Compaq Armada M300 Series Reference Manual page 146

Solving Modem Problems
Problem
Modem does not connect at
highest speed.
Fax transmissions do not
work.
Continued
Possible Cause
Line conditions in your area
or in the area you are
calling may not support
the highest
connect speeds.
Another device on your
telephone line may be
causing interference.
The telephone line does not
support 56K
implementation.
There is noise on the
telephone line.
The 56K protocol of an
internal modem will fall
back to lower speeds if the
telephone line is too noisy
for a high-speed
connection.
Another communications
software application is
open.
Modem is receiving
inadequate power.
The wrong printer driver is
selected.
Solution
Have your telephone line
checked by your local
telephone service provider.
Try dialing an alternate
telephone number for the
service you are using.
Hang up an extension
telephone and disconnect
any other devices that may
be using the same
telephone line, then redial.
The 56K protocol requires
that the telephone line
contain no more than one
analog-to-digital conversion.
Try connecting from an
alternate site.
Use another telephone line.
Change the Hang-up Delay
S Register: At the command
line in terminal mode, type
ATS10=150, then press
Enter .
NOTE: This command
causes the modem to take
longer to disconnect even if
there is no noise on the line.
Close the other
communications
application.
Connect the computer to
external power
or
If the computer must run
from a battery pack,
n
Make sure the battery
pack is fully charged.
n Clear all power
conservation
selections.
Verify that you have
selected the correct printer
driver.
Continued
Troubleshooting 15-17