Alm Fleximrlbts Faults

Nokia Siemens Networks LTE Radio Access, Rel. RL20, Operating Documentation, Issue 02

Flexi Multiradio Base Station LTE Faults DN0980455 Issue 02A Approval Date 2011-03-25

Confidential

Flexi Multiradio Base Station LTE Faults

The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation. The information or statements given in this documentation concerning the suitability, capacity, or performance of the mentioned hardware or software products are given "as is" and all liability arising in connection with such hardware or software products shall be defined conclusively and finally in a separate agreement between Nokia Siemens Networks and the customer. However, Nokia Siemens Networks has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions. Nokia Siemens Networks will, if deemed necessary by Nokia Siemens Networks, explain issues which may not be covered by the document. Nokia Siemens Networks will correct errors in this documentation as soon as possible. IN NO EVENT WILL Nokia Siemens Networks BE LIABLE FOR ERRORS IN THIS DOCUMENTATION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL OR ANY LOSSES, SUCH AS BUT NOT LIMITED TO LOSS OF PROFIT, REVENUE, BUSINESS INTERRUPTION, BUSINESS OPPORTUNITY OR DATA,THAT MAY ARISE FROM THE USE OF THIS DOCUMENT OR THE INFORMATION IN IT. This documentation and the product it describes are considered protected by copyrights and other intellectual property rights according to the applicable laws. The wave logo is a trademark of Nokia Siemens Networks Oy. Nokia is a registered trademark of Nokia Corporation. Siemens is a registered trademark of Siemens AG. Other product names mentioned in this document may be trademarks of their respective owners, and they are mentioned for identification purposes only. Copyright © Nokia Siemens Networks 2011. All rights reserved

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Important Notice on Product Safety This product may present safety risks due to laser, electricity, heat, and other sources of danger. Only trained and qualified personnel may install, operate, maintain or otherwise handle this product and only after having carefully read the safety information applicable to this product. The safety information is provided in the Safety Information section in the “Legal, Safety and Environmental Information” part of this document or documentation set.

The same text in German:

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Wichtiger Hinweis zur Produktsicherheit Von diesem Produkt können Gefahren durch Laser, Elektrizität, Hitzeentwicklung oder andere Gefahrenquellen ausgehen. Installation, Betrieb, Wartung und sonstige Handhabung des Produktes darf nur durch geschultes und qualifiziertes Personal unter Beachtung der anwendbaren Sicherheitsanforderungen erfolgen. Die Sicherheitsanforderungen finden Sie unter „Sicherheitshinweise“ im Teil „Legal, Safety and Environmental Information“ dieses Dokuments oder dieses Dokumentationssatzes.

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Id:0900d80580863d12 Confidential

DN0980455 Issue 02A


Table of contents This document has 104 pages. Summary of changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DN0980455

1

Overview of Flexi Multiradio BTS LTE Faults . . . . . . . . . . . . . . . . . . . . . 9

2

Flexi Multiradio BTS LTE fault and alarm handling . . . . . . . . . . . . . . . . 10

3

BTS fault table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37

Flexi Multiradio BTS LTE faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 61006 The FTM booted at $date due to $RCause . . . . . . . . . . . . . . . . 13 61010 BTS reset required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 61028 LOF on unit $U, interface $IF . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 61029 LOS on unit $U, [ethernet] interface $IF . . . . . . . . . . . . . . . . . . . 16 61030 Dead Peer Detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 61050 Missing or non-compliant SFP module on unit $U, interface $I . 18 61058 Synchronization lost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 61059 $Protocol Timing source lost on unit $U [, interface $IF] . . . . . . 20 61073 Routing misconfiguration for application $a . . . . . . . . . . . . . . . . 22 61074 CRL Update failure due to cause $C . . . . . . . . . . . . . . . . . . . . . 23 61075 Link OAM loopback inserted on unit $U, interface $F by $P peer 24 61076 Link OAM link lost on unit $U, interface $F. . . . . . . . . . . . . . . . . 25 61077 Link OAM critical link event $E on unit $U, interface $F . . . . . . . 26 61104 EBER on unit $U, interface $IF. . . . . . . . . . . . . . . . . . . . . . . . . . 27 61150 LOMF on slot $U, interface $IF. . . . . . . . . . . . . . . . . . . . . . . . . . 28 61151 AIS on unit $U, interface $IF. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 61152 RDI on unit $U, interface $IF . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 61400 License missing for feature $feature on interface $if . . . . . . . . . 31 61410 CCM fault md $d level $ fault $f prio $p cause $c . . . . . . . . . . . 32 61411 ETH AIS fault interface $IF assoc $a md $d level $l mac addr $x33 61500 Five failed logins to FTM due to wrong user name or password 34 61510 Automatic BTS Operator Certificate retrieval unsuccessful . . . . 35 61605 BFD Session down in ingress direction for session $S. . . . . . . . 36 61606 BFD Session down in egress direction for session $S . . . . . . . . 37 # autonomous reset as recovery action . . . . . . . . . . . . . . . . . . . . . . . . . 38 [User defined] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Antenna Line Device failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Antenna Line failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Antenna Line Operation Degraded . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Automatic neighbor relation failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Baseband Bus failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 BTS Blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 BTS internal SW management problem . . . . . . . . . . . . . . . . . . . . . . . . 48 BTS is uncommissioned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 BTS Master Clock tuning failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 BTS reference clock missing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 BTS reset required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56


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4.38 4.39 4.40 4.41 4.42 4.43 4.44 4.45 4.46 4.47 4.48 4.49 4.50 4.51 4.52 4.53 4.54 4.55 4.56 4.57 4.58 4.59 4.60 4.61 4.62 4.63 4.64 4.65 4.66 4.67 4.68 4.69 4.70 4.71 4.72 4.73 4.74 4.75 4.76 4.77 4.78 4.79

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BTS time not corrected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Cell blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Commissioning error: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Configuration error: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Failure in connection between BTS and iOMS or 3rd party tool . . . . . . . 62 Failure in optical RP3 interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Failure in trace session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Fan failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 FPGA SW update failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 GPS Receiver alarm: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 GTP-U Path Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Heating element not working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Incompatible SW version detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Mains power break, running Battery Backup . . . . . . . . . . . . . . . . . . . . . 74 Mast Head Amplifier fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 No connection to Flexi transport submodule. . . . . . . . . . . . . . . . . . . . . . 76 Parallel RP3-01 link length mismatch . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Radio resources switched off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 RET Antenna control failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 RF Loss of secondary optical interface. . . . . . . . . . . . . . . . . . . . . . . . . . 80 RF Module blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 RF Module failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 RF Module overvoltage protection faulty . . . . . . . . . . . . . . . . . . . . . . . . 83 S1 interface recovery failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 S1 interface setup failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 S1 SCTP path failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 System information broadcast parameters overflow . . . . . . . . . . . . . . . . 87 System Module failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Technical log buffer freezing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Temperature alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Temperature too low (Heating ongoing) . . . . . . . . . . . . . . . . . . . . . . . . . 91 Toggling: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Transport layer connection failure in S1 interface. . . . . . . . . . . . . . . . . . 94 Transport layer connection failure in S1/X2 interface . . . . . . . . . . . . . . . 95 Transport layer connection failure in X2 interface. . . . . . . . . . . . . . . . . . 96 TX failure in MIMO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Unit blocked . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 VSWR alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 VSWR alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 X2 interface recovery failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 X2 interface setup failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 X2 neighbor cell configuration inconsistency . . . . . . . . . . . . . . . . . . . . 103


DN0980455


List of tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 Table 40 Table 41 Table 42 Table 43 Table 44 Table 45

DN0980455

Description of the fields in the fault table . . . . . . . . . . . . . . . . . . . . . . . ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... ....................................................... .......................................................


11 13 14 15 16 17 18 19 20 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 45 47 48 49 50 52 56 57 58 59 60 62 63 65

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Table 46 Table 47 Table 48 Table 49 Table 50 Table 51 Table 52 Table 53 Table 54 Table 55 Table 56 Table 57 Table 58 Table 59 Table 60 Table 61 Table 62 Table 63 Table 64 Table 65 Table 66 Table 67 Table 68 Table 69 Table 70 Table 71 Table 72 Table 73 Table 74 Table 75 Table 76 Table 77 Table 78 Table 79 Table 80

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..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... ..... .....

....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......

...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......


...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......

....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......

...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......

