ADTRAN Express XRT manual External Analog Modem Not Detected, Difficulty with 230.4 kbps Operation

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Chapter 6. Troubleshooting

External Analog Modem Not Detected

If the Express Configuration Wizard cannot detect the external an- alog mode verify the following:

1.The external analog modem is powered on.

2.The external analog modem is properly installed and config- ured for use with the Express Configuration Wizard. See Con- figuring an External Analog Modem on page 30 for more details on the required settings.

Difficulty with 230.4 kbps Operation

If the Express XRT does not work when the DTE rate is set to 230.4 kbps inside Windows, verify the following:

1.Verify that dip switch 1 on the back of the Express XRT is set to off (up).

2.Verify that a high speed serial card with a 16650 UART is being used and the software drivers to support the extended baud rate tables are installed.

Dial-Up Networking Difficulty

If Windows 95 Dial-Up Networking cannot talk to the Express XRT, check the modem configuration for the Express XRT. Ensure the bit rate for the DTE is set correctly. If the PC is not equipped with a 16650 UART, then the fastest DTE operation speed is 115.2 kbps. Ensure the speed is not higher than the PC and modem can support.

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Express XRT User Guide

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Contents Express XRT User GuideTrademarks Service Type Service Order Code Page Canadian Emissions Requirements Canadian Equipment LimitationsPage Page Page Telephone Company Contacts for Isdn Service NynexPage Table of Contents Installing an Analog Modem List of Figures Figure B-1 Front Panel LEDs List of TablesExpress XRT Overview Chapter OverviewGetting Started For a PC Minimum RequirementsWhat You Provide For a MacintoshExpress XRT Contents What Adtran ProvidesOverview Installing the Adtran Express XRT Chapter InstallationVerify Switch Settings Connecting the Express XRT Dip Switches on Rear PanelGo to the Express XRT Software Installation section Express XRT Software InstallationStandard Isdn Internet/Remote Access Application Microsoft Windows 95 and Windows NT Windows 95 Plug and Play Select Adtran Express XRT from the Drivers listSelect Adtran Express XRT from the Drivers list Get On With It Installation OptionsGo to the section Using the Express Configuration Wizard on Microsoft Windows 3.1 and Windows NTWindows NT 3.51 INF File Installation Macintosh Installation Double-click the Express Configuration Installer iconCall Waiting Basic Telephone ServiceSupplementary Voice Services Conference CallingSingle Phone Number Operation Phone Number AllocationAutomatic Redial For WIndows 3.x and WIndows NT Using the Express Configuration WizardFor Windows 95 and WIndows NT For the Macintosh operating systemExpress Configuration Automatic Guide option Installation This option only applies to North American switches Auto-Detect SPIDs/Switch Type Expert IsdnExpress Configuration Wizard Connection Tab Auto-Detect buttonUsing the Express Configuration Wizard Help Express Configuration Wizard Tray ToolExpress Configuration Wizard Tray Tool Preferences TabExpress XRT Enabled, External Analog Modem Disabled Express XRT Disabled, External Analog Modem EnabledUnknown State Properties Express Configuration Tray Tool MenuEnable/Disable Modem RefreshInstalling Windows 95 Dial-Up Networking ExitVT 100 Configuration VT 100 Terminal EmulationVT 100 Terminal Configuration Menu VT 100 Terminal Status BufferVT 100 Terminal Status Buffer Menu Installing an Analog Modem External Analog Modem ApplicationConnecting an External Analog Modem External Analog Modem ApplicationSelect Dont detect my modem I will select it from a