Here's what I've tried to fix it:
Restarting the game
Restarting the console (X-Box 360)
Restarting the motem
I have tried an EA help thing but that required me to type in my router's IP address into the browser, which did not work.
Can anyone help me?
EDIT: I also checked my connection, which I didn't really need to, considering I'm usually talking to people in an X-Box LIVE party.