Справочник Пользователя для Multitech MT5600ZDXV

the new prefix in the Dial Prefix box. To change the dial prefix in Windows

Terminal, select Settings, Modem Commands. To change it in Windows 95

HyperTerminal, select Call, Connect from the menu bar, click Dialing Properties,

check This Location has Call Waiting, and select the correct code for your phone
service.

4

If you have extension phones on the same line as your modem, you or someone else

can interrupt the connection by picking up another phone. If this is a frequent

problem, disconnect the extension phones before using the modem, or install
another phone line especially for the modem.

4

Check for loose connections between the modem and the computer, the telephone
jack, and AC power.

4

You may have had a poor connection because of line conditions or the problem
may have originated on the other end of the line. Try again.

4

If you were online with a BBS, it may have hung up on you because of lack of

activity on your part or because you exceeded your time limit for the day. Try
again.

4

Auto-answer may be disabled. Turn on auto-answer in your datacomm program
or send the command ATS0=1 to your modem in terminal mode.

4

You may have an older UART. For best throughput, install a 16550AFN UART or
a Multi-Tech ISI serial port card.

4

If you are running under Windows 3.1 and have a 16550AFN UART, you must

replace the Windows serial driver, COMM.DRV, to take full advantage of the
UART’s speed.

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If you are using a slow transfer protocol, such as Xmodem or Kermit, try Zmodem
or Ymodem/G instead.

4

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.

4

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.

4

Try entering the &V (View Parameters) command, making a screen print of the
diagnostics listing, and checking for parameters that may be unacceptable.