....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... ....... .......

...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......

. . . . . . 67 . . . . . . 68 . . . . . . 69 . . . . . . 71 . . . . . . 72 . . . . . . 73 . . . . . . 74 . . . . . . 75 . . . . . . 76 . . . . . . 77 . . . . . . 78 . . . . . . 79 . . . . . . 80 . . . . . . 81 . . . . . . 82 . . . . . . 83 . . . . . . 84 . . . . . . 85 . . . . . . 86 . . . . . . 87 . . . . . . 88 . . . . . . 89 . . . . . . 90 . . . . . . 91 . . . . . . 92 . . . . . . 94 . . . . . . 95 . . . . . . 96 . . . . . . 97 . . . . . . 98 . . . . . . 99 . . . . . 100 . . . . . 101 . . . . . 102 . . . . . 103

DN0980455


Summary of changes

Summary of changes Changes between issues 02 (2010-12-16, LTE, Rel. RL20) and 02A (2011-03-25, LTE, Rel. RL20) New faults: – Automatic BTS Operator Certificate retrieval unsuccessful – CCM fault md $d level $ fault $f prio $p cause $c – ETH AIS fault interface $IF assoc $a md $d level $l mac addr $x Updated faults: – – – – –

BTS internal SW management problem BTS reference clock missing BTS reset required Transport layer connection failure in S1/X2 interface RF Loss of secondary optical interface

Changes between issues 01 (2010-10-28, LTE, Rel. RL10) and 02 (2010-12-16, LTE, Rel. RL20) New faults: – – – – – – – – – – – – – – –

Antenna Line Operation Degraded BFD Session down in egress direction for session $S BFD Session down in ingress direction for session $S Failure in trace session Link OAM critical link event $E on unit $U, interface $F Link OAM link lost on unit $U, interface $F Link OAM loopback inserted on unit $U, interface $F by $P peer No module fan detected Parallel RP3-01 link length mismatch RF Module blocked RF Module overvoltage protection faulty S1 SCTP path failure System information broadcast parameters overflow Transport layer connection failure in S1 interface Transport layer connection failure in X2 interface

Updated faults: – – – – – – – – – – –

DN0980455

Antenna Line failure CRL Update failure due to cause $C Dead Peer Detected Failure in connection between BTS and iOMS or 3rd party tool Failure in optical RP3 interface Fan failure GTP-U Path Failure Radio resources switched off RET Antenna control failure Transport layer connection failure in S1/X2 interface TX failure in MIMO

Id:0900d80580866506 Confidential

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Summary of changes


– X2 neighbor cell configuration inconsistency

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DN0980455


Overview of Flexi Multiradio BTS LTE Faults

1 Overview of Flexi Multiradio BTS LTE Faults This document describes fault and alarm handling of the Flexi Multiradio Base Station LTE. The base station software uses these faults and alarms as a basis for internal diagnosis and fault reporting to the Operations Support System (OSS) and BTS Site Manager. For troubleshooting instructions, see Flexi Multiradio BTS LTE Troubleshooting.

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Flexi Multiradio BTS LTE fault and alarm handling


2 Flexi Multiradio BTS LTE fault and alarm handling Base station (BTS) alarm handling is based on unit or module state information. It prevents the sending of unnecessary alarms by checking and updating unit states. Fault messages come either from hardware devices or software components. The faults are system or hardware specific. The Fault Diagnosis System creates upper network alarms, which are based on an analysis of the faults, and sends them to the BTS Site Manager. In addition NetAct is used for handling the BTS alarms. The BTS is able to maintain alarm handling after it has been commissioned and is in a configured state. During the start-up, the BTS waits for the real-time clock from the Network Time Protocol (NTP) server, and the fault diagnosis starts after the time has been set or a time-out has been detected. If the BTS is unable to set the time using the NTP server, the default time (1.1.2004) will be used. Flexi Multiradio BTS LTE transmission alarms In Flexi Multiradio BTS LTE, transmission alarms are reported as Base station transmission alarms (7665) towards OMS or NetAct. In Flexi Multiradio BTS LTE, transmission equipment uses the base station interface. Therefore, retrieval of the alarm information will be mapped either in the OMS or in NetAct to distinguish between the alarms by using the fault ID. Instructions for solving problems When starting to solve a problem, first refer to the instructions given in the individual alarm descriptions. Verify the configuration of a BTS by checking the commissioning, cabling and correct installation of the modules at the BTS. Make sure the environment does not cause the fault. If an active alarm is a 'Start' alarm, a unit block/unblock (if supported by the unit) or a site reset is required to cancel it. If the site reset or unit block/unblock does not help, replace the faulty unit or module. See the fields 'Fault source' and 'Instructions' in the corresponding alarm description. Blocking and unblocking The 'Cancel' alarms are always sent to hosts (LTE BTS Site Manager). When the unit or cell is in a blocked state, the 'Start' alarms are only sent to LTE BTS Site Manager. When a unit or cell is unblocked, all the active alarms related to the unblocked unit, module, or cell are automatically sent to the hosts.

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DN0980455


BTS fault table

3 BTS fault table Fault name:

The name of the fault.

Used in products:

The name of the product in question.

Detecting unit:

The unit that detects the fault.

Source:

The equipment suspected to be faulty (sub-unit in parentheses). Note that sometimes the actual source of the fault is different than the one that detects the fault.

Meaning:

A description of the fault situation.

State:

The options are: Event (Transient or Distur)

• • • •

Notification type fault 'Event' fault is not cancelled, because it is never active No recovery actions Event type fault is shown in the BTS Site Manager as 'Transient'

Start

• • •

A fault situation The fault is not automatically cleared (without manual operation and maintenance work), even though the problem has been solved, but requires at least blocking/unblocking the unit or site reset. Recovery actions depend on the reported severity

Start/Cancel

• • Unit status:

Faults can be in a start or cancel state The fault is automatically cleared when the problem has been solved

The options are: Out of order

The unit does not work

Degraded

The main functions of the unit work, but not all

Working

All functions are working, but some trouble has been notified

Info

Status change information

Unit status attributes:

Lists the statuses per product, when the status varies depending on the product.

Effect:

A description of how this fault affects the operations of this unit, and how it affects the operations of other units. The following questions are considered: Does the status of the unit or its sub-units have any effect on the interpretation of the fault? Does the fault have an effect on other active faults?

Table 1

DN0980455

Description of the fields in the fault table


11

BTS fault table

Reported alarms:


7650 BASE STATION FAULTY

• • •

Start, disables all cells Cancel, causes a site reset No new 7651, 7653 or 7654 alarms are reported when 7650 is active

7651 BASE STATION OPERATION DEGRADED

•

There is no limit to how many 7651 alarms can be active at the same time

7652 BASE STATION NOTIFICATION

•


7653 CELL FAULTY

• •

Start, the affected cell state is set disabled Cancel, the affected cell state is set enabled

7654 CELL OPERATION DEGRADED

•


7655 CELL NOTIFICATION

•


7665 BASE STATION TRANSMISSION ALARM

• •

In case of faulty transmission equipment or transmission software, this alarm is reported towards the OMS or NetAct. Transmission alarms do not have dependencies to other BTS alarms.

7660 BASE STATION LICENCE EXPIRED

•

Licence alarms do not have dependencies to other BTS alarms.

7661 BASE STATION LICENCE NOTIFICATION

•

Licence alarms do not have dependencies to other BTS alarms.

Reported alarms description:

If there are several reported alarms, explains the situation in which the given alarm is reported.

LED display:

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

Major alarm

Blinking red

Minor alarm

Stable yellow

Unit in standby state or unit blocking

Blinking yellow

Unit in self-heating state or software downloading

Stable green

Unit on and working

Alternating red and green Instructions:

Table 1

12

MHA faulty

Describes the actions required to clear the fault.

Description of the fields in the fault table (Cont.)


DN0980455


Flexi Multiradio BTS LTE faults

4 Flexi Multiradio BTS LTE faults 4.1

61006 The FTM booted at $date due to $RCause Fault name

The FTM booted at $date due to $RCause

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

FTM

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 "software failure": Software failure "management reset": Reset triggered by management interface "fallback": Fallback executed

State

Transient

Unit status

Minor

Unit status attributes Effect

The fault has no further consequences.

Reported alarms


LED display

N/A

Instructions

No actions are required

Table 2

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13


4.2

61010 BTS reset required Fault name

BTS reset required

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

FTM

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.

