This morning I enabled VOIP on the BF2 server. To use it, you'll need to enable VOIP in your BF2 client settings.

Here's how to use it:

1. Join a squad (press CapsLock).
2. Hold down the 'B' key to talk. Your voice will be heard by all your squadmates.
3. If you're a squad leader, hold down the 'V' key to talk to the Commander.
4. If you're the Commander, hold down the 'V' key to talk to all squad leaders.

Give it a try and let me know how it works for you.