Trouble Shooting; Is Not Lit; Dtr Led Not Lit, And The Ta Does Not Connect - D-Link DMI-128ESU+ User Manual

9 Trouble Shooting

Here are some flow charts of troubleshooting, which may help you resolve frequently encountered installation
problems.
9.1 Power Switch On but POWER LED is not lit.
Please Check Power. Does the
power cord connected ?
Connect the power cord.

9.2 DTR LED not lit, and the TA does not connect.

Are all connections to the TA
properly and correctly
connected?
Turn off the TA. Reconnect all
connectors before turning on
the TA.
D-LINK ISDN TA DMI-128ESU+
No
Yes
No
1. Please confirm that the
S/T line to local switch
center is connected
properly.
2. Confirm that the S/T of
local switch center is
working.
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