chariot voip 测试软件使用说明

NETIQCHARIOTVOIPTESTINGBYTOMGLASSEN3RDPARTYQOSVOIPSOLUTIONSSUPPORT2WHATISCHARIOTCHARIOTTESTSANDMEASURESPERFORMANCEBETWEENPAIRSOFCOMPUTERSCHARIOTEMULATESDIFFERENTKINDSOFAPPLICATIONS,WHICHISCAPTURED,ANDANALYZEDFORTHERESULTINGPERFORMANCECHARIOTISOPERATEDFROMA“CONSOLE”,WHICHISAGUITHATISUSEDTOCREATEANDRUNTESTSTESTSARERUNBETWEENDIFFERENTCOMPUTERSTHATHAVETHE“ENDPOINT”SOFTWAREINSTALLEDTHEENDPOINTSCOLLECTPERFORMANCESTATSANDSENDTHEMTOTHE“CONSOLE”,WHICHPRODUCESREPORTSTHEFOLLOWINGRESPONSETIMECONNECTIVITYTHROUGHPUTTRANSACTIONRATE3UNDERSTANDINGENDPOINTPAIRSAN“ENDPOINTPAIR”COMPRISESTHENETWORKADDRESSESOFTWOPAIREDCOMPUTERSNETWORKPROTOCOLUSEDINTHETESTBETWEENTHEMTYPEOFAPPLICATIONTOEMULATETESTCANINCLUDEJUSTONEENDPOINTPAIR,ORHUNDREDS,USINGAMIXTUREOFNETWORKAPPLICATIONFLOWSANDPROTOCOLSFOREACHTEST,YOUSELECTAN“APPLICATIONSCRIPT”THATEMULATESANAPPLICATIONONTHENETWORKENDPOINTSUSETHESCRIPTTOCREATETHESAMEDATAFLOWSTHATTHEAPPLICATIONWOULDSENDBETWEENCOMPUTERS,WITHOUTHAVINGTOINSTALLTHEAPPLICATIONSTHEMSELVESCHARIOTCOMESWITHOVER100PREDEFINEDAPPLICATIONSCRIPTS4UNDERSTANDINGTHECONSOLECHARIOTSOPERATIONSAREFOCUSEDATITS“CONSOLE”ALLTESTFILESANDSCRIPTSARESTOREDATTHECONSOLEANDDISTRIBUTEDTOTHEENDPOINTSTHEENDPOINTSOFTWAREISGENERALLYINSTALLEDONCE,ANDRARELYTOUCHEDAFTERWARDS5HOWCHARIOTWORKSWHENYOUSTARTATEST,CHARIOTBEGINSBYDISTRIBUTINGSETUPINFORMATIONFROMTHECONSOLETOEACHENDPOINT1COMPUTERWHENATESTISRUN1YOUCREATEATESTATTHECONSOLE,THENSELECTTHERUNBUTTONTHECONSOLESENDSTHESETUPINFOTOENDPOINT1THISINFORMATIONINCLUDESAPPLICATIONSCRIPTENDPOINT2IPADDRESSPROTOCOLTOUSEWHENCONNECTINGTOENDPOINT2SERVICEQUALITYTESTRUNLENGTHHOWTOREPORTRESULTSCONSOLEENDPOINT1ENDPOINT2SETUPRESULTSAPPLICATIONSCRIPT6CHARIOTFUNCTION2ENDPOINT1KEEPSITSHALFOFTHEAPPLICATIONSCRIPT,ANDFORWARDSTHEOTHERHALFTOENDPOINT2WHENENDPOINT2HASACKNOWLEDGEDWHENITISREADYTORECEIVEDATA,ENDPOINT1REPLIESTOTHECONSOLEWHENTHECONSOLERECOGNIZESTHATTHEENDPOINTPAIRISREADY,THECONSOLEDIRECTSTHEPAIRTOSTARTTHETEST3THETWOENDPOINTSEXECUTETHEIRAPPLICATIONSCRIPT,WITHENDPOINT1COLLECTINGTHETIMINGRECORDSTHATCONTAINTHERESULTDATA4ENDPOINT1RETURNSTIMINGRECORDSTOTHECONSOLE,WHICHINTERPRETS,ANALYZES,ANDSHOWSTHERESULTS7PERFORMANCEENDPOINTSINORDERTOUSECHARIOT,THEENDPOINTSOFTWAREMUSTBEINSTALLEDONEACHCOMPUTERTOBEUSEDDURINGTESTINGTHEENDPOINTSOFTWAREISFREEOFCHARGE,ANDCANBEDOWNLOADEDFROMTHEWEBHTTP/WWWNETIQCOM/DOWNLOAD/ENDPOINTSENDPOINTSSUPPORTTHEWINDOWSPROTOCOLSTCPUDPSPXIPXUNDERWINDOWS,THEENDPOINTCANRUNASASERVICE,ORASA“ONETIME”WEBCLIENTSUPPORTEDOSWINDOWS95,98,ME,2000UNIXENDPOINTSERVICECANBESTARTEDORSTOPPEDUSINGTHE“NETSTOPNETIQENDPOINT”,ORFROMTHE“SERVICES”DIALOGBOXNETIQENDPOINT8CHARIOTFILETYPESCHARIOTTESTFILEUSESTHEEXTENSION“TST”THEAPPLICATIONSCRIPTFILEUSESTHEEXTENSION“SCR”THETESTFILEISWRITEPROTECTEDWHILEITISBEINGUSEDDURINGATESTSCRIPTFILESAREREADDIRECTLYINTOTHETESTTHATISBEINGCREATEDORMODIFIEDTHETESTFILECONTAINSASEPARATESCRIPTFOREACHENDPOINTPAIR9CHARIOTINSTALLATIONCONSOLEHARDWAREREQUIREMENTSHARDWAREANDSOFTWARENOTESX86COMPUTERPENTIUMOREQUIVALENTPENTIUM300ORBETTERISRECOMMENDED32MBOFRAMMINIMUM64MBRECOMMENDEDFORBETTERPERFORMANCEDEPENDSONRAMUSAGEOFPROTOCOLSTACKANDNUMBEROFCONCURRENTENDPOINTPAIRSHARDDISKWITHATLEAST23MBOFSPACEDISPLAYCOLORPALETTEOFATLEAST256COLORSMINIMUMRESOLUTIONOF800X600CDROMDRIVECHARIOTCANNOTBERUNFROMANETWORKDRIVEYOUMUSTINSTALLITONACOMPUTERWEBBROWSERMICROSOFTINTERNETEXPLORER50ORHIGHERISREQUIREDTORUNTHEVISUALTESTDESIGNERMICROSOFTINTERNETEXPLORER50ORHIGHERISREQUIREDTOVIEWTHEONLINEHELPFILESMICROSOFTINTERNETEXPLORERMUSTBEINSTALLED,BUTITDOESNOTHAVETOBEYOURDEFAULTBROWSER10CONSOLESOFTWAREREQUIREMENTSOPERATINGSYSTEMSSERVICEPACKSNOTESWINDOWSMEWINDOWSNT,V40SP3ORHIGHERUSETHELATESTSERVICEPACKSSP6ISNOTSUPPORTEDSP6AISSUPPORTEDWINDOWS2KSP1ISRECOMMENDEDSP2ISSUPPORTED,BUTNOTREQUIREDWINDOWSXP32BITVERSIONONLY11NETIQPERFORMANCERECOMMENDATIONSMINIMUMHARDWAREREQUIREMENTSFORRUNNINGTESTSWITH200ORMOREPAIRSPENTIUM20064MBRAMMINIMUMHARDWAREREQUIREMENTSFORRUNNINGTESTSWITH500PAIRSPENTIUM30064MBRAM12CHARIOTREGISTRATIONYOUMUSTREGISTERCHARIOTWITHTHENETIQREGISTRATIONCENTERTORECEIVEANAUTHORIZATIONKEYTHECOMPUTERMUSTBECONNECTEDTOTHEINTERNETFORANIMMEDIATEKEYSELECTOPTIONSCHANGEUSERFROMTHEFILEMENUSELECTREGISTRATIONREGISTERYOUWILLNEEDTHEREGISTRATIONNUMBER,ANDPASSWORDINORDERTOGETANAUTHORIZATIONKEYGENERATEDFROMTHEWEBPAGE,CLICKNEWUSER,ANDFILLINTHECONTACTINFORMATIONSELECTGENERATELICENSECUTANDPASTEAUTHKEYTOCOMPLETEREGISTRATIONITISPOSSIBLETOREGISTERVIATELEPHONE,FAX,OREMAILREGISTRATIONINFORMATIONLINKHTTP/WWWNETIQCOM/REGISTER/NW13CHARIOTMAINWINDOWTESTARECREATEDBYSELECTINGTHE“NEW”OR“OPEN”FILEOPTIONSTHE“DESIGN”OPTIONSLETYOUCREATETESTSUSINGAVISUALTESTDESIGNERMENUOPTIONSTHEFILEMENU,USEDTOOPENTESTFILESANDACCESSTHETESTWINDOWTHEOPTIONSMENU,USEDTOCHANGETHEDEFAULTREPORTING,POLLING,ANDDATACOLLECTIONSETTINGSUSEDBYALLYOURTESTSTHETOOLSMENU,USEDTOCREATETESTCOMPARISONFILES,CUSTOMIZECHARIOTSCRIPTSANDTEMPLATES,RUNTRACEROUTES,ANDVIEWTHEERRORLOGTHEWINDOWMENU,USEDTOSWITCHBETWEENTHECHARIOTMAINWINDOWANDTHECHARIOTTESTWINDOWTHEHELPMENU,USEDTOACCESSCHARIOTSONLINEHELPFILES14TESTWINDOWTHETESTWINDOWISWHEREYOUCREATE,RUN,ANDVIEWTHERESULTSOFATESTYOUCANADDNEWENDPOINTPAIRS,COPY,ORDELETEEXISTINGENDPOINTPAIRS,EDITENDPOINTPAIRS,ORVIEWTHESTATISTICSANDGRAPHSOFATESTYOUVERUN15TESTWINDOWDETAILSEACHENDPOINTPAIRINATESTISSHOWNASAROWINTHETESTWINDOWTHEPAIRSAREIDENTIFIEDBYAPAIRNUMBER,SHOWNONTHELEFTHANDSIDEOFEACHROWYOUCANEDITAPAIRBYDOUBLECLICKINGIT,ORBYSELECTINGITANDUSINGTHEMENUSORTOOLBARICONSTHEGRAPHICONINDICATESTHATAPAIRISSELECTEDFORGRAPHINGTHETESTWINDOWISPARTITIONEDINTOAREASACCESSIBLEBYTABSTHEFIRSTTABISFORTESTSETUPOTHERTABSLETYOUVIEWTHERESULTSOFATESTYOUCANSAVEATESTTOAFILE,OREXPORTITINAVARIETYOFFILEFORMATSTHETOOLBARICONSOFFERSHORTCUTSTOCOMMONLYPERFORMEDOPERATIONSTHEBUTTONFEATURINGTHENETIQLOGOISAHYPERLINKTOTHENETIQWEBSITE16TESTWINDOWMENUSRIGHTCLICKTOBRINGUPAFLOATINGEDITMENUWHENYOUREPOINTINGTOANYENDPOINTPAIRINATESTWINDOWWHILEINTHEGRAPHREGION,RIGHTCLICKTOBRINGUPAMENUTHATLETSYOUCHANGEGRAPHCONFIGURATIONORTHROUGHPUTUNITSMENUSINTHETESTWINDOWINCLUDETHEFOLLOWINGTHEFILEMENUTOSAVE,EXPORT,PRINT,ORCLEARRESULTSTHEEDITMENUTOADD,CHANGE,COPY,ORDELETEPAIRSTHEVIEWMENUTOCHANGEHOWPAIRSAREGROUPEDANDSHOWNTHERUNMENUTOSTARTATESTANDADJUSTITSPARAMETERSTHEWINDOWMENUTOTOGGLEBETWEENCHARIOTSWINDOWSTHEHELPMENUTOGETMOREINFORMATIONTHISMENUISIDENTICALTOTHEHELPMENUSINTHEMAINANDCOMPARISONWINDOWS17COMPARISONWINDOWCHARIOTSCOMPARISONWINDOWLETSYOUCOMPARERESULTSFROMMULTIPLETESTSCOMPARINGASMANYAS9TESTSINASINGLEWINDOWCANBEEXTREMELYUSEFUL,PARTICULARLYWHENYOURECOMPARINGBASELINERESULTSTORESULTSTAKENAFTEREQUIPMENTORCONFIGURATIONCHANGESWEREMADETHECOMPARISONWINDOWRESEMBLESTHETESTWINDOW,BUTITPROVIDESNOOPTIONSFORCREATINGNEWTESTSORFOREDITINGEXISTINGTESTS18COMPARINGTESTSTOCOMPARETESTS,YOUMUSTHAVETWOORMORETESTSOPENATTHESAMETIMEFROMTHEMAINWINDOW,CLICKOPENONTHEFILEMENUSELECTASAVEDTESTANDCLICKOKTOOPENITREPEATTOOPENALLTHETESTSYOUWANTTOCOMPARE,UPTONINEATONCEVERIFYTHATTHETESTSHAVEBEENRUNTHENCLICKCOMPARETESTSONTHETOOLSMENUINTHEMAINWINDOWTHECOMPARISONWINDOWSHOWSTHERESULTSOFALLOPENTESTS19CHARIOTSSOCKETSPORTFORRTP,TCP,ANDUDPCHARIOTSSOCKETSPORTFORRTP,TCP,ANDUDPIS10115THISPORTNUMBERISUSEDDURINGTHEINITIALIZATIONOFATESTDURINGTHEACTUALRUNNINGOFTHETEST,OTHERPORTNUMBERSAREUSEDIFTHECHARIOTSCRIPTSPECIFIES“DESTINATION_PORTAUTO”ONTHECONNECT_ACCEPTCOMMAND,ADDITIONALPORTSAREDYNAMICALLYACQUIREDFROMTHEPROTOCOLSTACKOTHERWISE,THEENDPOINTISSUINGTHECONNECT_ACCEPTCOMMANDSUSUALLYENDPOINT2USESTHEPORTNUMBERSPECIFIEDINTHESCRIPT20VOIPTESTHARDWAREANDLIMITATIONSVOIPAPPLICATIONSAREVERYTHROUGHPUTANDCPUINTENSIVETOEMULATEAVOIPCONNECTIONORCAMPUSCONFIGURATIONTHATINCLUDESMULTIPLECONNECTIONS,INCREASETHENUMBEROFTESTPAIRSTOEQUALTHENUMBEROFCHANNELS1FULLDUPLEX64KBPSVOIP2PAIRS10FULLDUPLEX64KBPSVOIP20PAIRSHARDWAREREQUIREMENTSFORVOIPTESTINGPENTIUM800WITHATLEAST256MBOFRAMINTELPRO/100SERVERADAPTORNICISIDEAL21VOIPTESTLIMITSTWOWAYTESTSTWOWAYVOICESTREAMINGTESTCODECNUMBEROFPAIRSG711200G72632KBPS250G729A8KBPS150G723M63KBPS250G723A53KBPS25022VOIPLIMITSONEWAYTESTSONEWAYVOICESTREAMINGTESTCODECNUMBEROFPAIRSG711200G72632KBPS250G729A8KBPS150G723M63KBPS200G723A53KBPS20023ENDPOINTINSTALLATIONDOWNLOADTHELATESTENDPOINTVERSIONFROMHTTP/WWWNETIQCOM/DOWNLOAD/ENDPOINTSTHEFILE“GSENDW32EXE”ISTHEENDPOINTINSTALLATIONFILEFOLLOWDEFAULTCHOICESDURINGINSTALLATIONASFOLLOWSCHECKTHEFIRSTCHECKBOXTOINSTALLPREBUILTDATAFILESCHECKTHETHIRDCHECKBOXTOSTARTTHEENDPOINTONINSTALLATIONNOTETHATNOWINDOWISSHOWNWHILETHEENDPOINTISRUNNINGBECAUSEITRUNSASASERVICEFINALLY,DONOTINSTALLAPPLICATIONMONITORINGSUPPORTINORDERTOSETTHEDSCP/TOSFIELD,YOUMUSTMAKETHEFOLLOWINGREGISTRYENTRYFORWINDOWS2000ANDWINDOWSXPADDTHEFOLLOWINGDWORDVALUEATTHEENDPOINTSHKEY_LOCAL_MACHINESYSTEMCURRENTCONTROLSETSERVICESTCPIPPARAMETERSDISABLEUSERTOSSETTING0BESURETORESTARTTHEENDPOINTCOMPUTERSAFTERYOUEDITTHEIRREGISTRYSETTINGSTHENRUNTHETEST24CREATINGANDRUNNINGAVOIPTESTTHEFOLLOWINGINFORMATIONWILLBEREQUIREDTOACCURATELYRUNAVOIPTESTINACUSTOMERNETWORKTHECODECTHEVOIPNETWORKWILLUSETHESAMPLESIZE,INMILLISECONDS,THEVOIPAPPLICATIONSENDSOVERTHENETWORKTHESIZEOFTHEJITTERBUFFERATTHERECEIVINGSTATIONSWHETHERSILENCESUPPRESSIONVADISENABLEDORNOTTHEQUALITYOFSERVICEDSCPTHATWILLBEAPPLIEDTOTHEVOICETRAFFICBYANYINTERVENINGROUTERS25CREATEAVOIPTESTTOCREATEATESTOFAVOIPIMPLEMENTATION,OPENANEWTESTFILEONTHEEDITMENU,CLICK“ADDVOIPPAIR”WHENYOURUNAVOIPTESTFORTHEFIRSTTIME,YOULLPROBABLYNOTICETHATITTAKESABITLONGERTOINITIALIZETHANATESTWITHREGULARENDPOINTPAIRSTHATSBECAUSEFORVOIPTESTING,THEENDPOINTSINEACHPAIRMUSTSYNCHRONIZETHEIRCLOCKSTOMEASUREONEWAYNETWORKDELAY26EDITINGTHEVOIPPAIRSETUPPAIRCOMMENTVERYIMPORTANTTOPROVIDEADESCRIPTIVENAMEHELPFULWHENSORTINGTHEPAIRSWHILEVIEWINGTHERESULTSENDPOINT1NETWORKADDRESSTHENETWORKADDRESSOFACOMPUTERPLAYINGTHEROLEOFENDPOINT1INACHARIOTTESTTHECHARIOTCONSOLECONTACTSENDPOINT1COMPUTERSDIRECTLY,SENDINGTHEMTHETESTSETUPINFORMATIONYOUENTEREDENDPOINT1ACTSASTHESENDEROFVOICEDATAENTERANETWORKADDRESSTHATMATCHESTHEPROTOCOLYOUREUSINGENDPOINT2NETWORKADDRESSACOMPUTERPLAYINGTHEROLEOFENDPOINT2INACHARIOTTESTENDPOINT1COMPUTERSCONTACTTHEENDPOINT2COMPUTERSWITHTESTSETUPINFORMATIONENDPOINT2ACTSSOMETHINGLIKETHERECEIVEROFVOICEDATAINAVOIPCALLCODECTHETYPEOFCODECUSEDONYOURNETWORKCHOOSEONEOFTHESUPPORTEDCODECSFROMTHELISTTHATTHENORTELVOIPEQUIPMENTISUSINGINTHECUSTOMERNETWORK27EDITINGTHEVOIPPAIRSETUPPACKETLOSSCONCEALMENTPLCNOTUSEDFORG711UANDG711ACODECSONLYPLCSHOULDIMPROVEYOURMOSESTIMATE,BUTITISONLYFACTOREDINTOTHECALCULATIONIFYOURRESULTSINCLUDESOMEDATALOSSMOSTG711CODECSTODAYDONOTSUPPORTPLCUSESILENCESUPPRESSIONNOTUSEDEMULATESTHEEFFECTSOFSILENCESUPPRESSIONALSOCALLEDVOICEACTIVITYDETECTIONONTHELINEDURINGTHEVOIPTESTVOICEACTIVITYRATENORTELIS40ANINDICATOROFTHEPERCENTAGEOFTIMEDURINGTHECALLTHATTALKINGISOCCURRINGDETERMINESHOWMUCHACTUALVOICEDATATHESIMULATEDCALLCONTAINSFORYOURTESTSYOUCANSETANYRATEFROM1TO100TOINDICATETHEAMOUNTOFVOICEDATATRANSMITTEDDURINGACALLDEFAULTVALUEIS50ONLYENABLEDIFUSESILENCESUPPRESSIONISCHECKEDOVERRIDEDELAYBETWEENVOICEDATAGRAMSSAMPLEDETERMINESTHEDATAGRAMSIZETOBEUSEDINTHEVOIPTESTVOIPAPPLICATIONSBREAKVOICEDATAINTODATAGRAMSBASEDONDELAY,ORTHEAMOUNTOFTIMEBETWEENSUCCESSIVEDATAGRAMSVALUESMUSTBEBETWEEN10AND200MSCHARIOTMAYADJUSTVALUESSLIGHTLYAFTERYOUVEENTEREDTHEMSOTHATNOPARTIALBUFFERSARESENTSETTHISVALUETOEQUALTHENORTELVOIPSAMPLESIZEINTHECUSTOMERNETWORK28EDITINGVOIPPAIRSETUPTIMINGRECORDDURATIONTHELENGTHOFEACHTIMINGRECORDTIMINGRECORDSAREUSEDTOTAKEMEASUREMENTSDURINGACHARIOTTESTTHELENGTHOFATIMINGRECORDDETERMINESTHENUMBEROFDATAGRAMSWHOSEMEASUREMENTSAREINCLUDEDINEACHTIMINGRECORDYOURTESTGENERATESTHEDEFAULTVALUEIS3SECONDS,ORABOUT150VOIPDATAGRAMSIFTHEDATAGRAMSIZEIS20MSSEEOVERRIDEDELAYBETWEENVOICEDATAGRAMS,ABOVETHETIMEYOUSETISUSEDTOCALCULATETHENUMBEROFDATAGRAMSTHATWILLBERECEIVEDINTHATTIMEPERIODIFTHEREISNOLOSTDATAORDELAYTHEENDPOINTUSESTHENUMBEROFDATAGRAMSTOBERECEIVEDWHENDETERMININGWHENATIMINGRECORDENDSITISTHEREFOREPOSSIBLETOHAVETIMINGRECORDSLONGERTHANTHEDURATIONSPECIFIED29EDITINGTHEVOIPPAIRSETUPSERVICEQUALITYREQUIREDEMULATESTHEEFFECTSOFAQUALITYOFSERVICEQOSSCHEMEONCALLQUALITYCHARIOTSPRECONFIGUREDVOIPTEMPLATEANDANYQOSTEMPLATESYOUHAVEALREADYCREATEDAREAVAILABLEINTHELISTTHETEMPLATENAMEDVOIPQOSISRECOMMENDEDFORVOIPTESTINGHOWEVER,ITISNOTSUPPORTEDBYALLENDPOINTOPERATINGSYSTEMSINITIALDELAYVALUENOTUSEDADDSASLEEPATTHEBEGINNINGOFTHEAPPLICATIONSCRIPTRECOMMENDEDFOREMULATINGTHEEFFECTSOFMULTIPLEUSERSACCESSINGTHENETWORKCHOOSECONSTANTVALUETOENTERANEXACTTIMESETTINGINMILLISECONDS,ORCHOOSEONEOFTHEFOURMATHEMATICALDISTRIBUTIONSTOLETCHARIOTSELECTASERIESOFVALUESUPPERLIMITNOTUSEDDETERMINESTHEVALUEOFTHEDELAYIFYOUVECHOSENCONSTANTVALUE,ORSETSTHEUPPERLIMITOFTHEMATHEMATICALDISTRIBUTIONIFYOUVECHOSENAMATHEMATICALDISTRIBUTIONINITIALDELAYSMUSTBEBETWEEN0AND999999999MS30CHANGINGTHEQOSDSCPVALUEBYDEFAULT,THEDSCPISNOTSETTOTHENORTELRECOMMENDEDVALUE,OF“46”FROMTHE“SERVICEQUALITY”LIST,SELECT“NEW/LISTQOSTEMPLATES”SELECT“MODIFY”,ANDCHECKTHEFOLLOWINGMINIMIZEDELAYMAXIMIZETHROUGHPUTBITFIELDSETTINGSHOULDBE101110,ORDEC4631EDITINGTHEVOIPPAIRSETUPADDITIONALFIXEDDELAYLETSYOUADDDELAYTOEMULATETHEEFFECTSOFKNOWNEQUIPMENTIMPAIRMENTS,ORANYOTHERKNOWN,FIXEDSOURCEOFDELAYONYOURNETWORKFOREXAMPLE,IFYOURETESTINGEQUIPMENTTHATADDS10MILLISECONDSOFDELAYTOEACHDATAGRAM,ENTER10MSHEREVALUESAREINMILLISECONDSRANGEIS0300MSSETTHISVALUETOEQUALYOUR“SAMPLE”SIZEFORTHEMOSTACCURATERESULTSCHARIOTDOESNOTTAKEINACCOUNTTHEDELAYOFTHEJITTERBUFFERINTHEFIXEDDELAYJITTERBUFFEREMULATESTHEEFFECTSOFJITTERBUFFERINGONYOURVOIPNETWORKJITTERBUFFERSMAYBECONFIGUREDBASEDONTIMECALLEDANABSOLUTEJITTERBUFFERORBASEDONNUMBEROFDATAGRAMSAFRAMEBASEDJITTERBUFFERMOSTNORTELVOIPAPPLICATIONSUSEAVARIABLEJITTERBUFFERTHATDYNAMICALLYALLOCATESTHEJITTERBUFFERDEPENDINGONNETWORKINSTANTANEOUSDELAYTHISVARIABLEJITTERBUFFERNORMALLYRANGESFROM20MS120MSDEPENDINGONCODECANDSAMPLESIZESETTHISVALUETOEQUALAPPROXIMATELY6090MS,DEPENDINGONCODECANDSAMPLESIZE32CODECVOICEQUALITYLIMITSMOSCODECDEFAULTDATARATEDEFAULTDATAGRAMSIZEPACKETIZATIONDELAYDEFAULTJITTERBUFFERDELAYMAXIMUMMOSG711U64KBPS20MS10MS2DATAGRAMS40MS440G72632KBPS20MS125MS2DATAGRAMS40MS422G7298KBPS20MS25MS2DATAGRAMS40MS407G7231MPMLQ63KBPS30MS675MS2DATAGRAMS60MS387G7231ACELP53KBPS30MS675MS2DATAGRAMS60MS36933RECOMMENDEDTESTPARAMETERSDEFAULTSHOWATESTRUNSDEPENDSONCERTAINPARAMETERSTHATARESETUPFOREACHTESTSTHEDEFAULTPARAMETERSCANBECHANGEDTOACCOMMODATETHENORTELVOIPSTANDARDSTHESEPARAMETERSARECHANGEDUNDERTHE“OPTIONS”“CHANGEUSERSETTINGS”34RUNOPTIONSRUNNINGINA“FIXEDDURATION”ALLOWSFORVIEWINGRESULTSREALTIME“USEFEWERCONNECTIONS”PREVENTSMULTIPLETCPCONNECTIONSFOREACHTESTPAIR35DATAGRAM“RECEIVETIMEOUT”ISTHENUMBEROFMILLISECONDSTHEENDPOINTISSUINGARECEIVECOMMANDWAITSBEFOREDETERMININGTHATASCRIPTHASENDEDIFTHEDATAHASNOTBEENRECEIVEDINTHISAMOUNTOFTIME,ENDPOINTSNOTIFYTHESENDERTHATTHEDATAWASNOTRECEIVEDALLOCATESMORETIMETORECEIVEPACKETSDUETONETWORKDELAY36THROUGHPUTUNITSCHANGESPROVIDESAMOREACCURATEGRAPHICALDISPLAYFORTHROUGHPUTAMOUNTS37VOIPPAIRDEFAULTS“CODEC”SELECTIONCHANGEISOPTIONAL“OVERRIDEDELAY”ISTHESAMPLEPERIOD,WHICHIS30MSDEFAULTFORG729,AND10MSFORG711“ADDITIONALFIXEDDELAY”PROVIDESMOREACCURATETESTRESULTSSHOULDMATCHTHESAMPLEAMOUNTABOVE“JITTERBUFFER”SHOULDBEABOUT3VOICEDATAGRAMS38UNDERSTANDINGVOIPTESTRESULTSAFTERATESTHASBEENRUN,THETESTRESULTSAREGRAPHICALLYSHOWNTHE“VOIP”TABREPRESENTSASUMMARYFORTHEACTUALMOSMEANOPIN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