Multi-Tech Systems MT9234ZBA-V Data Is Being Lost, There Are Garbage Characters on the Monitor

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Chapter 6 – Troubleshooting

Data Is Being Lost

•If you are using data compression and a high speed serial port, set the serial port baud rate to two to six times the data rate.

•Make sure the flow control method you selected in software matches the method selected in the modem.

•Try entering the I11 command in online mode or the &V command in command mode to display information about the last connection, making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

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.

•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 second 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 I11 command in online mode or the &V command in command mode to display information about the last connection, making a screen print of the connection statistics, and checking for parameters that might be unacceptable.

The Modem Doesn’t Work with Caller ID

•Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0) or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information. Check your initialization string, and if necessary change it to set the modem to answer after the second ring (S0=2).

•Make sure that you have Caller ID service from your telephone company.

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

•Communication devices can be accessed by only one application at a time. In Windows 2000 and higher, you can have data and fax communication applications open at the same time, but they cannot use the same modem at the same time.

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Multi-Tech Systems, Inc. MT9234ZBA-Series User Guide (S000387C)

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Contents MultiModem ZBA Patents PN S000387C, Version C CopyrightTrademarks World HeadquartersContents AT Commands Info FeaturesIntroduction Technical Specifications CE MarkChange the Internal Jumpers InstallationSafety Warnings Opening the ModemChanging the Voice Jumper Connect the Modem to Your PC Install the Modem Driver Connect the Modem to the AC Power OutletPower-On Test Windows InstallerPage Using AT Commands to Configure Your Modem Configure the Modem for Your Country or RegionUsing the Global Wizard to Configure Your Modem Click Initial Setup and Country/Region SelectionOperation SetupConnecting to the Internet About the Front PanelChanging the Setup Password Remote ConfigurationChanging the Remote Escape Character Callback Security Changing the Setup PasswordTurning Callback Security On and Off Setting Callback Security Message Parity Assigning Callback Passwords and Phone NumbersPassword-Only Callback Calling ProceduresNumber-Entry Callback Extension-Entry Callback Direct ConnectionCallback Security Commands Callback Assignments FormNone of the Indicators Light TroubleshootingModem Does Not Respond to Commands Modem Cannot Connect When Dialing Page Modem Doesn’t Work with Caller ID Data Is Being LostThere Are Garbage Characters on the Monitor Fax and Data Software Can’t Run at the Same TimeIdentify the Modem Firmware Download the Upgrade FileAppendix a Upgrading the Modem’s Firmware Identify the Current Firmware VersionRestore Your Parameters Extract the Upgrade FilesUpgrade the Modem’s Firmware Clear Your Stored ParametersFCC Part 15 Regulation Appendix B Regulatory ComplianceFCC Part 68 Telecom Industry Canada EMC, Safety and R&TTE Directive ComplianceCanadian Limitations Notice Thailand ApprovalSouth African Statement New Zealand Telecom Warning NoticeJapan Requirements Brazil Special Cable for MT9234ZBA model only Special phone cable is required for regulatory complianceWeee Waste Electrical and Electronic Equipment Statement Appendix C Environmental InformationReach Statement Appendix C Environmental Info Rohs HT/TS Substance Concentration CR6+Appendix D Installing a Modem under Linux Configure the Modem for your Country or Region Appendix E Connecting to a Cisco RouterConfigure for Callback Security in Direct Connect Mode Remote Configuration Console Port Final SetupConsole Port Connections AT commands Index
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MT9234ZBA-V, MT9234ZBA specifications

Multi-Tech Systems has long been a trusted name in the field of communication technology, and its MT9234ZBA and MT9234ZBA-V modem products exemplify the company's commitment to delivering robust and reliable connectivity solutions. These modems are ideal for a range of applications, including telephony, data communication, and remote monitoring, making them a versatile choice for both personal and professional use.

One of the standout features of the MT9234ZBA and MT9234ZBA-V is their high-speed data transmission capabilities. Both models support data rates of up to 56 Kbps, ensuring efficient and swift data transfer for various applications. This allows users to experience minimal latency during downloads and uploads, appealing to those who depend on timely and reliable data delivery.

These modems utilize advanced technologies, such as V.92 and V.90 protocols, which enable users to benefit from features like quick connect, thereby reducing the time it takes to establish a connection. Additionally, the modems support both analog and digital lines, making them adaptable for different environments and infrastructures.

Another notable characteristic of the MT9234ZBA and MT9234ZBA-V modems is their compatibility with a wide range of operating systems, including various versions of Windows, Linux, and Mac OS. This cross-platform support ensures that users can easily integrate these modems into their existing software environments without encountering significant compatibility issues.

The design and construction of these modems are also worth mentioning. They are compact and lightweight, making them easy to install and reposition as needed. Their robust construction ensures longevity, which is crucial for users in environments where durability is paramount.

For those concerned about security, Multi-Tech Systems has integrated multiple security features within these modems. This includes support for encryption protocols, ensuring that data transmitted over the modem remains secure and protected from unauthorized access.

In conclusion, the MT9234ZBA and MT9234ZBA-V by Multi-Tech Systems represent an excellent choice for anyone in need of reliable and high-speed modem solutions. With their advanced features, compatibility with various operating systems, and emphasis on security, these modems stand out in the crowded telecommunications market. Whether for home use or in a professional setting, the MT9234ZBA and MT9234ZBA-V offer robust solutions for modern communication needs.
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