State

Start

Unit status

Warning


The BTS does not take the new settings into use before a reset.

Reported alarms


LED display

N/A

Instructions

Reset the BTS when all required BTS IP settings have been set.

Table 3

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DN0980455


4.3

61028 LOF on unit $U, interface $IF Fault name

LOF on unit $U, interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT

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.

State

Start / Cancel

Unit status

Critical


Possible impact on the connections over this interface: - no calls are possible - loss of remote management access to other network elements in the RAN - loss of synchronization if the interface is used as synchronization source.

Reported alarms


LED display

Stable red

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.

Table 4

DN0980455

Id:0900d805808662ac Confidential

15


4.4

61029 LOS on unit $U, [ethernet] interface $IF Fault name

LOS on unit $U, [ethernet] interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

ETHLK

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

State

Start / Cancel

Unit status

Critical


Possible impact on the connections over this interface: - no calls are possible anymore - loss of remote management access to other network elements in the RAN - loss of synchronization if the interface is used as a synchronization source

Reported alarms


LED display

Stable red

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.

Table 5

16

Id:0900d805808662ab Confidential

DN0980455


4.5

61030 Dead Peer Detected Fault name

Dead Peer Detected

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

IKESA

Meaning

A dead peer was detected in one of the IPsec associations of the FTM. Possibly - 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

State

Start / Cancel

Unit status

Major


Possible effects: - no calls are possible anymore - loss of remote management access to other network elements in the RAN - loss of synchronisation if the interface is used as a synchronisation source.

Reported alarms


LED display

Stable yellow

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.

Table 6

DN0980455


17


4.6

61050 Missing or non-compliant SFP module on unit $U, interface $I Fault name

Missing or non-compliant SFP module on unit $U, interface $I

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

ETHLK

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.

State

Start / Cancel

Unit status

Critical


The interface cannot be used for transmission.

Reported alarms


LED display

Stable red

Instructions

Insert an SFP module with the correct laser type (class 1) to the Gigabit Ethernet interface of the unit.

Table 7

18

Id:0900d8058086639f Confidential

DN0980455


4.7

61058 Synchronization lost Fault name

Synchronization lost

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

STPG

Meaning

Primary and secondary timing source lost. The LTE is running on internal clock or in hold-over mode and no timing signal is sent. The first and second synchronization sources from the configured priority list are unavailable. On failure, the LTE switches automatically to the next clock source in the priority list. Probable cause: The transmission links selected for clock source are faulty. The reason can be alarms on the interfaces (for example, LOS).

State

Start / Cancel

Unit status

Major


Possible impact: The BTS is not synchronized to the network anymore.

Reported alarms


LED display

Stable red

Instructions

Use the BTS Site Manager to check which interfaces have been configured as synchronization sources. 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.

Table 8

DN0980455

Id:0900d805808662b1 Confidential

19


4.8

61059 $Protocol Timing source lost on unit $U [, interface $IF] Fault name

$Protocol Timing source lost on unit $U [, interface $IF]

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

STPG

Meaning

One of the synchronisation sources in the configured priority list is unavailable. This can be the primary or the secondary clock source. In the alarm: 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..16 - For Synchonuous Ethernet the value range = 1..3 - It is not present for Timing over Packet.

State

Start / Cancel

Unit status

Minor


The BTS may have to use a synchronization interface that has a lower clock quality: if the primary clock source has been lost, the BTS switches automatically to the secondary clock source. If both the primary and the secondary clock sources are lost, the BTS switches to the internal clock.

Reported alarms


LED display

Blinking red

Table 9

20


DN0980455


Instructions

Table 9

DN0980455

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. (Cont.)


21


4.9

61073 Routing misconfiguration for application $a Fault name

Routing misconfiguration for application $a

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

IEIF and IVIF

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 examplea userplane 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.

State

Start / Cancel

Unit status

Major


A packet might not arrive at its destination or it might arrive delayed at its destination or other traffic might arrive delayed at its destination, if the misrouted packet is now scheduled with higher priority as to be expected without the misconfiguration.

Reported alarms


LED display

None

Instructions

Correct the routing table or change the settings of the VLAN traffic path map.

Table 10

22


DN0980455


4.10

61074 CRL Update failure due to cause $C Fault name

CRL Update failure due to cause $C

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

CERTH

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 or - the LDAP search is emtpy (no CRL found) / the LDAP search contains more then one entry or - the CRL signature validation fails or - the CRL file exceeds the BTS storage limit or - the BTS certificate is part of the CRL or - DNS resolution for the CRL distribution point fails.

State

Start / Cancel

Unit status

Minor


The Certificate Revocation List could not be updated. New revoked certificates remain unknown to the BTS.

Reported alarms


LED display

None

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. 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.

Table 11

DN0980455


23


4.11

61075 Link OAM loopback inserted on unit $U, interface $F by $P peer Fault name

Link OAM loopback inserted on unit $U, interface $F by $P peer

Used in products

LTE

Detecting unit

FTIB, FTFB, FTLB

Source

ETHLK

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.

State

Start / Cancel

Unit status

Major


Normal traffic is interrupted. Only loopback OAM frames are transmitted and received over the interface. If the test frame generator is switched on, test frames are transmitted.

Reported alarms


LED display

None

Instructions

None.

Table 12

24


DN0980455


4.12

61076 Link OAM link lost on unit $U, interface $F Fault name

Link OAM link lost on unit $U, interface $F

Used in products

LTE

Detecting unit

FTIB, FTFB, FTLB

Source

ETHLK

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 (2..10 seconds, step 1 second).

State

Start / Cancel

Unit status

Major


The ethernet interface might be out of order or the remote peer might be out of order. Traffic might get lost.

Reported alarms LED display

None

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.

Table 13

DN0980455


25


4.13

61077 Link OAM critical link event $E on unit $U, interface $F Fault name

Link OAM critical link event $E on unit $U, interface $F

Used in products

LTE

Detecting unit

FTIB, FTLB, FTFB

Source

ETHLK

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.

State

Start / Cancel

Unit status

Major


The ethernet interface is defected or the remote peer is defective. Traffic might get lost.

Reported alarms


LED display

None

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.

Table 14

26


DN0980455


4.14

61104 EBER on unit $U, interface $IF Fault name

EBER on unit $U, interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT

Meaning

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

State

Start / Cancel

Unit status

Major


Possible impact: - slow management access to the WBTS and other network elements in the RAN - poor voice quality and data performance - if this interface is part of an IMA group, this IMA link is to be temporarily suspended from operation

Reported alarms


LED display

Stable red

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.

Table 15

DN0980455


27


4.15

61150 LOMF on slot $U, interface $IF Fault name

LOMF on slot $U, interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT

Meaning

Loss of multiframe. The interface referenced in the alarm text has lost the multiframe alignment. 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.

State

Start / Cancel

Unit status

Major


Possible impact: the performance management data collected on this interface becomes invalid.

Reported alarms


LED display

Stable red

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.

Table 16

28

Id:0900d805808662ae Confidential

DN0980455


4.16

61151 AIS on unit $U, interface $IF Fault name

AIS on unit $U, interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT

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.

State

Start / Cancel

Unit status

Major


Possible impact on the connections over the interface in question: - no calls are possible - loss of remote management access to other network elements in the RAN

Reported alarms


LED display

Stable red

Instructions

Check the intermediate transmission network for alarms indicating the root cause and follow the instructions for handling these alarms.

Table 17

DN0980455

Id:0900d805808662ad Confidential

29


4.17

61152 RDI on unit $U, interface $IF Fault name

RDI on unit $U, interface $IF

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT

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.

State

Start / Cancel

Unit status

Major


Possible impact on the connections over this interface: - no calls are possible - loss of remote management access to other network elements in the RAN - loss of synchronization if the interface is used as a synchronization source

Reported alarms


LED display

Stable red

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.

Table 18

30

Id:0900d805808662af Confidential

DN0980455


4.18

61400 License missing for feature $feature on interface $if Fault name

License missing for feature $feature on interface $if

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

PPTT, FTM

Meaning

The feature referenced in the alarm text has been configured without installing a valid license. Probable cause: A valid license that would allow the operation of the feature is not available in the WBTS. This BTS fault can be displayed in the followings variants: License Missing for additional 2 E1, T1 interface License Missing for Timing Over Packet

State

Start / Cancel

Unit status

Major


Possible impacts: PDH clock is not to be operable. TimeOverPacket clock is not to be operable.

