OpenSIPS Presence Project Atul Tambe Hitesh Thavnani Amit Rindhe Madhusudhan Anurag Band Mentor: Harshith Somaya Guidance: Elliot Eichen

GOAL To implement a context aware infrastructure using presence server with the help of XCAP to create centralized presence information exchange for client status notification application.

OpenSIPS presence server User agent – 1. Jitsi 2. Pidgin

Implementation XCAP Presence Server XCAP protocol for XML An XCAP server used by XCAP clients Buddy lists Presence policy PUBLISH, SUBSCRIBE and NOTIFY methods to provide a complete SIP server solution Receiving and handling Presence subscriptions from UA. Receiving and aggregating Presence data from the PUAs. Composing the Presence status from the fragments of presence data. Notifying all subscribed UAs when the Presence status of a Presentity in which they are interested changes.

PRESENTITY AND CALL FLOW

DATABASE TABLE

Features Vision VoIP Presence information Video Call Instant Messaging  Saves $ as internal communication is free  Management and control by system administrator Academic institutional communicator  File transfer  Video chatting

SUMMARY Cost Effective Security Flexibility Reliability