Directions for VoIP IRT Research Henning Schulzrinne Department of Computer Science Columbia University September 16, 2004

General directions in SIP-related technology Completed core functionality for VoIP

Missing protocol pieces Conference management and control  XCON working group Configuration management  based on XCAP  but no real data definitions yet Performance management  detect automatically when things aren’t working right

Missing software pieces: collaboration Integrate off-line coordination with on-line collaboration  calendaring and scheduling (with Palm sync)  “CRM” functionality: tabulate all contacts with a certain group or person  conferences  mailing lists & IM lists  simplified conference file sharing  richer conference functionality: outbound calls call statistics SIPquest/CINEMA software has some of this, but needs renewed attention and re-factoring

Software issues: Standards- compliance RFC 3261/… compliance Conference control Presence components  XCAP for subscribers, watchers, policy, …  robust PUBLISH

Missing software features: configuration Update of web password automatically changes phone passwords  plethora of authentication options confuses users Automated management of IP phones from multiple vendors  generate config files or web updates  transient need until XCAP configuration

On-going IRT SIP-related research projects mobility for VoIP SIP server performance and robustness Peer-to-peer SIP (hybrid systems) SIP conferencing  data conferencing (shared applications) Rich presence & location-based services SIP for training  FAA prototype for air traffic controller radio training Spam control for SIP SIP session and service mobility SIP for 911 services