讲义案例文件

MultiModem®ZBAMT5634ZBA-SeriesUserGuidePNS000286E,VersionThispublicationmaynotbereproduced,inwholeorinpart,withoutpriorexpressedwrittenpermissionfromMulti-TechSystems,.s.Copyright©2006,byMulti-TechSystems,Multi-TechSystems,.makesnorepresentationsorwarrantywithrespecttothecontentshereofandspecificallydisanyimpliedwarrantiesofmerchantabilityorfitnessforanyparticularpurpose.Furthermore,Multi-Tech .reservestherighttorevisethispublicationandtomakechangesfromtimetotimeinthecontenthereofwithoutobligationofMulti-TechSystems,.tonotifyanyororganizationofsuchrevisionsorchanges. 02/12/03Initial01/10/04ChangeTechnicalSpecificationforPowerRequirements;removeModem-on-Holdreferences;removereferencestoself-resetting.10/29/04ChangedCountryCodeterminologytoCountry/Region08/04/05AddnewRecyclingStatement(WEEE).Delete“RemovingOldModemDrivers”sectiononpage11.Changedataratefrom4400to14400onpage28.RemoveBBSreferenceonpage30.FixWeblinkonpage12. sMultiModem®ZBA,Multi-Tech,andtheMulti-Techlogo sofMulti-Tech ,Windows98,NT,Me,2000,anare sorsof theUnitedStatesand/orothercountries.WorldMulti-TechSystems,.2205WoodaleDriveMoundsView,Minnesota55112By(33)1-646109:91(44)118959U.S.andRestoftheInteAddress:TableofChapter1– Chapter2– Safety Step1:ChangetheInternal Step2:ConnecttheModemtoYour Step3:InstalltheModem Step4:ConfiguretheModemforYourCountryorRegion–GlobalProduct Step5:InstallDommunicationsSoftware–All Chapter3– AbouttheFront Phools V.92 Chapter4–ATCommands,S-Registers,andResult Chapter5–Remote Basic Chapter6–Callback ChangingtheSetup TurningCallbackSecurityOnand SettingCallbackSecurityMessage AssigningCallbackPasswordsandPhone Chapter7– NoneoftheIndicators TheModemDoesNotRespondto TheModemCannotConnectWhen TheModemDisconnectsWhile ModemCannotConnectWhen FileTransferIsSlowerThanItShould DataIsBeing ThereAreGarbageCharactersonthe TheModemDoesn’tWorkwithCaller FaxandDataSoftwareCan’tRunattheSame AppendixA–Technical AppendixB–UpgradingtheModem’s Upgrade AppendixC–Regulatory art15 art FaxBranding Industry EMC,SafetyandR&TTEDirective InternationalModem New Warning SouthAfrican AppendixD–WasteElectricalandElectronic WEEE(WasteElectricalandElectronicEquipment) AppendixE–InstallingaModemunder AppendixF–ConnectingtoaCisco AppendixG–Warranty,Service,andTechnical Technical Inte ChapterChapter1–CongratulationsonyourpurchaseoftheMultiModem®ZBAmodem.Youhaveacquiredoneofthefinestinligentvoice/data/faxmodemsavailabletodayfromoneoftheworld’soldestmodemmanufacturers:Multi-TechSystems,.TheMT5634ZBA-Seriesisavailableinglobalandnon-globalbuildswithandwithoutthevoicefeature.TheMT5634ZBAglobalproductisapprovedin40+countries.TheMT5634ZBAwiththevoicefeaturesupportsvoicandafull-duplexspeakerphone.Thisallowsyouandthecallertospeakandlistenatthesametime.Thisuserguidewillhelpyoutoinstall,configure,testanduseyourFeaturesV.90/56KMax.DataxxV.92/56KMax.DataxxxGlobalApprovalinManyCountriesforWorldwidexxxVoicexCallbackxxxxxxxxDTMFTonexxxPhoneNumberStorageforAutomaticorDTRxxxxV.90orV.92RelatedFeatures(seexxxxRemotexxxxErrorxxxxCallerID(U.S.xxxxMulti-LanguageData/FaxSoftwareforxxxxWindowsPlug