Microphones in multiplayer

Basically is it possible for players to speak to each other using a microphone is a multiplayer game instead of only typing messages to one another?

I dunno if this is possible with C2, but if not maybe look into Ventrilo as an external alternative?

Since there are excellent VOIP programs for gamers (TeamSpeak, Ventrilo, etc.) I don't think your game would benefit from such a feature. The last time I saw a game where built in VOIP added some plus to the gameplay and fun was in Guns of Icarus Online.

But to answer your question: I don't know if it's possible with the vanilla C2, but it's certainly doable with a 3rd party plugin (you might just have to write it).

Edit: Here's an other topic about this: