Multi-Tech Systems PN S000408C File Transfer Is Slower Than It Should Be, Data Is Being Lost

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Chapter 7 – Troubleshooting

File Transfer Is Slower Than It Should Be

•You might have an older UART. For best throughput, install a 16550AFN UART or a Multi-Tech ISI serial port card.

•If you are using a slow transfer protocol, such as Xmodem, try Zmodem or Ymodem/G instead.

•Is your line noisy? If there is static on your line, the modem has to resend many blocks of data to insure accuracy. You must have a clean line for maximum speed.

•Are you downloading a compressed file with MNP 5 hardware compression enabled? Since hardware data compression cannot compress a file already compressed by an archiving program, the transfer can be marginally slower with data compression enabled than with it disabled.

•Try entering the &V1 command to display information about the last connection, making a LCD print of the connection statistics, and checking for parameters that might be unacceptable.

Data Is Being Lost

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

•Your UART might not be reliable at serial port speeds over 9600 bps or 19,200 bps. Turn off data compression, reset your serial port speed to a lower rate, or replace your serial port with a faster one.

•Make sure the flow control method you selected in software matches the method selected in the modem. If you are using the modem with a Macintosh, you might have the wrong cable for hardware flow control.

•Try entering the &V1 command to display information about the last connection, making a LCD 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 &V1 command to display information about the last connection, making a LCD 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.

Multi-Tech Systems, Inc. MT5600BA-V92 User Guide

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Contents MultiModem Revision Date Description Table of Contents Product Description Features FeaturesProduct Description Safety Warnings About AT CommandsTechnical Specifications Modem CompatibilityOperating Temperature Connect the Modem to Your System InstallationTwo-Wire or Four-Wire Leased Line Connection Connect the Modem to Your PCPower-On Test Install the Modem DriverConnect the Modem to the AC Power Outlet Installing the Modem DriverSetting Your Country or Region Code Using the LCD Panel Country or Region CodesUsing the Global Wizard Using AT CommandsInstall PhoneTools Using the Front Panel Modem ConfigurationLED Indicators Liquid Crystal Display LCD Option SelectionStatus Trunk Basic Options Trunk Basic Options Trunk Advanced Options Trunk Advanced Options Trunk Remote Configuration Options Trunk Diagnostic Options TrunkPhone Number Memory Options Trunk Caller ID Options TrunkSetting Country/Region Codes Trunk Caller ID Region SelectFunctionality of Menu Options StatusBasic Options Online OptionsCommand Mode Options Advanced Options RS232 OptionsCallback Security Remote Configuration Options Diagnostic OptionsPhone Number Memory Options Caller ID Options Region Select OptionsTwo-Wire / Four-Wire Setup Leased Line OperationFour-Wire Setup Dial BackupDial Backup and Leased Line Restore Setup Remote Configuration Basic ProcedureSetup Changing the Remote Configuration Password Changing the Remote Escape Character Setup Procedures Callback SecurityTurning Callback Security On and Off Assigning Callback Passwords Front Panel MethodAssigning Callback Phone Numbers Calling Procedure Callback Security Commands Default DescriptionTroubleshooting None of the Indicators LightModem Does Not Respond to Commands Modem Cannot Connect When DialingModem Cannot Connect When Answering Modem Disconnects While OnlineThere Are Garbage Characters on the Monitor File Transfer Is Slower Than It Should BeData Is Being Lost Modem Doesn’t Work with Caller IDAppendix a Regulatory Compliance FCC Part 68 TelecomEMC, Safety, and R&TTE Directive Compliance Canadian Limitations NoticeInternational Modem Restrictions New Zealand Telecom Warning Notice South African NoticeIntroduction Upgrade OverviewAppendix B Upgrading Firmware Identify the Modem FirmwareUpgrade the Modem’s Firmware Download the Upgrade FileExtract the Upgrade Files Clear Your Stored ParametersRestore Your Parameters Using the Modem to Call the Internet Appendix C Installing a Modem Under LinuxInstallation Standard Linux Serial Port DefinitionsCalling the ISP Answering CallsAppendix D Pin Descriptions RS-232 Pin DescriptionsRS-232 Cable Pinouts Leased Line PinoutsWeee Directive Appendix F Rohs HT/TS Substance Concentration Index #DBRegisters

PN S000408C specifications

The Multi-Tech Systems PN S000408C is a versatile and compact communication device designed for a wide range of applications in various industries. This device is primarily known for its robust performance, making it an ideal choice for developing Internet of Things (IoT) solutions, machine-to-machine (M2M) communications, and other telemetry applications.

One of the main features of the S000408C is its ability to support multiple communication protocols, which enhances its flexibility and interoperability with different systems. This device can seamlessly integrate with cellular, Ethernet, and serial interfaces, providing users the capability to implement diverse connectivity solutions. Its versatility enables it to function effectively in remote monitoring, data logging, and industrial automation scenarios.

The S000408C is engineered to work with multiple wireless technologies, including LTE, GSM, and CDMA, ensuring reliable connectivity across various geographical locations. This feature is essential for applications where consistent communication is necessary, such as in asset tracking and fleet management. Additionally, the device is compatible with various network configurations, making it suitable for both urban and remote deployments.

In terms of characteristics, the device stands out with its compact design, which allows for easy installation even in space-constrained environments. It features a rugged enclosure that is built to withstand harsh conditions, making it ideal for outdoor use. The S000408C is also equipped with power management capabilities, allowing for energy-efficient operation, which is crucial for battery-powered applications.

Moreover, the Multi-Tech S000408C prioritizes security, as it comes with built-in encryption features to protect data integrity during transmission. This aspect is particularly important for industries dealing with sensitive information, such as healthcare and finance.

The configuration process of the S000408C is straightforward, supported by comprehensive documentation and user-friendly software tools. This makes it accessible to developers and engineers, enabling them to rapidly deploy solutions without extensive training.

In conclusion, the Multi-Tech Systems PN S000408C is a powerful tool for businesses and developers aiming to harness the power of connectivity in their operations. With its multi-protocol support, robustness, and security features, it is well-positioned to meet the demands of today's connected world. As industries continue to evolve with the integration of IoT technologies, devices like the S000408C will remain at the forefront of enabling communication and operational efficiency.
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