Multitech MultiModem ZBA MT9234ZBA?V Especificaciones descargar pdf (Pagina 20)

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MT9234ZBA‐USBUserGuide 20

Chapter 4 – Remotely Configuring the

Modem

Thischapterdescribeshowtouse ane tworkmanagementtooltoconfiguremodemsanywhereinyournetwork

fromonelocation.Withpasswordprotectedremoteconfiguration,youcanissueATcommandstoaremote

MultiModemprodu ctformaintenanceortroubleshootingasifyouwereonsite.Thischapteralsodescribeshow

changedefaultpasswordsandcharacterstoenhancethesecurityoftheproduct.

RemotelyConfiguringtheModem

ThefollowingstepsarevalidforconnectionsestablishedbythelocalortheremoteMulti‐Techmodem.

1. EstablishadataconnectionwitharemoteMultiModemproduct.

2. SendthreeremoteconfigurationescapecharactersfollowedbyATandthesetuppassword,andpressENTER.Example:

%%%ATMTSMODEM.Youhavefourtriestoenterthecorrectpasswordbeforebeingdisconnected.Ifthepasswordis

correct,theremotemodemrespondswithOK.

3. YoucannowsendATcommandstoconfiguretheremotemodem.

4. Afterconfiguringtheremotemodem,savethenewconfigurationbytypingAT&W0,andpressingEnter.

5. TypeATOandpressEntertoexitremoteconfiguration.Youcanthenbreaktheconnectioninthenormalway.

CAUTION:Ifyouhang‐upordisconnectwhile inremoteconfigurationmode,theremotemodemmaylockup.

ChangingDefaultPasswordsandEscapeCharacter

Multi‐Techmodemsareshippedwithadefaultsetuppassword(MTSMODEM).Anyonewhohasanowner’s

manualknowsthedefaultsetuppassword.Assuch,forsecurityreasons,changethepasswordandtheremote

configurationescapecharacter.

ChangingtheSetupPassword

1. OpenadatacommunicationsprogramsuchasPhoneToolsorHyperTerminal.

2. Tochangethepassword,typeAT#S=xxxxxxxx,wherexxxxxxxxstandsforthepassword,andpressENTER.Thepassword

canincludeanykeyboardcharacter,andmustbeonetoeightcharacterslong.ThemodemrespondswithOK.

3. Thenewpasswordissavedautomatically.YoucannoweitherentermoreATcommandsorexitthedata

communicationsprogram.Thenexttimeyouremotelyconfigurethemodemyoumustusethenewsetuppassword.

Note:Youcanonlychangethesetuppasswordlocally;youcannotchangeitremotely.Also,passwords

arecasesensitive.The

nexttimeyouenterthepassword,itmustbeinthesamecaseasyousetitup.

ChangingtheRemoteEscapeCharacter

Toincreasesecurity,youcanchangearemotemodem’sremoteconfigurationescapecharacter.Theremote

configurationescapecharacterisstoredinregisterS9. Thefactorydefaultis37,whichistheASCIIcodefo rthe

percentcharacter(%).ForASCIIcodecharacters,refertoAppendixE.SettingS9to0

(zero)disablesremote

configurationentirely—butifyoudothisremotely,youwon’tbeabletochangeitbackremotely.

1. Establisharemoteconfigurationlinkwiththeremotemodemasdescribedin“BasicProcedure.”

2. TypeATS9=n,wherenistheASCIIcodeforthenewremoteconfigurationescapecharacter,thenpressEnter.

3. SavethenewvaluebytypingAT&WandpressingEnter.

4. TypeATO<CR>toexitremoteconfiguration.

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Multitech MultiModem ZBA MT9234ZBA?V Especificaciones Pagina 20