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    Assuring Service Quality withNetAct Service Quality Manager 

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    Contents

    • Service Monitoring – oals

    • Service !ualit" Manager 

    • Data Source #ntegration an$ Service Mo$elling

    • %ase Stu$ies

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    Goal 1 – Integrated View on Service Quality

    Past'non(integrate$ network )icture*+

    Pro,ect -esult'integrate$ network )icture*+

    Non(i

    grate etwo

    )icture

    Service Degra$ation

    'com)laint .rom customer*

    ut what causes it0

    #ntegrate$ Network )icture

    Service alarm

    1as" to see where $egra$ation inservice )er.ormance occurs

    000000

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    Goal 2 – Reedy !or "ain "oints inService Quality Monitoring

    #ig $% &"erator – SQM Solution '

    • Provi$e an overall "icture o! service (uality achieve$ in near real(time

    • Correlate in!oration .rom $i..erent s"stems automaticall"

    • %alculate an$ onitor )ey (uality indicators in near real(time

    • Provi$e ke" )er.ormance in$icators .or "eriodical re"orts on historical serviceualit"

    • Su))ort "re(uali!ication o! service alerts inclu$ing root(cause an$ im)act$iagnosis

    • 4el) to organi5e the )rocess o. alert dis"atching 'an$ streamline it* more

    e..icientl" an$ thus re$uce the num6er o. unnecessar" stan$(6" $uties• 1na6le a trend analysis 6ase$ on )erio$ical re)orts

    • Su))ort "ro*le anageent .or im)roving service ualit" on a me$iumterm 6asis

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    Goal + – %!!iciency i"roveent

    S!M 1..icienc"#m)rovement

      8)erator )rocess

      un$erstan$ing

       )rocess / tool ma)

    s)ee$ 9 : errors

     

    Mo$ular a))roach

     ram)(u) ;

    uick wins ;

    roa$ma) .or cont<

      im)rovement

    1=ecution

       timeline to

      solution acce)tance

     Architecture ; Service

     

     ro6ust ; .le=i6le

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    Goal , – Si"licity-Radio Access Quality – Area Monitoring

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    Solution Architecture – .y"ical #uilding #loc)s

    SQM SolutionSQM Solution

    Co"etenceCenters

    ConsultancyConsultancy .ools.ools

    Pro,ect ManagementPro,ect ManagementNetActNetAct

    @e6Scri)t@e6Scri)tNetActNetAct

    S!MS!M

       P

      r  o  c  e  s  s

       P  r  o  c  e  s  s

       %  o  n  s  u   l   t  a  n   t  s

       %  o  n  s  u   l   t  a  n   t  s

    Service Assurance

    Monitoring ; -e)orting

       S  "  s   t  e  m

       S  "  s   t  e  m

       1  =  )  e  r   t  s

       1  =  )  e  r   t  s

       '   M

       M   S A

          P   P   -   S A B

       *

       '   M

       M   S A

          P   P   -   S A B

       *

    Service Mo$elling ;

    -e)ort $e.inition

       S  "  s   t  e  m

       S  "  s   t  e  m

       #  n   t  e  g  r  a   t   i  o  n

       #  n   t  e  g  r  a   t   i  o  n

       1  =  )  e  r   t  s

       1  =  )  e  r   t  s

    Data Source

    #ntegrationN&C

    ServiceManageent

    &ther /sers

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    0ey Success actors

    • %lose co(o)eration 6etween 8)erator an$ Nokia SiemensNetworks e=)erts

    • %ommitment .rom Nokia Siemens Networks an$ 8)erator 

    • %om)etent an$ motivate$ )eo)le

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    NetAct Service Quality Manager 

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    NetAct SQM in a nutshell

    Moving !ro traditional networ) alar3 onitoring to enhanced

    onitoring teleco and dataco networ)s-

    • Monitor .rom custoer "ers"ective

    • /tilise all relevant data availa*le to $etermine the overall servicestatus an$ ualit"

    • %valuate service i"act o. network .aults an$ )rioriti5e accor$ingl"

    • Alert degrading or low service (uality 

    • 1..ectivel" su""ort root cause analysis 

    • Move ore intelligence to 1st line 

    maintenance

    • Provi$es valua*le in!oration !orvarious user grou"s 

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    Service Assurance with NetAct

    access core I.networ) and service in!rastructurenetwor) and service in!rastructure

    service "lat!ors

    -eal timetra..ic $ata

    Fault Mgmt Alarms an$

    to)olog"

    Networ)Networ)levellevel

    Drill $own .or $etaile$

    trou6leshooting

    Per.ormance Mgmt

    %ounters EP#s

     Active

    measurements

    8ther $atasources

    Service !ualit"Manager 

    ServiceServicelevellevel

    #ntegrate all $ata .rom the networkto $etermine service levels an$ )ro6lems

    Su*scri*erSu*scri*erlevellevel

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    NetAct SQM – 4roduct &verview

    • ase$ on a .le=i6le rule engine

    • -ules contain the logic6ehin$ each service $e.inition

    • 1as" im)lementation o.new rules without sto))ingthe s"stem

    • #ntegrates $ata .rom an" s"steminclu$ing multi(ven$or an$ multi(technolog" networks

    • Dis)la"s the status o. services inlogical an$ geogra)hical viewsma)s can 6e inclu$e$

    • Provi$es service re)orts

    • @e6 $istri6ution o. the in.ormationa6out service )ro6lems

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    0ey Quality Indicators re!lect Service 4er!orance

    Mo6ilit" %hargingSession !oS Gra..ic

    SSN SN %NS F@

    MMS #nternet@AP HPN Nokia HPN ShellMMS ##

    HPN Gel%o HPN Hictoria

    Stethosco)esSS

    Nokia NetActP-S Monitoring

    Go)(Ievel

    %nd /ser Services

    G4RS Main unctions

    4ac)et Core %leents

     Attach attem)tsuccess ratio

    1=ternal Serviceavaila6ilit"

    'active )ro6ing*

    8verall P-S

    cell availa6ilit"

    Gotal num6er o.serve$ cells

    Service s)eci.icGP tra..ic Service s)eci.ic

    PDP conte=tactivities

    • Ee" !ualit" #n$icators 'E!#*

    give a uick overview a6out the)er.ormance an$ re.lect en$(

    user )erce)tion

    • Iist o. monitore$ E!#s caneasil" 6e customise$

    • 1=am)le+ Mo6ile Data Servicemonitoring

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    Service 5egradation 5etection

    • Ghreshol$s can 6e $e.ine$ .or all relevant E!#s – the service )er.ormance iscontinuousl" monitore$ .or all .unctions

    •  As soon as service violations are $etecte$ in an" level S!M raisescorres)on$ing service )ro6lems

    • S!M Pro6lem #ns)ector an$ )re($e.ine$ service re)orts as well as conte=tsensitive J# launch o. NetAct Alarm Monitor an$ Alarm 4istor")rovi$e valua6le su))ort .or eas" root cause anal"sis

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    %nhanced Root Cause Analysis

    • Detaile$ )ro6lem $escri)tions assist in trou6le(shooting an$

    )rovi$e a$$itional in.ormation automaticall"

    Ghe list o. )ro6lem causing

    events )rovi$es valua6le

    su))ort .or .aster )ro6lem

    resolution

    Monitor ke"

    in$icators .or

    .ault $etectionConfigData

    TrafficData

    %ollect

    relevantsecon$ar"

    in$icators .or

    )ro6lem

    anal"sis

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    Intelligent .hreshold Monitoring

    • EP# )ro.iles re)resent t")icalvalues o. the EP# over thehours o. a week

    • Pro.ile$ values .or each houro. a week are continuousl"calculate$ .rom the same

    hours o. the )revious weeks• Stan$ar$ variance $e.ines

    relia6ilit" area .or each )ro.ile

    • Jse cases – large $eviations o. latest EP# value

    .rom )ro.ile$ 't")ical* value in$icatea6normal mal.unctions

     – t")ical EP# values '.or e=am)le tra..ic*can 6e use$ to estimate )ro6lemseverit"/6usiness im)act

    G")ical tra..ic )ro.ile .or one $a"

    G")ical tra..ic )ro.ile over a week

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    Covered Networ) 5oains

    CS Core

    Monitoring

    4ac)age

    CS Core

    Monitoring

    4ac)age

    GSM QoS Monitoring 4ac)ageGSM QoS Monitoring 4ac)age 4aCo Monitoring 4ac)age4aCo Monitoring 4ac)age

