The Presence and IM Session Establishment protocol is specified in RFC 3921 (a Proposed Standard of the Internet Engineering Task Force). This specification defines a method by which a client can formally request establishment of a presence and instant messaging session.
The following XML namespaces are used in the context of the Presence and IM Session Establishment protocol:
The following XML schemas are available for the Presence and IM Session Establishment protocol:
Information about this XMPP protocol is maintained by the XMPP Registrar.