They may actually be leading the crowd, since they are the first to offer voice access, though I am not sure it is a good thing. Emirates has one of their A340s configured with a GSM relay from AeroMobile, allowing for SMS and voice access in the air. They say that they’re seeing a lot of demand and plan to expand the service to include more planes as well as data and BlackBerry plans in the coming months. The only saving grace is that the flight crews will be able to turn off voice access for overnight flights. Otherwise I can imagine some pretty nasty air rage.