Compaq Armada e500 - Notebook PC Quick Reference Manual page 174

Solving Modem Problems
Problem
Modem does not
connect.
Fax transmissions
do not work.
16-26 Troubleshooting
Continued
Possible Cause
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.
Solution
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.
Continued