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  • 5/28/2018 LTE Troubleshooting in OSS

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    Nokia Siemens Networks

    NetAct OSS5.3 CD Set 3

    Troubleshooting Flexi Multiradio BTS LTE

    sites

    DN0967995

    Issue 1-0

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    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 whichthe 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. Thedocumentation 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 andfinally 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 DOCUMENTA-TION OR FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO SPECIAL, DIRECT, INDI-

    RECT, 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 INFORMATIONIN 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 respectiveowners, and they are mentioned for identification purposes only.

    Copyright Nokia Siemens Networks 2011/7/6. All rights reserved

    f Important Notice on Product SafetyThis product may present safety risks due to laser, electricity, heat, and other sourcesof 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:

    f Wichtiger Hinweis zur ProduktsicherheitVon diesem Produkt knnen Gefahren durch Laser, Elektrizitt, Hitzeentwicklung oder

    andere Gefahrenquellen ausgehen.

    Installation, Betrieb, Wartung und sonstige Handhabung des Produktes darf nur durch

    geschultes und qualifiziertes Personal unter Beachtung der anwendbaren Sicherheits-

    anforderungen erfolgen.

    Die Sicherheitsanforderungen finden Sie unter Sicherheitshinweise im Teil Legal,Safety and Environmental Information dieses Dokuments oder dieses Dokumentations-

    satzes.

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    Table of ContentsThis document has 21 pages.

    1 About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.1 Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    1.1.1 Supported releases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    1.1.2 Functionality used in this operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    1.2 NetAct compatibil ity and capacity information . . . . . . . . . . . . . . . . . . . . . 6

    1.3 Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

    2 Overview of NetAct troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

    2.1 Avoiding operational problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

    2.2 Diagnostic tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

    2.3 Checking compatibili ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

    2.4 Checking application licences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.5 Contacting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

    3 Troubleshooting Flexi Multiradio BTS LTE sites . . . . . . . . . . . . . . . . . . 13

    3.1 Prerequisites for troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

    3.2 Overview of the operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

    3.3 Monitoring network regions to locate faulty Flexi Multiradio BTS LTEs. 14

    3.3.1 Flexi Multiradio BTS LTE site alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

    3.3.2 iOMS alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

    3.4 Checking the event history of the alarming Flexi Multiradio BTS LTE site16

    3.5 Checking the status of adjacent Flexi Multiradio BTS LTEs . . . . . . . . . 173.6 Referring to Alarm Manual for alarm-specific instructions . . . . . . . . . . . 17

    3.7 Troubleshooting Flexi Mult iradio BTS LTE modules using the local man-agement tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

    3.8 Generating reports on Flexi Multiradio BTS LTE performance . . . . . . . 18

    3.9 Resetting the Flexi Mult iradio BTS LTE site . . . . . . . . . . . . . . . . . . . . . 19

    3.10 Initiating recovery actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

    4 Where to find more information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

    Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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    List of FiguresFigure 1 Overview of the common troubleshooting procedures . . . . . . . . . . . . . . . 9

    Figure 2 Troubleshooting Flexi Multiradio BTS LTE sites . . . . . . . . . . . . . . . . . . . 14

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    List of TablesTable 1 Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

    Table 2 How to avoid operational problems in NetAct . . . . . . . . . . . . . . . . . . . . 10

    Table 3 Possible reasons for operational problems in NetAct . . . . . . . . . . . . . . 10

    Table 4 Compatibility levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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    About this document

    1 About this documentThis document provides you with an example workflow of the tasks performed in trou-

    bleshooting Flexi Multiradio BTS LTE in a NetAct regional cluster. Troubleshooting is an

    activity to detect, locate and correct any kind of equipment, installation, configuration or

    low performance error. Troubleshooting is based on alarms originated from actual faults

    and detected in the network monitoring center during the monitoring process.

    1.1 Prerequisites

    This section lists the software and functionality requirements that enable you to perform

    the operations described in this document. Read this section carefully to avoid future

    unnecessary troubleshooting.

    1.1.1 Supported releasesThe information in this document is related to the Nokia Siemens Networks software

    release OSS5.2 CD Set 3. We recommend that you do not use this document with any

    other Nokia Siemens Networks software releases.

