Alpha Telecom 3100-4g V2, User Manual

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T
ROUBLESHOOTING
A-2
LED Indicators
Link LED is Off • Verify that the ADSL router and attached device
are powered on.
• Be sure the cable is plugged into both the ADSL
router and the corresponding device.
• Verify that the proper cable type is used and that
its length does not exceed the specified limits.
• Be sure that the network interface on the
attached device is configured for the proper
communication speed and duplex mode.
• Check the adapter on the attached device and
cable connections for possible defects. Replace
any defective adapter or cable if necessary.
Network Connection Problems
Cannot ping the
ADSL router
from the
attached LAN • Verify that the IP addresses are properly
configured. For most applications, you should
use the ADSL router’s DHCP function to
dynamically assign IP addresses to hosts on the
attached LAN. However, if you manually
configure IP addresses on the LAN, verify that
the same network address (network component
of the IP address) and subnet mask are used for
both the ADSL router and any attached LAN
devices.
• Be sure the device you want to ping (or from
which you are pinging) has been configured for
TCP/IP.
Troubleshooting Chart
Symptom Action