1. DCON An IMS enabled architecture for Distributed CONferencing A. Amirante, T. Castaldi, L. Miniero and S. P. Romano University of Napoli “Federico II” http://dcon.sourceforge.net http://confiance.sourceforge.net IPTComm 2007, New York, July 20 th

2. DCON architecture Distributed Conferencing (DCON) Explicitely recalls XCON (Centralized Conferencing) Orchestrates the operation of a set of XCON “clouds” Overlay network interconnecting the clouds Intra-focus communication  Still based on XCON protocols Inter-focus communication  Exploits Server-to-Server (XMPP) Requirements  Focus discovery  Initialization information & spreading of conference events  Setup and managing of distributed conferences  Transparent dispatching of natively centralized protocols among the involved conferencing clouds

3. DCON implementation Gateway MeetMe & FCS Manager Dispatcher Presence Manager Memory S2S manager DCON Focus_1 Gateway MeetMe & FCS Manager Dispatcher Presence Manager Memory S2S manager DCON Focus_2 User A_1 User B_1 User D User B XMPP s2s channel Pfx1=867 Asterisk XCON enabled Wildfire DCON enabled Asterisk XCON enabled 867100 C C’ 867100 867100 RTP(Audio) User A User C 867100 RTP(Video) D D’ Wildfire DCON enabled Pfx2=857

4. Demo setup Client side  Spark (enhanced) Server side  Asterisk (enhanced) Wildfire (enhanced)

5. The client in action