTRUCTIONS
Use the BTS Site Manager to check which interfaces have been configured as synchronization sources.
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C2 General
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Base Station Alarms
Flexi Multiradio BTS LTE Alarms
1. Check that the cables are connected to the correct connectors.
2. Check whether the interface at the far end is switched on.
3. Check whether there are active alarms at the far end. If there are, follow the instructions on handling
those alarms.
4. To verify that the hardware of the interface unit works correctly, connect a loop cable
and check whether the alarm disappears.
FAULT NAME
TWAMP PLR Threshold Crossed
FAULT ID
61611: PLR_THRESHOLD_CROSSED
MEANING
The PLR threshold alarm shall be sent in case the configured value of PLR is exceeded.
INSTRUCTIONS
FAULT NAME
TWAMP RTT Threshold Crossed
FAULT ID
61610: RTT_THRESHOLD_CROSSED
MEANING
The RTT threshold alarm shall be sent in case the configured value of RTT is exceeded.
INSTRUCTIONS
FAULT NAME
ToP master service $IP unusable
FAULT ID
61631: TOP_MASTER_UNUSABLE
MEANING
The reference clock monitoring has detected a loss of ToP reference clock signal
received from the master clock behind $IP.
'- The eNB does not receive a reply from ToP Master within a certain time (5 sec) upon
it has sent a sync request message
- The eNB receives from ToP Master a granted message rates (sync message rate,
delay message rate), that doesn't match the requested rate by eNB
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DN0951924
Flexi Multiradio BTS LTE Alarms
Base Station Alarms
C2 General
INSTRUCTIONS
Check the cable connectivity.
Check the TOP configuration.
FAULT NAME
Transport module missing
FAULT ID
61201: TRANSPORT_MODULE_MISSING
MEANING
Unit missing. The slot has been configured to hold a unit but the plug-in
unit is not physically present in the slot.
Probable causes:
- the unit has been configured but not detected
- the unit is broken and therefore not detected
INSTRUCTIONS
1. Re-Plug in the expected transport unit referenced in the alarm text.
2. In case there is a unit present in the slot, remove it from the slot
and plug it back in. If the unit is still not recognised and the alarm
remains, replace the faulty unit with a new one.
FAULT NAME
Vendor BTS certificate due to expire
FAULT ID
61616: VENDOR_CERTIFICATE_EXPIRING
MEANING
The BTS raises a "Vendor BTS certificate due to expire" alarm when the Vendor BTS
certificate is about to expire.
The period of notificaton in advance is configurable and the same as for CA certificate
expiry described in WBTS_SEC_46333
1 day ... 4999 days with default 1825 days.
INSTRUCTIONS
Check that the vendor BTS certificate expiry date and renew it.
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Base Station Alarms
Flexi Multiradio BTS LTE Alarms
Clearing
Do not cancel the alarm. The system automatically cancels the alarm when the fault has
been corrected.
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C2 General