Compaq Armada M300 Series Reference Manual page 147

Solving Modem Problems
Problem
Characters are
garbled/transfer rates are
slow.
Modem loses connection.
15-18 Troubleshooting
Continued
Possible Cause
There is noise in the
telephone line.
Settings on the sending
and receiving modem do
not match.
The error correction feature
of your modem software is
interfering.
Call Waiting may be
interfering with
the connection.
Another device on your
telephone line may be
causing interference.
Hibernation was initiated;
the computer reached a
low-battery or critical
low-battery condition.
Your service provider may
have an inactivity timeout.
Solution
Request a telephone line
filter from your local
telephone service provider.
Use the same parity,
modem speed, word
length, and stop bits
settings on both modems.
Disable error correction
(&K0) and data
compression (&M0) using
AT commands.
NOTE: To access AT
commands and instructions
for using them, select
Start à Compaq Information
Center à Modem
Commands.
Disable Call Waiting before
dialing.
For information about
disabling Call Waiting,
consult your operating
system documentation.
To obtain the disable call
waiting code for your
dialing area, consult your
local telephone service
provider.
Hang up an extension
telephone and disconnect
any other devices that may
be using the same
telephone line, then redial.
1. Restore power,
if necessary.
2. Slide the power switch
to exit Hibernation,
if necessary.
3. Restart the
communications
software application.
Ask your service provider if
idle time on the line
terminates the connection.