I use xbox 360 live and have a DSL FastAccess Extreme 6.0 modem,?

Question

however, I cannot speak to some people that want to play. I can hear them, but they can't hear me. Do you know why this is happening? I have been told that I do not have the right modem?

Answer 1

u have to change a port with the modem, by default the modem which is supplied blocks some things from xbox live.