Observa Telecom TD851W User Manual page 16

Step 4: Configure the IP address as Figure 3-4 shows. After that, click OK.
Note:
You can configure the PC to get an IP address automatically, select "Obtain an IP address
automatically" and "Obtain DNS server address automatically" in the screen above.
Now, you can run the Ping command in the command prompt to verify the network connection.
Please click the Start menu on your desktop, select run tab, type cmd or command in the field
and press Enter. Type ping 192.168.1.1 on the next screen, and then press Enter.
If the result displayed is similar to the screen below, the connection between your PC and the
Router has been established.
TD851W 150Mbps Wireless N ADSL2+ Modem Router User Guide
Figure 3-3
Figure 3-4
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