Reported alarms


LED display

Stable red

Instructions

Download a valid license to the WBTS.

Table 19

DN0980455

Id:0900d8058086639c Confidential

31


4.19

61410 CCM fault md $d level $ fault $f prio $p cause $c Fault name

CCM fault md $d level $ fault $f prio $p cause $c

Used in products

LTE

Detecting unit

FTIB, FTFB, FTLB

Source

OAMMEP

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): Maintenace 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

State

Active / Cleared

Unit status

Major


The transport connection towards the remote peer may be defective. Traffic may get lost.

Reported alarms


LED display

None

Instructions

1) Check cabling. 2) Check CCM configuration at remote peer.

Table 20

32

Id:0900d805808663aa Confidential

DN0980455


4.20

61411 ETH AIS fault interface $IF assoc $a md $d level $l mac addr $x Fault name

ETH AIS fault interface $IF assoc $a md $d level $l mac addr $x

Used in products

LTE

Detecting unit

FTIB, FTFB, FTLB

Source

OAMMEP

Meaning

A Maintenance Endpoint (MEP) received a valid ETH-AIS frame. The alarm shows the following information: Interface MAID MD name MD level Source MAC address

State

Start / Cancel

Unit status

Major


The transport connection towards the remote peer may be defective. Traffic may get lost.

Reported alarms


LED display

None

Instructions

1) Check cabling. 2) Check configuration at remote peer.

Table 21

DN0980455

Id:0900d805808663ab Confidential

33


4.21

61500 Five failed logins to FTM due to wrong user name or password Fault name

Five failed logins to FTM due to wrong user name or password

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

FTM

Meaning

Five consecutive failed login attempts to the FTM have been performed.

State

Transient

Unit status

Warning


None

Reported alarms


LED display

N/A

Instructions

Check your username and password.

Table 22

34


DN0980455


4.22

61510 Automatic BTS Operator Certificate retrieval unsuccessful Fault name

Automatic BTS Operator Certificate retrieval unsuccessful Certificate does not exist

Used in products

LTE

Detecting unit

FTLB, FTIB

Source

CERTH

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).

State

Start / Cancel

Unit status

Major


The requested service is not available.

Reported alarms


LED display

Stable red

Instructions

Provide the certificate.

Table 23

DN0980455


35


4.23

61605 BFD Session down in ingress direction for session $S Fault name

BFD Session down in ingress direction for session $S

Used in products

LTE

Detecting unit

FTIB, FTLB, FTFB

Source

IEIF, IVIF

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.

State

Start / Cancel

Unit status

Major


The communication link between the BTS and the BTS peer is defective. Or the peer is defective. No communication is possible.

Reported alarms


LED display

Stable red

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.

Table 24

36


DN0980455


4.24

61606 BFD Session down in egress direction for session $S Fault name

BFD Session down in egress direction for session $S

Used in products

LTE

Detecting unit

FTIB, FTLB, FTFB

Source

IEIF, IVIF

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.

State

Start / Cancel

Unit status

Major


The communication link between the BTS and the BFD peer is defective. No communication is possible.

Reported alarms


LED display

Stable red

Instructions

Check if the far end has BFD switched on.

Table 25

DN0980455


37


4.25

# autonomous reset as recovery action Fault name

# autonomous reset as recovery action

Used in products

LTE

Detecting unit

FCM

Source

FCM, RFSW, FSP

Meaning

The BTS tries to correct a fault situation by performing a recovery reset to a unit, the site or the BTS.

State

Transient

Unit status

Working


The BTS is operational.

Reported alarms


LED display

Stable green

Instructions

Check the fault history and other active faults of the unit. Note! This fault does not require any (special) actions.

Table 26

38

Id:0900d805808663e2 Confidential

DN0980455


4.26

[User defined] Fault name

[User defined]

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

High or low voltage on the external alarm line. The user specifies the fault text during commissioning.

State

Start / Cancel

Unit status

Working


No actual effect to BTS functionality. This is user specific.

Reported alarms LED display

N/A

Instructions

[User defined]

Table 27

DN0980455


39


4.27

Antenna Line Device failure Fault name

Antenna Line Device failure

Used in products

LTE

Detecting unit

FSM, Antenna Line Device itself

Source

FR, MHA, TILT, EFIL

Meaning

The System Module or the device itself has detected an abnormal operation or a failure in the antenna line device.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the fault situation might have no impact on the operation (BASE STATION or CELL NOTIFICATION), the cell capacity might have decreased (CELL OPERATION DEGRADED), or the cell might not be operational at all (CELL FAULTY).

Reported alarms

7652 BASE STATION NOTIFICATION;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED;7655 CELL NOTIFICATION

LED display

N/A

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.

Table 28

40

Id:0900d805808663c0 Confidential

DN0980455


4.28

Antenna Line failure Fault name

Antenna Line failure

Used in products

LTE

Detecting unit

Flexi Filter, FR

Source

Antenna connector

Meaning

Radio Module (60W RRH) or Filter (all others) has detected overcurrent on the antenna line (note: antenna line term here also refers to the RS485 i/f). 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.

State

Start / Cancel

Unit status

Degraded


The antenna line is not operating correctly. The cell capacity decreases.

Reported alarms


LED display

Alternating red and green (RF working, Antenna Line faulty)

Instructions

Check the antenna line and antenna line devices. Fix or replace the faulty parts/devices.

Table 29

DN0980455

Id:0900d805808663ae Confidential

41


4.29

Antenna Line Operation Degraded Fault name

Antenna Line Operation Degraded

Used in products

LTE

Detecting unit

FR

Source

MHA, RET, EFil

Meaning

An alarm message has been received from the antenna line device. The antenna line operation is degraded.

State

Start / Cancel

Unit status

Degraded


The antenna line is not operating correctly. The cell capacity decreases.

Reported alarms


LED display

Alternating red and green (RF working, Antenna Line faulty)

Instructions

Check the antenna line and antenna line device that causes the alarm. Fix or replace the faulty parts/devices.

Table 30

42


DN0980455


4.30

Automatic neighbor relation failure Fault name

Automatic neighbor relation failure

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

Automatic Neighbor Relation (ANR) procedure failed for a discovered neighbor cell identified by Physical Cell Identifier (PCI) and Earfcn Downlink Radio Frequency (dlEarfcn) because: 1. IP address of a neighbor BTS for the discovered neighbor cell (PCI, dlEarfcn) cannot be found in the pciIpAdrMap mapping table. 2. IP address of a neighbor BTS for the discovered neighbor cell (PCI, dlEarfcn) is present in the pciIpAdrMap mapping table but SCTP X2 connection with the neighbor BTS already exists. 3. IP address of a neighbor BTS for the discovered neighbor cell (PCI, dlEarfcn) is present in the pciIpAdrMap mapping table but SCTP X2 connection cannot be established with the neighbor BTS.

State

Transient

Unit status

Working


The fault has no effect on the base station operation but handovers are not possible.

Reported alarms


LED display

Stable Green

Table 31

DN0980455


43


Instructions

Table 31

44

1. Check in the configuration file (NPF/SCF) if the pciIpAdrMap mapping table includes the correct IP address for the neighbor BTS associated with the discovered neighbor cell. The discovered neighbor cell is defined by the Physical Cell Identifier (PCI) and Earfcn Downlink Radio Frequency (dlEarfcn). 2. Check in the configuration file (NPF/SCF) if the pciIpAdrMap mapping table includes the IP address for the neighbor BTS associated with the discovered neighbor cell. 3. If the IP address of neighbor BTS is correct, then find a reason why SCTP association cannot be established with the neighbor BTS. One of the reasons why SCTP association cannot be established could be short period of MaxTimeSctpSetup timer (SCTP association establishment supervision timer). In such a situation extend the value of MaxTimeSctpSetup timer in the configuration file (NPF/SCF). (Cont.)


DN0980455


4.31

Baseband Bus failure Fault name

Baseband Bus failure

Used in products

LTE

Detecting unit

FSM, FR

Source

FSM, FR

Meaning

The FlexiBTS has detected an abnormal operation or a failure in the BTS internal baseband bus. The failure cannot be pointed to a specific module but there are several possible fault sources.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the fault situation may have no impact on the operation (BASE STATION or CELL NOTIFICATION), the BTS capacity might have decreased (BASE STATION or CELL OPERATION DEGRADED, or CELL FAULTY), or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms

7650 BASE STATION FAULTY;7651 BASE STATION OPERATION DEGRADED;7652 BASE STATION NOTIFICATION;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED;7655 CELL NOTIFICATION

LED display

N/A

Table 32

DN0980455


45


Instructions

Table 32

46

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. 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. (Cont.)


