Multitech MT2834BL Specifications Page 213

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TECHNICAL SUPPORT 978-486-0086 • support@burk.com • www.burk.com
APPENDIX F • TROUBLESHOOTING
If this happens...
My mouse locks up when I try to connect
to the site.
I cannot connect to the site using a
modem.
The modem does not appear to be
working.
I’m directly connected to the site but I am
still having trouble communicating with it.
Try this...
Try a different COM port. If you are using
a serial port expansion card, check your
settings to make sure it does not share
settings with your mouse's COM port.
Check your modem’s dial string, the
phone number you are trying to call, and
your site settings.
Listen for your modem trying to negotiate
a connection with the modem at the site.
If they do not appear to be negotiating,
check the modem at the site to make sure
auto-answer is turned on (only if your
modem is connected to an I/O unit).
Install an RFI filter next to the modem or
voice interface unit – whichever one is
closest to the telephone line.
Make sure the modem has power and is
plugged in.
Check the DIP switch settings. Use other
communications programs such as
HyperTerminal to see if your modem is
working correctly. Enter the dial,
initialization, reset and auto-answer
strings are setup in the VRC software.You
should get a dial tone with the dial string
and an OK on the other strings. If it
doesn’t work, you may need to change
the default strings being used. You may
need to consult your modem manual for
further assistance.
Make sure you are using the proper null-
modem cable to connect to your modem.
The cable between the PC and modem
should be a full implementation (nine-pin
connection) cable supporting carrier
detect, RTS/CTS and send/receive.
For a direct serial connection, you should
be connected to the FULL-TIME port. For
a dial-up modem connection, and for
firmware upgrades, you must use the
DIRECT port. The FULL-TIME port is for
a four-wire or two-wire leased line modem
or direct connection.
It could be that...
The COM port is either using the same
interrupts as the mouse, or the COM
ports share the same interrupts.
The software is unable to establish
communication with the modem or site.
Radio frequency interference (RFI) is
preventing a clear communication.
The modem is not turned on.
The modem is not setup properly.
The serial cable is not compatible.
You are not using the proper COM port.
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