1. Initiator Where is the XMPP Server? DNS Server DNS SRV Lookup Location of XMPP Server

2. Initiator Open a chat room at the XMPP Server

3. Initiator xmpp://PhonetService@server Invite People to Join the Chat Subscribe to the service

4. Initiator Where is the network controller? Network Controller Send query message to a pre- defined multicast address Network controller listens on the address and gets the message IP/Port of the controller

5. Initiator The list of participants Help me install my network Network Controller

6. Initiator Install the routes between phones Network Controller

7. Initiator Where is the NOX? NOX Send a discovery message to a pre- defined multicast address NOX listens on the address and gets the message IP/Port of NOX

8. Initiator NOX Open a chat room at the Server

9. Initiator xmpp://PhonetService@NOX Invite People to Join the Chat NOX Subscribe to the service

10. Initiator Install the routes between phones Network Controller