Motorola 3460 - Manual (Page 93)

3460 Fast’R
5-5
DATA MODE
The modem
connects, but
does not pass
data Check that the modem
is in data mode (ATO) If the modem is not in data
mode, establish a connection
with the remote modem.
Check that the TD
LED is steady on or
flashing when data is
being transmitted from
the computer,
indicating that the
modem is receiving the
data from the
computer. Check computer for EIA signal
requirements.
Ensure the modem is correctly
cabled to the computer (use a
straight-through cable for the
RS-232 interface).
Check the computer’s
flow control method. Ensure that the computer’s flow
control is the same as the
modem option (AT
* FL).
If your communications
software’s file transfer protocol
is used, and the software
supports RTS/CTS Flow
control, set Flow=RTS/CTS
(AT
* FL3). If the package does
not support RTS/CTS flow
control, set Flow=Off
(AT
* FL0).
Verify line quality:
• Run a remote digital
loopback (RDL) or
RDL with pattern
test.
After running the RDL, if no
errors occur, the line is good.
If errors occur, perform a
manual retrain, or retry the
phone call.
• Disconnect the
modem from the line
and perform a local
analog loopback
(LAL) or LAL with
pattern test (with
modem flow control
off).
If the device fails, contact
Motorola customer service.
If the device passes, you may
have a line problem (contact
your telephone company) or a
problem with your software
(check with software vendor).
Table 5-1. Troubleshooting the 3460 Fast’R Modem
Problem Diagnosis/Test Possible Solution