It supports FreeSWITCH and soon other engines as well.  More information is at:

http://www.freepbx.org/freepbx-v3

Mike

On Aug 25, 2009, at 2:20 PM, Michael Di Martino wrote:

Is FreePBX V3 based on Freeswitch?
 
Michael DiMartino | Director of IT | Open Access, Inc.
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