DN0980455


4.32

BTS Blocked Fault name

BTS Blocked

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

The BTS is blocked with BTS Site Manager. The purpose is to avoid fault indications that may be raised during a BTS maintenance task.

State

Start

Unit status

Working


The BTS does not send faults to the network management system (NMS) when the BTS is blocked. The fault cancellations are sent to the NMS. All cells are disabled.

Reported alarms


LED display

Stable green

Instructions

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

Table 33

DN0980455


47


4.33

BTS internal SW management problem Fault name

BTS internal SW management problem

Used in products

LTE

Detecting unit

FSM

Source

FSM, FR, FT, FSP, Faraday

Meaning

A software update to a module or subassembly has failed, or a corrupted SW file has been detected in the FLASH.

State

Start

Unit status

N/A


Depending on the reported alarms, the fault situation might have no impact on the operation (BASE STATION or CELL NOTIFICATION), the BTS capacity might have decreased (BASE STATION or CELL OPERATION DEGRADED, or CELL FAULTY) or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the BTS fault disappears. 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.

Table 34

48

Id:0900d805808663bf Confidential

DN0980455


4.34

BTS is uncommissioned Fault name

BTS is uncommissioned

Used in products

LTE

Detecting unit

FCM

Source

FSM

Meaning

Commissioning file download has been started neither from BTS Site Manager nor NetAct during Autoconfiguration. Autoconfiguration might not be enabled in NetAct, the license is missing or the commissioning file is not found.

State

Start

Unit status

Degraded


The BTS is not commissioned.

Reported alarms


LED display

Blinking red

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.

Table 35

DN0980455

Id:0900d805808663ce Confidential

49


4.35

BTS Master Clock tuning failure Fault name

BTS Master Clock tuning failure

Used in products

LTE

Detecting unit

FCM

Source

FCM

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.

State

Start / Cancel

Unit status

Degraded


The BTS can operate properly for months or even a year when being in the 5% margin area, but eventually the DAC value reaches the adjustment limit (0 or 4095) and the OCXO cannot follow the synchronization reference signal beyond the limit. Assuming that even in this phase the BTS reference signal has correct accuracy (meaning the alarm indication is real), the BTS air interface starts to drift from the correct value (after reaching the limit 0 or 4095) and after a while the 3GPP accuracy limits are not met. Even in that phase the BTS may still be operational but the system performance may drop, affecting e.g. to handovers.

Reported alarms


LED display

Blinking red

Table 36

50


DN0980455


Instructions

Table 36

DN0980455

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. 5. If that does not help, replace the system module. (Cont.)


51


4.36

BTS reference clock missing Fault name

BTS reference clock missing

Used in products

LTE

Detecting unit

FSM

Source

FSM

Table 37

52

Id:0900d805808663be Confidential

DN0980455


Meaning

Table 37

DN0980455

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. (Cont.)


53


State

Start / Cancel

Unit status

N/A


If the reported alarm is 7652 BASE STATION NOTIFICATION, the BTS is using the lower level synchronization source as a reference for tuning the BTS master clock (OCXO). This does not necessarily have any effect on the BTS operation, it depends on the quality of the used lower level source. If the reported alarm is 7651 BASE STATION OPERATION DEGRADED, the BTS has no valid synchronization sources as a reference for tuning the OCXO and the OCXO is in holdover mode, using the last calculated tuning control value. The fault situation does not affect the BTS air interface stability, but if the fault situation lasts for a long time, the accuracy starts to drift slowly. However, it may take several weeks before the BTS/RAN operations start to be affected because of the very small OCXO aging factor.

Reported alarms

7651 BASE STATION OPERATION DEGRADED;7652 BASE STATION NOTIFICATION

LED display

N/A

Table 37

54

(Cont.)


DN0980455


Instructions

DN0980455

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 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 Id:0900d805808663be the FTM (set by the FTM synchronizaConfidentialtion priority setting) may be missing, causing the FTM's internal clock to drop to holdover mode. In this case,

55


4.37

BTS reset required Fault name

BTS reset required

Used in products

LTE

Detecting unit

FSM

Source

FR

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.

State

Start

Unit status

Out of order


The new installed HW resources are not available before the BTS has been reset.

Reported alarms

7653 CELL FAULTY

LED display

Stable red

Instructions

Reset (block/unblock) the BTS.

Table 38

56


DN0980455


4.38

BTS time not corrected Fault name

BTS time not corrected

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

The SNTP time cannot be fetched from the transport system (FTM) within the time limit.

State

Start / Cancel

Unit status

Working


No real time available. Alarms, logs and all reports include an incorrect time.

Reported alarms


LED display

Stable green

Instructions

1. Check the NTP setting. 2. Check the stratum parameter on the NTP server.

Table 39

DN0980455

Id:0900d805808663ad Confidential

57


4.39

Cell blocked Fault name

Cell blocked

Used in products

LTE

Detecting unit

FSM

Source

LCR

Meaning

The user has blocked the cell with BTS Site Manager.

State

Start / Cancel

Unit status

Out of order


The BTS does not send any faults related to the blocked cell or the modules commissioned to the blocked cell to the network management system (NMS). The fault sending to BTS Site Manager is always enabled. The fault cancellations are always sent to the NMS. Calls through the blocked cell are transferred to another cell. It is not possible to establish new calls through the blocked cell.

Reported alarms

7653 CELL FAULTY

LED display

Stable green

Instructions

To cancel the fault, unblock the cell.

Table 40

58


DN0980455


4.40

Commissioning error: Fault name

Commissioning error:

Used in products

LTE

Detecting unit

FSM, FR

Source

FSM, FR, FT

Meaning

Some of the commissioning parameters are either missing or faulty, or there is a mismatch between them.

State

Start

Unit status

N/A


Depending on the reported alarms, the BTS capacity might have decreased (BASE STATION OPERATION DEGRADED), or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms

7650 BASE STATION FAULTY;7651 BASE STATION OPERATION DEGRADED

LED display

N/A

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.

Table 41

DN0980455

Id:0900d805808663bc Confidential

59


4.41

Configuration error: Fault name

Configuration error:

Used in products

LTE

Detecting unit

FSM

Source

FSM, FR, AntennaLine, LCR, LCG

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.

State

Start

Unit status

N/A


Depending on the reported alarms, the fault situation might have no impact on the operation (BASE STATION NOTIFICATION), the BTS capacity might have decreased (BASE STATION OPERATION DEGRADED or CELL OPERATION DEGRADED, or CELL FAULTY), or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms


LED display

N/A

Table 42

60

Id:0900d805808663bd Confidential

DN0980455


Instructions

Table 42

DN0980455

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. (Cont.)

Id:0900d805808663bd Confidential

61


4.42

Failure in connection between BTS and iOMS or 3rd party tool Fault name

Failure in connection between BTS and iOMS or 3rd party tool

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

Failure in Trace connection between BTS and iOMS or 3rd Party Tool.

State

Start / Cancel

Unit status

Degraded


In case of Subscriber trace activation, if the failed trace connection was to be used for sending the Trace Reports, then the BTS considers the trace activation for that subscriber as failed. In case of cell trace and interface trace, if the failed trace connection was to be used for sending the Trace Reports, then the BTS does not start tracing until the trace connection is established successfully.

Reported alarms


LED display

N/A

Instructions

Check the connection with iOMS/3rd Party tool.

Table 43

62


DN0980455


4.43

Failure in optical RP3 interface Fault name

Failure in optical RP3 interface

Used in products

LTE

Detecting unit

FSM, FR

Source

FSM, FR

Meaning

The FlexiBTS has detected an abnormal operation or a failure in an optical RP3 interface between two modules. The failure cannot be pointed to a specific module but there are several possible fault sources.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the fault situation might have no impact on the operation (BASE STATION NOTIFICATION) or the BTS capacity might have decreased (BASE STATION OPERATION DEGRADED or CELL OPERATION DEGRADED, or CELL FAULTY) or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms

7650 BASE STATION FAULTY;7651 BASE STATION OPERATION DEGRADED;7652 BASE STATION NOTIFICATION;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED

LED display

N/A

Table 44

DN0980455


63


Instructions

Table 44

64

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. (Cont.)


DN0980455


4.44

Failure in trace session Fault name

Failure in trace session

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

Failure has occurred during activation/deactivation of Trace Session (Subscriber trace or Cell 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 exceeded 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 trace, the possible reasons are: - Cell Trace feature has not been enabled at the BTS. - Id used for the cell trace session is already in use for another active cell trace session. - Count of cell trace sessions at the BTS has exceeded the maximum number of cell trace sessions supported by the BTS(which is 6).

State

Transient

Unit status

Working


Trace session(for Subscriber/cell) cannot be activated/deactivated.

Reported alarms


LED display

N/A

Table 45

DN0980455

Id:0900d805808663db Confidential

65


Instructions

Table 45

66

For failure in Subscriber trace session activation/deactivation: - Check if feature flag for Subscriber Trace feature has been enabled at the BTS. - If feature is enabled and problem persists, check if already 60 subscriber trace sessions are active. If yes, stop a subscriber trace session before activating a new trace session. - If the problem is not yet resolved, try activating/deactivating the trace session after some time (say after a couple of minutes) - If problem still persists, then stop all subscriber trace sessions and start them again. For failure in Cell trace session activation: - Check if feature flag for Cell Trace feature has been enabled at the BTS. - If feature is enabled and problem persists, check if already 6 cell trace sessions are active. If yes, stop a cell trace session before activating a new trace session. - If problem still persists, then stop all cell trace sessions and start them again. (Cont.)

Id:0900d805808663db Confidential

DN0980455


4.45

Fan failure Fault name

Fan failure

Used in products

LTE

Detecting unit

FSM, FR

Source

FSM/FAN, FR

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.

State

Start / Cancel

Unit status

N/A


If the fans are not rotating as expected, there is a risk that the module temperature rises too high. For example, a Temperature fault might be generated from the alarming module.

Reported alarms


LED display

N/A

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.

Table 46

DN0980455

Id:0900d805808663bb Confidential

67


4.46

FPGA SW update failed Fault name

FPGA SW update failed

Used in products

FlexiBTS

Detecting unit

FRM2/LTX

Source

LTX

Meaning

The FPGA software update has failed.

State

Start

Unit status

Degraded


There can be problems in calls through the affected cell(s).

Reported alarms


LED display

Blinking red

Instructions

1. Block/unblock the RF Module. 2. If that does not help, replace the alarming RF Module.

Table 47

68


DN0980455


4.47

GPS Receiver alarm: Fault name

GPS Receiver alarm:

Used in products

LTE

Detecting unit

FSM

Source

FSM

Meaning

Depending on the dynamic part of the fault indication, the reason for the indication might be: - Poor GPS antenna installation - The GPS receiver is running a site/self survey - The GPS receiver settings are not correct - BTS has detected communication problem with the GPS receiver - GPS receiver has detected a deviation in its functionality

State

Start / Cancel

Unit status

Working


The fault has no direct impact on the operation (BASE STATION NOTIFICATION).

Reported alarms


LED display

Stable green

Table 48

DN0980455


69


Instructions

70


Depending on the dynamic part of the fault indication, select the correct option and perform the steps below in the listed order until the fault disappears. Not tracking satellites: 1. 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. Please refer to the documentation for installations, and if there are deviations within the current installation, reinstall the GPS antenna. Please notice 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 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. Survey ongoing: 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, carry out a 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 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 andDN0980455 change the GPS module, if needed. No stored position: 1. One of the GPS receiver settings is incorrect. Using


4.48

GTP-U Path Failure Fault name

GTP-U Path Failure

Used in products

LTE

Detecting unit

FSM

Source

GTP-U

Meaning

In GTP-U supervision, a network element did not respond to the GTP-U: Echo Request message within time.

State

Start / Cancel

Unit status

Degraded


For S1: The eNB lost the connection to S-GW. All calls using the failed GTP-U data path are released, and new GTPU data tunnels are not created for the failed GTP-U data path until it works again.

Reported alarms


LED display

N/A

Instructions

1) Check the GTP-U path supervision configuration of the eNB. 2) Check the supervised network element for proper operation. 3) Check the communication equipment in between eNB and the supervised network element.

Table 49

DN0980455


71


4.49

Heating element not working Fault name

Heating element not working

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

The heater control connection of the FSM is faulty, there is no heater or the heater is faulty.

State

Start / Cancel

Unit status

Working


Heating from the heating element is not available. The module temperature may not reach the working level or may reach it very slowly.

Reported alarms


LED display

Stable green

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.

Table 50

72


DN0980455


4.50

Incompatible SW version detected Fault name

Incompatible SW version detected

Used in products

LTE

Detecting unit

FCM

Source

FCM, FR, FF, FA, FSP, FTM

Meaning

A new module with an incompatible SW has probably been inserted in the BTS.

State

Start / Cancel

Unit status

Out of order


The resources provided by the module cannot be used, which means that some features do not necessarily work.

Reported alarms

7650 BASE STATION FAULTY;7651 BASE STATION OPERATION DEGRADED;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED

LED display

Stable red (7650, 7653), blinking red (7651, 7654)

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.

Table 51

DN0980455

Id:0900d805808663de Confidential

73


4.51

Mains power break, running Battery Backup Fault name

Mains power break, running Battery Backup

Used in products

LTE

Detecting unit

FCM

Source

FCM

Meaning

There is a fault in the mains power supply. Running on Battery Backup.

State

Start / Cancel

Unit status

Degraded


The battery backup unit is partly or completely in use. If the mains power does not return, the cells are shut down according to the predefined parameters.

Reported alarms


LED display

Stable green

Instructions

Check the mains power supply.

Table 52

74

Id:0900d805808663ac Confidential

DN0980455


4.52

Mast Head Amplifier fault Fault name

Mast Head Amplifier fault

Used in products

LTE

Detecting unit

FSM, FR

Source

FF, AISG MHA

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).

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the fault situation may have no impact on the operation (BASE STATION NOTIFICATION), or the BTS capacity may have decreased (BASE STATION or CELL OPERATION DEGRADED).

Reported alarms

7652 BASE STATION NOTIFICATION;7654 CELL OPERATION DEGRADED

LED display

N/A

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).

Table 53

DN0980455


75


4.53

No connection to Flexi transport submodule Fault name

No connection to Flexi transport submodule

Used in products

LTE

Detecting unit

FSM

Source

FTM

Meaning

The connection to the Flexi Transport submodule (FTM) is lost.

State

Start / Cancel

Unit status

N/A


The BTS is not operational.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the BTS fault disappears. 1. Reset the site. 2. Replace the Transport submodule, which is located inside the System Module.

Table 54

76


DN0980455


4.54

Parallel RP3-01 link length mismatch Fault name

Parallel RP3-01 link length mismatch

Used in products

LTE

Detecting unit

FCM

Source

OptIF

Meaning

The parallel RP3-01 links towards one radio module have too large mutual length difference (more than 30 meters).

State

Start / Cancel

Unit status

Out of order


All commissioned cells are not activated.

Reported alarms


LED display

Stable red

Instructions

Replace parallel RP3-01 fiber links towards one radio module so that the maximum mutual length difference between fibers is less than 30 meters.

Table 55

DN0980455

Id:0900d805808663dd Confidential

77


4.55

Radio resources switched off Fault name

Radio resources switched off

Used in products

LTE

Detecting unit

FCM

Source

Antenna line

Meaning

The radio resources are switched off to prevent possible Radio Module HW failure because of antenna line impedance mismatch. With other than FXCA, FXDA, FXEA, FXSA Radio Modules, switching off means that the I/Q data fed to the Radio Module has zero power due to deactivation of the cell handled by the Radio Module. With FXCA, FXDA, FXEA, FXSA Radio Modules, switching off means that the Power Amplifier within the Radio Module is switched off autonomously by the Radio Module.

State

Start / Cancel

Unit status

Out of order;Working

Unit status attributes

Out of order: if VSWR alarm is not active for the same cell. Working: if VSWR alarm is active for the same cell.

Effect

The affected cell is disabled.

Reported alarms

7653 CELL FAULTY;7655 CELL NOTIFICATION

LED display

Stable red (7653, RF state "faulty"), Blinking red (7653, RF state "degraded"), Stable green (7655)

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.

Table 56

78


DN0980455


4.56

RET Antenna control failure Fault name

RET Antenna control failure

Used in products

LTE

Detecting unit

TILT

Source

TILT

Meaning

Antenna tilting is not possible or might function incorrectly.

State

Start / Cancel

Unit status

Degraded


The BTS capacity possibly decreases.