    +G RAN Monitoring 4ac)age+G RAN Monitoring 4ac)age

    Internet

    VAS

    N4SNMG AG$MMS

    C

    Internet$

    GNS2G

    SGSN

    #G

    Mo*ile4ac)etCore

    #illing

    CGVAS

    SS6Networ)

    78R

    MMS Monitoring 4ac)ageMMS Monitoring 4ac)age

    $A4 G$

    #SC#.S

    #.S

    #.S

    #.S

    A9C RNC$#.S

    $#.S

    $#.S

    $#.S

    SMSCMSCMG$

    GGSN

    +G

    SGSN

    RA5I/S

    Server 

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    Monitoring GSM Services with SQM

    • Service ualit" monitore$

    .or geogra)hic areas• Mo$elling o. voice an$

    $ata 'P-S* relate$services in SS area

    • E!#s re.lect en$(user)erce)tion

    • #ntelligent service im)actcalculation .or alarms6ase$ on )ro.ile$ 't")ical*tra..ic in corres)on$ing6ase station

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    Monitoring +G:RAN Services using SQM

    • rou)ing No$es/cells accor$ing torelevant geogra)hic service areas –

    .le=i6l" $e.ine$

    • Monitoring service ualit" within eacho. these areas in$ivi$uall"

    • %orrelating alarm an$ state in.ormationwith latest )er.ormance $ata

     – %ontinuousl" calculate the currentservice status an$ $etect network)ro6lems an$ service $egra$ations

    • Showing a geogra)hical view withall $e.ine$ geogra)hic service areascolore$ accor$ing to their service status

    • S)otting )ro6lematic areas easil"an$ )rovi$ing $irect access to un$er(l"ing service )ro6lems

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    Monitoring CS Core using SQM

    • Paging Monitoring• #ntra/#nter(MS% an$ #nter(S"stem4an$over 

    • Iocation J)$ate Monitoring

    • %S %ore #nter.ace Monitoring

     – MS%/MSS

     – M@

     – 4I-

     – S--

    • Mo6ile Germinate$ an$ 8riginate$SMS

    • Signaling Iink Ioa$

    • Gra..ic Monitoring 

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    .ra!!ic Monitoring

    Monitors tra..ic 6ase$ on call $ata recor$s collecte$ .rom NetAct Gra..ica

    • Gra..ica EP#s are aggregate$ .rom relevant callrecor$s in $i..erent $imensions – %ircuit grou) – Direction num6er  – Iocation area – Mo6ile t")e '#M1#*

     – Su6scri6er grou)

    • 1=am)les .or t")ical use cases – monitor calls to voice mail6o= – monitor )re()ai$ calls – monitor roaming su6scri6ers 

    .S

    .N%S

    MSC;

    MSS

    .N%

    S

    MSC;

    MSS

    SQM

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    Monitoring 4aCo Services with SQM

    • Monitoring main P-S .unctions – Mo6ilit"

     – Session – %harging – !oS Gra..ic

    • Monitoring Mo6ile Data Services• 1n$(to(en$ service monitoring

    utili5ing active measurements

    • -esource monitoring on networkelement level incl< SNMP $ata

    • E!# e=am)le .or Mo6ile DataService+

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    4u*lic custoer re!erences

    8range Swit5erlan$ GeliaSonera Finlan$

    Net%om Norwa" 3#S Swe$en 

    K 3 Jnite$ Eing$om

    Additional non:"u*lic custoer re!erences

    • 3 Mo6ile 8)erators in APA%• 2 Mo6ile 8)erators in IAM

    • Mo6ile 8)erator in M1A

    • 3 Mo6ile 8)erators in NAM

    • 2 Mo6ile 8)erators in N1

    • & Mo6ile 8)erators in @S1Several trials ongoing in @1 %1M1A an$ APA% region in a$$itional

    In total SQM has *een sold to 2< custoers glo*ally

    Service Quality Manager Custoer Re!erence 8ist

    http://www.orange.co.uk/

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    $hat do our custoers say a*out it=

    The NOC team likes SQM very much. It has

    increased their visibility of the network

    significantly out!of!the!bo"#. They don$t

    want to miss it anymore. 

