D-LINK ISDN TA DMI-
43
9.3 Type “AT’, but the TA does not respond with “OK’ message
Is the “POWER” LED lit?
Turn on the power to the
TA
No
Yes
Does the attention code
contain both upper and lower
case letters? (i.e. aT or At?)
Use only one case in
attention code.
Yes
Is COM Port Setting
correct?
Retrieve and review COM
Port setting.
“Tx/Rx” LED does not flash
when entering command
from terminal (DTE)
Check the connection between
TA and DTE.
1. Check the socket connections.
2. Use the connection cord
provided with the TA.
3. Make sure the cord is in good
condition.
4. Make sure the Ta is
connected to the correct COM
Port on the PC.
Is the “DTR” LED lit?
Enter AT command of
“AT&D0”
Does the “Tx/Rx” LED
flash when enter
“AT<CR>” ?
Reconfirm COM Port.
No
No
Yes
No
Yes
No
Yes
Yes
Summary of Contents for DMI-128ESU+
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