yxxxxFlashMemoryforEasyxxxxTenYearxxxxFeaturesSpecifictoSpeed–V.90/56KdownloadspeedsfromV.90serversand33.6KuploadFax–Class1and2faxingatCompression–V.42FeaturesSpecifictoSpeed–V.92/56Kdownloadspeedsand48KuploadspeedswhenconnectingwithV.92Fax–Class1,1.0,2,and2.1faxingatspeedstoV.34/33.6Kbps(SuperCompression–V.44compressionimprovesdatathroughputQuickConnect–Quickconnectcancutthetimerequiredforadial-upmodemto“handshake”toanISPorotherconnectioninhalf.PleasenotethatsomeV.92featuresareturnedoffinthefactorydefaultconfiguration,andmayneedtobeturnedon,dependingonyourneeds.ChapterChapter2–Thischaptershowsyoustep-by-stephowtosetupyourMulti-TeT5634ZBASafetyUsethisproductonlywithUL-andCUL-listedcomputers(U.S.A.andToreducetheriskoffire,useonly26AWG(.41mm)or ephoneNever ephonewiringduringalightningNeverinstall ephonejackinawetlocationunlessthejackisspecificallydesignedforwetNevertouchuninsulated ephonewiresorterminalsunlessthe ephonelinehasbeendisconnectedatthenetworkinterface.Usecautionwheninstallingor ephoneAvoidusing ephoneduringanelectricalstorm;thereisariskofelectricalshockfromDonotuse ephoneinthevicinityofagasThisproductmustbedisconnectedfrom workinterfacewhenStep1:ChangetheInternalThisstepisrequiredonlyYouintendtousethemodemonaleasedYouintendtoaddamonophonicexternalspeakertoyourmodemwiththevoiceoption.Nochangesareneededforstereo.Thiswillrequireyoutoopenthemodemandmoveoneormorejumthemodem’sprintedcircuitWarning:ThefollowingproceduremustbeperformedbyauthorizedserviceCaution:Thecircuitboardcanbeharmedbystaticelectricity.Beforeyouopenthecase,touchagroundedobject,suchasthemetalchassisofyourcomputer,todischargeanystaticelectricityinyourbody,thentouchthemetalsofthemodem’sRS-232connectortoensurethatthereisnovoltagedifferencweenyouandthemodem.OpeningtheIfthemodemisconnected,turnitoffandremoveallconnectingcables(ludingthepowerandlineTurnthemodemupsideOnthebottomofthemodemaretwoscrews,whichholdthecasetogether.Removebothscrewsandsetthemaside.TurnthemodemrightsideRemovethetoppartofthemodemToclosethemodem,reverseStepsLocationoftheNote:J8istheJumperfortheModemwithVoiceAsshippedfromthefactory,yourmodemisconfiguredfornormaldial-upoperation.Thatis,themodemmustdialaphonenumbertoconnecttoanothermodem.Tousethemodemonaleasedline,youmustchangejumperJ10toselectleasedlineoperation,andJ11toselectwhetheritwillbetheoriginatingortheansweringmodem.Ifdial-upoperationisselected,J11hasnoeffect.SeeChapter3foradditionalleasedlineThefactorydefaultistheanswerposition.ThismakesthemodemtheansweringmodemontheleasedTousethemodemonaleasedline,movetheJ10jumperplugfromthedefauial-uppositiontotheleasedlineposition.Tomakethemodemtheoriginatingmodemontheleasedline,movetheJ11jumperplugtotheoriginateChangingtheVoiceThespeakerjumper(J8)isnexttotheexternalspeakerThefactorydefaultpositionofthevoicejumperissetforastereospeakerorsoundcard.AjumperplugcoversbothpinsoftheJ8jumper.Tousethemodemwithamonophonicexternalspeaker,removethejumperplugfromtheJ8jumperpins.Youcanstoreitbycingitononejumperpin.Step2:ConnecttheModemtoYourTurnoffyourcomputer. cethemodeminaconvenientlocation,andthenconnectittoyourcomputer’sserialport,theephonelineorleasedline,ACpower,and,optionally,yourephone.ConnectionsConnectionsWithConnections-NoConnecttheModemtoYourPlugoneendoftheserialcableintotheRS232connectoronthemodemandtheotherendintoaserialportconnectoronyourcomputer,suchasCOM1orCOM2.ConnecttheModemtotheephonePlugoneendofthemodularephonecableintothemodem’sLINEjackandtheotherendintoastandardphonewalljack.Important:TheLINEjackisnotinterchangeablewiththePHONEjack.DonotplugtheephoneintotheLINEjackorthelinecableintothePHONEjack.Note:Regulatoryagenciesmayimposecertainrestrictionsonequipmentconnectedtopublicephonesystems.Formoreinformation,seeAppendixA.ConnecttheTwo-WireLeasedLine(LeasedLinePlugoneendofatwo-wireephonecableintothemodem’sLINEjackandtheotherendtoatwo-wireleasedlinewalljackorterminals.Note:Beforeyoucanusethemodemonaleasedline,youmustfirstchangetheinternaljumpers.See“Step2:ChangetheInternalJumpers.”ConnecttheModemtoaPhoneIfyouwanttoconnecta osamelineasthemodem,plugitintothemodem’sPHONEImportant:ThePHONEjackisnotinterchangeablewiththeLINEjack.DonotplugtheephoneintotheLINEjackorthelinecableintothePHONEjack.ConnectaMicrophone(VoiceForvoicorspeakerphoneapplications,pluganunamplifiedmicrophoneintotheMICjackonthesideofthemodem.Themicrophoneshouldhaveastereo1/8-hminiplug.DonotuseamonophonicForspeakerphoneorvoicapplications,usea1/8-hplugmale-to-malestereopatchcordtoconnecttheSPKRjackonthesideofthemodemtotheLINEINjackonyoursoundcard.IfyoursoundcarddoesnothaveaLINEINjack,useitsMICjack.Thestereomale-to-malepatchcordcanbepurchasedatalocalPCretailstore.Ifyoudonothaveasoundcard,youcanpluganunamplifiedspeakerdirectlyintotheSPKRConnecttheModemtotheACPowerThepowerswitchislocatedontherightsideofthemodem.MakesureitissettoFortheglobalproducts,plugtheuniversalpowersupplyintothePWRjackonthemodem.Thenplugoneendofthecountry-specificpowersupplycordintotheuniversalpowersupplyandtheotherendintoapoweroutletorpowerstrip.ForNon-globalproducts,plugthepowersupplyleadintothePWRjackonthemodem.Plugthetransformerintoapoweroutletorpowerstrip.Note:Useonlythepowersupplydwiththemodem.Useofanyotherpowersupplyvoidsthewarrantyandcandamagethemodem.Testthemodembyturningiton.Whenyouturniton,themodemperformsadiagnosticself-test,afterwhichthe56indicatorshouldlight.Ifthisdoesnothappen,checkthatthepowerswitchison,thepowersupplyissolidlyconnected,andtheACoutletislive.Ifthesemeasuresdonotwork,seeChapter7,Step3:InstalltheModemIfyouuseWindows95orabove,youmustinstallthemodemdriver.ThemodemdriverlsWindowshowtocontrolthemodem.IfyouuseaLinuxoperatingsystem,pleaseseeAppendixD.Ifyouuseanotheroperatingsystem,pleaserefertoitsationformodeminstallationinformation.InstallingtheModemMakesureyourmodemisconnectedproperly,andthenturnonyourcomputer.WindowsshoulddetectyournewmodemandopentheInstallNewModemwizard.Note:IfWindowscannotfindamodem,yourmodemmaybeturnedoff,itmaybepluggedintothewrongconnectoronyourcomputer,ortheserialcablemaybefaulty.See“NoneoftheLEDsLightWhentheModemIsTurnedOn”and“TheModemDoesNotRespondtoCommands”hapter7,InsertthesystemCDintoyourCD-ROMdrive,andthenclickOK.Windowsinstallsthemodemdriver.ClickFinishtoForWindowsNT,theInstallNewModemwizardpresentsoneadditionalpromptbeep2