Appendix A: Troubleshooting; The Gateway Is Not Functional; I Can't Connect To The Gateway; The Leds Blink In A Sequential Pattern - CTC Union ATU-R140 User Manual

5.

Appendix A: Troubleshooting

Below is a list of commonly asked questions. Before calling technical support, please look
through these issues to see if they help solve your problem.
5.1

The gateway is not functional.

1. Check to see that the power LED is green and than the network cables are
installed correctly. Refer to the quick start guide for more details.
2. Check to see that the LAN and WAN LEDs are green.
3. Check to see that the DSL LED is green
4. Make sure you are not connecting the USB and the Ethernet port at the
same time. You must only use 1 interface at a time.
5. Check the settings on your PC. Again, refer to the quick start guide for
more details
6. Check the gateway's settings.
7. From your PC, can you PING the gateway? Assuming that the gateway
has DHCP enabled and your PC is on the same subnet as the gateway,
you should be able to PING the gateway.
8. Can you PING the WAN? Your ISP should have provided the IP address of
their server. If you can ping the gateway and your protocols are configured
correctly, you should be able to ping the ISPs network. If you cannot PING
the ISPs network, make sure your using the correct protocols with the
correct VPI/VCI values.
9. Make sure NAT is enabled for your connection. If NAT is disabled you the
gateway will not route frames correctly.
5.2

I can't connect to the gateway.

1. Check to see that the power LED is green and that the network cables are
installed correctly; see the quick start guide for more details.
2. Make sure you are not connecting the USB and the Ethernet port at the
same time. You must only use 1 interface at a time.
3. Make sure that your PC and the gateway is on the same network segment.
The gateway's default IP address is 192.168.1.1. If you are running a
Windows based PC, you can open a DOS window and type IPCONFIG;
make sure that the network adapter that is connected to the gateway is
within the same 192.168.1.x subnet.
4. Also, your PC's Subnet Mask should match the gateways subnet mask.
The gateway has a default subnet mask of 255.255.255.0.
5. If this still does not work, press the reset button for 10 seconds. This will
place the gateway into its factory default state. Go through the above
procedures again.
6. Make sure NAT is enabled for your connection. If NAT is disabled you the
gateway will not route frames correctly.
5.3

The LEDs blink in a sequential pattern.

This typically means that either the kernel or flash file system is corrupted. The only way to
recover from this type of failure is via the PC tool. You need to install the PC tool that was
provided with ATU-R140 ADSL Gateway and perform the following steps:
1. In windows disable all network adapters except the one, which is
connected to the gateway.
2. Disable zone alarm or any IP blocking software that is running of the PC.
3. Run the PC tool application. At the IP address prompt, type 192.168.1.1
and retrieve/assign IP address. The PC application should come back with
information about the gateway. You then need to load the kernel image,
flash file system, and config.xml file to the flash.
4. Once all three codes have been loaded into the gateway, the gateway will
automatically reboot. As long as there is no problem with the Flash
ATU-R140 ADSL Ethernet USB Router User's Guide
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