I have been connecting to Xbox Live for months now, with little to no problem. I have reset my router multiple times as well as resetting my xbox to factory defaults.
What Country/State/Province do you live in? US, Georgia
Modem brand & model number: Netgear CG814G
Router brand & model number: Netgear CG814G
If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter? Wired Connection
Things you have tried: Resetting router (multiple times), Resetting Xbox (multiple times)
Is UPnP Enabled? Yes
Do you have a NAT error? If so, what is your NAT? When I have been connected, it was Moderate, I now can not connect at all.
Any Error Codes you encounter: None.. I dont believe.
Who is your ISP(Internet Service Provider)? Charter Communications
After you run "Test Xbox LIVE connection" press “Y” for "More Info”. In the pop-up that appears, what are the following values, if shown? (If a value below does not appear for you, just leave it blank.)
W: 0000 - 000B
X: 4000 - 1001
Y: 0000 - 0000
Z: 0000 - 0000
ID: 0001 - 0002
L: 8015 - 1901
Q: 8007 - 0435