    (Brian Chaloner, NOC Manager, Vodafone Australia)

    The Service %ssurance solution & hasenabled us to solve 'roblems much more

     'ro!actively. (e have been able to see

     'roblems in a more customer!oriented

    manner and react in a more 'rioriti)ed way. It

    has im'roved the efficiency of our control

     'ersonnel significantly.

    (Sebastian Sohler, OSS Manager, Orange Switerland)

    The o'erational and efficiency gains have

     'roven very beneficial in our network

    monitoring and su''ort functions. (Da!e Coutts, Manager of Networ" #le$ent

    Manage$ent S%ste$s tea$, &')

    The solution has turned to be very useful. It

    is used as the main a''lication by our

    o'erators in their daily work to identify

     'roblems with MMS based services in a fastand reliable manner. 

    (Ola #r!i", S%ste$ Ad$inistrator,

    OSS Manage$ent, NetCo$)

    SQM is an e"cellent com'lement to alarm

    monitoring* and the main benefit would be

    for monitoring+QoS!'ersonnel by enabling

     'erformance monitoring in an efficient way > 

    (Martin ustafsson, Manager *erfor$ance and

    Configuration Manage$ent for &+S)

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    5ata Source Integration and Service

    Modelling

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    Service Modelling

    Develo)ing Service Mo$els

    •  Activate e=)ert knowle$ge – NSN internal an$ o)erator e=)erts• #$enti." an$ integrate relevant $ata sources

    • a* De.ine a6stract service mo$el

     – #$enti." Ee" #n$icators 'E#*/ Service Attri6utes

     – De.ine -ules .or E# calculation an$ service alarm generation

     – Set threshol$s

     – %heck .or s)eci.ics .or e=am)le the usage o. )ro.ile$ values

     – #$enti." relevant secon$ar" in.ormation .or root cause anal"sis

    6* #m)lementation an$ testing

    • De.ine views – gra)hical re)resentation o. the service mo$el

    • Gake service mo$el into use an$ .ine(tune

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    Native 5ata Source Integrations

    NetAct -egional %luster – FM PM Go)olog"

    eneric Data %ollection Framework

    • 4P 8)enHiew 8)erations

    • SNMP $ata

    • Data6ase ueries – S!I

    • MMI ueries

    • Ge=t .iles – AS%## LMI %SH B

    • B

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    %asy SQM Rule Creation via $i?ard

    J# $riven rule creation allowing

    rule creation withoutan" knowle$ge o. the

    S!M )rogramming language

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    %asy SQM Rule Creation via Rule $i?ard

    • J# $riven rule creation

    allowing rule creation withoutan" knowle$ge o. the 2 rule

    s"nta=

    • -ules $e.ine$ 6" con.iguring)re($e.ine$ tem)lates

    • @i5ar$ creates 2 s"nta=which ma" 6e mo$i.ie$ to

    a$$ s)eci.ic logic

    • Harious tem)lates availa6leto mo$el t")ical use cases

    • Gem)lates can 6e com(6ine$ to construct

    more com)le= rules

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    Case studies

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    Custoer Case %@a"les

    3JE

    8range %4

    http://www.orange.co.uk/

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    Custoer Case Study

    S!M at 4utchinson 3 JE

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    0ey Criteria !or selecting NetAct SQM

    • Multiven$or ca)a6ilit"

    • Su))ort .or common o)erations an$ strateg" throughoutall network $omains

    • %om)rehensive centrali5e$ management solution

    •  A6ilit" to co)e with tough )er.ormance an$ ca)acit"

    reuirements• 1as" solution scala6ilit" an$ e=ten$i6ilit" o)tions

    • #ntegration ca)a6ilit" into e=isting 8SS environment

    • Su))ort service centric o)erations

     8ne )ro$ucti.ie$ solution re)lacing all the inhouse tools

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    +G RAN MonitoringNo)ia and N%C +G RAN – +/0 

    &"erator challenge 

    • Manage the com)le=it" o. networks• Iimite$ visi6ilit" o. network .aults

    • Ia6orious trou6le(shooting )rocess

    • Decou)le$ in(house tools .or each -AN ven$or 

    • Maintain goo$ network an$ service ualit"