    1.1.2 Functionality used in this operation

    The following NetAct functionalities are used in troubleshooting:

    Monitor

    Top-level User Interface

    Alarm Monitor Alarm History (optional functionality)

    Modifiable Alarm Manual

    Trouble Ticket Interface

    Reporter

    Report Builder

    Other Nokia Siemens Networks functionality

    Flexi Multiradio BTS LTE Site Manager

    1.2 NetAct compatibility and capacity information

    For information on the NetAct system and capacity, and the compatibility between

    NetAct and network element releases, see the NetAct Compatibility and Capacity Infor-

    mationdocument.

    1.3 Terms

    This section provides a brief list of the terms used in this document. If a term or word

    does not appear in this section, see the Glossary.

    http://pdn03511098.pdf/http://pdn03511098.pdf/http://general_glossary.pdf/http://general_glossary.pdf/http://pdn03511098.pdf/http://pdn03511098.pdf/
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    Term Explanation

    BTS Base Transceiver Station

    DNS Domain Name System

    FM Fault Management

    FTM Flexi Transport Module

    ID Unique Identification of an Object

    LDAP Lightweight Directory Access Protocol

    LTE Long Term Evolution

    KPI Key Performance Indicator

    NE Network Element

    NOLS Nokia Online Services

    O&M Operation and Maintenance

    PM Performance Management

    RAN Radio Access Network

    Table 1 Terms

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    Overview of NetAct troubleshooting

    2 Overview of NetAct troubleshootingThis chapter describes the basic principles of troubleshooting, which instructs you how

    to proceed when you first detect a fault in your system and begin the troubleshooting

    procedure. You should always read this chapter before using any of the recovery proce-

    dures presented in this document. It also briefly describes how you can avoid opera-

    tional problems.

    Begin NetAct troubleshooting by checking the items listed in the following figure. You

    should first determine whether the problem only occurs in some network elements or all

    network elements. After determining the location of the problem, continue by checking

    compatibility and licences. You should proceed by first checking the DNS, LDAP, high-

    availability service and the NetAct processes because they affect the functionality of the

    entire system. However, the order of the other system checks is random.

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    Figure 1 Overview of the common troubleshooting procedures

    2.1 Avoiding operational problems

    To avoid operational problems or considerably reduce the amount of trouble situations

    occurring in your system, see the following table as a quick reference to get to know the

    maintenance tasks you should carry out to keep your system fully functional at all times.

    Check and comparethe configurationsof functional and

    nonfunctional NEs

    Check when theproblem first

    occured

    Check and correctopen faults

    Doesthe problem

    occur with allNEs?

    YesNo

    Check LDAP Check LinAS

    Check CIFS/9000

    Check licences

    Checkcompatibility

    Check hardware

    Check usermanagement

    Check faultmanagement

    Check performancemanagement

    Check DCN

    Check systemlevel log files

    Check high-availability solution

    Check NetActprocesses

    Check Oracleprocesses

    Check the NetActdatabase

    Check GUIS

    Check filesystems

    Checkmessaging

    Check DNS

    NE

    NetAct

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    Overview of NetAct troubleshooting

    The following table lists some of the reasons for operational problems in NetAct:

    2.2 Diagnostic tools

    Diagnostic tools provide a set of automatic and manual tests for detecting problems,

    analysing the configuration and verifying that NetAct is functioning properly. For more

    information on using these scripts and detailed descriptions of the tests, see Testing the

    System Platform.

    2.3 Checking compatibility

    After determining the faulty network elements, check that they are compatible with

    NetAct. Network elements fall into three categories: fully supported, compatible and not

    supported. For an explanation on different compatibility levels, see the following table.

    What to do Why to do it

    Regularly perform the maintenance tasks

    described in NetAct System AdministrationRoutines.

    This document describes routine tasks

    which a NetAct system administratorshould perform regularly. When mainte-nance tasks are performed regularly,

    problems in the system are less likely to

    occur.

    Install all active NetAct Change Deliveries. Change Deliveries correct detected faults.

