User Guide

ISDN Router Manual V.1.1
73
11.3 Type “AT’, but the router does not respond with “OK’ message
Is the “PW” LED lit? Turn on power
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.
“DA” 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 router.
3. Make sure the cord is in good
condition.
4. Make sure the router is connect
to the correct COM Port on the
PC.
Is the “ER” LED lit? Enter AT command of “AT&D0”
Does the “DA” LED flash when
enter “AT<CR>” ?
Reconfirm COM Port.
No
No
Yes
No
Yes
No
Yes
Yes