.Atthisprompt,selectDon’tdetectmymodem;Iwillselectitfromalist.ThenclickNext.Adialogboxwithalistofmanufacturersandalistofmodemmodelsappears.Selectyourmodem.ContinuewithStep2above.Step4:ConfiguretheModemforYourCountryorRegion–GlobalProductOnlyDifferentcountrieshavedifferentrequirementsforhowmodemsmustfunction.Therefore,beforeyouuseyourmodem,youmustconfigureittomatchthedefaultsofthecountry/regioninwhichyouareusingit.Youmustalsodothisifyoumovethemodemtoanothercountry/regionafterithasbeenconfiguredforthefirstcountry/region.Youcanuseoneoftwoconfigurationmethods:UsetheGlobalWizardtoConfigureYourUseATCommandstoConfigureYourUsingtheGlobalWizardtoConfigureYour InserttheMultiModem®ZBAsystemCDintotheCD-ROMdrive.The shouldClickInitialSetupandCountry/RegionChooseRunGlobalWizardfromCD.Thiswillnotloadthewizardontoyourharddrive,InstallGlobalWizardontheHD.ThiswillinstallthewizardontoyourharddriveforfutureTheGlobalWizarddialogboxappeared.ClickTheGlobalWizardsearchesforyourmodemandidentifiesit.ClickSelectthecountry/regioninwhichthemodemwillbeused.ClickReviewyourcountry/regionchoice.Ifitiscorrect,clickNexttoconfiguretheWhenGlobalWizardannouncesthattheparametershavebeenset,clickFinishtoUsingATCommandstoConfigureYourNon-WindowsuserscanconfigurethemodemusingATcommands.Youmustenterthesecommandsinyourcommunicationprogram’sterminalwindow.RunPhToconfigurethemodemforaspecificTypeAT%T19,0,nn,wherennisthecountry/regioncodeinhexadecimalnotation.ClickENTER.ThemessageOKdisys.Toverifythatthecorrectcountry/regionhasbeenconfigured,ATI9andclickThecountry/regioncodedis ATCommand Resultcode Alistofcountry/regioncodescanbefoundontheMulti-TechWebsite Thenclickonglobalmodems.TheGlobalModemCountryApprovalspagedisys.Onthispageyoucanviewapprovals,configurationstringsandresponsesbycountryandproducts.Step5:InstallD Software–AllProductsDommunicationssoftwareisdesignedtoconfigureamodemsoitcansendandreceivemessages.YourMulti-Techmodemoperatesunderthecontrolofadommunicationsprogram,suchasPhools, ludedwiththemodem.Themodemcsooperateunderothergeneral-purposedommunicationprograms,suchasWindowsHyperTerminal.ToinstallPhools,inserttheMT5634ZBAsystemCDintotheCD-ROMdrive;clickthePhoolsicon.Youwillbeaskedtochooseyourlanguage.ThesoftwareautomaticallyloadsontoyourPC.Toconfigureyourmodem,followthesesteps:AfterinstallingPhools,runtheFindthedialogboxor thatletsyouselectyourmodem.(InWindowsTerminalselectSettings|ModemCommands;inHyperTerminalselectFile|Properties|PhoneNumber;andinPhoolsselectConfigure|GeneralConfiguration|Communication|ChangeModem.Chooseyourmodemfromtheprogram’smodemlist.Ifitisn’tlisted,chooseagenericmodemandmodifythesettingsasnecessary.Changethemodeminitializationstring,ifnecessary.Thefactorydefaultconfigurationworkswellformostpurposes.Toloadthefactorydefaultconfiguration,useAT&F.Toloadacustomconfigurationthatwassavedusingthe&Wcommand,useATZ.ForaMacintosh,theinitializationstringshouldludethe&D0command.Ifyoudonotwantthemodemtoalwaysanswerthephone,addS0=0tothestring.TouseCallerIDwiththemodem,addS0=2tothestring(CallerIDinformationissentbetweenthefirstandsecondrings,sothephonemustringatleasttwicebeforethemodempicksuptheline).Dependingonthesoftware,youmighthavetoendthestringwithacarriagereturncharacter(^M).Note:Tochangethemodem’sdefaultconfiguration,typenewcommandsinthecommunicationprogram’sterminalwindow,addingthe&Wcommandtostoretheminthemodem’snonvolatilememory.Forinstance,tocreateadefaultconfigurationthatturnsoffautoanswer,typeAT&FS0=0&W.ThenewconfigurationloadsautomaticallywheneverthemodemisturnedonorreceivestheATZcommand.Selecttheportthemodemisconnectedto(normallyCOM1orSelectyourserialportspeed.Thiscanbelabeled“umspeed,”“DTEbps,”or“baudrate.”Ideally,ifyouusedompression,youshouldsetyourserialportbaudratetofourtimesthemodem’sumtransmissionspeedorfaster;however,fewfilescanbecompressedenoughtorequirespeedsthathigh,andnotallserialportscanhandlespeedsthathigh.Ifthecommunicationprogramhasanautobaudselection,makesureitisdisabled.Autobaudappliesonlytooldermodems,andcancauseproblemsifenabled.Iftheprogramallowsyoutoedittheno-connectmessages(NOCARRIER,BUSY,NOANSWER,NODIALTONE),makesurethereisnospacweenDIALandTONEinNODIALTONE.Formoreinformation,refertothesoftwaresorthesoftware’sonlinehelpforotherconfigurationchoicesandforinformationonhowtousethemodemwithothercommunicationprograms.Inmostcasesyoucanacceptthedefaultvalues.ChapterChapter3–AbouttheFrontTheLEDindicatorsonthefrontpanelindicatestatus,configuration,andTD–TransmitData.FlasheswhenthemodemistransmittingdatatoanotherRD–ReceiveData.FlasheswhenthemodemisreceivingCD–CarrierDetect.Lightswhenthemodemdetectsavalidcarriersignalfromanothermodem.Itisonwhenthemodemiscommunicatingwiththeothermodem,andoffwhenthelinkisbroken.56–56KMode(56,000–28,000bps).LightswheneverthemodemissetfororconnectsusingtheV.90orV.92TheactualconnectionspeeddependsonISPservercapabilitiesandline33–V.34Mode(33,600–2,400bps).LightswheneverthemodemconnectsusingtheV.3414–V.32bisMode(14,400–7,200bps).LightswhenthemodemconnectsusingtheV.32bisprotocol.ThemodemcanconnectatlowerthanV.32bisspeeds,butnospeedindicatorlightsduringtheconnection.OH–Off-Hook.Lightswhenthemodemisoff-hook,whichoccurswhenthemodemisdialing,online,oransweringacall.Flasheswhenthemodempulse-dials.TR–TerminalReady.Lightswhenacommunicationsprogramisusingthemodem.Itmeansthemodemisreadyforanoutgoingor ingcall.Itgoesoffwhenthecommunicationsprogramdisconnectstheserialport.Whenitgoesoff,aconnectedmodemwillalsodisconnect.EC–ErrorCorrection(V.42).LightscontinuouslywhenthemodemisinV.42errorcorrectionmode,andflasheswhencompressionisactivated.FX–Fax.LightswhenthemodemisinfaxNote:Whenyouturnonthemodem,theprotocolindicatorsflashbrieflyasthemodemdoesaself-test,afterwhichthe56indicatorlights.Afcall,theindicatorfortheprotocolusedintheconnectionremainslituntilanothercallismadeorthemodemisreset.Ifyouconnectatarateunder14,400bps,allprotocolindicatorsremainoffaftertheconnectionisbroken,eventhoughthemodemisstillturnedon. oolsWiththePhoolscommunications ludedwithyourmodem,youUploadanddownloaddataSendfaxesatpreset ingvoicemessagesandRetrievestoredmessages,faxes,and