    To avoid these faults in your system, installall Change Deliveries.

    Read the NetAct Technical Notes. Technical Notes inform you of detected

    faults and help to avoid possible problems.

    Technical Notes also contain a correctionschedule and indicate which notes are still

    valid. Technical Notes are available to all

    users of NetAct on NOLS athttp://online.portal.nokiasiemensnet-

    works.com

    Table 2 How to avoid operational problems in NetAct

    Failure What can cause it

    Hardware Disk failure

    Cable problem

    Power breakdown

    Application use Applications are misused.

    System configuration Faults in installing Change Deliveries

    Faults in integration

    Faults in commissioning

    Software Problems in the NetAct software

    Table 3 Possible reasons for operational problems in NetAct

    http://pdn019047.pdf/http://pdn019047.pdf/http://pdn98619357.pdf/http://pdn98619357.pdf/http://pdn019047.pdf/http://pdn019047.pdf/http://pdn98619357.pdf/http://pdn98619357.pdf/
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    For the latest information on supported network element releases and currently support-

    ing functions provided for them by NetAct applications, see NetAct and Network

    Element Compatibilityon NOLS at http://online.portal.nokiasiemensnetworks.com.

    g Authentication is required to get access to NOLS.

    2.4 Checking application licences

    Before beginning specific troubleshooting tasks, check that a licence exists for the appli-

    cation or a certain feature. An entry in the licence file lmdlicmx.datexists for all

    licensed applications.NetAct uses two different mechanisms for licensing applications:

    1. Installation licence

    The installation licence is used during the installation of the corresponding compo-

    nent or application. For example, PM Aggregation uses an installation-specific

    licence, which means that all software including database components are missing

    from the system without the appropriate licence.

    2. Run-time licence

    Run-time licensing means that all software including database parts are installed

    into the system, but the corresponding application or feature cannot be used without

    a licence, for example PM-ASCII interfaces and the Alarm Forwarding application.

    To check the application licence

    1 Log into the Data Server with the username omc.2 In the $OMCPOLICEdirectory, in the file lmdlicmx.dat, check if the string

    LTE_ADAPTATION exists.

    For more information about the lmdlicmx.dat license file, see lmdlicmx.datinSystem

    Platform Technical Reference Guide.

    2.5 Contacting Technical Support

    When performing troubleshooting, you can turn to Nokia Siemens Networks TechnicalSupport for help if the problem persists and can not be solved by yourself. In such case,

    Compatibility Description

    Support The defined current (for example, fault management, performance

    management or configuration management) or relevant parts of thenew features and related alarms, measurements and parameters ofthe new NE release are supported by NetAct releases or Change

    Deliveries on top of releases.

    Compatible Different releases of NetAct work together (installing a new version

    does not affect existing functionalities) but no new features, alarms or

    measurements are supported. You should upgrade NetAct if new func-tionality of a network element is needed.

    Not supported Combination of different NetAct releases is impossible. You must

    upgrade NetAct or the network element.

    Table 4 Compatibility levels

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    Overview of NetAct troubleshooting

    it is suggested that certain files and reports related to the fault be saved and sent to

    Technical Support for further investigation. With regard to the files and reports needed,

    contact local Technical Support personnel for further information.

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    3 Troubleshooting Flexi Multiradio BTS LTE

    sites

    The troubleshooting operation described in this chapter is based on the assumption thatall the preparatory tasks listed in section Prerequisites for troubleshootinghave been

    carried out.

    The supported releases and functionalities used in this operation are presented in

    chapter Prerequisites.

    3.1 Prerequisites for troubleshooting

    To efficiently perform troubleshooting tasks on Flexi Multiradio BTS LTE sites and locate

    faults, carry out the following preparatory tasks in regional network management centers

    before you start troubleshooting procedures:

    Collect and store fault and performance data.

    For more information on measurement data management, see Reporter and Perfor-

    mance Management Principles.

    Create views for the LTE RAN network.

    For instructions, see Building and Maintaining Viewsand Creating viewsin Network

    Editor Help.

