Multi-Tech Systems MT5634IND ユーザーズマニュアル
Chapter 6 – Troubleshooting
Multi-Tech Systems, Inc. MT5634IND User Guide (S000369A)
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Data Is Being Lost
•
If you are using data compression and a high speed serial port, set the serial port baud rate to two to six
times the data rate.
times the data rate.
•
Make sure the flow control method you selected in software matches the method selected in the modem.
•
Try entering the I11 command in online mode or the &V command in command mode to display information
about the last connection, making a screen print of the connection statistics, and checking for parameters
that might be unacceptable.
about the last connection, making a screen print of the connection statistics, and checking for parameters
that might be unacceptable.
There Are Garbage Characters on the
Monitor
Monitor
•
Your computer and the remote computer might be set to different word lengths, stop bits, or parities. If you
have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communication software.
have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communication software.
•
You might be experiencing line noise. Enable error correction, if it is disabled, or hang up and call again; you
might get a better connection the second time.
might get a better connection the second time.
•
At speeds above 2400 bps, the remote modem might not use the same transmission or error correction
standards as your modem. Try connecting at a slower speed or disabling error correction. (With no error
correction, however, line noise can cause garbage characters.)
standards as your modem. Try connecting at a slower speed or disabling error correction. (With no error
correction, however, line noise can cause garbage characters.)
•
Try entering the I11 command in online mode or the &V command in command mode to display information
about the last connection, making a screen print of the connection statistics, and checking for parameters
that might be unacceptable.
about the last connection, making a screen print of the connection statistics, and checking for parameters
that might be unacceptable.
The Modem Doesn’t Work with Caller ID
•
Caller ID information is transmitted between the first and second rings, so if autoanswer is turned off (S0=0)
or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information.
Check your initialization string, and if necessary change it to set the modem to answer after the second ring
(S0=2).
or if the modem is set to answer after only one ring (S0=1), the modem will not receive Caller ID information.
Check your initialization string, and if necessary change it to set the modem to answer after the second ring
(S0=2).
•
Make sure that you have Caller ID service from your telephone company.
Fax and Data Software Can’t Run at the Same
Time
Time
•
Communication devices can be accessed by only one application at a time. In Windows 95 and higher, you
can have data and fax communication applications open at the same time, but they cannot use the same
modem at the same time.
can have data and fax communication applications open at the same time, but they cannot use the same
modem at the same time.