Xbox Live

To configure your FiOS connection to work with Xbox Live, do the following:

Download the FiOS Actiontec Router Firmware Patch: http://www2.verizon.net/micro/actiontec/actiontec.asp
Save it to your desktop for easy access.
Once downloaded, go to the router page (192.168.1.1) login, select "Advanced" and click on "Firmware upgrade."
Click on "Force" and browse to the file on your desktop.
Restart your router if it doesn’t restart on its own. The page will refresh and ask you to login again.
Turn on your Xbox, or restart it if it’s already on.
You will have to detect your wireless network and re-enter your WEP Key.

If you made any changes to the settings in your router prior to trying this fix, you will have to reset it, then do steps 6 and 7.