Multitech MT5634ZPW-PCI Manuel du propriétaire télécharger pdf (Page 63)

MT5634ZPW-PCI

4 Troubleshooting

The Modem Cannot Connect When

Answering

• Auto-answer may be disabled. Turn on auto-answer in your

data communications program or send the command

ATS0=1

to your modem in terminal mode.

File Transfer Appears Slower Than It

Should Be

• If you are using a slow transfer protocol, such as Xmodem

or Kermit, 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.

Data Is Being Lost

• If you are using data compression, be sure the serial port

baud rate is set to a minimum of four times the data rate.

• Make sure the flow control method you selected in software

matches the method selected in the modem. If you are using

CompuServe’s WinCIM software, you must set the modem

for XON/OFF flow control (see Chapter 4 for the

CompuServe initialization string).

• Try entering the

(View Parameters) command, making a

screen print of the diagnostics listing, and checking for

parameters that may be unacceptable.

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Multitech MT5634ZPW-PCI Manuel du propriétaire Page 63