'America Online today joins the parade of companies offering Internet telephone service.
Initially the availability of AOL's Voice over Internet Protocol (VoIP) service is limited to 22.2 million AOL members who live inside the 40 major U.S. markets where the launch is taking place. For a complete list of these cities, visit AOL KeyWord: Internet Phone Service if you are a subscriber or AOL.com.
In coming months AOL expects to make its AOL Internet Phone Service available in more markets and to open it up to non-AOL members as well.'
Source: AOL Answers the VoIP Call