Things You'll Need
Instructions
Installing the Headset
Unplug your Xbox 360 controller. If your controller is wireless, remove the battery pack. You should do this because plugging a headset into a powered-on controller can cause temporary shorts within the circuitry.
Plug your cell phone headset with a 2.5mm jack into the base of the controller. Make sure the plug is fully inserted.
Use your 3.5mm to 2.5mm adapter if you would like to use a cell phone headset with a 3.5mm jack. Plug the male end of the adapter into the controller and the 3.5mm headset jack into the female end.
Plug in or power on your controller.
Testing Your Headset
Turn on your Xbox 360 and log on to Xbox Live.
Go to your "Friends" list and view the profile of any friend. It doesn't matter if they are online or offline.
Select "Send Message." On the subsequent window, select "Voice Message."
Press the "Record" button (it looks like a white circle) and speak into your headset for 10 to 15 seconds. Press the "Stop" button when finished (it looks like a white square).
Press the "Play" button (it looks like a white triangle) to play back your recording. You should hear your voice coming through your headset. Delete the message to avoid sending your test recording.