Reported alarms


LED display

Alternating red and green (RF module working, MHA faulty)

Instructions

1. Recalibrate the RET antenna. 2. If that does not help, replace the RET unit.

Table 57

DN0980455


79


4.57

RF Loss of secondary optical interface Fault name

RF Loss of secondary optical interface

Used in products

LTE

Detecting unit

FRx/LTX

Source

OptIF

Meaning

Secondary optical link between the System Module and RF Module is lost.

State

Start / Cancel

Unit status

Out of order


Calls are not possible through the affected cell(s)

Reported alarms

7653 CELL FAULTY

LED display

Stable red

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.

Table 58

80


DN0980455


4.58

RF Module blocked Fault name

RF Module blocked

Used in products

LTE

Detecting unit

FRx/LTX

Source

LTX

Meaning

A shared (Medusa) FR is blocked.

State

Start / Cancel

Unit status

Out of order


It is not possible to establish phone calls through the blocked FR. The BTS does not send faults related to the blocked Flexi Radio module (FR) to the network management system (NMS). Fault sending to BTS Site Manager is always enabled. The fault cancels are always sent to the NMS.

Reported alarms

7653 CELL FAULTY

LED display

Stable red

Instructions

Unblock the alarming module.

Table 59

DN0980455


81


4.59

RF Module failure Fault name

RF Module failure

Used in products

LTE

Detecting unit

FSM, FR

Source

FR

Meaning

The FlexiBTS has detected an abnormal operation or a failure in the internal functionality of the RF Module.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the BTS capacity might have decreased (CELL OPERATION DEGRADED or CELL FAULTY).

Reported alarms

7653 CELL FAULTY;7654 CELL OPERATION DEGRADED

LED display

N/A

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.

Table 60

82


DN0980455


4.60

RF Module overvoltage protection faulty Fault name

RF Module overvoltage protection faulty

Used in products

FlexiBTS

Detecting unit

FR

Source

LTX

Meaning

RF Module's overvoltage protection is broken.

State

Start

Unit status

Working


There is no immediate effect on the module operation, but the module might be severely damaged in the next overvoltage situation.

Reported alarms


LED display

Stable green

Instructions

Replace the alarming RF Module.

Table 61

DN0980455


83


4.61

S1 interface recovery failure Fault name

S1 interface recovery failure

Used in products

LTE

Detecting unit

FSM

Source

LNMME

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.

State

Start / Cancel

Unit status

Out of order;Degraded


Unit status is Degraded if at least one other S1 interface is operational, else the Unit status is Out of order

Effect

The S1 interface is unavailable and the BTS is not available for call setup.

Reported alarms


LED display

N/A

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.

Table 62

84


DN0980455


4.62

S1 interface setup failure Fault name

S1 interface setup failure

Used in products

LTE

Detecting unit

FSM

Source

LNMME

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.

State

Start / Cancel

Unit status



Unit status is Degraded if at least one other S1 interface is operational, else the Unit status is Out of order

Effect

The S1 interface is not available for call setup and existing calls are released.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the alarm disappears. 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.

Table 63

DN0980455

Id:0900d805808663cd Confidential

85


4.63

S1 SCTP path failure Fault name

S1 SCTP path failure

Used in products

LTE

Detecting unit

FSM

Source

SCTP link on S1 interface

Meaning

One of the transport paths(SCTP) in SCTP connection to MME has failed. Only applicable when SCTP multihoming is supported. An alternate transport path is available to pursue operation.

State

Start / Cancel

Unit status

Degraded


One of the transport paths(SCTP) in SCTP connection to MME has failed. Only applicable when SCTP multihoming is supported. An alternate transport path is available to pursue the operation.

Reported alarms


LED display

N/A

Instructions

1. Check whether the transport path is alive. 2. Check the configuration of transport addresses at MME.

Table 64

86


DN0980455


4.64

System information broadcast parameters overflow Fault name

System information broadcast parameters overflow

Used in products

LTE

Detecting unit

FSP

Source

FSP

Meaning

System Information Broadcast related parameters have changed more than 32 times within 3 hours period.

State

Transient

Unit status

Working


Some of the UEs with a complete set of system information of the cell stored which has left cell and comes back within 3 hours of time might not recognize, that there was a system information change.

Reported alarms


LED display

Stable green

Instructions

Note! This fault does not require any (special) actions.

Table 65

DN0980455

Id:0900d805808663dc Confidential

87


4.65

System Module failure Fault name

System Module failure

Used in products

LTE

Detecting unit

FSM

Source

FSM

Meaning

The FlexiBTS has detected an abnormal operation or a failure in the internal functionality of the System Module.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the BTS capacity might have decreased (BASE STATION OPERATION DEGRADED) or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the BTS fault disappears. 1. Reset the System Module. 2. Replace the System Module.

Table 66

88


DN0980455


4.66

Technical log buffer freezing Fault name

Technical log buffer freezing

Used in products

LTE

Detecting unit

FSP

Source

FSP

Meaning

The technical log buffer has been frozen in the BTS for an internal reason.

State

Transient

Unit status

Working


This fault has no effect on BTS operation.

Reported alarms


LED display

None

Instructions

This fault does not require any actions.

Table 67

DN0980455


89


4.67

Temperature alarm Fault name

Temperature alarm

Used in products

LTE

Detecting unit

FSM, FR

Source

FSM, FR

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.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarms, the fault situation might have no impact on the operation (BASE STATION NOTIFICATION), the BTS capacity might have decreased (CELL OPERATION DEGRADED, or CELL FAULTY)) or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms

7650 BASE STATION FAULTY;7652 BASE STATION NOTIFICATION;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED

LED display

N/A

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.

Table 68

90

Id:0900d805808663ba Confidential

DN0980455


4.68

Temperature too low (Heating ongoing) Fault name

Temperature too low (Heating ongoing)

Used in products

LTE

Detecting unit

FRx/LTX

Source

LTX

Meaning

The temperature inside the RF Module is too low and heating is ongoing.

State

Start / Cancel

Unit status

Out of order


This fault should cancel itself. Heating of module is ongoing. During BTS startup affected cell resources will be reported to FCM as unavailable. During runtime (althought RF is restarted), fault is ignored.

Reported alarms

7653 CELL FAULTY

LED display

Stable red

Instructions

1. Wait until the fault is canceled. This may take up to 15 minutes. 2. If the fault is not canceled within the expected time, block/unblock the RF Module. 3. If that does not help, replace the alarming RF Module.

Table 69

DN0980455


91


4.69

Toggling: Fault name

Toggling:

Used in products

LTE

Detecting unit

FSM

Source

FSM, FR, FT

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 supressed until the toggling alarm condition is cleared. Severity of this BTS Fault is the same than the severity of the toggling BTS Fault.

State

Start / Cancel

Unit status

N/A


Depending on the reported alarm, the fault situation might have no impact on the operation (BASE STATION or CELL NOTIFICATION), the BTS capacity might have decreased (BASE STATION or CELL OPERATION DEGRADED, or CELL FAULTY), or the BTS might not be operational at all (BASE STATION FAULTY).

Reported alarms

7650 BASE STATION FAULTY;7651 BASE STATION OPERATION DEGRADED;7652 BASE STATION NOTIFICATION;7653 CELL FAULTY;7654 CELL OPERATION DEGRADED;7655 CELL NOTIFICATION;7665 BASE STATION TRANSMISSION ALARM

LED display

N/A

Table 70

92

Id:0900d805808663cf Confidential

DN0980455


Instructions

Table 70

DN0980455

1. Check the fault name of the toggling BTS fault from the Fault name of this 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." (Cont.)

Id:0900d805808663cf Confidential

93


4.70

Transport layer connection failure in S1 interface Fault name

Transport layer connection failure in S1 interface

Used in products

LTE

Detecting unit

FSM

Source

SCTP link for S1 interface.

Meaning

The transport path (SCTP) for connection to MME has broken. The reason for this can be an unplugged cable to MME. No transport path available to pursue operation on the faulty connection with the MME.

State

Start / Cancel

Unit status



Unit status is "Degraded" if the fault is on an S1 interface with at least one other S1 interface available for use. Unit status is "Out of Order" when all S1 interfaces are faulty.

Effect

S1 interface is unavailable. If there is no other S1 interface available for use then BTS operation is considered faulty and no calls can be setup. If there is at least one other S1 interface available for use then BTS operation is considered degraded and BTS can continue operation(i.e. setup calls) using available S1 interface(s).

