Players will be able to communicate not only by chat, but via mobile devices too (mobile phones, walkie-talkies, or pager).
Here is the demo. As you can see, it has all the basic functions of an cheap average phone (including signal level). You can activate the phone and then say something using chat panel. Yes, we can make real rich-boy phone with camera, streaming audio, and melodies, but we don’t need it right now.