MaxTech V.32bis, V.42bis user manual Modem makes a connection but no data appears on your screen

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identically.

2.Make sure the phone line is working properly. Replace the modem with a regular phone and dial the number. If the line sounds noisy, you may have difficulty connecting to the remote device.

Modem makes a connection but no data appears on your screen.

1.The remote system may be waiting to receive your data before it begins. Try pressing the ENTER key a few times.

2.Make sure the correct data format (data bits, stop bits, and parity bits) and flow control (RTS/CTS) method are being used.

3.Make sure the correct terminal emulation mode is being used (see communication software manual).

4.Make sure the modem is not sharing an IRQ or COM port with another device (see Section 2.4).

High pitch tone is heard whenever you answer the phone.

1.Make sure Auto-Answer is turned off. Your modem is factory configured to NOT auto-answer. Issue AT&F to factory reset your modem.

Modem experiences errors while communicating with a remote modem.

1.Make sure the DTE speed is the same as the modem connec- tion speed when in Direct Mode (\N1 command in effect).

2.Make sure the remote system and your modem use the same communication parameters (i.e., baud rate, data bit length, parity, and stop bit).

3.Make sure RTS/CTS hardware flow control is enabled and XON/XOFF software flow control is disabled in the commu- nication software.

4.Make sure the data speed is not faster than your computer's capability. Most IBM compatibles are capable of 19,200 bps under DOS and Windows. Operating at higher speeds under Windows requires a faster CPU (386/486 or better).

Modem experiences bursts of errors or suddenly disconnects while communicating with a remote modem.

1.Make sure Call Waiting is turned off.

2.Make sure the phone line does not exhibit excess noise.

Modem exhibits poor voice record or playback.

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Contents Contents Unpacking Your Modem Hardware InstallationFasten the retaining bracket Software Installation/ConfigurationPage Devices in your computer cannot share an IRQ with COM Port and Interrupt SettingsUsing Your Modem Testing Your Modem After InstallationCommand Structure Where To Go From HereExecuting Commands Basic AT Commands Extended AT Commands Guard tone disabled Mode after DTR toggleForce DSR Signal High on Enable Trellis Coding @22bis auto-retrain enabled 22bis auto-retrain disabledEnable Auto Fall Forward/Back Disable Auto Fall Forward/BackFax Class 1 Commands Voice Mode Commands S Registers Function Range/units Default Basic Response Codes Modem dials but does not connect Modem does not respond to commandsModem does not dial Modem exhibits poor voice record or playback Modem makes a connection but no data appears on your screenHigh pitch tone is heard whenever you answer the phone Uart FCC ComplianceDOC Compliance Information FCC Class B StatementDisclaimer, Copyright, And Other Notices Section One Introduction Software Installation/Configuration COM Port and Interrupt Settings Switch Block SW-1 Location Switch Block Settings Testing Your Modem After Installation Ccitt mode Bold text Command Function Manually answer incoming callOriginate calls in answer mode With AT or follow with EnterCommands are not echoed Recall factory default configuration Resets modem after DTR toggleToggle Hz guard tone\A3 MNP/V.42/V.42bis Commands\Q3 Switch to reliable link from normal link S Registers Register Function Range/units DefaultSection Five Result Codes Section Six Troubleshooting Modem does not dial Power 75 W Section Eight Support and Service DOC Compliance Information Disclaimer, Copyright, And Other Notices