Modem Problems |
Problem |
Probable Cause |
Solution(s) |
Modem loses
connection. |
The cable connection from the
phone line to the modem is loose. |
Check to make sure the telephone
cable is properly connected. |
Call Waiting has not been
disabled. |
Disable Call Waiting:
1. Select Start, Setting, Control Panel, select Modems.
2. From the General tab of the Modems Properties page, select Dialing Properties.
3. From the My Locations tab of the Dialing Properties page, check the box labeled,
This location has Call Waiting. Select *70, 70#, or 1170 from the drop-down list to
disable Call Waiting. |
Modem not responding. |
Modem is not set up correctly in
system BIOS. |
Check the computer BIOS setup. If
it requires specific settings for modems, be sure that they have been enabled. |
Modem does not dial correctly. |
Telephone number is not entered
correctly in the dialing software of the modem. |
- Make sure number dialed is correct if using the
dialing directory or the terminal mode.
- Dial 1 if dialing long distance.
- The other line could be busy or not answering.
- Make sure the Call Waiting is disabled.
- The modem may not recognize at international dial tone. Try
the ATX3DT command and the telephone number.
|
Characters are garbled/transfer
rates are slow. |
There is noise in the telephone
line. |
- Check your telephone and modem cable connections. If they
are a little loose, they can cause noise on the line.
- Check with your local telephone company for a phone line
filter.
|
Phone line noise causing a
disconnection. |
Hang-up Delay S Register (S10)
set too low. |
Change S10 default to 150. To set
S10=150:
1. Select Start, Programs, Accessories, HyperTerminal, then go to Command Mode.
2. Type ATS10=150 and press Enter. This command
causes the modem to take longer to disconnect even if there is noise on the line. |
No dial tone. |
Phone service is not connected to
the telephone wall jack. |
Verify that service from the
local phone company by following these steps:
1. Unplug the telephone cable from the telephone wall jack.
2. Connect a telephone to the jack, pick up the handset, and listen for a dial
tone. If there is a dial tone, reconnect the modem to the telephone wall jack with
telephone cable and make sure all connections are sure.
3. If there is still no dial tone, contact your local phone company or building
manager. |
The modem is not responding to
commands from the computer keyboard. |
Verify the modem and computer are
connected:
1. Select Start, Programs, Accessories, HyperTerminal, then go to Command Mode.
2. Type AT and press Enter.
If the modem displays OK, the modem and computer are working together. If the modem
displays ERROR, or does not respond, restart the computer and repeat step 1.
3. Type ATDT and listen for dial tone.
4. Type ATHO to hang up. |
Modem does not
connect at highest speed. |
Line conditions in your area or
in the area you are calling may not support the highest connect speeds. |
Have your telephone line checked
by your local service provider. Try dialing
an alternate telephone number for the service you are using. |
Another device on your telephone
line may be causing interference. |
Hang up an extension telephone
and disconnect any other devices that may be using the same telephone line, then redial. |
The service or site called does
not support 56K or supports an incompatible 56K implementation. |
An internal modem supports
K56flex. To find an Internet service provider (ISP) that supports K56flex, go to the
Compaq web site at www.Compaq.com. |
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.
Try using another telephone line. |
Change the Hang-up Delay S
Register:
1. Select Start, Programs, Accessories, HyperTerminal.
2. Go to Command 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. |
The telephone line does not
support 56K implementation. |
The 56K protocol requires that
the telephone line contain no more than one analog-to-digital conversion.
Try connecting from an alternate site. |