Presence and Instant Messaging
Presence and Instant Messaging was an early proposal to the IETF of a standard protocol for instant messaging.
The abstract model was first published as an IETF Request for Comments, RFC 2778 "A Model for Presence and Instant Messaging" in February 2000, which was authored by Mark Day of SightPath, Jonathan Rosenberg of dynamicsoft and Hiroyasu Sugano of Fujitsu Laboratories LtdLtd.
No work has been done on it since 2001. Currently, SIP and its derivative SIMPLE, and XMPP are being considered for use as instant messaging protocols.