    No)ia solution 

    • NetAct Service !ualit" Manager 

    • N1% FM an$ PM a$a)tation

    • 3 -AN Monitoring Packages

    • %onsultanc" services

    0ey !eatures 

    • %orrelation o. FM PM an$ other relevant $ata

    • #ntegration with e=ternal a))lications

    • Su))ort same use cases across network ven$ors

    Custoer *ene!its-

    • 4armoni5e$ monitoring )roce$ures .or Nokia an$ N1% -AN

    • Faster network .ault $etection

    • Fault )rioritisation accor$ing to customer im)act

    • -e$uce$ root cause anal"sis e..ort

    • Maintain sta6le network )ro(activel"

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    SQM Sco"e

    • S!M 4@ runs on a single -P&&&: server

    an$ is connecte$ to 2 NetAct regionalclusters

    • 3 -AN monitoring 'Nokia an$ N1%*a6out C::: No$es

    • Packet core monitoring

    • Mo6ile 6rowsing an$ vi$eo streamingmonitore$ via #ns)ector )ro6ing'show case .or 8SS J*

    • %S %ore monitoring

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    Multi:Vendor +G RAN Monitoring

    • 8ne centric view towar$sthe access network

    • 4armonise$ monitoring .or 6othven$ors 'same use cases mo$ele$*

    • PM $ata )rocesse$ in min intervalls'a6out ::: ::: raw counters )erintervall*

    • Decrease$ )ro6lem $etection time

    • -e$uce$ manual e..ort .or trou6leshooting

    • S!M was a6le to re)lace inhouse tools

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    SQM Architecture

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    Custoer S"eci!ic /se Cases

    S!M at 8range Swit5erlan$ '%4*

    S

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    .ools and Syste Integration

    Inspector  TrafcaNetAct Regional Cluster

    Monitor

    Reporting

     Test results

    Alarms PerormanceData

     Trafc data

    RelevantAlarms

    Service Qualitytrendsistory

    ADC MetricaRelevantReports

    SQM

    Creationo TT

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    &2 © Nokia Siemens Networks Presentation / Author / DateFor internal use

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    &3 © Nokia Siemens Networks Presentation / Author / DateFor internal use

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    M it i I t ti l V i C ll & C7

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    & © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Monitoring International Voice Calls – &range C7

    8)erator challenge 

    • Hoice calls to international $estinations

    )rovi$e high revenue to the networko)erator 

    • 8range %4 strives .or highest serviceualit" .or international tra..ic at lowesto)erational cost

    • 8range was searching .or a highl"e..icient monitoring solution to assureservice ualit" .or international calls

    Nokia solution 

    • NetAct Service !ualit" Manager 

    • NetAct Gra..ica

    • %ustomi5e$ Monitoring Package

    • %onsultanc" services

    Ee" .eatures

    • #ntegration o. Gra..ica

    • %om)arison with t")ical Gra..ic )atterns

    • 1asil" un$erstan$a6le visuali5ation

    Custoer *ene!its-

    • 1..icient monitoring o. the voice tra..ic to the to) : international $estinations

    • Faster service $egra$ation $etection an$ a su6stantiall" shorter service $own time

    • 8range chooses the 6est international carrier .or each $estination in real time

    • Measura6le $ata conve"ing the customer )erceive$ ualit" .or international calls

    • -e$uce$ customer com)laints cause$ 6" )ro6lems in international voice calls

    .h 4 t i $ ) t S

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    &7 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    .he 4roect – ive $ee)s to Success

    • I"leent the /se Cases 

    • %lose coo)eration 6etween8range an$ Nokia

    • -egular )hone con.erence

    • S)eci.ication reviews

    • , wee)s

    Vision

    Showcase

    Identi!y data sources

    S"eci!y service design anddata correlation rules

    I"leentation

    • .a)e Solution into use

    • #nstallation ; #ntegration

    • Fine tuning

    • 8n(site su))ort

    • 1 wee)

    Monitoring International Voice Calls &range C7

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    &> © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Monitoring International Voice Calls – &range C7I"leentation Results

