Multi-Tech Systems MT5634ZLX User Manual

Page 51

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51

Chapter 5 - Troubleshooting

MT5634ZLX/E

P: No Text Appears on the Screen in Data Mode

C: The remote modem is not echoing your typed characters.

S: Type ATE0 then click Enter at the command line. Then turn the software echo feature on.

C: Your software may not be set to use Full Duplex or the remote modem may not be set to use

Full Duplex either.

C: The remote modem may be waiting for you to type a command before it will reply with text.

P: No Text Appears on the Screen When in Command Mode

S: If you can’t see the characters you are typing, then type ATE1 then click Enter.

P: The Modem Does Not Dial a Phone Number After Execution of AT Dial Command

C: If you use touch tone dialing on a phone line that requires pulse dialing, then it may not work.

S: Use ATDT in place of ATDP.

P: Communications Software Dials, but Fails

C: Make sure the software dialing prefix is ATDT.

C: Make sure the software and modem are set to the same COMx port.

C: The modem may not have hung up the phone line since the last call.

S: Change to Command mode and type ATH then click Enter.

P: The Modem Connects with Some Modems, but Not with Others

C: The remote modem may not support data compression or error correction, which might

cause it to take too long to negotiate a link.

S: You might try changing the way the modem negotiates by using the AT&Qn, ATNn, and

ATS37=n commands. It might be best to start with AT&Q0N1.

P: When Dialing Another Modem, You Receive a ‘CONNECT’ Response, but Nothing Else

C: The remote modem may be waiting for you to type a command.

S: Try to log on to the remote site (click Enter).

S: Type an AT command, then click Enter.

P: The Modem Speaker Does Not Make Any Sound When Connecting to Another Modem

C: The software may have the speaker disabled.

S: Change the setting in your software or use the ATMn command to turn the speaker on.

P: The Modem Loses the Connection When in Use

C: The remote modem may have locked up.

S: Run the Remote Digital Loopback Test (&T4 command).

C: The telephone switch may have disconnected your call.

C: Your software may have turned off the DTR signal.

P: The Modem Does Not Connect with Another Modem

C: There may be a problem with the remote modem if you do not hear the high pitched tone

from the remote modem.

S: Run the Remote Digital Loopback Test (&T4 command).

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