USRobotics 33600 Intercontinental, Connections are, Sometimes, Interrupted, During file transfer

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Intercontinental

If the telephone line's quality is low, it is

connections are

best to reduce the transmission speed in

sometimes

order to insure that the connection

interrupted.

remains stable.

 

 

During file transfer,

The telephone line is bad, select a lower

the modem sends

transmission speed.

back many

Re-initialize the modem to the factory

transmission errors

settings.

or a very low

 

transfer rate.

Change the transfer protocol.

 

 

During transmission

Check the modem's and the software's

of a fax, errors alter

flow control.

its legibility or cut

Remove all 'Terminate and stay resident'

off the connection.

programs (TSRs) that could be active

 

 

during the connection.

 

If the problem occurs during the trans-

 

mission of a fax from Windows or OS/2

 

check that the communications driver that

 

you are using is the one corresponding to

 

the environment that you use (Windows,

 

OS/2), or the one supplied specifically with

 

the communications software.

 

 

You get a message

With a Windows 3.1 or 3.11 system:

telling you that the

Click on the Configurator icon in the

modem is conflicting

Sportster Winmodem 33600 & x2/56K

with another device.

program group to get access to changing

 

 

the setting(s). Try different I/O addresses

 

and IRQ lines. If that does not work, you

 

may need to free up an I/O address or

 

IRQ line.

 

With a Windows 95 system:

 

1. Click on the Start button.

 

2. Scroll to Help.

 

3. Click on the Contents tab.

 

4. Select Troubleshooting.

 

5. Select If you have a hardware conflict.

 

6. Follow the screen commands.

 

 

Sportster Winmodem 33600 & x2/56K - User's manual 25

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Contents User’s Manual 1997 Table of Contents Glossary Limited Warranty Appendix B Technical SpecificationsVoice Functions Appendix a Technical ReferenceHow a Modem Works IntroductionQuickly How Does Your Sportster Winmodem 33600 & x2/56K∗ Work ?Accurately Other FeaturesEfficiently With WindowsPackage Contents Plug and Play InstallationSportster Winmodem 33600 & x2/56K Installation Insert the Modem Into the Computer Installation ProcedurePlug in the power plug and turn the computer on Run the Modem’s Installation Program If you choose Then try This COM port This IRQ Running the Installation Program on a Windows 95 System Installing the Communications Software Page Changing Country Setup under Windows Page Installation Test Using the ModemFactory Settings Resetting the Modem to Factory Settings Remember the Following Points When Using the Modem Remarks on Using the ModemUn-Installing the Modem Page Symptom Solution TroubleshootingProblems and Solutions Modem does not Send AT commandsRespond when, Terminal mode, youUsing a certain Tone when you try toErrors There is no audibleModem Connection problemConnects itself Correctly toA fax, errors alter Transmission errorsIntercontinental Connections areBefore the Modems Connect If your PC reacts as Signals but fail toThough you are Online, but no callLink. If your screen displays random or garbage characters During Data TransfersDuring Fax Transmissions If You Are Still Having Problems Page Overview of Voice Functions Voice FunctionsSpeakerphone Application SettingsImplementing Voice Functions Voice ApplicationsInput/Output Source Selection Page Appendix a Technical Reference Main AT commandsBasic Command Set E0 Echo OFF E1 Modem displays keyboard commands Fn Sets online local echo of transmitted data ON/OFF Ln Controls speaker volume internals onlyHn Controls ON/OFF hook Displays the following informationVn Displays verbal/numeric result codes Xn Sets result code displayed. Default isFunctions Xn SettingResult Codes Advanced Command Set Sets Error Control ARQ 1200 bps and higher Enables/disables data compressionSets Guard Tone Sets Transmit DataTD flow controlSets pulse rotary dial make/break ratio Writes current configuration to Nvram templatesSets Receive Data RD hardware flow control Controls Data Set Ready DSR operationsRegisters Reg Default FunctionSets the number of seconds the modem Page Bit Value Result Reg Default Function Reg Default Function Page Value Bit 4 Bit ResultBit 128 Reserved Page Page Sportster Winmodem X2/56K Specifications Electrical power Electromagnetic Compatibility SafetyCE Mark Page Glossary Analog signalsAsynchronous transmission Baud rateBits BitBps BufferDigital signals Data modeError correction DuplexFallback Fax modeFlow control Local EchoRemote Echo ParityProtocol Serial transmission Terminal modeSynchronous transmission TerminalXON/XOFF Page Limited Warranty Advised of the Possibility of Such Damages Page 024.1388-00