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TROUBLESHOOTING AND ONLINE HELP RESOURCES
90
PROBLEM DIAGNOSIS POSSIBLE SOLUTION
The computer or software
will not recognize the
modem (cont.).
The modem displays double
characters on your monitor.
The modem won’t go off
hook to dial or doesn’t
answer the phone.
You may have a COM
port/IRQ conflict (cont.).
Both the modem’s and
software’s local character
echoes are turned on.
You may have plugged
your modem’s phone cord
into a digital line.
You might have a bad
phone cord connection to
your modem.
You may have devices
between the modem and
the phone jack.
You may have a poor line
connection.
Make sure you have the correct COM port and IRQ settings in
your software and/or in the Windows Device Manager.
Disable Local Echo in your software OR on your modem (not
both). Turn local echo off on the modem by typing ATE0 and
pressing ENTER in your software’s terminal mode. To turn the
local echo off in the software, refer to its documentation.
Plugging your modem’s phone cord into a digital phone line can
damage the modem. Call your phone company if you are unsure
whether or not your phone line is digital.
The phone cord should be plugged into the TELCO jack on the
modem and an analog wall phone jack. The phone cord should
not exceed 12 feet in length. Use the phone cord included with
your modem if possible.
There should be no line splitters, fax machines, or other devices
between the modem and the wall jack.
Place the call again. Calls are routed differently each time. To
verify a valid phone connection, enter RapidComm’s Terminal
mode, type ATX3DT18479825092 (the 3Com BBS), and press
ENTER. This string bypasses the dial tone, allowing a connection
if the modem is functioning properly.