Multitech MT5634ZBA-USB manual None of the Indicators Light, Modem Does Not Respond to Commands

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MT5634ZBA-USB User Guide

Introduction

Your modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective. However, it is more likely that the source of your problem lies elsewhere. The following symptoms are typical of problems you might encounter:

•None of the LEDs light when the modem is on.

•The modem does not respond to commands.

•The modem dials but is unable to make a connection.

•The modem disconnects while online.

•The modem cannot connect when answering.

•The modem doesn’t work with Caller ID.

•Fax and data software can’t run at the same time.

If you experience problems, please check the following possibilities before calling

Technical Support (see Appendix D).

None of the Indicators Light

When you plug in the modem, the Power LED should come on. After the operating system detects and configures the modem, the TR LED should come on.

•If the Power LED does not come on, double check the cable connections.

•If the TR LED does not come on, check to see that the software from the installation CD has been installed (see Chapter 2).

The Modem Does Not Respond to Commands

•Make sure you are issuing the modem commands from the data communications software, either manually in terminal mode or automatically by configuring the software.

•Make sure you are in terminal mode in your data communications program, then type AT and press ENTER. If you get an OK response, your connections are good and the problem likely is in the connection setup in your communications software.

•Try resetting your modem by unplugging the USB cable from the modem, and then plugging it back in.

•Try rebooting the computer.

•The modem might be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem is possibly defective. Call Tech Support for assistance (see Appendix D).

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Contents User Guide Record of Revisions TrademarksContents Index Introduction and Description Universal Serial Bus USB IntroductionProduct Description MT5634ZBA-USB User GuideWhat Is in Your Modem Package? Introduction and DescriptionMT5634ZBA-USB User Guide Quick Start We supply Safety WarningsWhat You Will Need You supplyAssemble the Modem Quick StartInstall the Software Phone Connection Connect the Modem to Your SystemLine Connection USB ConnectionSelect the Modem Test Your ModemFeatures Features What Can You Do with Your Modem?Data Computer FaxRequired Equipment Telephone LineConnecting to a Telephone Set Phone Connecting to the Computer USBConnecting to the Telephone Line Line ConnectionsFront Panel Front panelMT5634ZBA-USB User Guide AT Commands, S-Registers and Result Codes AT Commands AT Command Summary Monitor Speaker Volume Command DS=n Dial Stored Telephone NumberEcho Command Mode Characters Echo Online Data CharactersResult Codes Enable/Disable Monitor Speaker ModeReturn Online to Data Mode Command Sr=n Set Register ValueCommand Yn Long Space Disconnect MT5634ZBA-USB User Guide Command Vn Result Code FormatCommand Xn Result Code Selection Modem ResetCommunications Mode Load Factory SettingsCommand &Gn V.22bis Guard Tone Control Asynchronous Communications ModeCommand &Wn Store Current Configuration MT5634ZBA-USB User Guide Command &Tn V.54 Test CommandsDisplay Current Settings Select Stored Configuration for Hard ResetData Buffer Control Error Correction Mode SelectionModem Port Flow Control Break ControlCommand %DCnAT Command Control Inactivity TimerCommand %Cn Data Compression Control Protocol Result CodeCommand #S=x Store Setup Password Command %En Fallback and Fall Forward ControlEnter Setup Password Command%%%ATCRRemote Configuration Escape SequenceRegisters S37 S38Rates K56flex Rates S48 S42S43 S89Result Codes Terse Verbose DescriptionMT5634ZBA-USB User Guide Remote Configuration Basic Procedure SetupChanging the Setup Password Remote Configuration Changing the Remote Escape CharacterMT5634ZBA-USB User Guide Troubleshooting None of the Indicators Light Modem Does Not Respond to CommandsTroubleshooting Modem Dials But Cannot ConnectModem Doesn’t Work with Caller ID Modem Cannot Connect When AnsweringModem Disconnects While Online Fax and Data Software Can’t Run at the Same TimeAppendixes Appendix a Regulatory Compliance FCC Regulations for Telephone Line InterconnectionClass B Statement Industry CanadaCanadian Limitations Notice FAX Branding StatementEuropean Directives International Modem RestrictionsNew Zealand Telecom Warning Notice Appendix B Technical Specifications ITU-T ConnectorsCarrier Frequencies ITU-T V.32bis/V.32 Carrier FrequenciesDimensions DiagnosticsIndicators WeightAppendix C Loopback Tests IntroductionFigure C-1. Local analog loopback test Test Procedure Local Analog Loopback Test V.54 LoopRemote Digital Loopback Test V.54 Loop Appendix C Loopback TestsFigure C-3. Local digital loopback test Test Procedure Local Digital Loopback Test V.54 LoopOnline Warranty Registration Appendix D Warranty, Service, and Technical SupportLimited Warranty ServiceTo Log on to the Multi-Tech BBS Technical SupportMulti-Tech BBS To Download a FileAbout the Multi-Tech Fax-Back Service About the InternetIndex Index MT5634ZBA-USB User Guide