Troubleshooting | Multi-Tech Systems MT4X56USB specification

Four USB V.90 Modems

Chapter 6 - Troubleshooting

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Multi-Tech Systems MT4X56USB manual Troubleshooting

Contents

User Guide MultiModemUSB Model MT4X56USB Record of Revisions User GuidePatents Trademarks Contents Glossary of Terms Index Introduction and Description Features IntroductionMultiModemUSB User Guide Installation Technical SpecificationsPreview of this Guide Introduction and Description Related Documentation Modem Ports Ports 1, 2, 3, Front PanelHub System USB Type a Upstream Connector RJ-ll Modem ConnectorUSB Type B Downstream Connector Power Connector Installation Unpacking Safety Warning Telecom Cabling your MT4X56USB Installation MT4X56USB Software Loading and Configuration System USB Support Loading your Driver SoftwareMT4X56USB Drivers for Windows Software Loading and Configuration Uninstalling MultiModemUSB in Windows MT4X56USB Drivers for Windows Uninstalling MultiModemUSB in Windows MT4X56USB Drivers for Windows NT MultiModemUSB Drivers Install dialog box displays Click Next Uninstalling MultiModemUSB in Windows NT Select Add/Remove ProgramsAdd/Remove MT4X56USB Drivers for Windows Click Finish Software Loading and Configuration Select Add/Remove Hardware Click Start Settings Control Panel Modems Installing Your V.90 Modems Read Carefully Software Loading and Configuration MT4X56USB Click Start Settings Control Panel Phone and Modems option Installing Your V.90 Modems Windows MT4X56USB Software Loading and Configuration Windows 95/98 Configuration Utility MT4X56USB Windows NT 4.0/2000 Configuration Utility MT4X56USB MT4X56USB AT Commands, S-Registers and Result Codes Command Enter Key AT Command SummaryRepeat Last Command Answer AT Commands, S-Registers and Result Codes Result Codes Enable/Disable Return Online to Data ModeInformation Request Modulation Handshake Load Factory Settings Modem ResetTone Dialing Result Code Format Asynchronous Communications Mode Communications ModeTest Commands Display Current Settings Select Stored Configuration for Hard Reset Store Current ConfigurationCommand &Zy=x Store Dialing Command \An Select Maximum MNP Block Size \Tn Inactivity Timer \Nn Error Correction Mode Selection\Kn Break Control \Qn Flow Control Selection Command %En Fallback and Fall Forward Control Command %DCn AT Command ControlEnter Setup Password Command #S=x Store Setup Password Command %%%ATCRRemote Configuration Escape Sequence Command +++ATCR Escape Sequence Registers Register Unit Range Default Description Upstream data rates S38 Terse Verbose Description Result Codes For more information on scripting, click the Help button Remote Configuration Remote Configuration Procedure SetupChanging the Setup Password Remote Configuration Commands Remote Configuration and ManagementChanging the Remote Escape Character MT4X56USB Troubleshooting None of the Indicators Light Modem Does Not Respond to CommandsModem Dials But Cannot Connect Modem Disconnects While Online Troubleshooting Loopback Tests Modem Cannot Connect When AnsweringModem Doesn’t Work with Caller ID Fax and Data Software Can’t Run at the Same Time Local Analog Loopback Test V.54 Loop Test procedure Remote digital loopback test Remote Digital Loopback Test V.54 Loop Local digital loopback test Local Digital Loopback Test V.54 Loop Determining Why USB Support Is Not Present Windows 95/98 TroubleshootingInstalling Microsoft USB Support Double-click the Universal Serial Bus Controller icon Upgrade Procedure Identify the MT4X56USB Firmware Upgrade OverviewIdentify the Current Firmware Version Multi-Tech Web Site Extract the Upgrade Files Download the Upgrade FileUpgrade Procedure Clear Your Stored Paramenters Restore Your Parameters Upgrade the Modem’s Firmware Service, Warranty and Tech Support Software User License Agreement On-line Warranty Registration Limited WarrantyService, Warranty and Tech Support Tech Support Contacting Tech Support via E-mail Service Appendices Class B Statement Appendix a Regulatory InformationFCC Part Industry Canada Appendices FCC Part 68 Telecom Canadian Limitations Notice FAX Branding Statement Commission Decision CTR21 EMC, Safety and Terminal Directive ComplianceNew Zealand Telecom Warning Notice International Modem Restrictions Troubleshooting Appendix B V.90 SupportIntroduction Glossary of Terms MT4X56USB Glossary MT4X56USB Glossary MT4X56USB Glossary MT4X56USB Glossary MT4X56USB Glossary MT4X56USB Glossary MT4X56USB Index Index Configuration MT4X56USB Software user license agreement Speed