User Guide Modem 3460

3460 Fast’R
5-8
Modem doesn’t
disconnect
when DTR
drops or when
communication
s software does
Check modem’s DTR
option (AT&D)
Set DTR to an option other than
High.
Set DTR=Discon (AT&D2).
Communication
software won’t
signal the
modem to
return to
command state
when escape
sequence
(+++) is issued
Check the delay
between issuing the
escape sequence (+++)
and the ATH
command.
Ensure the escape sequence
(+++) complies with the
modem’s guard time
requirements.
Check whether the
modem is set for AT
ACU.
Set ACU Protocol=AT
(AT
*
AC1).
FILE TRANSFER MODE
Can’t transfer
all of a file or
aborts during
transfer
Check the modem’s
flow control settings.
Ensure that the computer's flow
control is the same as the
modem option (AT
*
FL).
File transfer
takes longer
than expected.
Determine the file
transfer protocol.
Use another protocol; for
example, YMODEM.
Table 5-1. Troubleshooting the 3460 Fast’R Modem
Problem Diagnosis/Test Possible Solution