    Use advanced monitoring techniques for focused monitoring and execute strategies

    for reducing the alarm flow, for example:

    Working sets

    For more information on creating and using working sets, see Working Set

    Manager Help.

    Maintenance regions

    For more information on defining maintenance regions for monitoring, see

    Setting the area to be monitoredinAlarm Monitor Help.

    Filtering rules

    For more information on filtering rules, see Creating filtering rulesin FM Rule

    Editor Help.

    Alarm trigger rules

    For more information, see Using Alarm Triggerin Monitoring Principles.

    Using Maintenance Mode

    For more information, see Using Maintenance Modein Monitoring Principles.

    Necessary measurements are running and sufficient PM data is available for reportgeneration in the regional databases.

    For more information on monitoring tasks and tools as well as alarm reduction, see Mon-

    itoring Principles.

    3.2 Overview of the operation

    The following figure illustrates the whole procedure for troubleshooting Flexi Multiradio

    BTS LTE sites. However, it is possible to find the fault at any phase of the operation.

    If you are familiar with the detailed steps involved in this operation, you can use the

    figure as a quick reference to the main phases of the operation. When you need more

    detailed information on how to perform a particular task, you can access the instructionsby clicking the relevant step in the figure.

    http://pdn0134722.pdf/http://pdn0134722.pdf/http://pdn9784605.pdf/http://pdn9784605.pdf/http://pdn98908408.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98614174.pdf/http://pdn98908408.pdf/http://pdn9784605.pdf/http://pdn9784605.pdf/http://pdn0134722.pdf/http://pdn0134722.pdf/
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    Figure 2 Troubleshooting Flexi Multiradio BTS LTE sites

    3.3 Monitoring network regions to locate faulty Flexi Multira-

    dio BTS LTEs

    Alarm Monitoris a key tool for monitoring the network fault situations and alarms in

    real-time. By dividing the network into regions and then monitoring alarms coming from

    smaller areas, it is much easier to find the faulty Flexi Multiradio BTS LTE site. Alarm

    Alarm History

    Top-level UI

    Alarm Monitor/Top-level UI

    Modifiable AlarmMonitor

    Check event historyof faulty Flexi

    Multiradio BTS LTE

    Check alarm specificinstructions

    Check status ofadjacent FlexiMultiradio BTS LTEs

    Troubleshoot Flexi MultiradioBTS LTE modules and

    fetch the BSTechReport

    Flexi MultiradioBTS LTE

    Site Manager

    Start

    ReporterGenerate reports on

    Flexi Multiradio BTS LTEperformance

    Stop

    Initiate recoveryactions

    Trouble Ticket

    Interface

    Locate faulty FlexiMultiradio BTS LTE

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    reports can be filtered by maintenance regions, therefore alarms in different mainte-

    nance regions can be monitored separately using several windows.

    Once you receive an alarm in Alarm Monitor, the first task is to locate and identify the

    fault or the faulty element for more detailed troubleshooting.

    t You can also start the Alarm Monitorapplication from a managed objects pop-up menuand monitor only this particular objects alarms.

    Another way to select only one Flexi Multiradio BTS LTE site to be monitored is to drag

    and drop the object into Alarm Monitorand set the Monitoring Criteriato cover

    only this particular element.

    3.3.1 Flexi Multiradio BTS LTE site alarms

    This chapter provides information on alarms related to Flexi Multiradio BTS LTE sites.

    Examples of Flexi Multiradio BTS LTE site alarms are listed below. These alarms are

    originated from the BTS itself.

