Troubleshooting - US Robotics USR8550 Installation Manual

Troubleshooting

Troubleshooting
None of the LEDs are illuminated when the ADSL modem is powered on.
Possible Solution:
Check the connection of the AC power adapter to the ADSL modem and to the wall outlet.
The initialization of the DSL connection failed.
Possible Solution:
Make sure that the DSL cable is properly connected in the DSL port on the rear of the ADSL modem
and in the phone wall jack in your home. The DSL LED on the front of the ADSL modem should be illu-
minated.
Possible Solution:
Make sure that your VPI, VCI, type of encapsulation, and type of multiplexing settings match the infor-
mation that was provided by your DSL service provider. Refer to the User Guide for more information.
I cannot connect to my ISP.
Possible Solution:
Check to see if the DSL LED on the front of the ADSL modem is illuminated. If it is not illuminated,
make sure that the DSL cable is properly connected in the DSL port on the rear of the ADSL modem
and in the phone wall jack in your home.
Possible Solution:
Check to see if the LAN LED on the front of the ADSL modem is illuminated. If it is not illuminated,
make sure that the Ethernet cable is properly connected in the ENET port on the rear of the ADSL
modem and in the Ethernet jack in your computer.
Possible Solution:
Make sure that your VPI, VCI, type of encapsulation, and type of multiplexing settings match the infor-
mation that was provided by your DSL service provider. Refer to the User Guide for more information.
Possible Solution:
Verify that you have entered your correct login name and password for your DSL service provider.
Possible Solution:
Make sure that your TCP/IP property settings match the information supplied by your service provider.
Most service providers require that the computer obtain an IP address directly from the provider using
DHCP. On the network configuration control panel, click the Obtain IP address automatically button
and the Obtain DNS server address automatically button.
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