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ADSL2+ Modem Router DM111PSPv2 User Manual
Troubleshooting 6-3
v1.0, December 2008
ADSL LED Is Off or Is Blinking
The following table provides troubleshooting tips if the ADSL LED is off or is blinking.
The Power LED never turns green. This indicates that the modem router’s self-test failed.
• Cycle the power to see if the modem router recovers.
• Clear the modem router’s configuration to factory defaults. This will
set the modem router’s IP address to 192.168.0.1. This procedure is
explained in
“Using the Reset Button” on page 6-8.
• If the error persists, you might have a hardware problem and should
contact technical support.
Table 6-2. ADSL LED Troubleshooting
ADSL LED Situation Action
The ADSL LED is off
(no ADSL link is detected)
• Make sure that the telephone jack is live—temporarily connect a
standard telephone to the telephone jack to check for a dial tone.
• Make sure that the telephone cable connections are secure at the
modem router and at the ADSL-capable telephone jack.
The modem router was just
installed and the LED has never
been solid on.
• Disconnect all telephones on the line. If this solves the problem,
reconnect the telephones one at a time, being careful to use a
microfilter on each telephone. If the microfilters are connected
correctly, you should be able to connect all your telephones.
• If disconnecting telephones does not result in a green Internet LED,
there may be a problem with your wiring. If the telephone company
has tested the ADSL signal at your Network Interface Device (NID),
then you may have poor quality wiring in your house.
• Verify that you are connected to the correct telephone line. If you
have more than one phone line, be sure that you are connected to
the line with the ADSL service. It may be necessary to use a swapper
if you ADSL signal is on pins 1 and 4 or the RJ-11 jack. The ADSL2+
Modem Router uses pins 2 and 3.
• Log in to the modem router as described in “Logging In to the Modem
Router” on page 1-2, and select ADSL Settings from the main menu.
Make sure that your login name and account password are correct
and the ADSL settings are set to the values required by your ISP.
Table 6-1. Power LED Troubleshooting (continued)
Power LED Situation Action