    61006 THE FTM BOOTED AT $DATE DUE TO $RCAUSE

    61010 BTS RESET REQUIRED

    61030 DEAD PEER DETECTED

    61050 MISSING OR NON-COMPLIANT SFP MODULE ON UNIT $U, INTERFACE

    $I

    61058 SYNCHRONIZATION LOST

    61073 ROUTING MISCONFIGURATION FOR APPLICATION $A

    61104 EBER ON UNIT $U, INTERFACE $IF

    61150 LOMF ON SLOT $U, INTERFACE $IF

    61400 LICENSE MISSING FOR FEATURE $FEATURE ON INTERFACE $IF

    61500 FIVE FAILED LOGINS TO FTM DUE TO WRONG USER NAME OR

    PASSWORD

    7424 EXTERNAL AL 24

    7651 BASE STATION OPERATION DEGRADED

    7654 CELL OPERATION DEGRADED

    7660 BASE STATION LICENCE EXPIRED

    7665 BASE STATION TRANSMISSION ALARM

    71058 NE CONNECTION FAILURE

    71101 OMS ALARM UPLOAD FROM NE FAILED

    71103 ID CONFLICT IN BTS O&M CONNECTIONFor more information on Flexi Multiradio BTS LTE site alarms, see LBTS Alarms

    (DN0951924) available on NOLS: http://online.portal.nokiasiemensnetworks.com.

    For more detailed information on each alarm, see the Modifiable Alarm Manualin Mon-

    itoring Principles.

    Examples of Flexi Multiradio BTS LTE Transport Module (FTM) alarms are listed below.

    These alarms are triggered by the FTM modules in Flexi Multiradio base stations and

    they are transmitted via the base station O&M part.

    -r-xr-xr-x 1 ccvobadm nms 766 Apr 14 14:04 ama61006.man

    -r-xr-xr-x 1 ccvobadm nms 417 Apr 14 14:04 ama61010.man

    -r-xr-xr-x 1 ccvobadm nms 1247 Apr 14 14:04 ama61028.man -r-xr-xr-x 1 ccvobadm nms 529 Apr 14 14:04 ama61050.man

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    -r-xr-xr-x 1 ccvobadm nms 741 Apr 14 14:04 ama61400.man

    -r-xr-xr-x 1 ccvobadm nms 333 Apr 14 14:04 ama61500.man

    3.3.2 iOMS alarms

    Examples of iOMS alarms for Flexi Multiradio BTS LTE-related failures are listed below:

    71000 PM FTP CONNECTION FAILED

    71001 MEASUREMENT DATA NOT TRANSFERRED

    71003 OMS MEASUREMENT DATA PROCESSING OVERLOAD

    71052 OMS FTP CONNECTION COULD NOT BE OPENED

    71054 O&M MEDIATION FAILURE

    71057 NWI3 NOTIFICATION MISSING

    For more information on LTE iOMS alarms, see LTE iOMS Alarms and Troubleshoot-

    ing(DN0962937) available on NOLS: http://online.portal.nokiasiemensnetworks.com.

    To locate and identify the faulty Flexi Multiradio BTS LTE site based on an alarm

    1 Start Alarm Monitorfrom Application Manager or from Top-level User Interface.2 Double-click an alarm in Alarm Monitorto open the Alarm Detailsdialog if you

    need more detailed information on the alarm.

    3 For information on the original reasons behind BTS alarms and on correctiveactions, see the Alarm Manualpages. For instructions, see chapter Referring to

    Alarm Manual for alarm specific instructions.

    4 Locate the faulty element on Top-level User Interface. Check the alarm lists to findthe element that has generated the alarm. Concentrate first on the alarms generated

    by BTS and FTM, and then on the alarms generated by iOMS. Always proceed by

    targeting the most severe alarm first. After locating the BTS on Top-level User

    Interface, you can start applications and access the BTS Site Manager. .

    For instructions on how to navigate through the views on Top-level User Interface,

    see Navigating through subviewsin Top-level User Interface Help.

    5 You can also drag and drop the BTS into Alarm Monitorto get the basic informationabout it. The information in Alarm Monitortells you the type, ID, name and geo-

    graphical location(site address and name) of the faulty Flexi Multiradio BTS LTE

    site.

    3.4 Checking the event history of the alarming Flexi Multiradio

    BTS LTE site

    You can get information on alarms originated from Flexi Multiradio BTS LTE site by

    referring to the textual information on alarms in Alarm History.

    Alarm Historyprovides you with access to all alarms in the faulty Flexi Multiradio BTS

    LTE site and allows you to create different queries by defining different search criteria.