    NetActSQM

     Trafc dataS!itc"#International

    Carrier $%

    S!itc"#International

    Carrier &%

    C'R ((

    C'R ((

    'ate!ay MSC

    NetAct

     Trafca

    http://www.orange.co.uk/

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    &? © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Screenshot &range C7 GSM Area Monitoring

    http://www.orange.co.uk/

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    &C © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Screenshot &range C7 – GSM Area Monitoring

    Custoer S"eci!ic /se Cases

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    : © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Custoer S"eci!ic /se Cases

    Mo6ile Data Service Monitoring

    .a@i Service

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    © Nokia Siemens Networks Presentation / Author / DateFor internal use

    .a@i Service

    • Tai Ser!ice is an en$(user service o..ere$ an$ $elivere$ 6" a mo6ile

    network o)erator to several ta=i o)erators 6ase$ on+

    • Dis)atching .rom ta=i hea$uarter to mo6ile terminal in ta=i car 

    • Mo6ile P-S connection to ta=i internet server

    • Four $i..erent solutions are use$ 'Mo6iso.t Semel Ho=)oint DDS*

    • Ga=is o)erate in several geogra)hical regions

    • 4igh availa6ilit" '2&h )er $a" >$a"s )er week* reuire$

    • 8utages occurre$ in the )ast which have not 6een recogni5e$ in network

    monitoring 6" the o)erators

    Pro)ose$ solution .or this )ro6lem is to monitor the service .rom en$ user

    )erce)tion with NetAct S!M 'an$ o)tionall" with #ns)ector*

    .a@i Service Monitoring Solution

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    2 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    .a@i Service Monitoring Solution – ocus and 0ey Advantages –

    • Ghe Ga=i Service Monitoring Solution .or NetAct S!M ena6les the

    assurance o! the .a@i Service in the network o)eratorOs network• 8..ers "re:de!ined service odelling o. the Ga=i Service

    • Integrates easily into o)erators environment

    • /tili?es relevant data sources .or e=am)le alarms an$ counters .romnetwork elements an$ alarms .rom Gra..ica

    • 5etects networ) and service "ro*les relate$ to the Ga=i Service notnoticea6le 6" )ure alarm monitoring

    • #$enti.ies $eviations .rom t")ical service utili5ation )atterns – .or e=am)le$eviations in tra..ic .low

    • Su))orts o)erators to .ocus on most urgent )ro6lems i

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    3 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    SQM Service View !or Ta"i Service

    1n$ JserHiew

    .a@i 6

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    Custoer S"eci!ic /se Cases

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    © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Custoer S"eci!ic /se Cases

    Hoice over #P Service Assurance

    Service Assurance !or VoI4 Services

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    7 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Service Assurance !or VoI4 Services

    Service

    ManagementServices – VoI4 4&.S and VoI4 SI4

    MSAN

    hi9 DE2D

    S#C

    ACM%

    MGChi%F2

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    4&.S Access – VoI4 7 2,

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    ? © Nokia Siemens Networks Presentation / Author / DateFor internal use

    R.4 ; 7>2,

    4&.S Access – VoI4 7>2,

    hi9 DE2D

    4

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    C © Nokia Siemens Networks Presentation / Author / DateFor internal use

    @5S8 Access – VoI4 via SI4

    hi9 DE2D

    S#C

    ACM%3

    4S#P

    5S8

    Custoers

    R.4 ; SI4

    R.4

    MSC

    Server 

    NVS

    SI4

    I4A

    2

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    .o":8evel layer in SQM Service Model

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    7 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    .o":8evel layer in SQM Service Model

    5rill 5own !or ore In!oration

    Networ) Grou" 8ayer o! VoI4 4&.S

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    72 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Networ) Grou" 8ayer o! VoI4 4&.S

    5rill 5own !or ore In!oration

    5S8AM 8ayer o! VoI4 4&.S

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    73 © Nokia Siemens Networks Presentation / Author / DateFor internal use

    5S8AM 8ayer o! VoI4 4&.S

    Additional 5S8AM 0ey Indicators

    • %all Holume

    • Packets receive$/transmitte$

    • %all Accurac"

    • Dro))e$ %alls

    Networ) Grou" 8ayer – Alternative 5rill:5own

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    7& © Nokia Siemens Networks Presentation / Author / DateFor internal use

    Networ) Grou" 8ayer Alternative 5rill 5own

    5rill 5own !or ore In!oration

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    .han) BouH