User guide

Ubee Interactive 2.3 Validate Connectivity/Connect Devices to the Network
DDW3612 Subscriber User Guide • July, 2010 11
4. When prompted, enter the Network Key.
The Network Key = DDW3612 plus the last 6 characters (3 octets) of the cable
modem’s MAC address (upper or lower case).
Example: DDW36127CD4BE
The device MAC address can be found on the device label, or refer to “Cable
Modem - Information” on page 12.
5. Confirm connectivity by opening a web browser and going to any web site
(for example, http://www.wikipedia.org).
Note: If having wireless issues or questions, refer to “Wireless Network
Deployment and Troubleshooting” on page 52.
2.3.2 Additional Troubleshooting Information
Use the following tips for troubleshooting the installation.
 None of the LEDs are on when I power on the Wireless LAN Cable Modem.
 Check the connection between the power adapter and the cable modem.
Power off cable modem and wait for 5 seconds and power on the modem
again. If the problem still exists, there may have a hardware problem.
 The Ethernet 1, 2, 3, or 4 LED on the cable modem is not lit.
 Try restarting the computer so that is could re-establish a connection with the
cable modem.
 Check for a resource conflict (Windows users only). To do this: (1) Right-click
on the My Computer icon on your desktop and choose Properties. (2) Click the
Device Manager tab and look for a yellow exclamation point or red X over the
NIC in the Network Adapters field. If you see either one, you may have an IRQ
conflict. Refer to the manufacturers documentation or you cable service
provider for further assistance.
 Verify that TCP/IP is the default protocol for your network interface card (NIC).
 Power cycle the cable modem by removing the power adapter from the
electrical outlet and plugging it back in. Wait several minutes for the cable
modem to re-establish communications with your cable service provider.
 General Connectivity Issues:
 If your PC is connected to a hub or gateway, try connecting the PC directly into
an Ethernet port on the cable modem.
 If you are using a cable splitter, try removing the splitter and connect the cable
modem directly to the cable wall outlet. Wait several minutes for the cable
modem to re-establish communications with the cable service provider.
 The Ethernet cable may be damaged. Try another cable.
 If none of these suggestions work, contact your cable service provider for further
assistance.