    Because the amount of alarms can be significant, search criteria help you narrow down

    the search. WithAlarm History, you can search for alarm history data in a certain main-

    tenance region and make very accurate searches within a precise time frame like one

    minute. In addition, you can see other alarms that are related to a certain fault. It also

    http://pdn0134722.pdf/http://pdn0134722.pdf/http://pdn0134722.pdf/http://pdn0134722.pdf/
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    tells you how often the fault has occurred in the Flexi Multiradio BTS LTE site through a

    certain period of time.

    To check alarm history data of a specific Flexi Multiradio BTS LTE site

    1 In Top-level User Interface, start Alarm History.2 Select Search Search Criteria.3 Set the managed object search criterion to include the faulty BTS.4 Fill in other search criteria, such as the alarm period, if you want to define your

    search even further.

    5 Start the search.You may find the root cause of the fault you are investigating by checking the status

    of Flexi Multiradio BTS LTE site from a longer time period, such as bad weather con-

    ditions, BTS down and so on.

    3.5 Checking the status of adjacent Flexi Multiradio BTS LTEs

    Once you have located the alarming Flexi Multiradio BTS LTE and analysed the alarm

    data, you should check the adjacent BTSs within the same maintenance region to see

    if they are affected by something similar. For example, bad weather might cause

    problems with microwave links and more than one base station might suffer from this

    influence. In addition to adjacent BTSs, problems in a faulty cell may also be caused by

    problems in adjacent cells.

    Investigate the adjacent Flexi Multiradio BTS LTEs to see if they have generated alarms

    that are possibly related to the malfunction.

    3.6 Referring to Alarm Manual for alarm-specific instructions

    Once the faulty Flexi Multiradio BTS LTE site has been identified, you can take a closer

    look at the alarm in theModifiable Alarm Manual application. Alarm Manualcontains

    more comprehensive information on alarms and instructions on how to recover from a

    failure.

    To get more detailed information on the fault

    1 Start Alarm Monitor(or Alarm History) if it is not yet open.2 Select the alarm you located earlier.3 Open the Alarm Manual page, check the alarm information and take corrective

    actions according to instructions, if possible.

    The Alarm Manualpages describe the alarms and diagnostic reports. They provide a

    textual explanation of the reason for an alarm and of its impact.

    3.7 Troubleshooting Flexi Multiradio BTS LTE modules using

    the local management tool

    The Flexi Multiradio BTS LTE Site Manager provides you with information on a single

    BTS and helps you locate the fault within the BTS. The Site Manager can be used locally

    or remotely to see the status and the alarm data of all the modules in a Flexi MultiradioBTS LTE site.

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    Troubleshooting Flexi Multiradio BTS LTE sites

    You will get more information on alarms and modules by selecting different views or gen-

    erating history information. The following views are useful in locating and troubleshoot-

    ing the BTS and its modules:

    The Equipment Viewshows all connected active modules and their state, whichhelps you locate the faulty module. You immediately see the status of the modules

    from the LED colour and the number of dot symbols (faulty -red/three dots; degraded

    - yellow/two dots; working - green/one dot).

    TheAlarm Paneshows the BTS alarms that are generated by itself during a Site

    Manager session. It shows the current, most recent alarms.

    Alarm History dialogshows all the alarms that have been saved into the BTS. You

    can also see alarms other than those saved in the NetAct database.

    g BSTechReports are also useful for troubleshooting purposes. They can be fetchedlocally or remotely with the BTS Site Manager.

    To troubleshoot the faulty modules using the BTS Site Manager

    1 Locate the BTS on the Top-level User Interface.2 Launch BTS Site Manager from the BTSs pop-up menu.3 Locate the faulty modules (in Equipment View) and check the status and the alarm

    data.

    4 Correct the fault or contact Nokia Siemens Networks Technical Support.

    g Because of the correlation techniques in the Flexi Multiradio BTS LTE software, only theoriginal cause of the failure is reported, not the secondary alarms which follow the

    original failure.

    For more information on troubleshooting Flexi Multiradio BTS LTE modules, see

    Replacing Flexi Multiradio BTS Units (DN0964047), Maintaining Flexi Cabinet for

    Outdoor (FCOA) (DN0964059), Maintaining Flexi Cabinet for Indoor (FCIA)

    (DN0964062) available on NOLS: http://online.portal.nokiasiemensnetworks.com.