Reported alarms


LED display

N/A

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

Table 71

94


DN0980455


4.71

Transport layer connection failure in S1/X2 interface Fault name

Transport layer connection failure in S1/X2 interface SCTP endpoint failure (6201)

Used in products

LTE

Detecting unit

FSM

Source

SCTP link for S1/X2 interface.

Meaning

The transport path (SCTP) for connection to MME or to an adjacent BTS has broken. The reason for this can be an unplugged cable to MME/adjacent BTS. No transport path available to pursue operation.

State

Start / Cancel

Unit status



Unit status is Degraded if the fault is on the X2 interface Unit status is Out of Order when all S1 interfaces are faulty

Effect

In case the transport path (SCTP) for S1 is broken, S1 interface is unavailable. No calls can be setup. Base station is faulty. In case transport path (SCTP) for X2 is broken, X2 interface is unavailable. Handover of calls from or to cells of the associated adjacent BTS is not possible. Base station operation is considered degraded.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the alarm disappears. 1. Check the connection with MME/adjacent BTS based on whether the S1/X2 link is broken respectively. 2. Check if MME or the adjacent BTS is operational. If this fault happens right after a commissioning or a configuration change, verify the following configuration data: IP address of the MME or adjacent BTS

Table 72

DN0980455


95


4.72

Transport layer connection failure in X2 interface Fault name

Transport layer connection failure in X2 interface

Used in products

LTE

Detecting unit

FSM

Source

SCTP link for X2 interface.

Meaning

The transport path (SCTP) for connection to an adjacent BTS has broken. The reason for this can be an unplugged cable to the adjacent BTS. No transport path available to pursue operation on the faulty connection with the adjacent BTS.

State

Start / Cancel

Unit status

Degraded


X2 interface is unavailable. Handover of calls from or to cells of the associated adjacent BTS is not possible. Base station(BTS) operation is considered degraded.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the BTS Fault disappears. 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

Table 73

96

Id:0900d805808663da Confidential

DN0980455


4.73

TX failure in MIMO Fault name

TX failure in MIMO

Used in products

LTE

Detecting unit

FSM

Source

LCR

Meaning

Due to TX path failure MIMO (Multiple Input Multiple Output) functionality is not operational in the cell related to the faulty TX.

State

Start / Cancel

Unit status

Working


The BTS continues working with a functioning TX paths in remaining cells, due to TX failure MIMO (Multiple Input Multiple Output) functionality is not operational for the cell related to the faulty TX. An attempt of the operator to configure any other mode than the single TX mode for the cell will be unsuccessful in this case.

Reported alarms


LED display

Stable green

Instructions

The cell, which is related to the faulty TX, can be switched to the single TX mode by manual change of the value of the attribute dlMimoMode of the LCEL object, which corresponds to the cell related to the faulty TX, to "SingleTX" (0) and manual triggering the BTS restart. Than the cell will operate in the single mode unless all the TXes related to the cell are faulty. Check the other active BTS faults and act accordingly.

Table 74

DN0980455


97


4.74

Unit blocked Fault name

Unit blocked

Used in products

LTE

Detecting unit

FSM

Source

FR

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.

State

Start / Cancel

Unit status

Out of order


The BTS does not send faults related to the blocked module to the network management system (NMS). The fault sending to BTS Site Manager is always enabled. The fault cancellations are always sent to the NMS. It is not possible to establish phone calls through the blocked module.

Reported alarms

7653 CELL FAULTY

LED display

Stable yellow

Instructions

Unblock the module with BTS Site Manager.

Table 75

98

Id:0900d805808663df Confidential

DN0980455


4.75

VSWR alarm Fault name

VSWR alarm

Used in products

LTE

Detecting unit

Flexi Filter, FR

Source

Antenna connector

Meaning

Radio Module (60W RRH)/the Filter (all others) has detected a VSWR value exceeding the defined level. The antenna line is mismatched or damaged.

State

Start

Unit status

Out of order


The cell is disabled.

Reported alarms

7653 CELL FAULTY

LED display

Stable red

Instructions

1. Check the antenna cables, connectors, antenna and possible antenna line devices. 2. Check the antenna line (TX-cable-antenna) impedance matching.

Table 76

DN0980455

Id:0900d805808663af Confidential

99


4.76

VSWR alarm Fault name

VSWR alarm

Used in products

LTE

Detecting unit

Flexi Filter, FR

Source

Antenna connector

Meaning

Radio Module (60W RRH)/the Filter (all others) has detected a VSWR value exceeding the defined level. The antenna line is slightly mismatched.

State

Start / Cancel

Unit status

Degraded


The output power at the antenna is decreased and the antenna is not working optimally.

Reported alarms


LED display

Blinking red

Instructions

1. Check the antenna cables, connectors, antenna and possible antenna line devices. 2. Check the antenna line (TX-cable-antenna) impedance matching.

Table 77

100


DN0980455


4.77

X2 interface recovery failure Fault name

X2 interface recovery failure

Used in products

LTE

Detecting unit

FSM

Source

LNADJ

Meaning

The X2 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 X2 connectivity, the adjacent BTS has failed, etc.

State

Start / Cancel

Unit status

Degraded


Handovers from or to cells of the related adjacent BTS are not possible.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the alarm disappears. 1. Check the availability of the adjacent BTS. 2. Check the connection with the adjacent BTS. 3. Disconnect and reconnect the adjacent BTS.

Table 78

DN0980455

Id:0900d805808663cb Confidential

101


4.78

X2 interface setup failure Fault name

X2 interface setup failure

Used in products

LTE

Detecting unit

FSM

Source

LNADJ

Meaning

There is no X2 connectivity to an adjacent BTS, the adjacent BTS has failed, etc.

State

Start / Cancel

Unit status

Degraded


Handovers to cells of the related adjacent BTS are not possible.

Reported alarms


LED display

N/A

Instructions

Note: Perform the steps below in the listed order until the alarm disappears. 1. Check connectivity to the related adjacent BTS. 2. Check other faults. 3. Check the parameters related to the X2 interface to the adjacent BTS. 4. Reset the BTS.

Table 79

102

Id:0900d805808663ca Confidential

DN0980455


4.79

X2 neighbor cell configuration inconsistency Fault name

X2 neighbor cell configuration inconsistency

Used in products

LTE

Detecting unit

FSM

Source

LNADJ

Meaning

Inconsistent cell information encountered by BTS in: a) the configuration of an adjacent BTS or b) the configuration of an S1 handover target cell configured at BTS (in LNADLP Managed object) compared to the configuration received for that cell from an adjacent BTS. For case(a) above: The only cases when BTS reports inconsistent data currently are when cell information(Physical Cell ID and frequency i.e DL EARFCN) received from an adjacent BTS is found to be identical to - the cell information received from another adjacent BTS - one of own(i.e. local) BTS's configured cell information. For case(b) above: This case arises when BTS has a S1 handover target cell configured locally via O&M and also has an X2 link towards the BTS serving this target cell. In this case, BTS reports inconsistent data if the following cell information configured for the S1 handover target cell at BTS does not match the cell information received for that cell from adjacent BTS: - Physical Cell ID - Tracking Area Code - List of Broadcast PLMN IDs - Downlink EARFCN

State

Transient

Unit status

Working

Unit status attributes Table 80

DN0980455

Id:0900d805808663cc Confidential

103


Effect

In case of inconsistent adjacent BTS cell information in comparison to own BTS's cell information or some other BTS's(with which BTS has active X2 connection) cell information, handovers of calls from local BTS to those cells of adjacent BTS with inconsistent configuration might not be possible. In case of inconsistent S1 handover target cell information configured at BTS locally in comparison to the cell information from the adjacent BTS serving this target cell, S1 handover towards the target cell will not be impacted.

Reported alarms


LED display

N/A

Instructions

In case of inconsistent adjacent BTS information, cross-check the correctness of the cell configuration of the already known cell(ECGI info identifying this cell is provided when alarm is raised) at BTS against the cell configuration of the cell(ECGI info identifying this cell is provided as part of additional info when alarm is raised) of adjacent BTS for which the error has been detected. In case of inconsistent S1 handover target cell information configured at own(i.e. local) BTS, cross-check the information in LNADLP managed object configured for this target cell with the information configured for this cell at adjacent BTS.

Table 80

104

(Cont.)

Id:0900d805808663cc Confidential

DN0980455

Alm Fleximrlbts Faults

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