3Com 000839-08 Manual page 122

PROBLEM DIAGNOSIS
The computer or You may have a COM
software will not port/IRQ conflict (cont.).
recognize the
modem (cont.).
Both the modem's and
The modem software's local character
displays double echoes are probably
characters on your turned on.
monitor.
You may have plugged
your modem's phone cord
The modem won't into a digital line.
go off hook to dial
You might have a bad
or doesn't answer
phone cord connection to
the phone.
your modem.
You may have devices
between the modem and
the phone jack.
You may have a poor line
connection.
T O
ROUBLESHOOTING AND
POSSIBLE SOLUTION
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). You
can turn the local echo off on the modem by typing ATE0 and then
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 the wall phone jack. The phone cord should be no longer than 12 feet
in length. Use the phone cord included in your Sportster box 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
ATX3DT8479855092 (the 3Com BBS), and press ENTER. This string
bypasses the dial tone, allowing a connection if the modem is functioning
properly.
H R
NLINE ELP ESOURCES
117