Multi-Tech Systems MT2834ZDX manual There Are Garbage Characters on the Monitor

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Chapter 4 – Troubleshooting

There Are Garbage Characters on the Monitor

Your computer and the remote computer might be set to different word lengths, stop bits, or parities. If you have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communication software.

4 You might be experiencing line noise. Enable error correction, if it is disabled, or hang up and call again; you might get a better connection the next time.

At speeds above 2400 bps, the remote modem might not use the same transmission or error correction standards as your modem. Try connecting at a slower speed or disabling error correction. (With no error correction, however, line noise can cause garbage characters.)

Try entering the L8 (List Online Diagnostics) command in online mode, making a screen print of the diagnostics listing, and checking for parameters that may be unacceptable (number of retrains, round trip delay, etc.).

Fax and Data Programs Can’t Run at the Same Time

Communications devices can be accessed by only one application at a time. In Windows 95, 98, and NT 4.0, you can have separate data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

Multi-Tech Systems, Inc. MT2834ZDX User's Guide

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Contents MT2834ZDX-Series External Data/Fax Modem Users Guide User Guide MT2834ZDX-Series S000309C Rev. C Contents Getting Started Introduction InstallationSafety Warnings FeaturesConnect the Modem to Your System Modem InstallationAttach the Self-Adhesive Feet Removing Your Old Modem from Windows Install the Modem DriverInstall Data Communications Software Front Panel Speed Indicator Blink RatesOperation AT Commands AT Commands, S- Registers and Result CodesCDn Cleardown at Disconnect $BAn Baud AdjustDCn AT Command Control Carrier Detect ControlDPn Read Line Probe Data En Echo Command Mode CharactersEn V.42 Error Correction Modes En Non-Error Correction Mode Flow ControlFn Echo Frequency Canceller Offset Compensation $En V.42 Error Correction at 300 bpsLoad Default Configurations $Fn Enable/Disable Auto-Reliable Fallback CharacterInquire Product Codes List Commands#L n V.42 Mode Selection in Originate Mode $H n Help ScreensNdNe. .. Number Linking Result Codes Enable/Disable$MBn Modem Baud Rate Nd Dial a Stored NumberRFn CTS/RTS Interaction Control Rn Clear to Send ControlRAn Asymmetrical Bit Rate RDn Square Wave Ring DetectTone-Dial Tn Respond to Remote Digital Loopback SignalSFn DSR/CD Interaction Control $SBn Serial Port Baud RateXn Result Codes and Call Progress Selection Wn Store ConfigurationModem Reset Return to Command ModeBreakatcr Escape Sequence Atcr Remote Configuration Escape Sequence+++ATCR Escape Code Registers Register Unit Range Default DescriptionTerse Verbose Result CodesNone of the LEDs Light When the Modem Is On TroubleshootingModem Dials But Cannot Connect Modem Disconnects While Online There Are Garbage Characters on the Monitor FCC CFR47 Part 15 Regulation Appendix a Regulatory ComplianceRegulatory Compliance FCC CFR47 Part 68 Telecom USAAAEQ##Txxxx Current Requirements for Label Content and FormatRegulatory Requirements for Canada IC XXXXXX-ZZZZZZZZ Where Industry CanadaTransmit Level -13 dBm Frequency Stability +/-0.01% Appendix B Technical SpecificationsCommand Buffer 60 characters Manual Control Power switchRepair Procedures for U.S. and Canadian Customers Appendix C Warranty and ServiceMulti-Tech Warranty Statement Online Warranty Registration About the Internet Repair Procedures for International DistributorsReplacement Parts July Index AT CommandsNone of the LEDs light when the modem is on
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