SIMPLE WG M. Lonnfors Internet-Draft K. Kiss Expires: April 27, 2006 Nokia October 24, 2005 User Agent Capability Extension to Presence Information Data Format (PIDF) draft-ietf-simple-prescaps-ext-05 Status of this Memo By submitting this Internet-Draft, each author represents that any applicable patent or other IPR claims of which he or she is aware have been or will be disclosed, and any of which he or she becomes aware will be disclosed, in accordance with Section 6 of BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet- Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/ietf/1id-abstracts.txt. The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html. This Internet-Draft will expire on April 27, 2006. Copyright Notice Copyright (C) The Internet Society (2005). Abstract Interoperation of instant messaging and presence systems has been defined in the IMPP working group. The IMPP WG has come up with baseline interoperable operations and formats for presence and instant messaging systems. This memo defines an extension to represent RFC3840 capabilities in the Presence Information Document Format (PIDF) compliant presence documents. Lonnfors & Kiss Expires April 27, 2006 [Page 1] Internet-Draft User Agent Capability Presence Status October 2005 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1. Motivation . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Extension for "Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)" in PIDF documents . . . . . 5 3.1. Overview of operation . . . . . . . . . . . . . . . . . . 5 3.2. Service capability element . . . . . . . . . . . . . . . . 6 3.2.1. element . . . . . . . . . . . . . . . . . . 6 3.2.2.