ephonenumbers(ephonenumberretrievalrequiresCallerIDservicefromyourephone).PrintareceivedFordetailedinformationaboutoperatingyourmodemunderPhools,pleaserefertothePhoolsonlineLeased-LineTheMultiModem®ZBAmodemcanbeusedonatwo-wireleasedAleasedlineisaprivate,permanentephoneconnectionbetweentwopoints.Unlikenormaldialupconnections,aleasedlineisalwaysactive.Themodemsautomaticallyconnectwhentheyareattachedtothelineandareturnedon.Becausealeasedlineisalwaysactive,oneofthetwomodemsonthelinemustbeconfiguredastheoriginatemodemandtheotherastheanswermodem;however,itdoesnotmatterwhichiswhich.Intheeventofaninterruption,leased-linemodemsautomaticallyreconnectwhenthedatalineorpowerisOpenthemodemandchangejumperJ10toselectleased-lineoperation,andjumperJ11toselecteitheroriginateoransweroperation,dependinguponhowyouintendtousethemodem.SeeChapterforthedetailedprocedure.ConnectamodularephonecabletotheLINEjack.Connecttheotherendofthecabletoatwo-wirelease-linejackorterminalsdbytheephone.TurnontheV.92BecausetheV.92protocolisnewandstilllargelyunsupportedbycentralservers,somefeaturesaredisabledbydefaultintheinitialreleaseoftheMT5634ZBAmodem.ThissectiondescribesthestatusoftheV.92featuresintheinitialrelease.PleasenotethattheV.92specialfeaturesrequireconnectiontoaV.92-capableserver.General.TheV.92protocolisenabledbydefault.IftheMultiModem®ZBAmodemdetectsanotherV.92modemduringthehandshakephase,theywillconnectinV.92mode;otherwise,theywillconnectinV.90modeorthehighestmutuallyacceptablemode.TheATcommandthatcontrolsthisis+MS=.Commands.ATcommandsspecifictotheV.92protocolandthenewV.44compressionprotocolbeginwiththepluscharacter(+).Thesecommandsareinthis.Also,theS109registerhasbeenmodifiedtosupportPCMUpstream.PCMUpstreamisdisabledbydefault.Touploadfilesatspeedsabove33.6kbps,youmustenablePCMUpstreamusingthecommand+=1.PleasenotethatthisrequiresconnectiontoaV.92-capableserver.Also,pleasenotethatseuploadspeedsareaffectedbylineconditions,meetingthepreviousrequirementscannotguaranteespeedsabove33.6kbps.QuickConnect.QuickConnect,whichshortensthehandshaketimewithanotherV.92modem,isdisabledbydefault.Toenableit,usethecommand+PQC=0.QuickConnectspeedsconnecttimesbyskipthelestduringthehandshakeandusingtheconfigurationfromthelastd onnection.QuickConnectworksbestwhenlineconditionsareconsistentfromcalltocall.Iflineconditionsarevariable,enablingQuickConnectcanactuallyreasetheconnecttimeslightly.ConnectingtotheYourMulti-TeodemisyourgatewaytotheInteandtheWorldWideWeb.ToaccesstheInteandWebviayourmodem,youmustestablishadial-upaccountwithanInteserviceprovider(ISP).TolocateanISPnearyou,lookinalocaldirectoryorcomputerpublication.YourISPshouldprovideyouwiththefollowinginformation:Username(alsocalleduserAccessnumber(thenumberyoucalltoconnecttotheHostname NameServer(DNS)serverIf,besidestheWeb,youusetheInteforandnewsgroups,yourISPshouldalsoprovideyouwiththefollowingorPOPmailPOPserverMailorSMTPNewsorNNTserverChapter4–ATCommands,S-Registers,andResultTheATCommands,S-Registers,andResultCodesfortheMT5634ZBA-SeriesModemsarepublishedinaseparateReferenceGuide.Thisguideis