US Robotics Sportster Operating Instructions Manual page 106

PROBLEM DIAGNOSIS
The computer or You may have a COM
software will not port/IRQ conflict
recognize the (cont.).
modem (cont.).
The modem Both the modem's and
displays double software's local
characters on character echoes are
your monitor. probably turned on.
You may have plugged
The modem your modem's phone
won't go off cord into a digital line.
hook to dial or
You might have a bad
doesn't answer
phone cord connection
the phone.
to your modem.
You may have devices
between the modem and
the phone jack.
You may have a poor
line connection.
102
T O
ROUBLESHOOTING AND NLINE
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 U.S.
Robotics BBS), and press ENTER. This string bypasses the dial tone, allowing a connection if
the modem is functioning properly.
H R
ELP ESOURCES