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T
ROUBLESHOOTING
A-3
Management Problems
Cannot connect
using the web
browser
•
Be sure to have configured the ADSL Router with a
valid IP address, subnet mask, and default gateway.
•
Check that you have a valid network connection to the
ADSL Router and that the port you are using has not
been disabled.
•
Check the network cabling between the management
station and the ADSL Router.
Forgot or lost
the password
•
Press the Reset button on the rear panel (holding it
down for at least five seconds) to restore the factory
defaults.
Troubleshooting Chart
Symptom
Action
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T
ROUBLESHOOTING
A-4
Wireless Problems
A wireless PC
cannot associate
with the ADSL
Router.
•
Make sure the wireless PC has the same SSID settings
as the ADSL Router. See “Channel and SSID” on
page 4-24.
•
You need to have the same security settings on the
clients and the ADSL Router. See “Security” on
page 4-25.
The wireless
network is often
interrupted.
•
Move your wireless PC closer to the ADSL Router to
find a better signal. If the signal is still weak, change
the angle of the antenna.
•
There may be interference, possibly caused by a
microwave ovens or wireless phones. Change the
location of the interference sources or of the ADSL
Router.
•
Change the wireless channel on the ADSL Router. See
“Channel and SSID” on page 4-24.
•
Check that the antenna, connectors, and cabling are
firmly connected.
The ADSL
Router cannot
be detected by a
wireless client.
•
The distance between the ADSL Router and wireless
PC is too great.
•
Make sure the wireless PC has the same SSID and
security settings as the ADSL Router. See ADSL
Router. See “Channel and SSID” on page 4-24 and
“Security” on page 4-25.
Troubleshooting Chart
Symptom
Action
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B-1
A
PPENDIX
B
C
ABLES
Ethernet Cable
Caution:
DO NOT plug a phone jack connector into any RJ-45 port.
Use only twisted-pair cables with RJ-45 connectors that
conform with FCC standards.
Specifications
Wiring Conventions
For Ethernet connections, a twisted-pair cable must have two pairs of
wires. Each wire pair is identified by two different colors. For example,
one wire might be red and the other, red with white stripes. Also, an RJ-45
connector must be attached to both ends of the cable.
Cable Types and Specifications
Cable
Type
Max. Length
Connector
10BASE-T
Cat. 3, 4, 5 100-ohm UTP
100 m (328 ft)
RJ-45
100BASE-TX
Cat. 5 100-ohm UTP
100 m (328 ft)
RJ-45
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C
ABLES
B-2
Each wire pair must be attached to the RJ-45 connectors in a specific
orientation. The following figure illustrates how the pins on an Ethernet
RJ-45 connector are numbered. Be sure to hold the connectors in the same
orientation when attaching the wires to the pins.
Figure B-1.
RJ-45 Ethernet Connector Pin Numbers
RJ-45 Port Connection
Use the straight-through CAT-5 Ethernet cable provided in the package to
connect the
ADSL Router
to your PC. When connecting to other network
devices such as an Ethernet switch, use the cable type shown in the
following table.
Attached Device Port Type
Connecting Cable Type
MDI-X
Straight-through
MDI
Crossover
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E
THERNET
C
ABLE
B-3
Pin Assignments
With 100BASE-TX/10BASE-T cable, pins 1 and 2 are used for
transmitting data, and pins 3 and 6 for receiving data.
Straight-Through Wiring
If the port on the attached device has internal crossover wiring (MDI-X),
then use straight-through cable.
RJ-45 Pin Assignments
Pin Number
Assignment
1
1
Tx+
2
Tx-
3
Rx+
6
Rx-
1: The “+” and “-” signs represent the polarity of the wires
that make up each wire pair.
Straight-Through Cable Pin Assignments
End 1
End 2
1 (Tx+)
1 (Tx+)
2 (Tx-)
2 (Tx-)
3 (Rx+)
3 (Rx+)
6 (Rx-)
6 (Rx-)
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