Chapter 7 – 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 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 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. NOTE: The modem supports US Bellcore standard caller ID only.

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.

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

27

Page 26 Page 28
Page 27
Image 27
Multitech MT5634ZBA Data Is Being Lost, There Are Garbage Characters on the Monitor, Modem Doesn’t Work with Caller ID
Page 26 Page 28

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.
Top Page Image Contents