Most flight online will use voice comms. As with all other decisions about the gaming session, this is up to whoever is hosting the game. Voice comms are a necessity for the online sim pilot; typing in the heat of battle is a good way to fly into the ground or take a SAM through the fuselage. There are many good voice comm programs available for download, and they all basically do the same job. Popular selections include Teamspeak, Roger Wilco and Ventrilo.
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