TROUBLESHOOTING
TROUBLESHOOTING
- 19 -
TROUBLESHOOTING
This section lists the common problems and possible causes and/or solutions. You may find the answer to your problem here.
Problem
Solution
NO DIAL TONE
!
Check the phone connection on both sides of the cable.
!
Ensure the telephone is an Analog line not Digital line.
!
Check the telephone line by connecting a standard telephone,
listen to the normal house hold dial tone.
!
Bypass Dial tone detection, add
>
X3' to the init string.
Cannot hear
modem speaker
!
Check the computer volume setting.
!
In Terminal Mode send
>
ATL3M1' command to the modem, this
will enable modem sound until its connection to a remote
modem with the highest volume.
The selected COM
port is either not
supported or is
being used by
other devices.
!
Disable Auto-receive in the FAX program.
!
Check the COM Port I/O address and IRQ setting.
Click on: Main Group => Control Panel => Ports => COM x
(x=com port 1-4)
!
Ensure that only one program is using the modem.
Cannot type
>>
AT
==
in terminal mode.
!
Check the IRQ setting in your application program, make sure
that it matches the setting from the device driver.
!
Some program may not support IRQ higher than 7.
Failed to connect
!
Check your modem choice.
!
Try adding the \N1 as the last command to the init string.
Modem doesn
==
t fit
!
Make sure the computer has Type II or Type III slot.
!
Check the User
=
s manual for the PC Card
=
s slot location.
Can
==
t Send or
Receive fax
!
Ensure you select the right fax Class for the modem
or try selecting fax Class 1 with CTS/RTS (Hardware) flow
control.
Unreadable
character on the
screen
!
Check and make sure the communication parameters match the
remote location, i.g., Data Bit, Parity, Stop Bit
Cannot find
modem
!
Use PC Card driver utility
>
Cardinfo
=
or
>
PCMinfo
=
to make sure
modem is configured.
!
Using MSD to verify that you have an additional COM port after
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