SMC Networks Barricade SMC7004VWBR V.2 - Manual (Page 47)

Advanced Setup
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maintained during inactivity. If the connection is inactive for
longer than the Maximum Idle Time, it will be dropped.
(Default: 10 minutes)
Note: Please be aware that the setting "Maximum Idle Time"
to "0" and/or "Auto-Reconnect" enabled can cause
increased telephone bills. For further information
please visit
www.smc-europe.com or contact SMC's
technical support team.
Enable the Auto-reconnect option to automatically re-establish the
connection as soon as you attempt to access the Internet again.
Static IP
If your Internet Service Provider has assigned a fixed IP address,
enter the assigned address and subnet mask for the Wireless
Barricade, then enter the gateway address of your ISP.
You may need a fixed address if you want to provide Internet
services, such as a Web server or FTP server.