ludedontheMT5634ZBA-SeriessystemCD.YoucanopentheguidefromtheCDoryoudownloadtheguidetoyourharddriveandthenopenit.Chapter5–RemoteChapter5–Chapter5–RemoteRemoteconfigurationisworkmanagementtoolthatallowsyoutoconfigureMT5634ZBAmodemsanywhereinyournetworkfromonelocation.Withpassword-protectedremoteconfiguration,youcanissueATcommandstoaremotemo-demformaintenanceortroubleshootingasifyouwereonsite.ThefollowingstepscanbeusedwhentheconnectionisestablishedbythelocalortheremoteNote:Theremotecomputermustberunningandacommunicationprogrammustbereadyforadonnection,whichwillbeindicatedbyalightedTRindicatoronthefrontofthemodem.EstablishadonnectionwitharemoteMT5634ZBA SendthreeremoteconfigurationescapecharactersfollowedbyATandthesetuppassword,andpressENTER.Example:%%%ATMTSMODEM.Youhavefourtriestoenterthecorrectpasswordbeforebeingdisconnected.Ifthepasswordiscorrect,theremotemodemrespondswithOK.YoucannowsendATcommandstoconfiguretheremote Whenyouhavefinishedconfiguringtheremotemodem,savethenewconfigurationbytyAT&W0andpressingENTER. TypeATOandpressENTERtoexitremoteconfiguration.YoucannowbreaktheconnectioninthenormalMulti-Teodemsareshippedwithadefaultsetuppassword(MTSMODEM).BecauseanyonewhohastheUserGuideknowsthedefaultsetuppassword,youshouldchangethepasswordandpossiblyalsotheremoteconfigurationescapecharacter.ChangingtheSetupOpenadommunicationsprogramsuchasHyperTerminalorPhIntheterminalwindow,typeAT#SMTSMODEM(orAT#SxxxxxxxxifyouhaverecedtheMTSMODEMpasswordwithxxxxxxxx)andpressENTER.ThemodemrespondswithOKifthesetuppasswordiscorrect,andERRORifitiswrong.Tochangethepassword,typeAT#S=xxxxxxxx,wherexxxxxxxxstandsforthepassword,andthenpressENTER.Thepasswordcanludeanykeyboardcharacter,andcanbeuptoeightcharacterslong.ThemodemrespondswithOK.CAUTION:Passwordsarecase-sensitive.Thenexttimeyouenterthepassword,itmustbeinthesamecaseasyousetitup.Thenesswordissavedautomatically.YoucannoweitherentermoreATcommandsorexitthedatacommunicationsprogram.Thenexttimeyouwishtosetupthemodem,youmustusethenessword.ChangingtheRemoteEscapeTofurtherimprovesecurity,youcanchangearemotemodem’sremoteconfigurationescapecharactereitherlocallyorremoy.TheremoteconfigurationescapecharacterisstoredinregisterS9.Thefactorydefaultis37,whichistheASCcodeforthepercentcharacter(%).SettingS9to0(zero)disablesremoteconfigurationCAUTION:Ifyoudothisremoy,youwon’tbeabletochangeitbackremoEstablisharemoteconfigurationlinkwiththeremotemodemasdescribedinBasicTypeATS9=n,wherenistheASCcodeforthenewremoteconfigurationescapecharacter,andthenpressENTER.SavethenewvaluebytyAT&WandpressingTypeATOandpressENTERtoexitremoteChapterChapter6–CallbackThischapterdescribeshowtousecallbacksecuritywithyourmodem.Callbacksecurityprotectsyou workfromunauthorizedaccessandhelpscontrollong-distancecosts.Whencallbacksecurityisenabled,allcallersarerequestedtoenpassword.Ifavalidpasswordisreceived,themodemhangsupandreturnsthecallbydialingaphonenumberthatisstoredwiththepassword.Thebeingcalledbackmustthenenterthepasswordasecondtimetoestablishaconnection.Upto30callbackpasswordsanddialingstringscanbestoredinthemodem.Eachdialingstringcanbeupto34or35characterslongandcanconta