    3.8 Generating reports on Flexi Multiradio BTS LTE perfor-

    mance

    The NetAct Reporterfunctionality is used for generating PM reports of a certain Flexi

    Multiradio BTS LTE site. The Report Builderapplication provides you with methods to

    generate ad hoc and pre-made reports on network performance. With Report Builderyou can generate your self-defined reports to visualise the performance data of network

    elements in a LTE RAN network based on performance indicators of your choice. You

    can also select different time and object level granularities for your reports according to

    your needs. For information on how to generate reports with Report Builder, see the

    applications help document.

    t In addition to analysing single network element with these reports, you can also get aconsistent overview of a region as well as locate problematic areas in the network.

    t After a KPI or a report with several KPIs has been created with Report Builder, you caneasily access them via the web by using Report Explorer.

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    3.9 Resetting the Flexi Multiradio BTS LTE site

    If the error persists or corrective actions require resetting, you can reset the equipment

    remotely.

    To reset the element manually

    1 In the Top-level User Interface, locate the Flexi Multiradio BTS LTE site object.2 Open the objects pop-up menu.3 Select Reset BTS.4 If resetting does not help, contact your local Nokia Siemens Networks Technical

    Support personnel.

    3.10 Initiating recovery actions

    With NetAct trouble ticketing solution, you can initiate recovery actions and make surethat the fault is corrected. Trouble ticketing functionality assists in trouble management

    by transferring information between NetAct and Trouble Ticket solution. You can create

    a trouble ticket based on an alarm or a managed object. You can also create tickets

    without any default information.

    g Trouble ticket creation is an optional feature in Alarm Monitorand it will only work cor-rectly if a complete trouble ticket system has been fully integrated to NetAct.

    To create a trouble ticket based on an alarm

    1 In Alarm Monitor, select an alarm (You can also create a trouble ticket from AlarmHistory or from the Top-level User Interface)

    2 In the Alarm Monitortool bar, click the Create...icon.The fields in the trouble ticket form are automatically filled in with the information on

    the alarm and the alarming object.

    3 Edit the information, if needed.4 Click Save.

    You can follow the status of the ticket in Alarm Monitor.

    For more information and instructions, see section To create a trouble ticket based on a

    managed objectin Trouble Ticket Interface Help.

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    Where to find more information

    4 Where to find more informationFor more information, see the following NetAct documents:

    For more information on Nokia Siemens Networks's monitoring functionality and theconcepts associated with managing network fault data, see Monitoring Principles.

    For more information on Nokia Siemens Networks's reporting functionality and the

    concepts associated with managing performance data, see Reporter and Perfor-

    mance Management Principles.

    For more information on Nokia Siemens Networkss LTE network management

    functionality and the concepts associated with managing your network configura-

    tion, see NetAct Configurator Principles.

    For more information on tracing subscribers and equipment, see Tracing Subscrib-

    ers and Equipmentand, for general troubleshooting information, see Tracing Princi-

    ples.

    Network element documentation

    For more information on related documents for troubleshooting Flexi Multiradio BTS

    LTE, see Troubleshooting the LTE/EPC System (DN0966512), Troubleshooting the

    eNB/Flexi Multiradio BTS (DN0966524), Monitoring and Measuring LTE RAN Per-

    formance (DN0958759), Measuring LTE RAN System (DN0958762), Tracing LTE

    RAN System (DN0958774), Real Time Monitoring LTE RAN System (DN0958786),

    Maintaining Flexi Multiradio BTS Transmission (DN0966509) documents in the LTE

    RAN System Information Set available on NOLS: http://online.portal.nokiasiemens-

    networks.com.

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    Index

    A

    Alarm History 16Alarm Manual 17Alarm Monitor14, 17

    B

    BTS managerresetting 19

    C

    Change Deliveries 10

    D

    diagnostics tools 10

    F

    Flexi Multiradio BTS LTE Site Managertroubleshooting 18

    R

    recovery 19Report Builder18reset 19

    S

    scriptsfor diagnostic purposes 10

    T

    Technical Notes 10Technical Support 11troubleshooting 8