Manuals / Multitech / Computer Equipment / Modem

Multitech MT5634ZBA-V-V92, MT5634ZBA-GLOBAL manual Troubleshooting, None of the Indicators Light

Models: MT5634ZBA-GLOBAL MT5634ZBA-V-V92 MT5634ZBA-SERIES MT5634ZBA

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Chapter 7 – Troubleshooting

Chapter 7 – Troubleshooting

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 cannot connect when dialing.

•The modem disconnects while online.

•The modem cannot connect when answering.

•File transfer is slower than it should be.

•Data is being lost.

•There are garbage characters on the monitor.

•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 F).

None of the Indicators Light

When you turn on the modem, the LED indicators on the front panel should flash briefly as the modem runs a self-test. If the LEDs remain off, the modem is probably not receiving power.

•Make sure the modem’s power switch is on, especially if you normally turn the modem on by turning on a power strip.

•If the modem is plugged into a power strip, make sure the power strip is plugged in and its power switch is on.

•Make sure the power supply is firmly connected to the modem and the power supply’s power cord is firmly connected to both to the power supply and the wall outlet or power strip.

•If the power strip is on and the modem switch is on, try moving the power supply to another outlet on the power strip.

•Test that the outlet is live by plugging another device, such as a lamp, into it.

•The modem or power supply may be defective. If you have another Multi-Tech modem, try swapping modems. If the problem goes away, the first modem or power supply might be defective. Call Technical Support for assistance.

CAUTION: Do not under any circumstances replace the power supply with one designed for another product; doing so can damage the modem and void your warranty.

The Modem Does Not Respond to Commands

•Make sure the modem is plugged in and turned on. (See “None of the Indicators Light.”)

•Make sure you are issuing the modem commands from data communication software, either manually in terminal mode or automatically by configuring the software. (You cannot send commands to the modem from the DOS prompt.)

•Make sure you are in terminal mode in your data communication program, the TR LED should be lit, then type AT and press ENTER. If you get an OK response from your modem, your connections are good and the problem likely is in the connection setup in your communication software.

•Try resetting your modem by turning it off and on. If you are using DOS or Windows 3.1 communication software, make sure the initialization string includes &F as the first command, to cancel any “leftover’ command that could affect the modem’s operation.

•If you don’t get an OK, the problem may still be in the communication software. Make sure you have done whatever is necessary in your software to make a port connection. Not all communication programs connect to the COM port automatically. Some connect when the software loads and remain connected until the program terminates. Others can disconnect without exiting the program. The modem’s TR indicator lights to show that the software has taken control of the modem through the COM port.

Multi-Tech Systems, Inc. MT5634ZBA-Series User Guide (S000286G)

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Multitech MT5634ZBA-V-V92 manual Troubleshooting, None of the Indicators Light, Modem Does Not Respond to Commands
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MT5634ZBA-GLOBAL, MT5634ZBA-V-V92, MT5634ZBA-SERIES, MT5634ZBA specifications

The Multitech MT5634ZBA series is a line of high-performance 56K modems that have been engineered for reliable data transmission over telephone lines. This series includes models such as the MT5634ZBA, MT5634ZBA-SERIES, MT5634ZBA-V-V92, and MT5634ZBA-GLOBAL, each catering to different communication needs while maintaining a commitment to quality and efficiency.

One of the standout features of the MT5634ZBA series is its support for the V.92 protocol. This technology significantly enhances the modem's performance by allowing faster upload speeds compared to its predecessors. With V.92, users can enjoy uploads at speeds up to 48Kbps, which is particularly beneficial for those who frequently send large files or engage in video conferencing. Furthermore, the V.92 protocol supports features like modem-on-hold, enabling users to receive incoming calls without disconnecting their internet session.

Another notable characteristic of the MT5634ZBA series is its globally compatible design. The MT5634ZBA-GLOBAL version has been adapted to work with various international telecommunications standards, making it an excellent choice for businesses and individuals who require a reliable connection across different countries. This international usability ensures that users can connect seamlessly, regardless of location.

The MT5634ZBA modems also feature advanced error correction and data compression technologies, such as MNP2-4 error control, and V.42 bis compression. These technologies work together to improve data integrity and enhance the overall throughput of the modem, resulting in a more efficient and reliable connection.

In terms of hardware, the MT5634ZBA series modems are built with robust components that ensure longevity and consistent performance. They are equipped with standard serial interface ports that allow easy integration with various devices, such as computers, point-of-sale systems, and other communication equipment.

In summary, the Multitech MT5634ZBA series represents a significant advancement in modem technology, combining speed, reliability, and global adaptability. With its support for V.92, comprehensive error correction, and high-level data handling capabilities, the MT5634ZBA series is an ideal choice for users seeking efficient and effective communication solutions, whether at home or in business environments.