In many cases, a wired Ethernet connection will be provided by your ISP. This type of connection includes DSL, Cable and Managed Internet Connections.

Once an Internet Connection has been established, the U115 will try to retrieve its configuration from the network, and if successful, may perform an automatic reboot to pick up the new configuration. This should occur within the first 2-3 minutes after initial power on. Wait for a steady GREEN ONLINE light on the front panel to indicate the U115 is ready for use.

Basic connectivity is shown in the diagram above. Devices in the local network are connected to one or more of the LAN ports on the back of the U115; the broadband connection is usually established via the WAN1 port.

Use a straight-through Ethernet cable (usually provided by your Broadband Internet Service Provider) to connect your Internet broadband interface device to the Ethernet port labeled WAN1 on the U115. The U115 should be connected directly to the broadband interface device.

Dynamic Host Control Protocol (DHCP) is the default configuration for Internet IP addressing of the U115 Internet network interface. If your device automatically obtains an address from your ISP through DHCP, it should auto-configure shortly after powering up.

If your Broadband Internet Service Provider supplied you with a static IP address or PPPoE account information for use with your broadband connection, you should and select either "Static" or PPPoE when answering the question “HOW DO YOU WANT YOUR AT&T U115 TO RECEIVE IP ADDRESSES”.