ommandsaswellasphonenumbers.Forcallers,thedialingstringcanbeprogrammedtoallowthecallertobypassthestoredcallbacknumberbyenteringatemporarycallbacknumber,toenteranextensionatthecallbacknumber,ortomakeadirectconnectionwithoutcallback.Forlocalsecurity,thepasswordsanddialingstringsthatarestoredinthemodemareprotectedfromtamperingbyasetuppassword,whichyoushouldchangewhenyousetupthemodem.YoucanfurtherprotectthemodemtamperingbydisablingitsabilitytorespondtomostATcommands.Tocheckforattemptedbreak-ins,youcanrequestthemodemtodisythenumberoffailedpasswordattempts.Yourmodemwasshippedwithadefaultsetuppassword(MTSMODEM).Thesamepasswordisusedforbothcallbacksecurityandremoteconfiguration(Chapter5).Becauseanyonewhohasaccesstothisguidehasaccesstothedefaultpassword,youshouldchangethepasswordduringyourinitialsetup.ChangingtheSetupOpenadommunicationsprogramsuchasHyperTerminalorPhIntheterminalwindow,typeAT#SMTSMODEM(orAT#SxxxxxxxxifyouhaverecedtheMTSMODEMpasswordwithxxxxxxxx).PressENTER.ThemodemrespondswithOKifthesetuppasswordiscorrectandERRORifitiswrong.Tochangethepassword,typeAT#S=xxxxxxxx,wherexxxxxxxxstandsforthepassword,andthenpressENTER.Thepasswordcanludeanykeyboardcharacter,andcanbeuptoeightcharacterslong.ThemodemrespondswithOK.Thenesswordissavedautomatically.YoucannoweitherentermoreATcommandsorexitthedatacommunicationsprogram.Thenexttimeyouwishtosetupthemodem,youmustusethenessword.CAUTION:Passwordsarecase-sensitive.Thenexttimeyouenterthepassword,itmustbeinthesamecaseasyousetitup.TurningCallbackSecurityOnandCallbacksecuritymustbeturnedontoentermanycallbacksecurityOpenadommunicationsprogramsuchasHyperTerminalorPhIntheterminalwindow,typeAT#Sxxxxxxxx,wherexxxxxxxxisyourpassword.PressENTER.ThemodemrespondswithOKifthesetuppasswordiscorrectandERRORifitiswrong.TypeoneofthefollowingToturnoffcallbacksecurity:TypeAT#CBS0andpressENTER.Callersnolongerneedapasswordtoconnecttothemodem,themodemisunabletocallthemback,andthestoreddialingcommandlocations eavailable.Toturnonbothlocalandremotecallbacksecurity:TypeAT#CBS1.PressENTER.Withlocalsecurityturnedon,youmustenterthesetuppasswordbeforeyoucanennyATcommandexcepttheAT,ATIn,andAT#Sxxxxxxxxcommands.Foradescriptionofremotecallbacksecurity,seethefollowingparagraph.Toturnonremotecallbacksecurityonly:TypeAT#CBS2andpressENTER.Withremotecallbacksecurityturnedon,eachcallerisaskedtoenpassword,iscalledback,andthenisaskedtoenterthepasswordagainbeforeaconnectioncanbemade.Also,dialingcommandlocations0–3forusewiththeDS=ydialingcommandarerecedbycallbackdialingcommandlocations0–29.Totemporarilydisablecallbacksecurityifthemodemissetto#CBS1or#CBS2(forinstance,tocallanothermodem):TypeAT#CBS3andpressENTER.Themodemreturnstoitsoriginalsettingwhenyouissuethehangupcommand(+++ATH)orthemodemisreset.Notethatifaremotemodembreakstheconnection,callbacksecurityremainsdisabled.SettingCallbackSecurityMessageThemodem’spasswordpromptandmessagesparitymustmatchtheparityofthecomputertowhichthemodemisOpenadommunicationsprogramsuchasHyperTerminalorPhIntheterminalwindow,typeAT#Sxxxxxxxx,wherexxxxxxxxisyourpassword.PressENTER.ThemodemrespondswithOKifthesetuppasswordiscorrectandERRORifitiswrong.Themodem’sparitydefaultvalueisNoparity(AT#CBP0).Tochangethemodem’sdefaulttouseevenparity,typeAT#CBP2.PressENTER.Foroddparity,typeAT#CBP1.PressENTER.Tostorethenerityvalue,typeAT&W.PressAssigningCallbackPasswordsand