list Installing a New External Analog ModemClick Connect External Modem Have DiskConfiguring an External Analog Modem Required External Analog Modem SettingsExpress Configuration Wizard Modem Enable Controlling an External Analog ModemExpress Configuration Wizard Connecting an External Modem No Modem Attached Error MessageTerminal Emulation Modem Enable Express Configuration Wizard Modem DisableDEM Found HyperACCESS Verifying External Modem Connection HyperACCESS Enabling an External Analog ModemHyperACCESS Disabling an External Analog Modem Terminal Emulation Modem DisableInternal Analog Modem Application Connecting an Internal Analog Modem Internal Analog Modem ApplicationChapter Application Configuration Factory Default ConfigurationFactory PPP 64k Internet Profile ConfigurationsFactory Multilink PPP 128k Internet Factory V.120 64k Remote Access Express Configuration WizardStarting the Express Configuration Wizard Software Factory Async Bonding 128k Remote AccessInternet and Remote Access Creating a Custom ProfileIsdn Setup Tab Protocol Tab Defining a User Program ButtonAdvanced Tab Calling Features Tab Inactivity TimerCalling Features Options Message Waiting IndicatorEnable Anonymous Call Rejection Flash/Hook DefaultEnable Call Rejection List Incoming Voice Call OptionsDefining a Custom HyperACCESS Session BBS ApplicationsShiva Password Authentication Protocol Spap Application Configuration Express Configuration Wizard Chapter Upgrading SoftwareDiagnostics Tab HyperACCESS Send Dialog Box Power/Line LED is Off Chapter TroubleshootingTroubleshooting Guidelines Power/Line LED Flashes and B1 and B2 LEDs are OffPower/Line LED, B1, and B2 LEDs Flash Green Express XRT Not Detected Dial-Up Connection ProblemsAuto-detect Switch/SPIDs Remains at Link Down Auto-detect is only used in North AmericaDifficulty with 230.4 kbps Operation External Analog Modem Not DetectedDial-Up Networking Difficulty Appendix a AT Commands and S-Registers AT CommandsReading an S-Register Using an AT CommandUsing S-Registers Reading an S-Register StringCommand Function Dialing a Call using the AT Command ProcessorChanging a String S-Register Carrier Detect CD Control Line Options Clear-To-Send CTS Control Line Options AT Command Response Message Types Register List S8 Call RejectionAsync Bond PPP ModeS12 Escape Time S14 Misc Bits INGDTE CD DTE RTSDTE DSR DTE DTRBond Txadd Switch TypeBond Txfa Bond TxdeqSPID2 LOC S53 Call Type S54 Protocol S58 Call Screen INGSPID1 LOC LDN1 LOCDTE Flow DTE ParityDTE Stop RemoteCountry S93 Call Type RoutingLocal Tones CR0 LOCAppendix A. AT Commands and S-Registers Front Panel LEDs Appendix B LEDsLEDs Table B-ANorth America a ﬂashing light Accessinfodiscarded Appendix C Status Buffer MessagesBearercapnotauth BadinfoelemBearcapnotavail Bonding +/-XXXChandoesnotexist BusyCallrejected ChannotimplementedDest not Isdn DestoutoforderFacilityrejected FacilitynotimplementFacilitynotsubscribed ID =Invalidnumberformat InvalidelemcontentsInvalidmsgunspec LDN TOO LongNocircuitavailable NetworkcongestionNetworkoutoforder NonexistentmsgPPP Link Loopback ProtocolerrorPPP Compression UP ReqchannelnotavailSource not Isdn ServicenotavailTimerexpiry TemporaryfailureWrongmessage V120 TimeoutWrongmsgforstate Appendix D Loop Status Messages Yyyy PPPV120 Rate adaption protocolAppendix D. Loop Status Messages Table E-A Appendix E Connector PinoutsRS-232 Interface Pin Name Description= Input O = Output Ring IndicatorData Terminal Ready Modem InterfaceTable E-D Table E-CRJ-11 Pots Port Interface RJ-45 Isdn Line InterfaceFigure E-3 Express XRT Ground PinoutsIndex NumericsINF Index Index Do not STAPLE. Registration form inside Express XRT Warranty Registration Card Pre-Sales Inquiries and Application Support On-Line ServicesPost-Sales Support