Zoom MAC quick start General Troubleshooting

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For help with this problem…

See

 

page…

The modem disconnects while communicating

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with a remote system.

 

The modem does not make a data connection.

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You receive bursts of errors occasionally, but

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otherwise data quality is good.

 

Random errors occur in transmitted data.

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Data is missing.

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The quality of the voice messages needs to be

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improved.

 

Your faxmodem is not communicating data as

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fast as you expect.

 

General Troubleshooting

Problem: The software cannot find the modem and the modem does not respond to AT commands. (The following comments apply to many other problems as well.)

Solution: The most common error with modems is that the communications software is not configured for the same serial port as the modem. Check which serial port the modem is using. Make sure that the software’s serial port setting matches the modem’s serial port setting.

Problem: The modem takes too long to hang up at the end of a telephone call.

Solution: Your modem may not be receiving the required initialization string, which should include the &C1 setting, from your software.

In your software, make sure you have selected your modem. If not, select it and exit and restart your communications software. If you still have problems, add &C1 to the initialization string, then exit and restart the software. (See Tips for Selecting Setup Options in Chapter 2.)

Chapter 3 Solving Common Problems

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Contents MAC Copyright All rights reserved Contents Page What You Need to Use Your Faxmodem IntroductionFor some modems, you may also have received Documentation ConventionsIntroduction Installing the Faxmodem Turn the computer back on Summary of the Indicator Lights FAX Using Initialization Strings Using the FaxmodemUsing Other Voice, Fax, and Data Communica- tions Software Tips for Selecting Setup Options ∙ Set auto baud detect to OFF or no Using AT CommandsUsing AT commands in terminal mode Returning to the Factory SettingsFor help with this problem… See Page… Solving Common ProblemsGeneral Troubleshooting Problem No response appears after executing a com- mand Type AT &D0 &W &Y0 and press Enter Problem Modem does not auto-answerProblem The modem speaker volume is too low or too high Echo TroubleshootingFor low volume For highest volumeConnection Troubleshooting Dial TroubleshootingAT &F On next Initialization string AT&F&C1&D2W2 Dial prefix ATW2D Problem Your modem does not make a connection Quick Start and Reference Guide Appendix a Product Summary Quick Start and Reference Guide External Appendix B Product SpecificationsFCC Part 68 Telecommunications Statement Appendix C Regulatory InformationCanadian Emissions Statement Industry Canada AttachmentFaxmodem Model Important InformationSerial Number Date of Purchase Store or Dealer